Self-assembly of asymmetric coil-rod-coil three block copolymers is simulated with self-consistent field theory in three dimensions. As volume proportions of coil and rod block equal each other, with change of volume fractions of aside coil, lamellar, gyroid, strip and cylindrical structures are observed. Interacion parameter at which phase separation occurs increases with volume fractions of aside coil. As volume fraction of aside coil equals 0.05, phase behaves especially rich. With increasing interacion parameter self-assembly structure change from lamellar into gyroid and then lamellar, which is different from coil-rod diblock copolymers. It is found that appearance of lamellar, gyroid, strip and cylindrical structures differs with corresponding coil-rod-coil symmetric tfiblock copolymers.

Molecular dynamics (MD) simulation is made to study growth of diamond-like carbon (DLC) films via ion-beam-assisted deposition (IBAD).C₂ molecules and H ions are selected as deposition projectiles and Ar ions are selected as assistance projectiles.At fixed incident energy and varied ration (Ar/C),assisted deposition of film is investigated.Transient mobility and migration of C atoms due to Ar impact is investigated.It shows that the impact-induced high recoil energy and displacement of deposited C atoms play a key role in growth of DLC films.It is attributed to incident energy and momentum of assistance Ar.The results agree well with experimental observation.It helps understanding of the growth mechanism.

Effective well radius combined mathematical models are suggested for non-Newtonian power-law fluids with the low-velocity non-Darcy flow in the fractal reservoir.The formation models consist of internal regions and external regions.Porous medium flow in the fractal network of the internal regions obeys the low-velocity non-Darcy law of the non-Newtonian power-law fluids while the one in the external region obeys the Darcy law of the non-Newtonian power-law fluids.The initial and the three outer boundary conditions of infinite,finite with constant pressure and closed boundary are given according to the polymer flooding in a fractal reservior.Solutions of the well test models in Laplace space are obtained.The relationship between the dimensionless pressure and time is studied by using the Stehfest numerical inversion.The dynamic feature of the pressure and parameter effect are disscussed.This method can be used to predict formation permeability,skin factor and reservoir pressure of non-Newtonian fluids such as the polymer fluid flow and locate the polymer flooding frontier.

The compressed shapes of the pellet driven by a radiation field in a cylindrical gold hohlraum under single ring driving of incident laser beams simulated by RT3D and Lared-Ⅰ codes are given. As the position of the incident laser spots changing, the temperature distribution on the pellet surface changes as well and the pellet shapes turned out to be cake-like, sausage-like or ball-like respectively according to the different position of the laser spots. The comparison of the simulation result with the experiment carried out in LLNL and with the simulation result by Lasnex codes is given here too and it is shown that the same conclusion and the similar numerical result was obtained. Meanwhile it can also be seen that under single ring driving, it is not enough to supply a uniform and symmetrical radiation fields and it would be necessary to develop two or three laser rings driving to improve the radiation field.

Lateral wells increasing, it becomes more and more important to evaluate the pressure performance and formation damage in the heterogeneous reservoirs with lateral drilling. Considering the properties of lateral drilling in the heterogeneous reservoirs, the paper has presented a mathematical model of 3D unsteady flow. Since it is intricate to solve the model by analytical method, the model is solved by boundary element method and regional division technique for the pressure performance of lateral drilling well produced at constant rate or bottom well pressure. By reasonable incorporation of pseudo skin factor, dimensionless damaged radius, dimensionless well storage coefficient, and permeability of damaged region; we can get type curves, which can be used for evaluation of formation damage caused by lateral drilling. The application to well test data of a lateral-drilling well of Liaohe oil field in the East China shows that the model and method are all valid.

The indirectly driven high convergence implosions is numerically simulated using 2D Lagrangian code named Lared Ⅰ.These implosions were characterized by a variety of measurements,and computer models are in good agreement with the measurements.

The processes of ignition and burning in the fusion system of D-³He mixed a small number of tritium have been studied using numerical simulation method. The simulation results show that mixing a small number of ritium into the D-³He system can solve the problem of ignition of D-³He, hence will accelerate its burning and increase its depletion.

The physical processes of radiative ablation and burn-through of Al foil are theoretically studied using the time-dependent radiation temperature curve inside the cylindrical hohlraum measured on Shenguang-Ⅰ facility.Some scaling laws and numerical simulation results are simultaneously presented.