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偏心摄影视力筛选仪球镜检测用可调式液体模拟眼设计 被引量:1
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作者 王一乔 付强 郁红漪 《中国医疗器械杂志》 2023年第2期140-144,149,共6页
设计了一种在医疗器械视力筛选仪型式检验时用来检测不同球镜屈光度指标的液体测试模拟眼。这种液体测试模拟眼设计由透镜、腔体、仿视网膜活塞3部分组成。通过利用几何光学原理和人眼视网膜光学散射效应,计算分析了所设计的可调式液体... 设计了一种在医疗器械视力筛选仪型式检验时用来检测不同球镜屈光度指标的液体测试模拟眼。这种液体测试模拟眼设计由透镜、腔体、仿视网膜活塞3部分组成。通过利用几何光学原理和人眼视网膜光学散射效应,计算分析了所设计的可调式液体模拟眼调节位移与球镜度的关系。所设计的液体测试模拟眼可用于视力筛选仪、电脑验光仪及其他基于摄影原理验光设备的球镜度测量等。 展开更多
关键词 视力筛选仪 液体模拟 球镜度
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不互溶液体交互的快速模拟
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作者 孙洪全 韩纪庆 《计算机研究与发展》 EI CSCD 北大核心 2010年第11期1865-1870,共6页
为模拟不互溶液体之间的交互现象,提出了一种基于粒子的模拟方法.通过建立一个简单有效的液体间界面张力计算模型,并利用光滑粒子流体动力学的基本方法进行求解,实现了对多种不互溶液体间交互的快速模拟.通过2组实验分别模拟2种液体间和... 为模拟不互溶液体之间的交互现象,提出了一种基于粒子的模拟方法.通过建立一个简单有效的液体间界面张力计算模型,并利用光滑粒子流体动力学的基本方法进行求解,实现了对多种不互溶液体间交互的快速模拟.通过2组实验分别模拟2种液体间和3种液体间的交互,并与传统SPH方法和Müller等人的方法进行了对比,验证了算法的优越性.计算界面张力所需的计算量非常小,能够快速真实地模拟多种液体交互的不互溶现象,可适用于多种图形、动画的具体应用. 展开更多
关键词 不互溶性 液体交互 液体模拟 光滑粒子流体动力学 流体模拟
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Molecular simulation study of the microstructures and properties of pyridinium ionic liquid[HPy][BF_(4)]mixed with acetonitrile
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作者 XU Jian-Qiang MA Zhao-Peng +2 位作者 CHENG Si LIU Zhi-Cong ZHU Guang-Lai 《原子与分子物理学报》 CAS 北大核心 2025年第4期27-32,共6页
The microstructures and thermodynamic properties of mixed systems comprising pyridinium ionic liquid[HPy][BF_(4)]and acetonitrile at different mole fractions were studied using molecular dynamics simulation in this wo... The microstructures and thermodynamic properties of mixed systems comprising pyridinium ionic liquid[HPy][BF_(4)]and acetonitrile at different mole fractions were studied using molecular dynamics simulation in this work.The following properties were determined:density,self-diffusion coefficient,excess molar volume,and radial distribution function.The results show that with an increase in the mole fraction of[HPy][BF_(4)],the self-diffusion coefficient decreases.Additionally,the excess molar volume initially decreases,reaches a minimum,and then increases.The rules of radial distribution functions(RDFs)of characteristic atoms are different.With increasing the mole fraction of[HPy][BF_(4)],the first peak of the RDFs of HA1-F decreases,while that of CT6-CT6 rises at first and then decreases.This indicates that the solvent molecules affect the polar and non-polar regions of[HPy][BF_(4)]differently. 展开更多
关键词 Pyridinium ionic liquids Thermodynamic properties Molecular dynamics simulation Radial distribution functions
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纤维定量检测系统中烧杯组件液体晃动动态特性与响应
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作者 周明星 孟婥 +1 位作者 孙以泽 孙旭东 《纺织学报》 EI CAS CSCD 北大核心 2017年第8期132-138,共7页
为减少人工操作的危险性,并增加纤维定量检测系统中烧杯组件运行过程的稳定性,根据实验实际需求设计运行工况,通过理论分析对单个烧杯中液体运用Fluent软件进行不同工况下的晃动动力学特性模拟。模拟结果显示,3种工况下液体都没有飞溅... 为减少人工操作的危险性,并增加纤维定量检测系统中烧杯组件运行过程的稳定性,根据实验实际需求设计运行工况,通过理论分析对单个烧杯中液体运用Fluent软件进行不同工况下的晃动动力学特性模拟。模拟结果显示,3种工况下液体都没有飞溅出烧杯,且烧杯底部受到液体晃动产生正弦形式的压强作用。再根据烧杯中液体晃动结果,运用ANSYS对组件中托板钢丝网进行静力分析和谐响应分析。结果表明,烧杯内液体晃动频率并没有达到钢丝网固有频率,烧杯组件运行过程中动态特性影响较小,能够保证运行的平稳,说明烧杯组件结构参数设计合理,运行工况符合实际需求。 展开更多
关键词 液体晃动动力学模拟 谐响应分析 烧杯组件 混纺纤维定量检测系统
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国外核生化模拟训练器材
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作者 刘耀先 《国外防化科技动态》 2001年第7期18-18,32,共2页
关键词 外国 核生化模拟训练器材 M256型化学检测模拟 L1A2型空爆液体炸弹发射模拟
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Numerical study on dehumidifying process in falling film dehumidifier 被引量:3
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作者 孙健 施明恒 《Journal of Southeast University(English Edition)》 EI CAS 2007年第2期272-277,共6页
