Fig. 4
From: Highly rarefied gas flows in rough channels of finite length
Horizontal velocity profiles for different values of bump height, when the bump width is \(w=0.05H\). (Left) at inlet: \(x_1=0\). (Right) at the middle of channel: \(x_1=0.5H\). Symbols: \(\alpha =0.01\). Lines: \(\alpha =1\). In each figure, in each group of line styles, from top to bottom, the bump height is \(h=0.1 H\), 0.2H, 0.3H, and 0.4H, respectively