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International Heat Transfer Conference 8

ISSN: 2377-424X (online)
ISSN: 2377-4371 (flashdrive)

THE NUMERICAL PREDICTION OF FULLY DEVELOPED TURBULENT FLOW AND HEAT TRANSFER IN A SQUARE DUCT WITH TWO ROUGHENED FACING WALLS

Hideomi Fujita
Chikayuki Nagata Mitsubishi Heavy Industry, Kobe, Japan

Hajime Yokosawa
Department of Informatics and Sciences, Nagoya University Chikusa-ku, Nagoya 464-01, Japan

Chikayuki Nagata
Mitsubishi Heavy Industry, Kobe, Japan

DOI: 10.1615/IHTC8.1850
pages 919-924

Аннотация

A numerical analysis was conducted on a fully developed turbulent flow in a square duct, two opposite walls of which had been roughened. The calculation was performed with the k model and with the k and ε model coupled to the algebraic stress model developed by Launder & Ying. In this duct, a result hitherto unobserved became apparent: namely, there were four relatively large streamwise vortices. The results of the calculation are compared with the authors' experimental results. A prediction of heat transfer was also performed under conditions of a constant wall-temperature.

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