哈尔滨工程大学学报2011，Vol.32Issue(9)：1108-1111,4.DOI:10.3969/j.issn.1007-7043.2011.09.002
油气两相流喷射冷却旋转发热圆柱换热机理分析
Numerical research on heat transfer related to oil-air cooling in a hot rotating cylinder
王进礼 1蔡林 2郑洪涛2
作者信息
- 1. 哈尔滨工程大学机电工程学院,黑龙江哈尔滨150001
- 2. 哈尔滨工程大学动力与能源工程学院,黑龙江哈尔滨150001
- 折叠
摘要
Abstract
In order to investigate the oil-air lubrication cooling performance of friction elements, this paper calculated the flow field of a hot rotating cylinder cooled by oil drop and air. The SST (shear-stress transport) k-w turbulence model and DPM (discrete phase model) model for simulation of oil drop were built and FLUENT software was employed to solve the oil-air flow field and jet flow field. The results show that as the distance between nozzle and cylinder (L) increases, the average Nusselt number (Nu) decreases, while the influence of L on the average Nu in the local zone of the cylinder varies. The rotation speed has little effect on Nu, and as Re is increased, the average Nu is increased. The cylinder is divided into four zones according to the flow behaviors, and the effects of L, Re, and Nu on each zone are discussed.关键词
油气润滑/圆柱/CFD/射流冷却/换热机理Key words
oil-air lubrication/ cylinder/ CFD/ jet cooling/ heat transfer mechanisms分类
机械制造引用本文复制引用
王进礼,蔡林,郑洪涛..油气两相流喷射冷却旋转发热圆柱换热机理分析[J].哈尔滨工程大学学报,2011,32(9):1108-1111,4.
