HEAT-TRANSFER CONTROL BY USING JET DISCHARGE IN REATTACHMENT REGION DOWNSTREAM OF A BACKWARD-FACING STEP

被引：11

作者：

OYAKAWA, K ^{[1
]}

TAIRA, T ^{[1
]}

SENAHA, I ^{[1
]}

NOSOKO, T ^{[1
]}

HIWADA, M ^{[1
]}

机构：

[1] GIFU UNIV,DEPT MECH ENGN,GIFU 50111,JAPAN

来源：

INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER | 1995年 / 22卷 / 03期

关键词：

D O I：

10.1016/0735-1933(95)00025-T

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

The effect of an air jet perpendicular to the main flow across a backward-facing step on the local heat transfer and pressure coefficients was investigated. The relative height of the step and the position and velocity of the jet were varied, with the aim of controlling the heat transfer characteristics. The exit of the jet was set into the wall opposite the step, and created a bubble of circulating air downstream. The reattachment region of the main flow shifted upstream when the jet was moved upstream or its velocity increased in the case of jet located downstream of step, enhancing the heat transfer. When the jet was located nearly opposite the step, a bistable flow pattern was observed, characterized by different sizes of circulating bubble which created different heat transfer and pressure distributions.

引用

页码：343 / 352

页数：10

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