similarity criterion
1.Obtains two kinds of quantity group based on the similitude principle, i.e. the dimensionless similarity criterion and the dimensional thermal stratification height.
2.The results show that the Mach number and Stokes number are decisive similarity criterion,and the modeling errors of the particle impacting velocity and angle on nozzle wall are less than 5% and 3°,respectively.
3.Then,the similarity degree of contin- ued wave-field values in offset direction is calculated in terms of coher- ent criterion,and used as similarity degree at(v_i,τ_i)point,which is call- ed alternate point.
4.In the paper, on the basis of expounding the importance of similarity theory in the numerical simulation of tectonic stress field, it is pointed out that, only by making the numerical model be similar to the geological prototype in material, combination pattern, boundary condition, loading mode and cracking criterion, etc. , may the simulation result be real.
