G47-3 No.8D型风机进气箱内气体流动的数值模拟及结构优化  

Numerical Simulation of Flow Fields and Structure Optimization for G47-3 No.8D Fan Inlet Box

作　　者：刘福庆[1] 王庆霞[2] 徐平[3] 

机构地区：[1]河北国华定州发电有限责任公司,河北省保定市073000 [2]中国电力科学研究院,北京市100192 [3]吉林省电力有限公司吉林供电公司,吉林省吉林市132001

出　　处：《电力建设》2013年第5期58-61,共4页Electric Power Construction

摘　　要：利用数值计算软件对G47-3 No.8D风机进气箱内的三维流场进行了数值研究,发现流场中存在一个小涡流区以及一个由强涡流和回流交织而成的压力损失区域。针对进气箱中流场的分布规律对进气箱进行了改造,并进行数值模拟。结果显示:原模型中的大涡流已经变成2个在强度和尺寸方面均较小的涡流,原模型中的小涡流已经消失,回流也在一定程度上得到抑制。3-demension flow field in inlet box of G47-3 No. 8D fan were studied numerically by using CFD, which showed that there was a small and a pressure loss region formatted by strong eddy current and reflux. According to the distribution of flow field, reformation and simulation were carded out on the inlet box. The results show that the big eddy current in old model has changed into two eddy current which are small in strength and size, the small eddy current in the old model has disappeared, as well as the reflux has been suppressed to some extent.

关 键 词：风机 进气箱 数值模拟 结构优化 

分 类 号：TM621.7[电气工程—电力系统及自动化]