Feedback effect of base roughness on particle size segregation in bidisperse granular avalanche

Fiona Kwok1,2 and Lu Jing1,3, (1)Sichuan University, State Key Laboratory of Hydraulics and Mountain River Engineering, College of Water Resource and Hydropower, Chengdu, China, (2)The University of Hong Kong, Civil Engineering, Hong Kong, Hong Kong, (3)Tsinghua University, Tsinghua Shenzhen International Graduate School, Beijing, China