Abstract
A detailed hot-wire measurement of a turbulent natural convection boundary layer is made paying close attention to the characteristics of the near-wall region which has not been clarified quantitatively. Heat transfer rate and wall shear stress are determined from mean temperature and mean velocity profiles on theoretical grounds. These measurements yield important results concerning the availability of the conventional analogy between heat and momentum transfer and the concept of the viscous sublayer for natural convection. Also, the streamwise development of the turbulent boundary layer is systematically investigated for mean velocity, mean temperature and both velocity and temperature fluctuations.
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