A counter flow model of simultaneous heat and mass transfer of a vapor absorption process in a falling film dehumidifier is developed. The governing equations with appropriate boundaries and interfacial conditions des... A counter flow model of simultaneous heat and mass transfer of a vapor absorption process in a falling film dehumidifier is developed. The governing equations with appropriate boundaries and interfacial conditions describing the dehumidifying process are set up. Calcium chloride is applied as the desiccant. The dehumidifying process between falling liquid desiccant film and process air is analyzed and calculated by the control volume approach. Velocity field, temperature distribution and outlet parameters for both the process air and desiccant solution are obtained. The effects of inlet conditions and vertical wall height on the dehumidification process are also predicted. The results show that the humidity ratio, temperature and mass fraction of salt decrease rapidly at the inlet region but slowly at the outlet region along the vertical wall height. The dehumidification processes can be enhanced by increasing the vertical wall height, desiccant solution flow rates or inlet salt concentration in the desiccant solution, respectively. Similarly, the dehumidification process can be improved by decreasing the inlet humidity ratio or flow rates of the process air. The obtained results can improve the performance of the dehumidifier and provide the theoretical basis for the optimization design, and the ooeration and modulation of the solar liquid desiccant air-conditioning systems. 展开更多
关键词 DEHUMIDIFIER liquid desiccant falling film numerical simulation
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盒形型腔模填充形态的研究
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作者 杨裕国 《水利电力机械电子技术》 1994年第1期50-54,共5页
本文以水和异丙醇等液体试验为基础,通过对透明塑料制成的模具内着色的液体高速摄制的照片,研究了盒形型腔模的液体填充形态.采用逐渐变薄的横浇道和沿整个宽度的内浇口,通过改变盒形件壁厚、内浇口尺寸和速度,得出了敞开式整体前沿的... 本文以水和异丙醇等液体试验为基础,通过对透明塑料制成的模具内着色的液体高速摄制的照片,研究了盒形型腔模的液体填充形态.采用逐渐变薄的横浇道和沿整个宽度的内浇口,通过改变盒形件壁厚、内浇口尺寸和速度,得出了敞开式整体前沿的连续液流能减少盒形型腔内的湍流、空气卷入和避免过早地封住排气道.指出了可通过控制填充速度,使有封闭前沿的断续液流不再形成而获得满意的盒形零件.实际生产的零件证实了用液体模拟的试验方法是有效的.作者还对填充过程中的撞击型芯产生的严重湍流和气体的卷入,进行了观测与分析. 展开更多
关键词 盒形型腔模 液体模拟 填充形态
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Formation characteristic of Ca-P coatings on magnesium alloy surface 被引量:4
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作者 刘广义 唐莎巍 +2 位作者 王川 胡津 李德超 《Transactions of Nonferrous Metals Society of China》 SCIE EI CAS CSCD 2013年第8期2294-2299,共6页
A chemical method was used to deposit dicalcium phosphate dehydrate coatings on AZ91 magnesium alloy. The aim was to improve the biodegradation behavior of magnesium alloy in a simulated body fluid. The microstructure... A chemical method was used to deposit dicalcium phosphate dehydrate coatings on AZ91 magnesium alloy. The aim was to improve the biodegradation behavior of magnesium alloy in a simulated body fluid. The microstructures of the coating before and after immersion in the simulated body fluid were characterized by scanning electron microscopy (SEM) and X-ray diffraction (XRD) The results indicated that the dicalcium phosphate dehydrate coatings exhibited two morphologies during the pre-calcification process. The titration speed of the pre-calcification process had great influence on the morphologies of the pre-calcification coatings. As the soaking time increased, the diffraction peaks of dicalcium phosphate dehydrate disappeared and hydroxyapatite precipitated on the coated substrate surfaces. This indicates the dissolution of dicalcium phosphate dehydrate during the immersion process. The structures of the dicalcium phosphate dehydrate coatings and the formation mechanisms of the hydroxyapatite coatings were investigated in detail. 展开更多
关键词 magnesium alloy Ca-P coatings microstructure simulated body fluid
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Insight into Capture of Greenhouse Gas (CO2) based on Guanidinium Ionic Liquids
