Effect of heat transfer on stability and transition characteristics of boundary-layers

Department of Aerospace Engineering, Middle East Technical University, 06531 Ankara, Turkey
International Journal of Heat and Mass Transfer (Impact Factor: 2.38). 10/2004; 47(22):4697-4712. DOI: 10.1016/j.ijheatmasstransfer.2004.05.026


Stability and transition problems of two dimensional boundary-layers with heated walls have been studied numerically using the linear stability theory. Incompressible stability equations have been modified to account for the variation of temperature dependent fluid properties across the layer. The equations obtained have been solved with an efficient shoot-search technique. Low speed flows of air and water have been analyzed with a wide range of heat transfer rates. In addition to the mean velocity profile characteristics, variable viscosity and density terms in the stability equations also have considerable influence on the results of the stability and transition analysis.

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    • "Since heat flux is a characteristic variable of heat conductivity in boundary layer, the thermal conductivity of boundary layer flow is significantly affected by freestream pulse wave. The influences of the thermal conduct mechanism of boundary layer flow on the evolution of disturbance wave modes and boundary layer stability state were confirmed in [2, 22, 23]. Meanwhile, thermal surface state will be changed by the thermal conduct on the wall surface. "
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