A method of adaptive mesh is proposed and simulation of strong explosion radiation hydrodynamics based on Euler method is carried out. To demonstrate feasibility of the approach, comparisons with Zinn's numerical results are made. It shows that profiles of over-pressure and visible output power with adaptive mesh is close to those with uniform mesh with three times grid number. Meanwhile, the time consumed decrease to 1/8.5. It shows that the adaptive mesh method is feasible in high-precision numerical simulation and accuracy and efficiency are increased prominently.

Cryosorption of oxygen produced in chemical oxygen iodine laser(COIL) is considered. From the view point of mass conservation, a linear relation between gas pressure gradient and gas velocity is used with which gases flows through a zeolite porous bed is obtained. An adsorption balance equation, describing relation of components in gas flow and adsorped components,is established with adsorption dynamics equation. Henry relation is employed as isothermal equation. A set of cryosorption model equations is solved numerically. Oxygen concentration evolution,and long time character of concentrations are given.

To investigate mechanism in TUDOG(Transeverse Uniform Droplet Oxygen Generator),a one-dimensional chemical reactive flow model is established to describe physical and chemical performance as mixed Cl₂/He gases passing through BHP(KOH,H₂O₂,H₂O)droplet field transeversely.Gas-phase flowfield is approximately considered as 1-D homogeneous flow according to incompressibility hypothesis.Chemical reaction in liquid droplet is described by reactive-diffusion equations with 4 gasous components.Concentration of gasous components are described with convective-diffusive equations. Droplets are gasous source or sink. It is shown that chlorine utility,singlet oxygen yield and generator efficiency are close to experiment results.The model is verified in simulating interactions between mixing gases and BHP droplets.

The supersonic CW COIL theoretical model is given. A typical experimental equipment has been preliminarily numerically simulated by using this model. Main calculated results are given and compared with the experimental ones or those in other papers.