普朗特数对层流传热和热回收的影响

IF 1.4 4区工程技术 Q2 ENGINEERING, AEROSPACE

Aeronautical Journal Pub Date : 1997-10-01 DOI:10.1017/S0001924000066070

B. V. van Oudheusden

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引用次数: 1

摘要

摘要通过对常性质流动的能量方程进行微扰分析，对描述Prandtl数对层流传热和温度恢复的影响的经典幂律表达式进行了关键性的修正。通过这种方法，Pr依赖关系可以作为一个系统的渐近展开式得到，直至任意阶，这比经典的曲线拟合方法提供了一个更精确和方便的过程。研究了压力梯度和流动掠度对自相似偏航楔形流动的影响。

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A note on the Prandtl number effect on laminar heat transfer and recovery

Abstract A critical revision is made of the classic power-law expressions that describe the effect of the Prandtl number on laminar heat transfer and temperature recovery for Pr near one, by applying a perturbation analysis to the energy equation for constant-property flow. In this way, the Pr dependence is obtained as a systematic asymptotic expansion up to any desired order, which provides a more accurate and convenient procedure than classic curve-fitting methods. The effect of pressure gradient and flow sweep are examined for self-similar yawed wedge flows.

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来源期刊

Aeronautical Journal 工程技术-工程：宇航

CiteScore

3.70

自引率

14.30%

发文量

审稿时长

6-12 weeks

期刊介绍： The Aeronautical Journal contains original papers on all aspects of research, design and development, construction and operation of aircraft and space vehicles. Papers are therefore solicited on all aspects of research, design and development, construction and operation of aircraft and space vehicles. Papers are also welcomed which review, comprehensively, the results of recent research developments in any of the above topics.