Experimental And Numerical Study Of Heat Transfer On A Blunt Body In Dusty Hypersonic Flow PDF Download
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Author | : E. B. Vasilevskii |
Publisher | : |
Total Pages | : |
Release | : 1999 |
Genre | : |
ISBN | : |
Download Experimental and Numerical Study of Heat Transfer on a Blunt Body in Dusty Hypersonic Flow Book in PDF, ePub and Kindle
Author | : Homer K. Richards |
Publisher | : |
Total Pages | : 66 |
Release | : 1957 |
Genre | : Aeronautics |
ISBN | : |
Download An Experimental Investigation of Heat Transfer Rates on a Blunt Body in Hypersonic Flow Book in PDF, ePub and Kindle
Author | : Rakhab Chandra Mehta |
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Total Pages | : |
Release | : 2018 |
Genre | : Science |
ISBN | : |
Download Heat Transfer Analysis Without and with Forward Facing Spike Attached to a Blunt Body at High Speed Flow Book in PDF, ePub and Kindle
The present chapter deals with heat transfer analysis around unspiked and spiked bodies at high speeds. A spike attached to a blunt-nosed body drastically alters its flowfield and influences the aerodynamic heating in a high speed flow. The effect of spike length, shape and spike-nose configuration is numerically studied at zero angle of incidence. The numerical analysis describes overall flowfield features over without and with forward facing spike attached to a blunt body at high speed flow. The shock stand-off distance, sonic line, stagnation point velocity gradient and stagnation point heat flux are analyzed and compared with different aerodisk configurations. It is found that the hemispherical aerodisk experiences high wall heat flux as compared to the flat-faced aerodisk. Numerical and experimental studies reveal that the wall heat flux levels are decreased in the presence of the spikes and aerospike as compared to without attached spiked to the blunt-nose basic configuration.
Author | : |
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Total Pages | : 402 |
Release | : 1999 |
Genre | : Thermodynamics |
ISBN | : |
Download 33rd Thermophysics Conference Book in PDF, ePub and Kindle
Author | : Walter B. Olstad |
Publisher | : |
Total Pages | : 92 |
Release | : 1968 |
Genre | : Blunt bodies |
ISBN | : |
Download Blunt-body Stagnation-region Flow with Nongray Radiation Heat Transfer Book in PDF, ePub and Kindle
A singular perturbation solution to the blunt-body stagnation-region flow of an inviscid, radiating gas has been obtained by means of the Poincař-Lighthill-Kuo, or perturbation-of-coordinates, method. A number of results for a gray gas have been presented in order to provide some physical insight into the effects of various parameters on the shock-layer enthalpy profiles and the radiant heat-transfer rates. A nongray absorption-coefficient model was developed which includes, in an approximate way, the important vacuum-ultraviolet contributions of bound-free and line transitions. This model was used to obtain solutions pertinent to the case of reentry into the earth's atmosphere. While the results are restricted to small values of the radiation cooling parameter, which characterizes the relative importance of radiation and convection as energy-transport mechanisms, they cover broad ranges of vehicle velocity, altitude, and nose radius, which are of practical interest. The characteristic enthalpy variation of the model absorption coefficient was found to be nearly independent of altitude and nose radius for fixed vehicle velocity except for velocities lower than 10.67 km/sec. Thus it was possible to correlate certain quantities by plotting these quantities as functions of the nondimensional adiabatic radiant heat-transfer rate for various altitudes and nose radii at fixed vehicle velocity. Among the quantities correlated was the cooling factor (the ratio of the stagnation-point radiant heat-transfer rate to the adiabatic radiant heat-transfer rate). The cooling-factor correlation is particularly useful because it eliminates the need to perform nonadiabatic calculations whenever radiant heat-transfer rates are desired. Also correlated was the factor by which the convective heat-transfer rate is reduced because of radiation losses in the shock layer. Finally, upper-bound estimates were made of the effects of absorption of precursor radiation by the free-stream air on the radiant and convective heat-transfer rates.
Author | : Michael E. Tauber |
Publisher | : |
Total Pages | : 44 |
Release | : 1989 |
Genre | : Aerodynamic heating |
ISBN | : |
Download A Review of High-speed, Convective, Heat-transfer Computation Methods Book in PDF, ePub and Kindle
Author | : |
Publisher | : |
Total Pages | : 654 |
Release | : 1992 |
Genre | : Aeronautics |
ISBN | : |
Download NASA SP. Book in PDF, ePub and Kindle
Author | : Xiang Wen Lin |
Publisher | : |
Total Pages | : |
Release | : 1992 |
Genre | : |
ISBN | : |
Download Numerical Study of Unsteady Heat Transfer and Fluid Flow Over a Bluff Body Book in PDF, ePub and Kindle
Author | : |
Publisher | : |
Total Pages | : 284 |
Release | : 1992 |
Genre | : Aeronautics |
ISBN | : |
Download Scientific and Technical Aerospace Reports Book in PDF, ePub and Kindle
Author | : Randall C. Maydew |
Publisher | : |
Total Pages | : 43 |
Release | : 1967 |
Genre | : Boundary layer |
ISBN | : |
Download Analysis of Heat Transfer and Boundary Layer Transition on a Blunt Body at Hypersonic Speeds Book in PDF, ePub and Kindle