Transport Phenomena in Thermal Engineering. Volume 2

ISBN Print: 1-56700-015-0

COMPUTATION OF HEAT TRANSFER FROM IMPINGING TURBULENT JETS

Purchase PDF Purchase PDF $35.00

DOI: 10.1615/ISTP-VI.850
pages 1308-1313

B. H. Chang School of Engineering and Applied Science, University of California, Los Angeles, CA 90024-1597, USA

Anthony F. Mills Mechanical and Aerospace Engineering Department, University of California, Los Angeles, CA 90095, U.S.A.

Abstract

An axisymmetric jet impinging on a flat plate was simulated using a low-Reynolds number k−ε model. The accuracy of the numerical calculations was validated by comparing the predicted flow fields with experimental data for various nozzle-plate distance to jet diameter ratios (H/d) and Reynolds numbers. Heat transfer predictions for various H/d showed good agreement with experimental data in the wall jet region, and the complex behavior of heat transfer for small H/d is predicted. However, predictions in the neighborhood of the stagnation point were poor for small H/d. The results suggest that improved modelling in the equation for the dissipation rate of the turbulence kinetic energy is required.

Begell Recommend

Electrospinning of Micro- and Nanofibers: Fundamentals in Separation and Filtration Processes Electrospinning of Micro- and Nanofibers: Fundamentals in Separation and Filtration Processes Y. Filatov
A. Budyka
V. Kirichenko ISBN Print: 978-1-56700-241-6
ISBN Online: 978-1-56700-240-9
 Thermal Radiation in Disperse Systems: An Engineering Approach Thermal Radiation in Disperse Systems: An Engineering Approach Leonid A. Dombrovsky
Dominique Baillis ISBN Print: 978-1-56700-268-3
ISBN Online: 978-1-56700-351-2