Radiative heat exchange of a meteor body in the approximation of radiant heat conduction
The problem of the thermal and dynamic destruction of large meteor bodies moving in planetary atmospheres is fundamental for the clarification of optical observations and anomalous phenomena in the atmosphere, the determination of the physicochemical properties of meteoroids, and the explanation of the fall of remnants of large meteorites. Therefore, it is important to calculate the coefficient of radiant heat exchange (which is the determining factor under these conditions) for large meteor bodies as they move with hypersonic velocities in an atmosphere. The solution of this problem enables one to find the ablation of a meteorite during its aerodynamic heating and to determine the initial conditions for the solution of problems of the breakup of large bodies and their subsequent motion and ablation. Hypersonic flow of an inviscid gas stream over an axisymmetric blunt body is analyzed with allowance for radiative transfer in a thick-thin approximation. The gas-dynamic problem of the flow of an optically thick gas over a large body is solved by the method of asymptotic joined expansions, using a hypersonic approximation and local self-similarity. An equation is obtained for the coefficient of radiant heat exchange and the peculiarities of such heat exchange for meteor bodies of large size are noted.
- OSTI ID:
- 6903429
- Journal Information:
- Cosmic Res. (Engl. Transl.); (United States), Vol. 24:1
- Country of Publication:
- United States
- Language:
- English
Similar Records
Modeling the Altitude Distribution of Meteor Head Echoes Observed with HPLA Radars: Implications for the Radar Detectability of Meteoroid Populations
Leonid meteor ablation, energy exchange and trail morphology
Related Subjects
GENERAL PHYSICS
METEOROIDS
DECOMPOSITION
RADIANT HEAT TRANSFER
ABLATION
CHEMICAL PROPERTIES
EQUATIONS OF MOTION
GASES
METEORITES
PHYSICAL PROPERTIES
PLANETARY ATMOSPHERES
THERMAL DEGRADATION
THERMODYNAMICS
ATMOSPHERES
CHEMICAL REACTIONS
DIFFERENTIAL EQUATIONS
ENERGY TRANSFER
EQUATIONS
FLUIDS
HEAT TRANSFER
PARTIAL DIFFERENTIAL EQUATIONS
640107* - Astrophysics & Cosmology- Planetary Phenomena