CFD simulation of turbulent flow and heat transfer over rough surfaces

被引：9

作者：

Chaib, Khaled ^{[1
]}

Driss, Nehari ^{[2
]}

Sad Chemloul, Nouredine ^{[3
]}

机构：

[1] USTO MB, Fac Genie Mecan, Oran 31000, Algeria

[2] Ctr Univ Ain Temouchent, Lab Struct Intelligentes, Algiers 46000, Algeria

[3] Univ Ibn Khaldoun, Dept Genie Mecan, Tiaret 14000, Algeria

来源：

INTERNATIONAL CONFERENCE ON TECHNOLOGIES AND MATERIALS FOR RENEWABLE ENERGY, ENVIRONMENT AND SUSTAINABILITY -TMREES15 | 2015年 / 74卷

关键词：

Rough surfaces; Turbulent heat transfer; Nusselt number; ANSYS Fluent; NUMERICAL-SIMULATION; WAVY; CYLINDERS;

D O I：

10.1016/j.egypro.2015.07.826

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

A three-dimensional numerical study of computational fluid dynamics and heat transfer simulations is conducted for a turbulent flow over rough surfaces. Numerical solutions were obtained using commercial software ANSYS FLIJENT 6.3.26 thr a Reynolds number Re=6760. The working fluid was air (Pr congruent to 0.71). Mean velocity, turbulent kinetic energy and local Nusselt numbers are obtained. It is seen that present hydrodynamic results are in good agreement with (DNS) results. The thermal results obtained show that the use of the undulations has a great influence on the heat transfer. This undulation increases the heat exchange between the fluid in motion and the heated wall. The result shows that the double undulation compares to the simple undulation help to increase Nusselt number by 10%. (C) 2015 The Authors. Published by Elsevier Ltd.

引用

页码：909 / 918

页数：10

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