脉动冷却流对冷却孔出口附近流动结构的影响  

INFLUENCE OF PULSE-COOLING FLOW ON THE FLOW STRUCTURE NEARBY COOLING HOLES

作　　者：康顺[1] 马丽[1] 

机构地区：[1]华北电力大学电站设备状态监测与控制教育部重点实验室,北京102206

出　　处：《工程热物理学报》2008年第9期1483-1485,共3页Journal of Engineering Thermophysics

基　　金：国家自然科学基金(No.90718025)

摘　　要：为了探索新型高效能的气膜冷却技术,本文提出了一种脉冲射流冷却方法,并以平板上垂直方形冷却孔为几何模型,以正弦曲线分布的射流速度为冷却气流模型,采用非定常CFD数值模拟技术,在给定横向流速和非定常射流速度的条件下,对孔附近局部三维流场的非定常特性和流场结构进行了数值模拟研究。In order to explore a new high-efficient film-cooling technology,this paper presents a pulsed jet cooling method.Adopting a vertical cooling hole with square shape in a flat plate as the geometry model,and taking the sinusoidal distribution as cooling airflow velocity model,the 3D unsteady flow characteristics as well as the flow structure nearby the hole exit have been investigated by using the unsteady CFD techniques,under given cross flow speed and jet flow speeds.

关 键 词：非定常 脉动 横流中射流 冷却孔 数值模拟 

分 类 号：V231.1[航空宇航科学与技术—航空宇航推进理论与工程]