弹塑性流体力学拉氏自适应网格和网格重分守恒重映数值模拟方法

拉氏自适应重分弹塑性流体力学有限元程序实现了网格完全自适应，具有良好、灵活的非结构自适应网格数据结构，实现了滑移界面两边(接触间断)网格动态调整，网格的细分和合并处理灵活，网格重分和网格自适应模块兼容、守恒重映，网格重分中采用多种方法控制新网格的质量，爆轰计算可采用Lee-Tarver的化学反应率模式。初步数值计算结果表明，弹塑性流体力学拉氏自适应重分数值模拟方法合理，计算结果正确，基本反映了流场的物理结构。     

强光光学元件波前检测算法

针对强光光学元件高精度检测中使用的两个新参数一——波前位相梯度和功率谱密度的数值计算方法进行了研究，并对目前使用的大口径干涉仪传递函数进行了实验标定。     

Measurements of Boundary Plasma in Synergy Discharges of IBW and LHCD on the HT-7 Tokamak

By applying ion Bernstein wave (IBW) heating into the lower hybrid current drive (LHCD) plasma, improved confinements have been obtained in the HT-7 tokamak. The central electron temperature was doubled and the storage energy was increased significantly. The core electron density and temperature were broadened and ther profiles near the edge were steepened. A transport barrier has been formed in the vicinity of the limlter radial location. An enhanced shear in poloidal phase velocity was found in the same region with reduction of the fluctuation levels and the coherences between fluctuations. The results suggest that the improved confinement in the IBW and LHCD plasma is at least partially due to the modification of shear in poloidal velocity and then the suppression of fluctuations and fluctuation induced fluxes via de-correlation effect.     

强爆轰参数的理论估算

用两相的排平物态方程对硝基甲烷的强爆轰参数进行了理论估算 ,理论值与拟稳态强爆轰的实验值(爆速、爆压和爆温 )符合得很好 .这既检验了这种理论估算方法 ,也再次检验了爆轰的ZND理论和两相的排平物态方程 ,也是对实验方法的一种支持 .常k形物态方程的强爆轰参数理论估算方法也得到了有条件的肯定     

Experimental and Theoretical Evidence for the Existence of Broad Forbidden Gaps in the Three—Component Composite

The influence of localized resonance on the properties of band-gaps of the two-dimensional periodic composite are analysed numerically and experimentally by comparing the two-component phononic crystal with the three-component one. The three-component composite which exhibits localized resonance in the elastically soft coating ring is composed of a square array of coated cylinders embedded in an epoxy resin. The coated cylinders consist of a steel inner core and a rubber coating, which has much smaller wave velocity and mass density than the matrixand tile inner material. Tile measured transmission power of tile three-component composite drops to the noise level in a broad ultrasonic frequency interval in contrast to the binary composite, which is in good agreement with the calculation using the finite element method.     

Energy-Momentum Pseudo-Tensor of Relic Gravitational Wave of Both the Polarized States

Unlike usual celestial gravitational waves, the relic gravitational waves （RGWs） form random signals in curved spacetime background. We calculate the energy-momentum pseudo-tensor of a certain component of the RGWs propagating along arbitrary directions in Cartesian coordinates. It is found that the energy density of RGWs is positive definitely, and the momentum density components have reasonable behaviour. Such results may provide a theoretical basis for the detection of RGWs.     

双曲函数型辅助方程构造具5次强非线性项的波方程的新精确孤波解

在辅助方程法的基础上利用两种函数变换和一种双曲函数型辅助方程，通过符号计算系统Mathematica构造了在力学当中一个重要的模型，有5次强非线性项的波方程的新三角函数型和双曲函数型精确孤波解.这种方法寻找其他具5次强非线性项的非线性发展方程的新精确解方面具有普遍意义. 关键词： 双曲函数型辅助方程 函数变换 具5次强非线性项的波方程 精确孤波解     

闪光Ⅰ号应用于X射线爆轰照相——研究金属射流的穿甲效应

闪光X射线照相技术是研究动载荷及其效应的重要测试手段,特别适用于研究物质在爆炸作用下的瞬变过程,本文介绍了闪光Ⅰ号加速器应用于X射线爆轰照相的基本状况,以及用于观察金属射流穿过高密度物质钨靶的实验技术。     

变参数波振器中小信号增益公式

利用微扰展开技术推导出变参数波振器的小信号增益两个近似求积表达式并将其计算结果与数值模拟结果进行了比较,二者吻合很好。利用近似解析式对小信号增益进行了初步探讨,得到了电子入射能量可低于初始谐振能,能散度允许范围受波振器设计影响以及降低锥度改变率可提高小信号增益等新结论。     

锑(Ⅲ)-2-(3,5-二溴-2-吡啶偶氮)-5-二乙胺基酚-溴代十六烷基三甲胺的络合物吸附波

在pH5.3的HAc－NaAc、2－（3，5－二溴－2－吡啶偶氮）－5－二乙氨基酚（3，5－Br2－PADAP）、溴代十六烷基三甲铵（CTMAB）溶液中，用线性扫描示波极谱法可得到锑（Ⅲ）的络合物吸附波。峰电位为－0.70V（vs．SCE）。二阶导数档峰高与Sb（Ⅲ）浓度在3．3X10-8～2．5X10－6mol／L范围内呈线性关系。检出限为8．2X10-9mol／L。用多种电化学方法研究了极谱波的性质及电极反应机理。络合物组成为Sb（Ⅲ）：3，5－Br2－PADAP＝1∶2。加入CTMAB可消除试剂峰且提高灵敏度。试验了30多种离子对峰电流的影响，用流基棉分离干扰离子。方法已用于矿样中锑的测定。