期刊文献+

二次检索

题名
关键词
文摘
作者
第一作者
机构
刊名
分类号
参考文献
作者简介
基金资助
栏目信息

年份

学科

共找到8篇文章
< 1 >
每页显示 20 50 100
Numerical Study of Fluid Dynamics and Heat Transfer Induced by Plasma Discharges 被引量:1
1
作者 俞建阳 陈浮 +1 位作者 刘华坪 宋彦萍 《Plasma Science and Technology》 SCIE EI CAS CSCD 2015年第1期41-49,共9页
A numerical investigation is conducted to explore the evolution of a plasma discharge and its interaction with the fluid flow based on a self-consistent fluid model which couples the discharge dynamics with the fluid ... A numerical investigation is conducted to explore the evolution of a plasma discharge and its interaction with the fluid flow based on a self-consistent fluid model which couples the discharge dynamics with the fluid dynamics.The effects of the applied voltage on the distribution of velocity and temperature in initially static air are parainetrically studied.Furthermore,the spatial structure of plasma discharge and the resulting force contours in streamwise and normal directions are discussed in detail.The result shows that the plasma actuator produces a net force that should always be directed away from the exposed electrode,which results in an ionic wind pushing particles into a jet downstream of the actuator.When the energy added by the plasma is taken into account,the ambient air temperature is increased slightly around the electrode,but the velocity is almost not affected.Therefore it is unlikely that the induced flow is buoyancy driven.For the operating voltages considered in this paper,the maximum induced velocity is found to follow a power law,i.e.,it is proportional to the applied voltage to the 3.5 power.This promises an efficient application in the flow control with plasma actuators. 展开更多
关键词 fluid dynamics heat transfer numerical study dielectric barrier discharge(DBD)
下载PDF
Numerical study on discharge characteristics influenced by secondary electron emission in capacitive RF argon glow discharges by fluid modeling
2
作者 赵璐璐 刘悦 Tagra Samir 《Chinese Physics B》 SCIE EI CAS CSCD 2018年第2期415-422,共8页
A one-dimensional(1D) fluid model of capacitive RF argon glow discharges between two parallel-plate electrodes at low pressure is employed. The influence of the secondary electron emission on the plasma characterist... A one-dimensional(1D) fluid model of capacitive RF argon glow discharges between two parallel-plate electrodes at low pressure is employed. The influence of the secondary electron emission on the plasma characteristics in the discharges is investigated numerically by the model. The results show that as the secondary electron emission coefficient increases,the cycle-averaged electric field has almost no change; the cycle-averaged electron temperature in the bulk plasma almost does not change, but it increases in the two sheath regions; the cycle-averaged ionization rate, electron density, electron current density, ion current density, and total current density all increase. Also, the cycle-averaged secondary electron fluxes on the surfaces of the electrodes increase as the secondary electron emission coefficient increases. The evolutions of the electron flux, the secondary electron flux and the ion flux on the powered electrode increase as the secondary electron emission coefficient increases. The cycle-averaged electron pressure heating, electron Ohmic heating, electron heating, and ion heating in the two sheath regions increase as the secondary electron emission coefficient increases. The cycle-averaged electron energy loss increases with increasing secondary electron emission coefficient. 展开更多
关键词 RF glow discharge secondary electron emission fluid model
下载PDF
DISCHARGE DISTRIBUTION IN STRAIGHT COMPOUND CHANNELS 被引量:8
3
作者 Wang, Wei Cai, Jinde Xu, Weilin 《Journal of Hydrodynamics》 SCIE EI CSCD 1998年第4期31-36,共6页
The existing methods of computing the flow distribution in compound channels with flood plains have been summarized. A new method called the momentum-exchange method was presented and verified with experimental and fi... The existing methods of computing the flow distribution in compound channels with flood plains have been summarized. A new method called the momentum-exchange method was presented and verified with experimental and field data. The results show that the new method is more effective than previous ones. 展开更多
关键词 discharge (fluid mechanics) Flood control Flow of water HYDRODYNAMICS Numerical analysis
原文传递
STUDY ON THE CHARACTERISTICS OF LONG TERM DISCHARGE OF A CATCHMENT 被引量:1
4
作者 Hong, Lin Takase, Keiji Sato, Koichi 《Journal of Hydrodynamics》 SCIE EI CSCD 2000年第2期31-41,共11页
