Molecular dynamics simulation with embedded atom method is used to study energetic deposition on Pt(111)surface with Ni atoms at incident angles(θ)in a range of 0°to 80°(normal to the surface).Dependence of sputtering yields.adatom yields and vacancy yields on θ can be divided into throe different regions,θ≤20°,20°< θ < 60°,and θ≥60°respectively.As θ is smaller than 20°energetic deposition is similar to that at θ=0°.While 20° < θ < 60°,depth of projectile implantation decreases with incident angle.Distribution of adatoms is uniform,which contribute to uniformity of nucleation and layer-by.1ayer growth of film.As θ≥60°. energetic deposition has no obvious effect ou surface of Pt(111)substrate.

The viscous resolution of different CFD schemes for vortical flows over delta wings has been investigated both numerically and theoretically, which include Jameson's center scheme, Roe's FDS scheme, Van Leer's FVS scheme and upwind TVD scheme. It has been concluded that Jameson's center scheme and Roe's FDS scheme have the best viscous resolutions, while Van Leer's FVS scheme and upwind TVD scheme are not suitable for vortical flow simulations.

Through comparing different results of simulating shock reflection flow over a forward step using different schemes including Roe and van Leer schemes,the advanced upwind scheme (AUSM+) is fully studied in terms of its resolution and efficiency for shock waves,expansion vaves,contact discontinuities and their interactions.Its advantages of low numerical dissipation and high resolution for discontinuities are demonstrated.