Flow characteristics of 2-phase granular mass flows from model flume tests

Although the test on a slope of 35° had the largest potential energy before the release of the materials and the test on a slope of 25° had the least, the test with the 35-degree slope produced the largest equivalent coefficient of friction and the smallest value was obtained from the test with a 25-degree slope. This finding suggests that the dissipation of kinetic energy, especially in the vertical direction, due to the collisions and the following abrupt deformation around the connection of the flume between the slope and horizontal segments may play an important role in the travel distance.