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moving boundaries
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  运动边界
     This paper discusses the problem of moving boundaries in fractal growth and proves that the physical essence of moving boundaries is a physical system which contains a Varied dissipation source.
     本文讨论了分形生长中的运动边界问题,运动边界不仅给出因空间标度变换而产生的生长项系数的变化,而且使系统增加一个变化着的耗散源,这就是运动边界的物理本质。
短句来源
     NUMERICAL SIMULATION OF STOKES FLOW IN A 2-D CAVITY WITH MOVING BOUNDARIES
     二维空腔运动边界STOKES流动的数值模拟
短句来源
     The boundary element method is presented for numerical solving Stokes flow in a 2-D cavity with moving boundaries.
     利用边界元方法数值研究二维空腔运动边界Stokes流动的流场变化问题。
短句来源
     To aviod the airgap mesh distortion caused by the movement of the rotor ,moving boundaries are introduced in the airgap.
     为避免由于电机定、转子相对运动而引起的气隙场域剖分网格的畸变问题,在气隙中引入了运动边界
短句来源
     By introducing a small region in which the crack faces make frictionless contactand making use of a kind of integral equations with moving boundaries,it is proved that there are onlysquare-root singularities near the tips of interface crack in case of that dynamic loads act on it.
     引入尖端无摩擦接触的界面裂纹模型并采用具有运动边界的控制积分方程. 证明了在动态界面裂纹尖端仅存在平方根奇异的应力场.
短句来源
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  动边界
     Numerical Solutions of the Generalized Moore Equation and the Energy Density in a One-dimensional Cavity with Two Moving Boundaries
     一维双动边界谐振腔的广义Moore方程的数值解和能量密度
短句来源
     APPLICATION OF GMRES METHOD IN FLOW FIELDS INVOLVING MOVING BOUNDARIES
     GMRES方法在含动边界流场中的应用
短句来源
     The energy density in a one-dimensional cavity with two moving boundaries
     双动边界一维空腔中的能量密度
短句来源
     A NONLINEAR HYDRODYNAMIC MODELING WITH MOVING BOUNDARIES AND RELATED APPLICATIONS
     非线性动边界水动力模型及其应用
短句来源
     Extending the approach of solving the Moore equation for a onedimensional (1D) cavity with one moving boundary, we propose a method to solve numerically the generalized Moore (GM) equation for that with two moving boundaries.
     基于求解一维单动边界谐振腔的Moore方程的思想,提出了一维双动边界谐振腔的广义Moore方程的数值求解方法.
短句来源
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  移动边界
     Unitive Analysis Schemes Problems of Multiple Moving Boundaries with 3-D Liquid-Solid Multiple Nonlinear Coupling for Uplift of Anchored Liquid Storage Tanks
     无锚固储液罐提离的流-固多种非线性耦合的三维移动边界问题统一分析格式
短句来源
     An arbitrary Lagrangian-Eulerian (ALE) finite element method is developed to solve theNavier-Stokes equations with large free surface moving boundaries.
     采用有限元法数值求解了具有自由液面大幅移动边界的Navier-Stokes方程。
短句来源
     A control volume approach is applied here to trace the moving boundaries, one for melt front,the other for gas melt interface.
     在对移动边界的处理采用控制体积法对充模过程中的两类移动边界:熔体前沿、熔体—气体边界进行跟踪,从而实现气体辅助注射成型充模过程的数值模拟。
短句来源
     The ALE formulation is a generalized concept to deal with the problem of moving boundaries around a continuum. The fluid motion is described by the original variable Navier-Stokes (N-S) equations and Poisson equations in pressure.
     ALE方法用于求解移动边界问题,流体运动通过原始变量Navier-Stokes方程描述,压力采用Poisson方程形式。
短句来源
     The problem can be illustrated as a free boundary problem with two moving boundaries.
     该问题可描述为一个具有两条移动边界的自由边界问题。
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  “moving boundaries”译为未确定词的双语例句
     Application of HLLC Method in 2D Unstructure Meshes with Moving Boundaries
     HLLC方法在二维非结构动网格上的应用
短句来源
     SOME RECENT ADVANCES IN BEM SOLUTION OF TIME-DEPENDENT PROBLEMS WITH MOVING BOUNDARIES
     非定常不定边界问题边界无法的若干进展
短句来源
     Exact Wave Function of Particle in the Quantum Well with Moving Boundaries and Its Squeezing Effects
     量子井中粒子的严格波函数和它的压缩效应(英文)
短句来源
     By means of ALE, the computational region can be tracked with moving boundaries.
     ALE描述通过定义合理的网格移动方式跟踪计算区域边界的变化.
短句来源
     MATHEMATICAL MODELS FOR PROBLEMS WITH MOVING BOUNDARIES
     不定边界问题的边界元和有限元数学模型
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  moving boundaries
Calculation of incompressible viscous flows in vessels with moving boundaries
      
Grain growth was characterized by means of pairwise comparisons in EBSD pattern quality across moving boundaries.
      
In the absence of appreciable dislocation glide, the atomic displacements associated with moving boundaries constitute highly ordered and reversible modes of either plastic or nonlinear pseudo-elastic deformation.
      
