✦ LIBER ✦

NUMERICAL PREDICTION OF SEMI-CONFINED JET IMPINGEMENT AND COMPARISON WITH EXPERIMENTAL DATA

✍ Scribed by S. ASHFORTH-FROST; K. JAMBUNATHAN

Publisher: John Wiley and Sons
Year: 1996
Tongue: English
Weight: 730 KB
Volume: 23
Category: Article
ISSN: 0271-2091
DOI: 10.1002/(sici)1097-0363(19960815)23:3<295::aid-fld425>3.0.co;2-t

No coin nor oath required. For personal study only.

✦ Synopsis

The standard k-c eddy viscosity model of turbulence in conjunction with the logarithmic law of the wall has been applied to the prediction of a fblly developed turbulent axisymmetric jet impinging within a semi-conbed space. A single geometry with a Reynolds number of 20,000 and a nozzle-to-plate spacing of two diameters has been considered with inlet boundary conditions based on measured profiles of velocity and turbulence. Velocity, turbulence and heat transfer data have been obtained using laser-Doppler anemometry and liquid crystal thermography respectively. In the developing wall jet, numerical results of heat transfer compare to within 20% of experiment where isotropy prevails and the trends in turbulent kinetic energy are predicted. However, stagnation point heat transfer is overpredicted by about 300%, which is attributed directly to the turbulence model and inapplicability of the wall function.

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