Effect of variable viscosity and thermal conductivity on high-speed slip flow between concentric cylinders

T. C. Lin, R. E. Street
naca-report-1175
1954


Schamberg was the first to solve the differential equations of slip flow, including the Burnett terms, for concentric cylinders assuming constant coefficients of viscosity and conductivity. The problem is solved for variable of viscosity and thermal conductivity in this paper applying a transformation which leads to an iteration method. with the solution for constant coefficients, this method one to approximate the solution for variable coefficients closely after one or two steps. Satisfactory results are to follow from Schamberg's solution by using his values of coefficients multiplied by a constant factor, leading to are denoted as the effective coefficients of viscosity and conductivity.

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