Mach Wave and Acoustical Wave Structure in Nonequilibrium Gas-Particle Flows PDF Download
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Author: Joseph T. C. Liu
Publisher: Cambridge University Press
ISBN: 1108997791
Category : Technology & Engineering
Languages : en
Pages : 78
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Book Description
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.
Author: Joseph T. C. Liu
Publisher: Cambridge University Press
ISBN: 1108997791
Category : Technology & Engineering
Languages : en
Pages : 78
Get Book Here
Book Description
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.
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Category : Aeronautics
Languages : en
Pages : 836
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Category : Military research
Languages : en
Pages : 572
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Author: United States. National Aeronautics and Space Administration Scientific and Technical Information Division
Publisher:
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Category : Aeronautics
Languages : en
Pages : 966
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Author: United States. National Aeronautics and Space Administration. Scientific and Technical Information Division
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 956
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Author: United States. National Aeronautics and Space Administration. Scientific and Technical Information Division
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 962
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Category : Mechanics, Applied
Languages : en
Pages : 796
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Category : Aerodynamics
Languages : en
Pages : 638
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Category : Nuclear energy
Languages : en
Pages : 1508
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Book Description
Author: Samuel Temkin
Publisher: Cambridge University Press
ISBN: 9781139444859
Category : Technology & Engineering
Languages : en
Pages : 432
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Book Description
This book is an introduction to the physics of suspensions of bubbles, droplets, and solid particles in both gases and fluids. Rather than treating each combination separately, a unified approach is used that permits most particle-fluid combination types to be discussed together. To do this, the book first presents a detailed discussion of the basic particle motions that small particles can sustain, paying particular attention to translations and pulsations, and to the thermal effects that occur as a result of those motions. The book then introduces the reader to the dynamics and thermodynamics of suspensions, with acoustic motions providing the main focus in the latter part of the book. The important acoustic problems of attenuation and dispersion are discussed from several fundamental perspectives. The book concludes with applications of acoustic techniques to the characterization and modification of suspensions by means of acoustic waves.
