Numerical Simulation of a Thermoacoustic Refrigerator: II. Stratified Flow around the Stack


Journal Article

The unsteady, two-dimensional, thermally stratified flow in the neighborhood of an idealized thermoacoustic stack is analyzed using a low-Mach-number model that extends the adiabatic flow scheme developed in part I (J. Comput. Phys.127, 424 (1996)). The extension consists of incorporation of numerical solvers for the energy equations in the fluid and the stack plates, and construction and implementation of fast Poisson solver for the velocity potential based on a domain decomposition/boundary Green's function technique. The unsteady computations are used to predict the steady-state, acoustically generated temperature gradient across a two-dimensional couple and to analyze its dependence on the amplitude of the prevailing resonant wave. Computed results are compared to theoretical predictions and experimental data. © 1998 Academic Press.

Full Text

Cited Authors

  • Worlikar, AS; Knio, OM; Klein, R

Published Date

  • August 10, 1998

Published In

Volume / Issue

  • 144 / 2

Start / End Page

  • 299 - 324

International Standard Serial Number (ISSN)

  • 0021-9991

Digital Object Identifier (DOI)

  • 10.1006/jcph.1997.5816

Citation Source

  • Scopus