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Steady flow past sudden expansions at large Reynolds number. I - Boundary layer solutions (1986)

Milos, F. S. ; Acrivos, A.

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Publication Date: 2019-07-12

Description: A global Newton method is used to obtain accurate finite difference solutions for uniform inflows to several sudden expansion geometries, avoiding the instabilities encountered at large Reynolds numbers. Steady solutions for lambda values greater than those attained previously are obtained only if lambda is below a critical value. The presence of a singularity at this critical value renders invalid the assumptions of the boundary layer model. The results indicate that for uniform inflows and smaller values of the expansion ratio, the eddy length will no longer increase linearly with R when R becomes sufficiently large.

Keywords: FLUID MECHANICS AND HEAT TRANSFER

Type: Physics of Fluids (ISSN 0031-9171); 29; 1353-135

Format: text

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