The applicability of a previously derived solution of the Kubelka-Munk differential equations for the reflectance of an absorbing and scattering material for the case of a zero absorption coefficient to the description of the reflectance of a weakly absorbing, highly scattering material is examined. A solution for the transient heating of a one-dimensional volume reflector is obtained, and the error incurred in the use of the zero absorption coefficient solution is assessed for early times appropriate to the entry heat protection system application. It is found that the small difference in reflectance causes a significant difference in internal temperature.


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    Title :

    Reflectance and unsteady temperature distribution of diffuse reflectors


    Contributors:

    Published in:

    Publication date :

    1973-12-01


    Type of media :

    Miscellaneous


    Type of material :

    No indication


    Language :

    English





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