For such networks we propose a CDMA transmission policy, in conjunction with a moving boundaries concept induced by a traffic monitoring high‐level protocol.
      
Complete asymptotic decomposition of the sojourn probability of a diffusion process in thin domains with moving boundaries
      
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This paper provides a mathematical physics model of gasdynamics for interiorballistics as well as a method for solving given quasiliner partial differentialequations with moving boundary by means of difference form. Its numericalsolution is obtained on the assumption of the velocity ratio K=1. In order toapproach the path of projectile base, a broken-line method is used and the resultabtained is acceptable. Finally, the comparison and analysis of the differencebetween the result of this paper and that...

This paper provides a mathematical physics model of gasdynamics for interiorballistics as well as a method for solving given quasiliner partial differentialequations with moving boundary by means of difference form. Its numericalsolution is obtained on the assumption of the velocity ratio K=1. In order toapproach the path of projectile base, a broken-line method is used and the resultabtained is acceptable. Finally, the comparison and analysis of the differencebetween the result of this paper and that of the conventional method are also given.

本文根据内弹道气动力数学物理模型,提出用差分格式求解拟线性偏微分方程组动边界问题的方法。获得当速度比 K=1条件下的数值解。对动边界的处理,本文采用折线逼近弹底运动轨迹的方法,在边界值计算上得到较好的结果。最后,将计算的结果与常规方法进行对比,分析这两种方法的差异。

It is necessary to measure the continous variation of thermal conductivity of coatings due to structural changes during ablation, so tests had been carried out under the conditions imitate to practical operation by specimens similar to actual components. The thermal diffusivity a and thermal conductivity k have been calculated in this paper from the temperature increasing curves of the inner and outer surfaces of specimen and the size changing in ablating experiment by arc plasma. It is suggested in this paper...

It is necessary to measure the continous variation of thermal conductivity of coatings due to structural changes during ablation, so tests had been carried out under the conditions imitate to practical operation by specimens similar to actual components. The thermal diffusivity a and thermal conductivity k have been calculated in this paper from the temperature increasing curves of the inner and outer surfaces of specimen and the size changing in ablating experiment by arc plasma. It is suggested in this paper that the moving boundary of constant temperature model can be substituted by the fixed boundary of varying temperature model to treat the case with ablation; in the case without ablation, the unknown quantities qc (the heat flow) and k can be cancelled at first by calculating the ratio of temperature increases of the inner and outer surfaces of specimen, and then k and qc can be calculated as the value of a is obtained.

测定涂层热导率在烧蚀过程中因结构改变而不断产生的变化是必要的,因此采用类似实际部件的试样在接近使用情况的环境中进行了试验.本文根据试样在电弧等离子体烧蚀实验中内外表面的升温曲线和尺寸变化计算了材料的热扩散率α和热导率k.本文提出可以用变温不动边界的模型代替恒温移动边界的模型来处理有烧蚀的情况;当试样无烧蚀时,可以先通过计算内外表面的温升比消去未知量q_c(热流)和k,在求得α值后再计算k和q_c.

In this paper both the coupling effects between external electric circuit and an A. C. arc column and the effect of moving boundary on the dynamic property of an A. C. arc are studied under assumption that the length of the arc column is much longer than its radius, and that energy transfer by radiation and convection is negligible. Electric circuit and energy equations for the arc column and the annular spa-ce between the arc column and wall of the discharge tube, are given and solved numerically. Curves...

In this paper both the coupling effects between external electric circuit and an A. C. arc column and the effect of moving boundary on the dynamic property of an A. C. arc are studied under assumption that the length of the arc column is much longer than its radius, and that energy transfer by radiation and convection is negligible. Electric circuit and energy equations for the arc column and the annular spa-ce between the arc column and wall of the discharge tube, are given and solved numerically. Curves of waveforms for the arc current, voltage, heat flux potential and the arc boundary axe given. Computed results show that when the circular frequency ω of an A. C. arc is low or time constant θ is small, shch that ωθ<5, the coupling effects and the oscillation of the A. C. arc boundary appear to be important. The waveform of the arc voltage exhibits a rather high re-ignition peak immendiately following the zero current passage. The arc current is no longer the usual cosine waveform, without coupling effects between the external circuit and arc column. It deviates from cosine waveform after current passes zero. The difference depends on the external circuit resistance and the value of the dimensionless parameter ωθ. It should be pointed out that second voltage peak-extinction peak voltage are given forωθ≤1 and agrees well with experiment result.

本文研究了交流电弧的弧柱与外迴路之间的耦合作用,以及电弧边界随时间的波动对电弧特性的影响,用数值方法给出了电弧的特性曲线。结果表明,当ωθ≤5时外迴路与弧柱间的耦合作用显著。弧电流在过零点后发生畸变,畸变大小与外迴路阻抗及ωθ值有关。电弧边界和热流势随时间波动较大,相对波动量可达50%以上。当ωθ≤1时,本文从理论上证实存在熄弧峰值电压,与实验结果一致。

 
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