Fig. 7
From: Highly rarefied gas flows in rough channels of finite length
The effective accommodation coefficient, when the unit channel size is \(H \times H\). In each group of line styles, from top to bottom, the bump height is \(h = 0.1H\), 0.2H, 0.3H, and 0.4H, respectively. The solid lines, from top to bottom, show the AGP of the smooth channel with heights of 0.766H, 0.578H, 0.400H, and 0.218H, respectively. The bump width is fixed at \(w=0.2H\)