欢迎您！东篱公司
退出
-
申报数据库
-
立项数据库
-
成果数据库
-
项目获奖数据库
中文摘要：
利用近年来发展的对数构型方法,通过有限增量过程引入稳定化机制,提出对数构型压力稳定分步算法,显著降低每个迭代步的计算量,避免对构型张量梯度的差分近似.引入压力稳定化机制,不仅避开了LBB条件的限制、允许待求变量采用等低阶插值,且显著地增强了算法稳定性.黏弹性流体圆柱绕流问题的数值模拟表明,对数构型压力稳定分步算法具有优良的稳定性和精度.
英文摘要：
Based on log-conformation method developed recently,a log-conformation-based fractional step algorithm with stabilization mechanism is proposed by virtue of the finite increment calculus（FIC） process.The algorithm remarkably reduces computational cost within each iteration step compared with existed coupled solution schemes.Meanwhile it bypasses finite difference approximation for gradient of conformation tensor.As FIC process is introduced as pressure stabilization mechanism,restrictions on u-p interpolations imposed by LBB compatibility conditions are circumvented and equal-lower-order interpolations for u-p are allowed to apply.Numerical simulations for cylinder flow show excellent stabilization and accuracy of the proposed algorithm.
同期刊论文项目
同项目期刊论文
THREE-DIMENSIONAL PRESSURE-DEPENDENT ELASTOPLASTIC COSSERAT CONTINUUM MODEL AND FINITE ELEMENT SIMUL
A mixed finite element and mesh-free method using linear complementarity theory for gradient plastic
Micromechanically informed constitutive model and anisotropic damage characterization of Cosserat co
Coupled thermo-hydro-mechanical model with consideration of thermal-osmosis based on modified mixtur
A coupled chemo-elastoplastic-damage constitutive model for plain concrete subjected to high tempera
Adaptive coupled arbitrary Lagrangian-Eulerian finite element and meshfree method for injection mold
Mixed finite element method for generalized convection-diffusion equations based on implicit charact
An ALE based iterative CBS algorithm for non-isothermal non-Newtonian flow with adaptive coupled fin
A generalized Hill’s lemma and micromechanically based macroscopic constitutive model for heterogene
A micro-macro homogenization approach for discrete particle assembly - Cosserat continuum modeling o
Numerical simulation of three dimensional non-Newtonian free surface flows in injection molding usin
Optimization of injection molding process parameters using integrated artificial neural network mode
Meshfree iterative stabilized Taylor-Galerkin and characteristic-based split (CBS) algorithms for in
期刊信息
位置：