Heat transfer at the stagnation point of the impinging laminar jet

被引：2

作者：

Lemanov, V ^{[1
]}

Matyunin, V ^{[1
]}

Travnicek, Z. ^{[2
]}

机构：

[1] SS Kutateladze Inst Thermophys SB RAS, Novosibirsk, Russia

[2] Czech Acad Sci, Inst Thermomech, Prague, Czech Republic

来源：

XXXVI SIBERIAN THERMOPHYSICAL SEMINAR (STS 36) | 2020年 / 1677卷

基金：

俄罗斯基础研究基金会;

关键词：

D O I：

10.1088/1742-6596/1677/1/012018

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

Heat transfer of an impinging axisymmetric jet at low Reynolds numbers (Re = 250-5000) at the obstacle stagnation point was studied experimentally. An air jet from a long tube was flowing onto a flat heated plate at a constant wall temperature. The distance from the jet beginning to the obstacle was h/d = 20. A connection of thermal parameters (averaged and pulsating) at the stagnation point for the flow at the initial cross-section of the jet was established. For the laminar flow, an increase in heat transfer of more than 200% was observed in the jet in comparison with the turbulent flow. Comparison of the obtained data on heat transfer revealed a significant discrepancy with the well-known correlation formula for impinging jets.

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页数：6

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