The characteristics of the catchment discharge vary with land use. The characteristics of the long-term discharge of a terraced paddy field catchment were studied. Two kind of tank models for land use were proposed an... The characteristics of the catchment discharge vary with land use. The characteristics of the long-term discharge of a terraced paddy field catchment were studied. Two kind of tank models for land use were proposed and used to simulate the discharge of the catchment: one is a forest type model used as the upper part of the catchment; the other is a paddy field type model used as the lower part of the catchment. The results of the model simulation were analyzed and compared with that of a forest catchment. 展开更多
关键词 discharge (fluid mechanics) Land use MODELS Tanks (containers)
原文传递
RELATION OF DEBRIS FLOW DEPTH AND CURVATURE RADIUS OF DISCHARGE GUIDE DITCH
5
作者 Wang, Wei Xu, Weilin 《Journal of Hydrodynamics》 SCIE EI CSCD 1999年第2期26-31,共6页
Theoretical approach to the relation of different type of debris flow and curvature radius of discharge guide ditch and expression for estimating water surface freeboard, with the consideration of debris flow characte... Theoretical approach to the relation of different type of debris flow and curvature radius of discharge guide ditch and expression for estimating water surface freeboard, with the consideration of debris flow characteristics with rational structure, were described. The relevant formulae were simplified and verified by measurement data. The results show good coincidence of the estimated values with measured data. 展开更多
关键词 Approximation theory discharge (fluid mechanics) Flow of water fluid structure interaction Open channel flow
原文传递
NUMERICAL SIMULATION OF FLOW THROUGH ORIFICE ENERGY-DISSIPATORS IN XIAOLANGDI FLOOD-DISCHAR-GE TUNNEL 被引量:14
6
作者 Qu, Jingxue Xu, Weilin +2 位作者 Yang, Yongquan Wang, Wei Diao, Mingjun 《Journal of Hydrodynamics》 SCIE EI CSCD 2000年第3期41-46,共6页
Cavitation of orifices is one of the main problems of the Xiaolangdi flood discharge tunnels. Along with the decompression experiment, the flow field was calculated by using an axis-symmetrical κ-Ε turbulence model.... Cavitation of orifices is one of the main problems of the Xiaolangdi flood discharge tunnels. Along with the decompression experiment, the flow field was calculated by using an axis-symmetrical κ-Ε turbulence model. The calculated pressure distribution was compared with the measured data and in agreement with each other. The calculated results show that few of the cavitation bubbles generating at the orifice edge can reach the wall under the calculation condition, the force applied on the orifice surface and the flow pattern before the orifice may be improved obviously by adding the vortex elimination ring at the upper side of the orifice. 展开更多
关键词 Computer simulation discharge (fluid mechanics) Energy dissipators Flood control Flow of water
原文传递
THREE-DIMENSIONAL NUMERICAL SIMULATION OF MUL-TIPLE JETS IN SHALLOW FLOWING RECEIVING WATERS 被引量:5
7
作者 Huai, Wenxin 《Journal of Hydrodynamics》 SCIE EI CSCD 2000年第3期19-28,共10页
Simulation of the mixing mechanism of submerged multiport diffusers used to discharge heated water from thermal-electric power plants and households into shallow receiving waters was described. The three-dimensional t... Simulation of the mixing mechanism of submerged multiport diffusers used to discharge heated water from thermal-electric power plants and households into shallow receiving waters was described. The three-dimensional turbulence model and hybrid finite analytic method were used to predict the behavior of near field for multiport buoyant jets in rivers. The predicted temperature dilution and velocity prove good by comparison with available laboratory measurements. An empirical formula for temperature dilution and velocity in near field for this kind of flow was given. The effect of parameters on the dilution behavior of multiple jets were also discussed. 展开更多
关键词 Diffusers (fluid) discharge (fluid mechanics) Flow of water Numerical analysis Thermal effects Turbulent flow
原文传递
STUDY ON JETS IMPACT IN AIR FOR ENERGY DISSIPATION
8
作者 Diao, Mingjun Yang, Yongquan 《Journal of Hydrodynamics》 SCIE EI CSCD 2000年第3期55-58,共4页
This paper is concerned with the applications of water jet impact in air to energy dissipation. The scattered jet flow impinges into the downstream water plunge pool, which greatly improves the inflow condition of the... This paper is concerned with the applications of water jet impact in air to energy dissipation. The scattered jet flow impinges into the downstream water plunge pool, which greatly improves the inflow condition of the submerged jet in the pool and make it diffuse very quickly. The model experiments were conducted, which showed that a large jet flow could be scattered by a small one through impacting. The minimum discharge ratio for flow dispersion was studied. The unequal jet impact in air for energy dissipation was brought forward firstly in this paper as a new type of energy dissipator. 展开更多
关键词 AIR discharge (fluid mechanics) Energy dissipation Energy dissipators Flow of water
原文传递
上一页 1 下一页 到第
使用帮助 返回顶部