弥散效应 meaning in Chinese
dispersion effect
Examples
- The calculation of the position of the shocks for the domain decomposition of the hyperbolic approximation is discussed . it is the matching stable problem for the different schemes in the different domains with different mesh size . after tracing the position of the shocks , the artificial compression method are applied to eliminate the smearing effect and to raise the resolution of the schemes . in the boundaries of each regions , the universal connected matching stable schemes are inserted in so as to make the schemes between different regions matching stable each other . at last , some numerical examples are presented
讨论在激波计算中的区域分解法，即在不同区域中应用不同网格及格式的耦合稳定性问题.先定出激波位置，再在激波附近小范围内，用低阶格式及人工压缩方法以消除弥散效应.在激波区域外，应用高精度格式，减少了过超振荡现象，提高了分辨率.在各区域交界应用全能稳定联接格式，解决了格式的耦合稳定问题.最后举出数值计算实例，计算结果与理论分析符合 - In order to proof the program ' s effectiveness , we made some experiments on ly - 12a1 by shpb . in addition , based on the pochhammer - chree ' s theoretical solution about the stress wave propagation in infinite cylindrical bar , a numerical approach for analyzing dispersion in shpb experiments is developed
由于应力波在杆中传播时存在弥散效应，在hopkinson杆实验中，采用杆中某处的应变来代替杆与试件接触端面处的应变，这必然会因为应力波的弥散效应给实验结果带来偏差。 - Furthermore using the variation principle in the elasticity , the wave - motion equation is derived in the finite deformation elastic thin rod with viscous and transverse inertia effects , and the characteristic curves and their characteristic relations are obtained by characteristic line method , and the influence of viscous and geometrical - dispersive effects on the propagation of wave is analyzed
再利用弹性力学中的变分原理，导出了同时计及粘性和横向惯性效应时的弹性细杆的几何非线性波的波动方程，用特征线法得到它的特征线和特征线上的相容关系，分析了粘性耗散和几何弥散效应对波的传播速度的影响。