In order to test the accuracy of particle image velocimetry in wind tunnel and its application potential in blowing sand boundary layer research,seeding particles were selected as tracer and the wind velocity profile was re-measured,the distribution law of sand particle velocity and concentration was also obtained.

Dynamic analysis on changes of desertification in desert-loess boundary belt during the last 10 years——A case study on Yulin area in North Shaanxi Province;

Solution to two-dimensional wind sand fluid boundary layer equation of high speed car;

We deduce the Variational coeffcient elastic model from theory of elasticity,and calculate the stress distributions in a sandpile in two dimensions using this model.