Abstract
The Poiseuille flow and thermal creep flow of a rarefied gas through,a grooved, duct are investigated on the basis of the B-G-K equation for all range of the Knudsen number. The discrete ordinate method is used for numerical calculation. The flow velocity distribution as well as the flow rate per unit area is obtained. The flow rate of the Poiseuille flow suffers a remakable effect by the groove when Knudsen number is small.
