化工学报Issue(2)：583-592,10.DOI:10.3969/j.issn.0438-1157.2014.02.031
熵产方法在旋风分离器内部能耗分析中的应用
Application of entropy generation method for analyzing energy loss of cyclone separator
摘要
Abstract
In this paper, entropy generation analysis is applied to investigate cyclone separator. The Reynolds stress model is used to simulate the flow field in a cyclone separator with adiabatic wall. The energy loss predicted by pressure drop and exergy loss predicted by entropy generation analysis method and exergy analysis method for calculation results of computational fluid dynamics indicate the availability of the second law of thermodynamics for investigating the energy consumption in cyclone separator. The entropy generation due to turbulent dissipation, viscosity in turbulent core flows, fluid friction near the wall, and heat transfer are calculated with the computation of turbulent kinetic dissipation rate, velocity, wall shear stress and temperature. It is found that the fluid friction near the wall and turbulent dissipation are the main factors for energy loss of cyclone separator. The percent of entropy generation in the vicinity of finder vortex and dust exit with the volume ratio of 10% and 5.8% in the cyclone separator is over 14%and 16%, respectively. The result can serve as a direction to decrease energy loss of cyclone separator.关键词
计算流体力学/旋风分离器/雷诺应力模型/流动/熵Key words
CFD/cyclone separator/Reynolds stress model/flow/entropy分类
化学化工引用本文复制引用
段璐,吴小林,姬忠礼..熵产方法在旋风分离器内部能耗分析中的应用[J].化工学报,2014,(2):583-592,10.基金项目
国家重点基础研究发展计划项目（2012CB720500）。@@@@supported by the National Basic Research Program of China (2012CB720500) （2012CB720500）
