Shear stress and heat transfer at a stagnation point

Experiments have been carried out to determine the shear stress under a free jet impinging on an impervious surface. The measurements indicate that a minimum occurs at the stagnation point with local maxima adjacent and in close proximity. The failure of the data to indicate a zero stress level is attributed to resolution of the probe. The results are related to the situation of heat transfer in an equivalent flow although the direct application of the simple Reynolds analogy was not possible in this complex case.