Puymorens tunnel tests - airflow, pressure and drag predictions (IM-AERO-135)

In 1979, S.N.C.F. carried out a series of tests in the Puymorens Tunnel in order to verify S.N.C.F. procedures for analysing train drag. The tunnel is 5.2 km long, single track and situated in Southern France, and a Corail train, a container train and a freight train were used in...