Applicability of numerical prediction method of dynamic derivatives is studied with forced oscillation method and free oscillation method on the airframe/propulsion integrative vehicle with and without fairing. Effect of parameters on dynamic derivative prediction in forced oscillation method such as time step and oscillation frequency is analyzed in detail. It shows that forced oscillation method is well applied in dynamic derivative prediction of integrative vehicle with internal and external flow, while parameters select of time step, computational time and oscillation frequency are quite different from external-flow-only vehicle. Dynamic derivatives by free oscillation method are in agreement with results with forced oscillation method on external-flow-only vehicle. There is a difference about 50% on integrative vehicle with internal and external flow. Origin and mechanism of differences in two methods need to be deeply studied.

Next generation petawatt laser facility is expected to reach intensity up to the order of 10²³-10²⁴ W·cm^-2,which may generate electromagnetic fields so strong that nonlinear quantum electrodynamics (QED) processes play a crucial role in plasma dynamics.A large number of γ photons can be emitted through synchrotron radiation from ultrarelativistic electrons,and pair creation process can also be triggered when γ photons traverse electromagnetic fields.In turn,these QED physics can affect plasma dynamics itself significantly,in particular for electron motion under radiation reaction.In order to study such extreme plasma dynamics,we introduce a QED model developed in recent years,which can be coupled with traditional particle-in-cell (PIC) code,i.e.,so-called a QED-PIC code.Due to booming particle number caused by the newly emitted photons and created pairs,we also develop a particle merge algorithm to reduce the computational scale.Several applications of this contemporary QED-PIC code in modeling of ultraintense laser-plasma interaction and extreme astrophysical phenomena are presented.

To reduce high complexity in extraction of functional regularity in digital ICs,a template called CHAIN generation algorithm is proposed based on data mining.Weights of edges are encoded,and a complex subcircuit isomorphism problem is solved by comparing edge weight sequences of the subcircuit.To reduce complexity and accelerate the algorithm,a pruning strategy is introduced into expending of templates to delete non-frequent subcircuits gradually.By merging template generation process and subcircuit isomorphism searching process,the regularity extraction flow is simplified.Experiments show that this CHAIN template algorithm is more effective.It obtains better circuit covering result than SPOG and TREE methods.

The dynamic response of aluminium alloy and carbon phenolic composite plate impacted by an iron bullet has been studied by finite element method. Both the results of theoretical calculation and graphical analysis are given.

Some improving works have been done on the SCF-Xα-SW and LMTO Programs by vectorization and parallelization.The energy level of C₆₀ is researched.The 108 one electrom Rydberg excitation energies of benzene,such as 1e_1g,2e_2g,1a_2u→ka_1g(k=3-11),ke_2g(k=2-7),ke_1u(k=3-8),ke_1g(k=2-5),ke_2g(k=3-5),ke_2u(k=2-3),kb_2u(k=2-3),kb_1u(k=2-3),1b_1g,1b_2g are calculated.The electronic structure and bulk modulus of some U-Ni alloys are also analyzed.