Film cooling on a convex surface with zero pressure gradient flow

被引：61

作者：

Lutum, E

von Wolfersdorf, J

Weigand, B

Semmler, K

机构：

[1] Univ Stuttgart, Inst Thermodynam Luft & Raumfahrt, D-70569 Stuttgart, Germany

[2] ABB Alstom Technol Ltd, Heat Transfer Grp, CH-5405 Baden, Switzerland

[3] ABB Alstom Power Ltd, Gas Turbine Dev, CH-5401 Baden, Switzerland

来源：

INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER | 2000年 / 43卷 / 16期

关键词：

experimental; film cooling; heat transfer;

D O I：

10.1016/S0017-9310(99)00346-4

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

The adiabatic film cooling effectiveness and heat transfer increase due to film injection was investigated on a convex surface at zero pressure gradient flow. Film cooling results were obtained using thermochromic liquid crystals to measure the local wail temperature distribution. Five different injection configurations, three with cylindrical and two with shaped holes were examined. Coolant injection with cylindrical holes indicates decreased film cooling effectiveness and increased heat transfer at moderate and high blowing rates. Significant higher film cooling effectiveness values and lower heat transfer increase due to film injection were achieved by shaped hole injection compared to cylindrical hole injection. (C) 2000 Elsevier Science Ltd. All rights reserved.

引用

页码：2973 / 2987

页数：15