Numerical simulations of natural convection from vertical plate;

When the boundary layer theory is used to study the film condensation on the vertical plate, the error was found much bigger in the case of middle or small figures of Re or on the front of the condensation field.

The following paper analyzes the cracking mechanism of vertical shaft wall in alluvium, discusses its influenced factors as shaft wall, surface displacement layer, soil strata surrounded shaft and temperature, and proposes the route of preventive technique, which has a certain guiding significance for the settlement of wall cracking of vertical shaft in alluvium.