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作者 刘和秀 满瑞林 +2 位作者 郑柏树 汪朝旭 易平贵 《Chinese Journal of Chemical Physics》 SCIE CAS CSCD 2014年第2期144-148,I0003,共6页
Quantum mechanics and molecular dynamics are used to simulate guanidinium ionic liquids. Results show that the stronger interaction exists between guanidine cation and chlorine anion with interaction energy about 109.... Quantum mechanics and molecular dynamics are used to simulate guanidinium ionic liquids. Results show that the stronger interaction exists between guanidine cation and chlorine anion with interaction energy about 109.216 kcal/mol. There are two types of spatial distribution for the title system: middle and top. Middle mode is a more stable conformation according to energy and geometric distribution. It is also verified by radial distribution function. The continuous increase of carbon dioxide (CO2) does not affect the structure of ionic liquids, but CO2 molecules are always captured by the cavity of ionic liquids. 展开更多
关键词 Ionic liquids Quantum chemical calculation Molecular dynamics simulation Interaction energy Radial distribution
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塑料食品包装材料中双酚A的迁移量检测 被引量:14
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作者 刘忠瑞 孙立文 +3 位作者 李洋洋 杨虹 郑鑫 王立波 《食品安全质量检测学报》 CAS 2018年第10期2350-2355,共6页
目的检测液体食品模拟物中源于塑料包装材料的双酚A(bisphenol A,BPA)的迁移量。方法建立高效液相色谱检测双酚A的方法学,通过液体食品模拟物探讨了时间、温度、酸度、乙醇浓度、微波加热时间、油脂6种因素对BPA迁移率的影响。结果 BPA... 目的检测液体食品模拟物中源于塑料包装材料的双酚A(bisphenol A,BPA)的迁移量。方法建立高效液相色谱检测双酚A的方法学,通过液体食品模拟物探讨了时间、温度、酸度、乙醇浓度、微波加热时间、油脂6种因素对BPA迁移率的影响。结果 BPA在0.0464~1.044μg/m L内线性关系良好(r2=0.9993),精密度、稳定性、重复性的RSD分别为0.81%、1.42%、2.59%,加样回收率范围为95.0%~96.9%,RSD为0.80%。通过对液体食品模拟物中BPA含量的检测,发现随着储存时间延长、温度升高、酸度和乙醇浓度增加、微波加热时间延长、油脂增加,BPA从塑料食品包装材料转移到饮用品中的迁移率增加。结论正确使用塑料食品包装,对于减少BPA在体内蓄积至关重要。 展开更多
关键词 塑料食品包装材料 液体饮品模拟 双酚A 迁移率 高效液相色谱法
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Comparison of a Full Second-Order Moment Model and an Algebraic Stress Two-Phase Turbulence Model for Simulating Bubble-Liquid Flows in a Bubble Column 被引量:3
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作者 周力行 杨玟 +2 位作者 廉春英 L.S.Fan D.J.Lee 《Chinese Journal of Chemical Engineering》 SCIE EI CAS CSCD 2002年第2期142-148,共7页
A full second-order moment (FSM) model and an algebraic stress (ASM) two-phase turbulence modelare proposed and applied to predict turbulent bubble-liquid flows in a 2D rectangular bubble column. Predictiongives the b... A full second-order moment (FSM) model and an algebraic stress (ASM) two-phase turbulence modelare proposed and applied to predict turbulent bubble-liquid flows in a 2D rectangular bubble column. Predictiongives the bubble and liquid velocities, bubble volume fraction, bubble and liquid Reynolds stresses and bubble-liquidvelocity correlation. For predicted two-phase velocities and bubble volume fraction there is only slight differencebetween these two models, and the simulation results using both two models are in good agreement with the particleimage velocimetry (PIV) measurements. Although the predicted two-phase Reynolds stresses using the FSM are insomewhat better agreement with the PIV measurements than those predicted using the ASM, the Reynolds stressespredicted using both two models are in general agreement with the experiments. Therefore, it is suggested to usethe ASM two-phase turbulence model in engineering application for saving the computation time. 展开更多
关键词 second-order moment model two-phase turbulence bubble-liquid flow bubble column
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Numerical Study of Pinching Liquid Filament Using VOF Method 被引量:6
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作者 洪若瑜 《Chinese Journal of Chemical Engineering》 SCIE EI CAS CSCD 2003年第5期542-549,共8页
