With the fundamental equations of elastic thin shell and fluid mechanics, the deformation and pressure of a porous circular cylinder in a transversal cross-flow were studied using the united Lagrangian-Eulerian method. It was assumed that the permeation of fluid was only in the normal direction of the cylinder surface and all the parameters were continuous along the surface of cylinder shell. The expression of velocity potential of flow was given based on the boundary conditions. The normal force and tangen...