ISSN:
1573-8507
Source:
Springer Online Journal Archives 1860-2000
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
,
Physics
Notes:
Abstract The variation of the shape of bodies exposed to aerodynamic ablation has been the subject of a considerable amount of research. One particular aspect of the general problem, namely, the problem of the steady-state shapes, i.e., those that do not vary as a result of ablation, was solved in [1, 2] for convective heat transfer on the assumption that the effective enthalpy of the material is constant. In this case a distinctive feature of the solution is the presence of corner points (breaks) on the steady-state shapes. Here, the problem is solved without assuming a constant effective enthalpy — the ablation rate is determined on the basis of a numerical solution of the equations describing the ablation of glassy materials, the flow of the molten film over the surface being calculated on the basis of the complete system of boundary-layer equations for an incompressible fluid [3]. It is shown that for a uniform heat transfer regime (laminar or turbulent) the steady-state shapes are smooth bodies without corner points. In the mixed heat transfer regime, in the general case the problem has no solution.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF01051426
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