Study on pinching liquid nlament in literature was reviewed. The breakup of liquid filaments under surface tension is governed by incompressible, two-dimensional (2-D), Navier-Stokes Equations. Surface tension was exp... Study on pinching liquid nlament in literature was reviewed. The breakup of liquid filaments under surface tension is governed by incompressible, two-dimensional (2-D), Navier-Stokes Equations. Surface tension was expressed via a CSF (continuous surface force) modei that ensures robustness and accuracy. A new surface reconstruction scheme, alternative phase integration (API) scheme was proposed to solve the kinematic equation, and was compared with other three referential schemes. A general-purpose computer program has been developed for simulating transient, 2-D, incompressible fluid flows with free surface of complex topology. The transient behavior of breaking Newtonian liquid filaments under surface tension was simulated successfully using the developed program. The initial wave growth predicted using API-VOF (volume of fluid) scheme was in good agreement with Rayleigh's linear theory and one-dimensional (1-D) long-wave theory. Both long wave theory and two-dimensional (2-D) API-VOF modei on fine meshes show that as time goes on, these waves pinch off large droplets separated by smaller satellite ones that decrease in size with decreasing wavelength. Self-similar structure during the breakup was found using 1-D and 2-D models, and three breakups were predicted for a typical case. The criterion of filament breaking predicted by the 2-D modei is that the wavelength is longer than the circumference of a filament. The predicted sizes of main and satellite droplets were compared with published experimental measurements. 展开更多
关键词 Navier-Stokes equation control volume volume of fluid free surface liquid-filament breaking
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CFD-PBE simulation of a bubble column in OpenFOAM 被引量:7
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作者 Jingcai Cheng Qian Li +2 位作者 Chao Yang Yongqiang Zhang Zaisha Mao 《Chinese Journal of Chemical Engineering》 SCIE EI CAS CSCD 2018年第9期1773-1784,共12页
A general CFD-PBE(computational fluid dynamics-population balance equation) solver for gas–liquid poly-dispersed flows of both low and high gas volume fractions is developed in OpenFOAM(open-source field operation an... A general CFD-PBE(computational fluid dynamics-population balance equation) solver for gas–liquid poly-dispersed flows of both low and high gas volume fractions is developed in OpenFOAM(open-source field operation and manipulation) in this work. Implementation of this solver in OpenFOAM is illustrated in detail. The PBE is solved with the cell average technique. The coupling between pressure and velocity is dealt with the transient PIMPLE algorithm, which is a merged PISO-SIMPLE(pressure implicit split operator-semi-implicit method for pressure-linked equations) algorithm. Results show generally good agreement with the published experimental data, whereas the modeling precision could be improved further with more sophisticated closure models for interfacial forces, the models for the bubble-induced turbulence and those for bubble coalescence and breakage.The results also indicate that the PBE could be solved out the PIMPLE loop to save much computation time while still preserving the time information on variables. This is important for CFD-PBE modeling of many actual gas–liquid problems, which are commonly high-turbulent flows with intrinsic transient and 3 D characteristics. 展开更多
关键词 Population balance equation (PBE) MULTIPHASE Bubble column OPENFOAM Computational fluid dynamics (CFD)
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Numerical simulation of viscous liquid sloshing by moving-particle semi-implicit method 被引量:16
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作者 潘徐杰 张怀新 卢云涛 《Journal of Marine Science and Application》 2008年第3期184-189,共6页
