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非绝热壁面边界在离心压气机数值模拟中的应用 被引量:1

Application of Non-adiabatic Wall Boundary Condition in Numerical Simulation for Centrifugal Compressor
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摘要 随着离心压气机级负荷与温升水平的提高,为了提升对离心压气机的数值模拟精度,在数值模拟中需要采用非绝热壁面边界条件。本文以一台设计良好的现役离心压气机为研究对象,对其数值模拟的壁面边界条件中分别应用了绝热壁面边界条件,以及等温和给定传热系数这两类常用的非绝热壁面边界条件,对比分析了非绝热壁面边界条件对数值模拟精度的影响及其原因。采用给定传热系数壁面边界条件的数值模拟结果中,效率计算误差最小,设计点效率误差较绝热计算下降46.6%,且计算结果对传热系数偏差有一定容忍度;产生上述差异的原因主要源于叶顶损失相关计算。采用等温壁面边界条件的设计点数值模拟结果中,参考温度偏差使等温边界相比绝热边界效率计算误差增大93.2%,说明等温边界对参考温度敏感,其进一步应用需依靠更精确的参考温度。 With the improvement of stage load and temperature level of centrifugal compressor,in order to improve numerical simulation accuracy of centrifugal compressor,it’s necessary to study the influence of non-adiabatic boundary condition on numerical simulation.In this work,numerical simulation of a well-designed active centrifugal compressor was carried out.Adiabatic and two widely used non-adiabatic boundary conditions,isothermal and heat transfer coefficient(HTC)imposed boundary conditions were employed.Numerical accuracy of non-adiabatic simulation was analysed in detail.Simulation with HTC imposed boundary condition reduces46.6%of error in efficiency at design point,in despite of the deviation of the HTC in a certain range.Detailed analysis shows that main difference between HTC imposed and adiabatic boundary conditions comes from tip loss related simulation.Numerical simulation with isothermal boundary condition shows that the efficiency error raises93.2%compared with adiabatic results because of the deviation of the reference temperature.Isothermal boundary condition is sensitive to the reference temperature,and thus the selection of reference temperature should be carefully considered in further study.
作者 吴东润 滕金芳 羌晓青 马威 WU Dong-run;TENG Jin-fang;QIANG Xiao-qing;MA Wei(Shanghai Jiaotong University,Shanghai 200240,China)
机构地区 上海交通大学
出处 《流体机械》 CSCD 北大核心 2017年第11期41-46,33,共7页 Fluid Machinery
关键词 离心压气机 数值模拟 非绝热边界 传热效应 centrifugal compressor numerical simulation non-adiabatic boundary heat transfer effect
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  • 1李清河,高峯.加氢裂化装置液力透平机械密封系统改造[J].中外能源,2012,17(1):80-83. 被引量:6
  • 2刘克安.缠绕式换热器节能特点分析[J].石油化工建设,2011,33(6):78-79. 被引量:9
  • 3徐磊,刘杰,叶志才,任青文.埋地玻璃钢夹砂管地震响应的影响因素分析[J].玻璃钢/复合材料,2012(6):57-63. 被引量:12
  • 4刘雄,陈严,叶枝全.增加风力机叶片翼型后缘厚度对气动性能的影响[J].太阳能学报,2006,27(5):489-495. 被引量:43
  • 5MALOBABIC M, MOBARAK A, RAUTENBERG M. Influence of Heat Transfer Between Turbine and Compres-sor on the Performance of Small Turbocharger. GTSJ International Gas Turbine Congress. Tokyo, Japan, 1983: 566-74.
  • 6MALOBABIC M, RAUTENBERG M. Adiabatic and Non-Adiabatic Efficiencies of Small Turbochargers. International Gas Turbine Congress, Tokyo, Japan, 1987. 57-64.
  • 7RAUTENBERG M, KAMMER N. On the Thermodynamies of Non-Adiabatic Compression and Expansion Processes in Turbomachines. In: 5^th International Conference for Mechanical Power Engineering. Cairo, Egypt, 1984.
  • 8GONG Y, SIRAKOV B T, EPSTEIN A H, et al. Aerothermodynamics of Micro-Turbomachinery, Vienna, Austria, F, 2004. American Society of Mechanical Engineers, New York, NY 10016-5990, United States.
  • 9BOHN D, HEUER T, KUSTERER K. Conjugate Flow and Heat Transfer Investigation of a Turbo Charger: Part Ⅰ: Numerical results, Atlanta, GA, United States, F, 2003. American Society of Mechanical Engineers, New York, NY 10016-5990, United States.
  • 10BOHN D, MORITZ N, WOLFF M. Conjugate Flow and Heat Transfer Investigation of a Turbo Charger: Part Ⅱ: Experimental results, Atlanta, GA, United States, F, 2003. American Society of Mechanical Engineers, New York, NY 10016-5990, United States.

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