THE INFLUENCE OF TEMPERATURE ON THE ENTROPY GENERATION OF CYCLONE SEPARATOR
The Reynolds Stress Model (RSM) was used to simulate the flow field in cyclone with adiabatic wall at temperature ranging from 297 K to 1123 K.The volumetric entropy generation rate due to viscosity of fluid, turbulent dissipation and heat transfer is calculated and afterwards integrated over the whole flow domain by the computational data.A new model to determine the entropy generation due to the friction near the wall is proposed.It shows that the turbulent dissipation and the friction near the wall are the main factors for energy loss in cyclone with a percentage of entropy generation caused by them over 50% and 48%, respectively.It is found that the decrease of gas density, resulting from the rise of temperature, contributes mostly to the decrease of energy loss.The distribution of entropy generation rate due to the turbulent dissipation indicates that the regions in the vicinity of finder vortex and dust exit are the major domains in energy consumption.Moreover, the energy loss decreases as the gas temperature rises.
Lu Duan Xiaolin Wu Zhongli JI
College of Chemical Engineering,China University of Petroleum,Beijing,102249,China College of Mechanical and Transportation Engineering,China University of Petroleum,Beijing,102249,Ch
国际会议
The 11th International Conference on Fluidized Bed Technology(CFB-11)(第十一届流化床技术国际会议)
北京
英文
923-928
2014-05-14（万方平台首次上网日期，不代表论文的发表时间）