The near wall behavior of an impinging jet

被引：54
作者：
Guerra, DRS
Su, J
Freire, APS
机构：
[1] Univ Fed Rio de Janeiro, COPPE, PEM, BR-21945970 Rio De Janeiro, Brazil
[2] Univ Fed Rio de Janeiro, COPPE, PEN, BR-21945970 Rio De Janeiro, Brazil
来源：
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER | 2005年 / 48卷 / 14期
关键词：
impinging jet; law of the wall; hot-wire anemometry;
D O I：
10.1016/j.ijheatmasstransfer.2005.01.027
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
The present work investigates the applicability of scaling log-laws to the turbulent impinging jet. Both, the velocity and the temperature fields are studied under this assumption. To validate the proposed expressions, a detailed experimental program was carried out based on thermal anemometry. The experiments were conducted for one nozzle-to-plate spacing (H/D = 2.0) and Reynolds number of 35,000. A constant wall heat flux condition was achieved by conducting electricity through thin resistors that were placed beneath an aluminum disk. Measurements of local velocity and of temperature distributions are presented as well as longitudinal turbulence profiles. The mean temperature profiles were measured through thermocouples. (c) 2005 Published by Elsevier Ltd.
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页码：2829 / 2840
页数：12
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