NONSTATIONARY CONJUGATE PROBLEM OF HEAT TRANSFER IN SUPERSONIC FLOW PAST BODIES IN A WIDE RANGE OF REYNOLDS NUMBERS

In one of our earlier papers, we considered supersonic, laminar boundary-layer fl ows past bodies made of different materials and examined the possibility of controlling the temperature regime of a body immersed in fl ow. In the present work, for the conditions corresponding to aerodynamic experiments and to long fl ight times, we analyzed such values of deceleration parameters when regions of laminar, transitional, and turbulent regimes of fl ow are realized simultaneously in a boundary layer. The possibility of decreasing the level of maximal temperatures depending on the determining criteria of the problem has been evaluated for bodies made of different materials. The expediency of using simplifi ed approaches is shown, including those for nonstationary conditions based on stationary solutions and on well-studied limiting cases of isothermal and adiabatic surface temperatures and allowing the determination of the temperature regimes in the entire range of thermophysical characteristics
In one of our earlier papers, we considered supersonic, laminar boundary-layer fl ows past bodies made of different materials and examined the possibility of controlling the temperature regime of a body immersed in fl ow. In the present work, for the conditions corresponding to aerodynamic experiments and to long fl ight times, we analyzed such values of deceleration parameters when regions of laminar, transitional, and turbulent regimes of fl ow are realized simultaneously in a boundary layer. The possibility of decreasing the level of maximal temperatures depending on the determining criteria of the problem has been evaluated for bodies made of different materials. The expediency of using simplifi ed approaches is shown, including those for nonstationary conditions based on stationary solutions and on well-studied limiting cases of isothermal and adiabatic surface temperatures and allowing the determination of the temperature regimes in the entire range of thermophysical characteristics In one of our earlier papers, we considered supersonic, laminar boundary-layer fl ows past bodies made of different materials and examined the possibility of controlling the temperature regime of a body immersed in fl ow. In the present work, for the conditions corresponding to aerodynamic experiments and to long fl ight times, we analyzed such values of deceleration parameters when regions of laminar, transitional, and turbulent regimes of fl ow are realized simultaneously in a boundary layer. The possibility of decreasing the level of maximal temperatures depending on the determining criteria of the problem has been evaluated for bodies made of different materials. The expediency of using simplifi ed approaches is shown, including those for nonstationary conditions based on stationary solutions and on well-studied limiting cases of isothermal and adiabatic surface temperatures and allowing the determination of the temperature regimes in the entire range of thermophysical characteristics
Author:  V. I. Zinchenko and V. D. Gol′din
Keywords:  aerodynamic heating, conjugate heat transfer, thermal-protective materials, turbulent boundary layer, heat fl ow along the surface, thermophysical characteristics of materials
Page:  1087