scholarly journals Nuclear rocket shielding methods, modification, updating, and input data preparation. Volume V. Two-dimensional, discrete ordinates transport technique

1970 ◽  
Author(s):  
R.G. Soltesz ◽  
R.K. Disney ◽  
J. Jedruch ◽  
S.L. Zeigler
Author(s):  
Morteza Rahmanpour ◽  
Reza Ebrahimi ◽  
Mehrzad Shams

A numerical method for calculation of strong radiation for two-dimensional reactive air flow field is developed. The governing equations are taken to be two dimensional, compressible Reynolds-average Navier-Stokes and species transport equations. Also, radiation heat flux in energy equation is evaluated using a model of discrete ordinate method. The model used S4 approximation to reduce the governing system of integro-differential equations to coupled set of partial differential equations. A multiband model is used to construct absorption coefficients. Tangent slab approximation is assumed to determine the characteristic parameters needed in the Discrete Ordinates Method. The turbulent diffusion and heat fluxes are modeled by Baldwin and Lomax method. The flow solution is obtained with a fully implicit time marching method. A thermochemical nonequilibrium formulation appropriate to hypersonic transitional flow of air is presented. The method is compared with existing experimental results and good agreement is observed.


2011 ◽  
Vol 47 (3) ◽  
Author(s):  
Carl J. Legleiter ◽  
Phaedon C. Kyriakidis ◽  
Richard R. McDonald ◽  
Jonathan M. Nelson

1967 ◽  
Vol 89 (4) ◽  
pp. 824-830 ◽  
Author(s):  
S. R. Bland ◽  
R. H. Rhyne ◽  
H. B. Pierce

Vibration phenomena associated with narrow channel flow have come under study as a result of the core failure of an early nuclear rocket engine. Since the mechanism of this vibration instability was not well understood at the time of failure, an investigation of a simple system consisting of a rigid plate with two degrees of spring-restrained freedom in a two-dimensional channel has been made both experimentally and analytically. The results show a strong dependence of the flow rate required for plate oscillation on the channel width (normal to plate).


2003 ◽  
Vol 42 (4) ◽  
pp. 343-359 ◽  
Author(s):  
Hong-Mo Koo ◽  
Rodolphe Vaillon ◽  
Vincent Goutière ◽  
Vital Le Dez ◽  
Hojin Cha ◽  
...  

2000 ◽  
Vol 134 (2) ◽  
pp. 121-134 ◽  
Author(s):  
George M. Daskalov ◽  
Randal S. Baker ◽  
Robert C. Little ◽  
David W. O. Rogers ◽  
Jeffrey F. Williamson

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