Effect of bulk viscosity on a hypersonic boundary layer

Details Effect of bulk viscosity on a hypersonic boundary layer Effect of bulk viscosity on a hypersonic boundary layer

Mar 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992phfl....4..491e&link_type=abstract

Physics of Fluids A (ISSN 0899-8213), vol. 4, March 1992, p. 491-495.

Statistics

Computation

8

Computational Fluid Dynamics, Hypersonic Boundary Layer, Stokes Law (Fluid Mechanics), Viscosity, Carbon Dioxide, Flat Plates, Heat Transfer, Laminar Boundary Layer, Planetary Atmospheres, Pressure Gradients, Skin Friction

Scientific paper

The bulk viscosity mu(b) is generally set equal to zero (Stokes' hypothesis). For certain gases, such as CO2, mu(b)/mu exceeds 1000, where mu is the shear viscosity. In this circumstance, the bulk viscosity may substantially alter a hypersonic boundary layer. A general, nonsimilar, laminar, boundary-layer formulation is provided in which the bulk viscosity terms are included as a correction. To obtain explicit results, flow over a flat plate is considered. In addition to the heat transfer, the transverse pressure gradient inside the boundary layer is not zero, whereas the skin friction is unaltered by the bulk viscosity. This analysis is relevant to aerogravity-assisted maneuvers in planetary atmospheres that largely consist of CO2.

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