A train with cross sectional area St is moving with speed vt

Last updated: 6/10/2023

A train with cross sectional area St is moving with speed vt inside a long Vt tunnel of cross sectional area So So 4St Assume that almost all the air density rho in front of the train flows back between its sides and the walls of the tunnel Also the air flow with respect to the train is steady and laminar Take the ambient pressure and that inside the train to be po If the pressure in the region between the sides of the train and the tunnel walls is p then po p Share Answer Apply continuity equation at R and S 4st X Vt V x 3St V Vt P V i V Apply Bernoulli equation at R and S V 2 7 2N 2 Po P pvz The value of Nis Vt2 2 2 Po P V V ii Open in answr app