Compressible Boundary-Layer Swirling Flow in a Nozzle and a Diffuser With Highly Cooled Wall

[+] Author and Article Information
M. Kumari, G. Nath

Department of Applied Mathematics, Indian Institute of Science, Bangalore-560012, India

J. Appl. Mech 46(2), 275-280 (Jun 01, 1979) (6 pages) doi:10.1115/1.3424541 History: Received June 01, 1978; Revised November 01, 1978; Online July 12, 2010


The steady laminar compressible boundary-layer swirling flow with variable gas properties and mass transfer through a conical nozzle, and a diffuser with a highly cooled wall has been studied. The partial differential equations governing the nonsimilar flow have been transformed to a system of coordinates using modified Lees transformation. The resulting equations are transformed into coordinates having finite ranges by means of a transformation which maps an infinite region into a finite region. The ensuing equations are then solved numerically using an implicit finite-difference scheme. The results indicate that the variation of the density-viscosity product across the boundary layer and mass transfer have strong effect on the skin friction and heat transfer. Separationless flow along the entire length of the diffuser can be obtained by applying suction. The results are found to be in good agreement with those of the local nonsimilarity method but they differ appreciably from those of the local similarity method.

Copyright © 1979 by ASME
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