A meshless numerical simulation method, the moving-particle semi-implicit method (MPS) is presented in this paper to study the sloshing phenomenon in ocean and naval engineering. As a meshless method, MPS uses parti... A meshless numerical simulation method, the moving-particle semi-implicit method (MPS) is presented in this paper to study the sloshing phenomenon in ocean and naval engineering. As a meshless method, MPS uses particles to replace the mesh in traditional methods, the governing equations are discretized by virtue of the relationship of particles, and the Poisson equation of pressure is solved by incomplete Cholesky conjugate gradient method (ICCG), the free surface is tracked by the change of numerical density. A numerical experiment of viscous liquid sloshing tank was presented and compared with the result got by the difference method with the VOF, and an additional modification step was added to make the simulation more stable. The results show that the MPS method is suitable for the simulation of viscous liquid sloshing, with the advantage in arranging the particles easily, especially on some complex curved surface. 展开更多
关键词 SLOSHING liquid tank viscous fluid incompressible fluid free surface meshless moving-particle semi-implicit method (MPS)
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CFD simulation of gas–liquid flow in a high-pressure bubble column with a modified population balance model 被引量:5
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作者 Bo Zhang Lingtong Kong +3 位作者 Haibo Jin Guangxiang He Suohe Yang Xiaoyan Guo 《Chinese Journal of Chemical Engineering》 SCIE EI CAS CSCD 2018年第6期1350-1358,共9页
In this study,based on the Luo bubble coalescence model,a model correction factor C_e for pressures according to the literature experimental results was introduced in the bubble coalescence efficiency term.Then,a coup... In this study,based on the Luo bubble coalescence model,a model correction factor C_e for pressures according to the literature experimental results was introduced in the bubble coalescence efficiency term.Then,a coupled modified population balance model(PBM) with computational fluid dynamics(CFD) was used to simulate a high-pressure bubble column.The simulation results with and without C_e were compared with the experimental data.The modified CFD-PBM coupled model was used to investigate its applicability to broader experimental conditions.These results showed that the modified CFD-PBM coupled model can predict the hydrodynamic behaviors under various operating conditions. 展开更多
关键词 High-pressure bubble column Bubble coalescence Computational fluid dynamics Population balance model
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A Numerical Study of Liquid Sloshing in a Two-dimensional Tank under External Excitations 被引量:6
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作者 Ling Hou Fangcheng Li Chunliang Wu 《Journal of Marine Science and Application》 2012年第3期305-310,共6页
In this research, liquid sloshing behavior in a 2-D rectangular tank was simulated using ANSYS-FLUENT software subject to single or multiple-coupled external excitations (such as sway coupled with roll, and sway and ... In this research, liquid sloshing behavior in a 2-D rectangular tank was simulated using ANSYS-FLUENT software subject to single or multiple-coupled external excitations (such as sway coupled with roll, and sway and roll coupled with heave). The volume of fluid (VOF) method was used to track the free surface of sloshing. External excitation was imposed through the motion of the tank by using the dynamic mesh technique. The study shows that if the tank is subjected to multiple coupled excitations and resonant excitation frequencies, liquid sloshing will become violent and sloshing loads, including impact on the top wall, will be intensified. 展开更多
