The distribution of coolant velocities and wall stresses in closely packed rods

Simple method of predicting friction factors of turbulent flow in non-circular channels

“…with the geometry parameter for Reynolds numbers Re < 10 6 the curvature of the wall (7)(8)(9)(10)(11). Results obtained on annuli by Brighton and Jones [12] showing a dependence of the velocity profile on the curvature of the wall do not agree with measurements by Quarmby [18].…”

Discussion: “Experimental Investigation of Flow Resistance and Wall Shear Stress in the Interior Subchannel of a Triangular Array of Parallel Rods” (Fakory, M., and Todreas, N., 1979, ASME J. Fluids Eng., 101, pp. 429–434)

“…The analysis leading to equation (2) implies that on a symmetry line the wall shear stress can be calculated directly from the pressure gradient and the passage geometry. A more rigorous expression for equation (1) would be:…”

“…The interest in and clarification of this work reflected by the comments is appreciated. In response to Dr. Rowe's comment, we note that the static pressure results were measured at only one plane, L/D H = 182 which was assumed based on the results of references [1,2,8] to be at fully-developed conditions. The pressure variation at this plane is so slight that for axial flow analysis, the assumption of constant pressure along the 6 direction is a good assumption.…”

On closure of a turbulent flow model in ducts and stream channels in a way alternative to a calibrating method

“…(1) Friction stress calculation (Re = 1.9´10 5 )[2]; (2, 3) deterministic calculation of friction stress (2) and planned velocity diagram (3) (Re = 0.9´10 5 )[13];(4,5) experimental data at Re = 0.95´10 5[7].…”