Mass transfer from cylinders at various orientations to flowing gas streams

The effects of angle of cylinder orientation and cylinder length on mass transfer rates were studied for Reynolds numbers ranging from 6,000 to 18,000. Orientations (?) varied from 0° to 90° for cylinders whose L/D's ranged from 5.26 to 21.04. The relation j_m = m(N Re)ⁿ fit the data for a given orientation and L/D. Both j_m and N_Nu, data compared favorably to literature values for transverse and parallel flow. Sherwood numbers were shown to be [1] a function of (N Re × sin ?) [2] to correlate with Consin's “cosine law” and [3] to be a function of L and ?. Peak mass transfer occurred between 45° and 75°.