Shock wave relations in lunar ash flow

Details Shock wave relations in lunar ash flow Shock wave relations in lunar ash flow

May 1975

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975zamm...55..243p&link_type=abstract

Zeitschrift für angewandte Mathematik und Mechanik, vol. 55, May 1975, p. 243-256.

Mathematics

Flow Characteristics, Lunar Dust, Normal Shock Waves, Shock Wave Propagation, Two Phase Flow, Drag, Equilibrium Flow, Flow Distribution, Kinetic Friction, Pressure Gradients, Virtual Properties, Viscous Drag

Scientific paper

A detailed analysis of steady normal shock waves in a layer of lunar ash by the theory of two phase flow of a mixture of a gas and small solid particles is presented. New terms of pressure gradient and virtual mass forces in the particle momentum equation and the particle kinetic energy and work done in the particle energy equation are included in the fundamental equations and their influences are investigated. The flow variables as functions of the free stream Mach number, initial particle volume fraction and the density ratio G are presented. The thickness of the relaxation zone is found to increase with decreasing initial particle volume fraction and almost independent of G for any given values of free stream Mach number. A new empirical relation of the drag coefficient for the spherical particles in the mixture is proposed to fit experimental data.

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