Experimental study of the hydrodynamic and heat transfer of air-assistant circular water jet impinging a flat circular disk

被引：12

作者：

Friedrich, Brian K. ^{[1
]}

Ford, Tamira D. ^{[1
]}

Glaspell, Aspen W. ^{[1
]}

Choo, Kyosung ^{[1
]}

机构：

[1] Youngstown State Univ, Dept Mech & Ind Engn, Youngstown, OH 44555 USA

来源：

INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER | 2017年 / 106卷

关键词：

Two phase; Hydraulic jump; Jet impingement; LIQUID JET; HYDRAULIC JUMP; FLOW CHARACTERISTICS; IMPINGEMENT; SPREAD;

D O I：

10.1016/j.ijheatmasstransfer.2016.09.102

中图分类号：

O414.1 [热力学];

学科分类号：

070201 [理论物理];

摘要：

Hydrodynamic and heat transfer characteristics of the circular hydraulic jump by air-assistant water jet impingement was experimentally investigated using water and air as the test fluid. The effects of volumetric quality (beta = 0-0.9) on the hydraulic jump radius, local Nusselt number and, pressure at the stagnation point were considered under fixed water-flow-rate condition. The results showed that the dimensionless hydraulic jump radius increased with volumetric quality, attained a maximum value at around 0.8 of the volumetric quality, and then decreased. The hydraulic jump of two phase impinging jet is governed by the stagnation pressure and the lateral variation of Nusselt number is governed by hydraulic jump radius. Based on the experimental results, a new correlation for the normalized hydraulic jump radius of the impinging jet are developed as a function of the normalized stagnation pressure alone. (C) 2016 Elsevier Ltd. All rights reserved.

引用

页码：804 / 809

页数：6

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