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Lunar ash flow with heat transfer.The most important heat-transfer process in the ash flow under consideration is heat convection. Besides the four important nondimensional parameters of isothermal ash flow (Pai et al., 1972), we have three additional important nondimensional parameters: the ratio of the specific heat of the gas, the ratio of the specific heat of the solid particles to that of gas, and the Prandtl number. We reexamine the one dimensional steady ash flow discussed by Pai et al. (1972) by including the effects of heat transfer. Numerical results for the pressure, temperature, density of the gas, velocities of gas and solid particles, and volume fraction of solid particles as function of altitude for various values of the Jeffreys number, initial velocity ratio, and two different gas species (steam and hydrogen) are presented.
Document ID
19730035062
Document Type
Conference Proceedings
Authors
Pai, S. I.
Hsieh, T. (Maryland, University College Park, Md., United States)
O'Keefe, J. A. (NASA Goddard Space Flight Center Greenbelt, Md., United States)
Date Acquired
August 7, 2013
Publication Date
January 1, 1972
Subject Category
SPACE SCIENCES
Meeting Information
Lunar Science Conference(Houston, TX)
Funding Number(s)
CONTRACT_GRANT: NGR-21-002-296
CONTRACT_GRANT: NSG-398
Distribution Limits
Public
Copyright
Other