Effect of High-Enthalpy Air Chemistry on Stagnation Point Heat Flux

2014 ◽  
Vol 28 (2) ◽  
pp. 356-359 ◽  
Author(s):  
D. Siva K. Reddy ◽  
Bijaylakshmi Saikia ◽  
Krishnendu Sinha
Keyword(s):  
Heat Flux ◽  
Stagnation Point ◽  
High Enthalpy ◽  
Air Chemistry ◽  
Stagnation Point Heat Flux

Stagnation point heat flux in hypersonic high enthalpy flow

Shock Waves ◽  
1992 ◽  
Vol 2 (1) ◽  
pp. 43-47 ◽  
Author(s):  
S. L. Gai ◽  
N. R. Mudford
Keyword(s):  
Heat Flux ◽  
Stagnation Point ◽  
High Enthalpy ◽  
Stagnation Point Heat Flux

Recasting the Fay-Riddell formulae for computing the stagnation point heat flux

2000 ◽  
Vol 214 (2) ◽  
pp. 115-120 ◽  
Author(s):  
G Zuppardi ◽  
A Esposito
Keyword(s):  
Heat Flux ◽  
Stagnation Point ◽  
High Speed ◽  
Operating Conditions ◽  
Navier Stokes ◽  
Total Enthalpy ◽  
High Enthalpy ◽  
Computing Procedure ◽  
The University ◽  
Made In

The Fay-Riddell formulae, used to compute the heat flux at the stagnation point of spherical bodies in very high speed, laminar flow and dissociating air, have been revived and recast. As these formulae were obtained by fitting a number of results of the original Fay-Riddell computing procedure, which suffered from inaccuracies concerning operative parameters, it is to be expected that these inaccuracies also influence the correctness of the formulae. A sensitivity analysis has been made in order to identify the most critical parameter. Recast formulae have been calibrated using the results of the improved version of the Fay-Riddell computing procedure and then validated both by numerical results of a Navier-Stokes code and by experimental data. For this purpose two sets of heat flux measurements have been made in HEBDAF (high enthalpy blown-down arc facility) at the University of Naples, matching the operating conditions of the formula for a frozen boundary layer and non-catalytic wall. Recast formulae are valid in the range of free-stream total enthalpy between 3 and 37 MJ/kg.

Improved Fay-Riddell Procedure to Compute the Stagnation Point Heat Flux

1998 ◽  
Vol 35 (3) ◽  
pp. 403-405 ◽  
Author(s):  
Gennaro Zuppardi ◽  
Gianpaolo Verde
Keyword(s):  
Heat Flux ◽  
Stagnation Point ◽  
Stagnation Point Heat Flux
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