Title

Analysis of Transient Conjugate Heat Transfer to a Free Impinging Jet

Document Type

Article

Publication Date

2000

Publication Source

Journal of Thermophysics and Heat Transfer

Abstract

Transient conjugate heat transfer during the impingement of a freejet of high Prandtl number fluid on a solid disk of finite thickness is considered. When power is turned on at t = 0, a uniform heat Bur is imposed on the disk surface. The numerical model considers both solid and fluid regions. Equations for the conservation of mass, momentum, and energy are solved in the liquid region, with the transport processes at the inlet and exit boundaries, as well as at the solid-liquid and liquid-gas interfaces taken into account. In the solid region, only heat conduction equation is solved. The shape and location of the free surface (liquid-gas interface) is determined iteratively as a part of the solution process by satisfying the kinematic condition as well as the balance of normal and shear forces at this interface. Computed results include the velocity, temperature, and pressure distributions in the fluid and the local and average heat transfer coefficients at the solid-fluid interface. Computations are carried out to investigate the influence of different operating parameters such as jet velocity, disk thickness, and disk material.

Inclusive pages

330-339

ISBN/ISSN

0887-8722

Comments

Permission documentation is on file.

Publisher

American Institute of Aeronautics and Astronautics

Volume

14

Issue

3

Peer Reviewed

yes

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