Publication de 4 numéros par an
ISSN Imprimer: 1065-3090
ISSN En ligne: 1940-4336
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NUMERICAL ANALYSIS AND FLOW VISUALIZATION OF SWIRL-TYPE MIXED CONVECTION IN A HORIZONTAL SQUARE DUCT
RÉSUMÉ
This paper describes the behavior of the swirl flow of mixed convection in a horizontal square duct (side length: L) with heated and cooled side walls. The flow behavior was visualized by the dye-injection method and numerical analysis. The working fluid was water. In the numerical analysis, the governing equations were solved using the SIMPLE procedure and QUICK scheme through the control volume. The Reynolds number Re at the inlet was 100 and the Richardson numbers Ri (= Gr/Re2), where Gr is the Grashof number, ranged from 16 to 180. Results show that the swirl flow was activated with increase of Ri. The pitch length of the swirl flow, P, decreased with an increase of Ri, and the dimensionless pitch length, P/L, was expressed as a power function of Ri.