Mach wave and acoustical wave structure in nonequilibrium gas-particle flows / Joseph T. C. Liu.

Format:

Book

Author/Creator:

Liu, Joseph T. C., author.

Series:

Cambridge elements. Elements in aerospace engineering, 2631-7850.

Cambridge elements. Elements in aerospace engineering, 2631-7850

Language:

English

Subjects (All):

Gas dynamics.

Gas flow.

Shock waves.

Sound-waves.

Nonequilibrium thermodynamics.

Physical Description:

1 online resource (66 pages) : digital, PDF file(s).

Edition:

First edition.

Place of Publication:

Cambridge : Cambridge University Press, 2021.

Summary:

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.

Notes:

Title from publisher's bibliographic system (viewed on 11 Oct 2021).

Includes bibliographical references.

ISBN:

9781108997799

1108997791

9781108990585

1108990584