对空间域采用样条元计算,对时间域采用状态空间精细法。
The spline element analysis is applied in space domain and the state space precision method is used in time domain.
与传统的有限单元法和常用的时间积分法相比,时空有限元在精度和稳定性方面具有一定的优越性。
Compare to the conventional finite element method and common-used time integration methods, the space-time finite element method has some advantages in precision and stability.
在有限元分析模型中引入了牛顿迭代法,以使每一时间步长的末端温度满足某一限制条件而平衡收敛。
Newton Raphson method was introduced into the FEM analysis model in order to ensure that the solution of each iterative step would converge by means of satisfying some restrictive condition.
所得的非饱和土壤水运动方程对时间的差分方程,在空间上不仅可用有限元法而且可用有限差分法处理。
The time difference equation derived from unsaturated flow equation can be approximated by Galerkin finite element or finite difference method for space coordinate derivatives.
对空间域采用混合样条元法,对时间域采用现代控制论中的状态空间法。
The spline finite element procedure is used in space domain and the state space technique in time domain respectively.
研究结果表明,从模拟连续模型的精度上看,时域离散化使集中质最有限元法优于一致质量法,前者可取较大时间步长。
This paper shows that the time discretization makes the lumped-mass method much better than the consistent-mass one as accuracy is concerned for simulating wave motion in the continuous model.
介绍了用有限体积时间推进法进行以蒸汽为介质的蒸汽透平叶片排全三元粘性流场的计算方法。
This paper gives a brief description of the method for calculating three dimensional viscous flow field of a steam turbine blade row with the use of a finite volume time marching method.
最后利用微元法得到了射流流量随时间变化的函数关系式,并和数值模拟值进行了对比,分析了各设计参数的影响。
For the end, an equation of mass flux of jet about time deduced by the differential element method was compared to CFD results, and the influence of design parameters was analyzed.
计算结果表明:线性边界元法具有计算精度高,所需节点少,占内存小,计算时间短的优点。
It has been shown that LBEM has the advantage of higher accuracy, fewer nodes, smaller memory and shorter time.
对空间域采用有限元计算,对时间域采用状态空间精细法。
The finite element analysis is applied in space region and the state space precision method is used in time region.
利用RP-HPLC法,采用保留时间定性,结合化学方法,证实罗汉果中含有黄酮甙元山奈酚,并首次发现含有黄酮甙元槲皮素,第一次总结出罗汉果鲜果中总黄酮含量的变化规律。
A kind of flavonol named quercetin was first found and by their retention times in RP-HPLC and chemical characters a known flavonol named kaempferol was proved to be contained in Luohanguo fruits.
在使用有限元法求解波动方程偏移过程中,由于未知量数目巨大,需要花费大量的计算机存储空间和计算时间。
In wave equation migration using finite element method, a great deal of computer's internal storage and computer time are used because of too many unknowns involved.
针对轴流式水轮发电机组在运行不长时间后,叶片出现大量有规律分布裂纹的缺陷,用有限元法对叶片进行了强度和振动计算;
This paper deals with a lot of crack failures in blades of axial_flow hydraulic turbine in operating, and calculated their strength and vibration characteristic by the finite element method.
通过有限元法分析可减少试模次数,从而降低消耗,缩短模具设计时间。
With FEM simulation, the cost and tooling design time can be reduced significantly by minimizing the number of try outs.
对空间域,采用样条有限元法;对时间域,采用现代控制论中的状态空间法。
The spline finite element is used for space domain and the state space method is used for time domain respectively.
采用线松弛法和人工时间相关法求解有限元方程。
SLOR and pseudo-time iterative method are employed for solving finite element equation.
与常规有限元法比较,所提方法能够减少划分单元的总数和CPU运行时间。
Compared with the conventional finite element method, the proposed method can reduce the total number of elements and CPU running time.
根据桨叶气弹响应的周期性,利用时间有限元法并通过旋翼配平求解桨叶的非线性气弹响应。
The blade response is calculated from nonlinear periodic equations using a finite element in time scheme. For induced inflow...
在计算过程中,通过有限元法得到工件内部相应位置在相应时间段所产生相变潜热,并将各单元的相变潜热与单元温度场进行耦合计算。
The method can evaluate the temperature-dependent heat transfer coefficient with the coupling calculation of temperature and latent heat according to the temperature curve …
在计算过程中,通过有限元法得到工件内部相应位置在相应时间段所产生相变潜热,并将各单元的相变潜热与单元温度场进行耦合计算。
The method can evaluate the temperature-dependent heat transfer coefficient with the coupling calculation of temperature and latent heat according to the temperature curve …
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