关键词 liquid sloshing multiple coupled excitations computational fluid dynamics (CFD) dynamic meshtechnique
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Computational fluid dynamics simulation of formaldehyde emission characteristics and its experimental validation in environment chamber 被引量:2
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作者 刘志坚 《Journal of Chongqing University》 CAS 2010年第3期124-132,共9页
We investigated the effect of supply air rate and temperature on formaldehyde emission characteristics in an environment chamber.A three-dimensional computational fluid dynamics(CFD) chamber model for simulating forma... We investigated the effect of supply air rate and temperature on formaldehyde emission characteristics in an environment chamber.A three-dimensional computational fluid dynamics(CFD) chamber model for simulating formaldehyde emission in twelve different cases was developed for obtaining formaldehyde concentration by the area-weighted average method.Laboratory experiments were conducted in an environment chamber to validate the simulation results of twelve different cases and the formaldehyde concentration was measured by continuous sampling.The results show that there was good agreement between the model prediction and the experimental values within 4.3 difference for each case.The CFD simulation results varied in the range from 0.21 mg/m3 to 0.94 mg/m3,and the measuring results in the range from 0.17 mg/m3 to 0.87 mg/m3.The variation trend of formaldehyde concentration with supply air rate and temperature variation for CFD simulation and experiment measuring was consistent.With the existence of steady formaldehyde emission sources,formaldehyde concentration generally increased with the increase of temperature,and it decreased with the increase of air supply rate.We also provided some reasonable suggestions to reduce formaldehyde concentration and to improve indoor air quality for newly decorated rooms. 展开更多
关键词 formaldehyde concentration environment chamber computational fluid dynamics simulation supply air rate TEMPERATURE
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Characterization on the hydrodynamics of a covering-plate Rushton impeller 被引量:2
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作者 Tenglong Su Fengling Yang +1 位作者 Meiting Li Kanghui Wu 《Chinese Journal of Chemical Engineering》 SCIE EI CAS CSCD 2018年第6期1392-1400,共9页
A modified Rushton impeller with two circular covering-plates mounted on the upper and lower sides of the blades was designed.There are gaps between the plates and the blades.The turbulent hydrodynamics was analyzed b... A modified Rushton impeller with two circular covering-plates mounted on the upper and lower sides of the blades was designed.There are gaps between the plates and the blades.The turbulent hydrodynamics was analyzed by the computational fluid dynamics(CFD) method.Firstly,the reliability of the numerical model and simulation method was verified by comparing with the experimental results from literature.Subsequently,the power consumption,flow pattern,mean velocity and mixing time of the covering-plate Rushton impeller(RT-C) were studied and compared with the standard Rushton impeller(RT) operated under the same conditions.Results show that the power consumption can be decreased about 18%.Compared with the almost unchanged flow field in the lower stirred tank,the mean velocity was increased at the upper half of the stirred tank.And in the impeller region,the mean axial and radial velocities were increased,the mean tangential velocity was decreased.In addition,the average mixing time of RT-C was shortened about 4.14% than the counterpart of RT.The conclusions obtained here indicated that RT-C has a more effective mixing performance and it can be used as an alternative of RT in the process industries. 展开更多
