, Volume 10, Issue 1, pp 173-179

Estimation of the critical viscous sublayer in heat transfer problems

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Summary

Imagining a disturbance made on a compressible boundary layer with the help of a heat source, the critical viscous sublayer, through which the skin friction at any point on a surface is connected with the heat transferred from a heated element embedded in it, has been estimated. Under similar conditions of external flow (Ray1)) the ratio of the critical viscous sublayer to the undisturbed boundary layer thickness is about one-tenth in the laminar case and one hundredth in the turbulent case. These results are similar to those (cf.1)) found in shock wave boundary layer interaction problems.

Dedicated to the seventy-fifth birthday of Prof. Dr Albert Betz of Göttingen.