首页> 外文期刊>International Journal of Heat and Mass Transfer >Experimental investigation of impingement heat transfer on a flat and dimpled plate with different crossflow schemes
【24h】

Experimental investigation of impingement heat transfer on a flat and dimpled plate with different crossflow schemes

机译:具有不同错流方案的平板凹坑板上冲击传热的实验研究

获取原文
获取原文并翻译 | 示例
           

摘要

A nine-by-nine jet array impinging on a flat and dimpled plate at Reynolds numbers from 15,000 to 35,000 has been studied by the transient liquid crystal method. The distance between the impingement plate and target plate is adjusted to be 3, 4 and 5 jet diameters. Three jet-induced crossflow schemes, referred as minimum, medium and maximum crossflow correspondingly, have been measured. The local air jet temperature is measured at several positions on the impingement plate to account for an appropriate reference temperature of the heat transfer coefficient. The heat transfer results of the dimpled plate are compared with those of the flat plate. The best heat transfer performance is obtained with the minimum crossflow and narrow jet-to-plate spacing no matter on a flat or dimpled plate. The presence of dimples on the target plate produce higher heat transfer coefficients than the flat plate for maximum and minimum crossflow.
机译:通过瞬态液晶方法研究了一个九乘九的射流阵列,该阵列以雷诺数从15,000到35,000撞击平板和凹板。冲击板和目标板之间的距离调整为3、4和5的喷嘴直径。已经测量了三种喷射引起的错流方案,分别称为最小,中和最大错流。在冲击板上的几个位置处测量局部空气喷射温度,以考虑适当的传热系数参考温度。将凹板的传热结果与平板的传热结果进行比较。无论是平板还是凹板,都能以最小的错流和较窄的射流到板间距获得最佳的传热性能。对于最大和最小的错流,目标板上的凹坑产生的传热系数比平板高。

著录项

  • 来源
    《International Journal of Heat and Mass Transfer》 |2010年第20期|P.3874-3886|共13页
  • 作者

    Yunfei Xing; Bernhard Weigand;

  • 作者单位

    Institut fuer Thermodynamik der Luft- und Raumfahrt (ITIR), Stuttgart University, Pfaffenwaldring 31, 70569 Stuttgart, Germany;

    rnInstitut fuer Thermodynamik der Luft- und Raumfahrt (ITIR), Stuttgart University, Pfaffenwaldring 31, 70569 Stuttgart, Germany;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    impingement cooling; TLC; heat transfer; dimple;

    机译:冲击冷却TLC;传播热量;酒窝;

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号