Mach Wave and Acoustical Wave Structure in Nonequilibrium Gas-Particle Flows (eBook)

Joseph T. C. Liu (Autor)

eBook Download: PDF

2021
Cambridge University Press (Verlag)
978-1-108-99779-9 (ISBN)

Infos

In this Element, the gas-particle flow problem is formulated with momentum and thermal slip that introduces two relaxation times. Starting from acoustical propagation in a medium in equilibrium, the relaxation-wave equation in airfoil coordinates is derived though a Galilean transformation for uniform flow. Steady planar small perturbation supersonic flow is studied in detail according to Whitham's higher-order waves. The signals owing to wall boundary conditions are damped along the frozen-Mach wave, and are both damped and diffusive along an effective-intermediate Mach wave and diffusive along the equilibrium Mach wave where the bulk of the disturbance propagates. The surface pressure coefficient is obtained exactly for small-disturbance theory, but it is considerably simplified for the small particle-to-gas mass loading approximation, equivalent to a simple-wave approximation. Other relaxation-wave problems are discussed. Martian dust-storm properties in terms of gas-particle flow parameters are estimated.

Produkt-Details

• Erscheint lt. Verlag: 7.10.2021
• Sprache: englisch
• Themenwelt: Technik ► Fahrzeugbau / Schiffbau
• Themenwelt: Technik ► Luft- / Raumfahrttechnik
• ISBN-10: 1-108-99779-1 / 1108997791
• ISBN-13: 978-1-108-99779-9 / 9781108997799