Influence of Thermal Protection Material Composition on Heat and Mass Exchange of Body in Spatial Supersonic Flow

2016 ◽  
Vol 683 ◽  
pp. 142-149
Author(s):  
Victor D. Goldin ◽  
Vyacheslav A. Ovchiinikov ◽  
Ivan A. Kotov
Keyword(s):  
Supersonic Flow ◽  
Surface Temperature ◽  
Mass Exchange ◽  
Thermal Protection ◽  
Conjugate Problem ◽  
Material Composition ◽  
Aerodynamic Heating ◽  
Carbon Cloth ◽  
Supersonic Speed ◽  
Heat And Mass Exchange

The conjugate problem of aerodynamic heating of a blunted cone moving in the atmosphere at angle of attack at supersonic speed is considered. Three modifications of a thermal protection material based on coal-plastic with different proportions of a phenol-formalhyde binder and a carbon cloth are investigated. The effect of the material composition on the surface temperature and the mass loss characteristics is analyzed.

Thermal Response of Supersonic Airflow to a Fin Protrusion Situated on a Curved Surface

2009 ◽  
Vol 131 (11) ◽  
Author(s):  
Majid Molki ◽  
David W. Fasig
Keyword(s):  
Experimental Data ◽  
Surface Temperature ◽  
Thermal Protection ◽  
Space Shuttle ◽  
Thermal Response ◽  
Computational Approach ◽  
Aerodynamic Heating ◽  
Undesirable Effect ◽  
Turbulence Transition ◽  
Naca 0012

Aerodynamic heating of an airfoil with a short fin attached to its surface is computationally investigated. This research is motivated by the fact that the gap fillers inserted between the insulation tiles of the space shuttle thermal protection system may sometimes get loose and extend beyond the surface and cause an uneven aerodynamic heating of the surface. It is often difficult for engineers to determine whether the protruded gap filler would cause an undesirable effect in the boundary layer including early turbulence transition or shockwaves that could cause an unsafe increase in surface temperature. In this investigation, the supersonic flow over NACA 0012 airfoil on which a short fin is attached is studied using a computational approach. The method is validated by the experimental data available in published literature. The results indicate a significant increase in the surface temperature in the vicinity of the fin. This elevated temperature extends downstream beyond the location of the fin and covers a large portion of the airfoil downstream of the fin. The fin induces an oblique shockwave followed by an expansion wave.

Surface pressures on a wing moving with supersonic speed

1974 ◽  
Vol 341 (1625) ◽  
pp. 177-193 ◽  
Keyword(s):  
Supersonic Flow ◽  
Delta Wing ◽  
Leading Edge ◽  
Ideal Gas ◽  
Numerical Results ◽  
Coordinate Surface ◽  
Supersonic Speed ◽  
Extrapolation Procedure ◽  
Specific Heats ◽  
Limiting Values

Estimates for pressures on the surface of a given delta wing at zero incidence in a steady uniform stream of air are obtained by numerically integrating two semi-characteristic forms of equations which govern the inviscid supersonic flow of an ideal gas with constant specific heats. In one form of the equations coordinate surfaces are fixed in space so that the surface of the wing, which has round sonic leading edges, is a coordinate surface. In the other, two families of coordinates are chosen to be stream-surfaces. For each form of the equations, a finite difference method has been used to compute the supersonic flow around the wing. Convergence of the numerical results, as the mesh is refined, is slow near the leading edge of the wing and an extrapolation procedure is used to predict limiting values for the pressures on the surface of the wing at two stations where theoretical and experimental results have been given earlier by another worker. At one station differences between the results given here and the results given earlier are significant. The two methods used here produce consistent values for the pressures on the surface of the wing and, on the basis of this numerical evidence together with other cited numerical results, it is concluded that the pressures given here are close to the true theoretical values.

scholarly journals Universal multifunctional device for heat and mass exchange processes during organic raw material processing

2018 ◽  
Vol 6 (1 (96)) ◽  
pp. 47-54 ◽  
Author(s):  
Aleksey Zagorulko ◽  
Andrii Zahorulko ◽  
Kateryna Kasabova ◽  
Vitalii Chervonyi ◽  
Oleksandr Omelchenko ◽  
...  
Keyword(s):  
Material Processing ◽  
Mass Exchange ◽  
Raw Material ◽  
Heat And Mass Exchange ◽  
Exchange Processes ◽  
Multifunctional Device

scholarly journals To determine heat and mass exchange surface in contact utilizers of drop type

2014 ◽  
Vol 1 (8(67)) ◽  
pp. 21
Author(s):  
Михайло Костянтинович Безродний ◽  
Микола Никифорович Голіяд ◽  
Артур Юрійович Рачинський
Keyword(s):  
Mass Exchange ◽  
Heat And Mass Exchange ◽  
Exchange Surface

scholarly journals Modern approaches to the intensification of heat and mass exchange in multi-temperature condensation filters

2021 ◽  
Vol 2039 (1) ◽  
pp. 012018
Author(s):  
M V Malevany ◽  
D A Konovalov
Keyword(s):  
Mass Transfer ◽  
Heat Exchange ◽  
Heat And Mass Transfer ◽  
Liquid Flow ◽  
Mass Exchange ◽  
Single Phase ◽  
Heat And Mass Exchange ◽  
Analytical Review

Abstract The article considers the problems and features of heat and mass exchange on developed surfaces in the conditions of both single-phase and vapour-liquid flow during its condensation. We give a brief analytical review of studies of hydrodynamics and heat exchange in such systems. We analyzed the efficiency of the working channel of the condensation filter and identified problematic points. We offer possible methods for intensifying heat and mass transfer on working surfaces.

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