Applied Scientific Research

, Volume 10, Issue 1, pp 173-179

First online:

Estimation of the critical viscous sublayer in heat transfer problems

  • Ajit Kumar RayAffiliated withDepartment of Aeronautical Engineering Indian Institute of Science

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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.