LS-Dyna时间步长控制关键字*CONTROL_TIMESTEP各选项含义 在LS-Dyna中关键字*CONTROL_TIMESTEP用于控制求解的时间步长,时间步长为每一步有限元积分的长度。计算所需时间步长时,要检查所有的单元。出于稳定性原因,用0.9(默认)来确定最小时间步:Δt = 0.9 l/c,特征长度l,和波的传播速度c,都与单元的类型有关。 ...
CONTROL_TIMESTEP, CONTROL_TIMESTEP is in the kwd.json now and should be generated. Removed it from the SKIPPED_KEYWORDS list. Removed it from manifest. Added test for CONTROL_TIMESTEP and edited test for CONTROL_TIME_STEP. CONTROL_TIMESTEP, CONTROL_TIMESTEP is in the kwd.json now and sho...
25outputControltimeStepoutputInterval每5个timeStep输出一次forceCoeffs输出阻力系数typeforceCoeffsfunctionObjectLibslibforcessopatchesSUBOFFrhoNamerhoInfrhoInf1000logtrueCofR0455速度lRef356特征长度Aref982497湿表面积outputControltimeStepoutputInterval在pisoFoam求解中设置监测点Myprobe7Nodes监测点typeprobes函数对象类型fu...
The process of dynamic time-step selection for fixed spatial resolution based on the idea of balancing different local truncation errors will be presented. Some theoretical justification and numerical results will also be given. The application of iterative improvement to ADI methods will also be ...
This dialog is used to define the criteria under whichDry Weather Flow (DWF) Modeapplies. It is displayed when the Timestep Control button is clicked on theSchedule Hydraulic Run View. The simulation engine can operate in one of two modes: storm mode or DWF mode. ...
Adaptive control for time step selection in finite element simulation of coupled viscous flow and heat transfer - Valli, Coutinho, et al. - 1999Adaptive control for time step selection in finite element simulation of coupled viscous flow and heat transfer - Valli, Coutinho, et...
CiteSeerX - Document Details (Isaac Councill, Lee Giles): In this paper we continue our work on adaptive timestep control for weakly instationary problems [29]. The core of the method is a space-time splitting of adjoint error representations for target functionals due to Süli [31] and Ha...
In the present contribution, we extend the timestep control developed before for scalar conservation laws to the system of the instationary Euler equations of gas dynamics in two space dimensions. A key diculty is to formulate boundary conditions for the gradient w = rv instead of v. Generally...
We report on recent work on adaptive timestep control for weakly instationary gas flows [16, 17, 18] carried out within SFB 401, TPA3. The method which we implement and extend is a space-time splitting of adjoint error representations for target functionals due to S眉li [19] and ...
Control strategies for timestep selection in finite element simulation of incompressible flows and coupled reaction- convection-diffusion processes. International Journal for Numerical Methods in Fluids, 47(3):201-231, 2005.A M P Valli GFC, Coutinho ALGA. Control strategies for timestep selection in...