Numerical and experimental study of a jet impinging with axial symmetry with a set of heat exchanger tubes

Eskandar Jamalei; Reza Alayi; Alibakhsh Kasaeian; Fazel Kasaeian; Mohammad Hossein Ahmadi

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Numerical and experimental study of a jet impinging with axial symmetry with a set of heat exchanger tubes

机译：用一组热交换器管撞击轴对称喷射的数值和实验研究

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The main purpose of this research is to predict the flow field of impinging turbulent jet with cylinder in a 3-d state. Nowadays, shear stress has multiple uses in the industry. The study has been conducted in both compressible and incompressible states with output velocities between 100 and 150?m/s, in different eccentricities of jet with respect to the first cylinder, and in various nozzle outlet orifice distances from front edge of the first cylinder. Pressure distribution and shear stress on cylinder surfaces have been determined and efficiency of jet in cleaning the heat exchangers pipes has been analyzed. Also, an experimental investigation has been conducted in order to verify the accuracy of the numerical results. Results show that if the distance between nozzle outlet orifice and the front edge of the first cylinder ( L ) equals 1.52? D ( D is the diameter of the cylinder), the jet has the highest cleaning effect.

机译：该研究的主要目的是预测在3-D状态下用汽缸冲击湍流射流的流场。如今，剪切应力在业内有多次用途。该研究已经在压缩和不可压缩状态中进行，其输出速度在100和150Ωm/ s之间，在不同的射流相对于第一圆筒的不同偏心子之间，以及距第一汽缸前边缘的各种喷嘴出口孔距离。已经确定了汽缸表面上的压力分布和剪切应力，并分析了清洁热交换器管的喷射效率。此外，已经进行了实验研究，以验证数值结果的准确性。结果表明，如果喷嘴出口孔口之间的距离和第一缸（L）的前边缘等于1.52？ D（D是圆筒的直径），喷射器具有最高的清洁效果。

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来源
《Mechanics & Industry》 |2018年第1期|共15页
作者
Eskandar Jamalei; Reza Alayi; Alibakhsh Kasaeian; Fazel Kasaeian; Mohammad Hossein Ahmadi;
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作者单位

Department of Mechanical Engineering Germi Branch Islamic Azad University Germi Iran;

Department of Mechanical Engineering Germi Branch Islamic Azad University Germi Iran;

Department of Renewable Energies Faculty of New Science &

Technologies University of Tehran Tehran Iran;

Department of Materials Science and Engineering Sharif University of Technology Tehran Iran;

Faculty of Mechanical Engineering Shahrood University of Technology Shahrood Iran;

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原文格式 PDF
正文语种 eng
中图分类机械、仪表工业;
关键词
Impinging turbulent jet; compressible 3D flow; hydrodynamic analysis; cylinder; turbulence model;

机译：撞击湍流喷射;可压缩3D流动;流体动力学分析;圆柱形;湍流模型;

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1. Numerical and experimental study of a jet impinging with axial symmetry with a set of heat exchanger tubes [J] . Eskandar Jamalei, Reza Alayi, Alibakhsh Kasaeian, Mechanics & Industry . 2018,第1期

机译：用一组热交换器管撞击轴对称喷射的数值和实验研究
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7. Shell-side single-phase flows and heat transfer in shell-and-tube heat exchangers. 3rd Report. Experimental study on axial and circumferential distribution of local heat transfer coefficients around a tube bundle. [O] . Hitoshi MATSUSHIMA, Takehiko YANAGIDA, Wataru NAKAYAMA, 1987

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Numerical and experimental study of a jet impinging with axial symmetry with a set of heat exchanger tubes

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