关键词 Covering-plate Rushton impeller(RT-C) Power consumption Flow pattern Mean velocity Mixing time Computational fluid dynamics(CFD)
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Microstructure,hardness and corrosion properties of laser processed Ti6Al4V-based composites 被引量:5
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作者 N.M.BALOYI A.P.I.POPOOLA S.L.PITYANA 《Transactions of Nonferrous Metals Society of China》 SCIE EI CAS CSCD 2015年第9期2912-2923,共12页
Nb and Ti-13 Nb powders were used for improving the surface of Ti6Al4 V alloy.The deposition of the powders was carried out at various laser powers.The scanning electron microscopy(SEM)-EDS and optical microscopy we... Nb and Ti-13 Nb powders were used for improving the surface of Ti6Al4 V alloy.The deposition of the powders was carried out at various laser powers.The scanning electron microscopy(SEM)-EDS and optical microscopy were used for characterization.X-ray diffractometer(XRD) was used for analyzing the elemental composition and phase constituents.The hardness,wear and corrosion properties were achieved.The corrosion and the wear behaviours of the deposited layers were studied in a Hanks solution(simulated body fluid,SBF).The microstructures of Nb coatings reveal the presence of orthorhombic,dendritic α″ and metastable β-Nb phases which produce uneven hardness with an average of HV 364.For Ti-13 Nb coatings,martensitic α′ and metastable β-Nb phases with an average hardness of HV 423 were observed.The resistance of wear on dry sliding of Ti-13 Nb coating is attributed to the increase in hardness.Experimental results indicate that deposition of Nb and Ti-13 Nb on Ti6Al4 V grossly reduces the mass fractions of Al and V in all coatings.In SBF,Nb reinforcement produces the best coating that reveals the best wear and corrosion resistances as compared with the substrate.Hence,this coating will perform best for orthopaedic implant material enhancement. 展开更多
关键词 Ti6Al4V-based composite Nb simulated body fluid laser deposition PASSIVATION MICROSTRUCTURE corrosion property
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Improvement of conventional liquid desiccant dehumidification technology
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作者 王俐 连之伟 《Journal of Southeast University(English Edition)》 EI CAS 2010年第2期212-216,共5页
A new system of liquid desiccant dehumidification,called ultrasound atomization dehumidification system,is proposed.In this system,a packed bed is replaced by ultrasound atomization technology,so high resistance and l... A new system of liquid desiccant dehumidification,called ultrasound atomization dehumidification system,is proposed.In this system,a packed bed is replaced by ultrasound atomization technology,so high resistance and liquid desiccant consumption caused by the packed bed are avoided.A mathematical model is established to predict the efficiency and the liquid consumption of the dehumidification process under ideal conditions.Through comparing the simulation results with the experimental data of a conventional packed-bed dehumidifier,it is found that the liquid desiccant consumption of the conventional packed-bed dehumidifier is much greater than that under ideal conditions.In the proposed system,the dehumidification process occurs on the surfaces of the micron liquid desiccant droplets produced with the irradiation of ultrasound,so there is a greater contact area created with the same quantity of the liquid desiccant;moreover,the power consumption is lower because there are no nozzles and no solution pump.It can be seen that this new system is closer to ideal conditions when compared with the conventional liquid desiccant dehumidification system. 展开更多
关键词 packed bed liquid desiccant dehumidification atomization dehumidification ULTRASOUND SIMULATION
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