NUMERICAL INVESTIGATION OF THE INTERACTION BETWEEN THE ROUGHNESS AND THE TRIANGULAR OBSTRUCTIONS IN A RECTANGULAR CHANNEL

被引：0

作者：

Sari Hassoun, Zakaria ^{[1
]}

Aliane, Khaled ^{[1
]}

Akgul, Ali ^{[2
,3
,4
]}

Jarrar, Rabab ^{[5
]}

Asad, Jihad ^{[5
]}

Menni, Younes ^{[6
]}

Ahmad, Hijaz ^{[7
,8
]}

机构：

[1] Abou Bekr Belkaid Univ Tlemcen, Fac Technol, Dept Mech Engn, MECACOMP Lab, Tilimsen, Algeria

[2] Lebanese Amer Univ, Dept Comp Sci & Math, Beirut, Lebanon

[3] Siirt Univ, Art & Sci Fac, Dept Math, Siirt, Turkiye

[4] Near East Univ, Math Res Ctr, Dept Math, Nicosia, Turkiye

[5] Palestine Tech Univ, Fac Appl Sci, Dept Phys, Kadoorie, Palestine

[6] Univ Ctr Salhi Ahmed Naama, Dept Technol, Naama, Algeria

[7] Near East Univ, Operat Res Ctr Healthcare, Nicosia Mersin, Turkiye

[8] Int Telemat Univ Uninettuno, Sect Math, Rome, Italy

来源：

THERMAL SCIENCE | 2023年 / 27卷 / Special Issue 1期

关键词：

numerical simulation; air-flow; triangular obstacles; rugosity; rectangular channel; heat transfer; friction; k-? turbulent model; HEAT-TRANSFER; AUGMENTATION; SIMULATION; DUCT; FLOW;

D O I：

10.2298/TSCI23S1365S

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

The study is conducted around a heat exchanger, its channel is horizontal rect-angular, its upper wall is isothermal, while its lower wall is thermally insulated, containing extended surfaces in the form of triangular obstacles attached in a stag-gered manner periodically. Four models of the channel with various roughnesses were compared in this study. Square, triangular Type 1, triangular Type 2, and triangular Type 3 roughnesses, which are positioned on the hot top part of the channel (absorber), downstream of the last obstacle, are examined to promote heat transfer between the absorber and the heat transfer fluid. The case of triangular roughness (Type 3) is the optimal case in terms of improved heat transfer. More-over, it shows a significant decrease in terms of friction values.

引用

页码：S365 / S372

页数：8

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