COMPUTATIONAL STUDY OF THE ASPECT RATIO EFFECT ON LIQUID METAL FLOW IN A RECTANGULAR DUCT WITH AND WITHOUT MAGNETIC FIELD

被引：0

作者：

Tigrine, Z. ^{[1
,2
]}

Lecheheb, S. ^{[1
,3
]}

Bouabdallah, A. ^{[1
]}

Mokhtari, F. ^{[1
]}

Kharicha, A. ^{[4
]}

机构：

[1] Univ Sci & Technol Houari Boumediene USTHB, Fac Phys, Lab Thermodynam & Syst Energet, BP32 El Alia, Algiers 16111, Algeria

[2] Ctr Dev Energies Renouvelables, Unite Dev Equipements Solaires, Bou Ismail 42415, W Tipaza, Algeria

[3] Ctr Dev Energies Renouvelables, Route Observ,BP 62, Bouzareah 16340, Algeria

[4] Univ Leoben, Montanuniv Leoben, Dept Met, Franz Josef Str 18, Leoben, Austria

来源：

MAGNETOHYDRODYNAMICS | 2022年 / 58卷 / 03期

关键词：

Magnetohydrodynamics; liquid metal; numerical simulations; aspect ratio; OPTIMAL STREAKS; WAVES; CONVECTION; STABILITY;

D O I：

10.22364/mhd.58.3.8

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

We present a numerical investigation of the three-dimensional geometry effect on liquid metal flows in a rectangular duct subject to a transverse magnetic field using miniature cylinders immersed in fluid. Simulations are performed by means of a numerical method based on the finite volume method. The considered liquid metal is the 17Li83Pb eutectic alloy evolving in a rectangular channel. The influence of forced convection and magnetic field is studied. Stream -wise counter rotating vortices are created in a spanwise direction by small devices intended for controlling the secondary flow near the wall region. It is found that the mushroom structure dominates in the flow at a low Reynolds number Reh <= 272. With a large Reynolds number, the flow regime is unstable downstream the duct showing horseshoe vortex patterns. By increasing the aspect ratio of the rectangular duct, the onset of steady streaks is delayed.

引用

页码：327 / 338

页数：12

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