Different Domain Decompositions at Different times for Capturing Moving Local Phenomena
نویسنده
چکیده
A conservative Galerkin domain decomposition method for time-dependent problems is given and analyzed. This method allows one to apply diierent domain decompositions at diierent time levels when necessary, in order to capture time-changing local phenomena, such as, propagating fronts or moving layers. Error estimates in the energy and L 2 norms are established. Numerical results are presented.
منابع مشابه
Three dimensional static and dynamic analysis of thick plates by the meshless local Petrov-Galerkin (MLPG) method under different loading conditions
In this paper, three dimensional (3D) static and dynamic analysis of thick plates based on the Meshless Local Petrov-Galerkin (MLPG) is presented. Using the kinematics of a three-dimensional continuum, the local weak form of the equilibrium equations is derived. A weak formulation for the set of governing equations is transformed into local integral equations on local sub-domains by using a uni...
متن کاملNonlinear vibration analysis of axially moving strings in thermal environment
In this study, nonlinear vibration of axially moving strings in thermal environment is investigated. The vibration haracteristics of the system such as natural frequencies, time domain response and stability states are studied at different temperatures. The velocity of the axial movement is assumed to be constant with minor harmonic variations. It is presumed that the system and the environment...
متن کاملDesigning of P controller to obtain desired time domain scenario of the output
One of the most applicable and simple controllers, which always attracts the researcherchr('39')s attention to obtain a proper closed-loop performance, is the P controller. Proper performance of a system defined in the presence of controller has been proposed with different expressions like rising time, settling time and maximum overshoot. But in the view of this paper, the proper performance o...
متن کاملA Robust Image Denoising Technique in the Contourlet Transform Domain
The contourlet transform has the benefit of efficiently capturing the oriented geometrical structures of images. In this paper, by incorporating the ideas of Stein’s Unbiased Risk Estimator (SURE) approach in Nonsubsampled Contourlet Transform (NSCT) domain, a new image denoising technique is devised. We utilize the characteristics of NSCT coefficients in high and low subbands and apply SURE sh...
متن کاملCoupling Nonlinear Element Free Galerkin and Linear Galerkin Finite Volume Solver for 2D Modeling of Local Plasticity in Structural Material
This paper introduces a computational strategy to collaboratively develop the Galerkin Finite Volume Method (GFVM) as one of the most straightforward and efficient explicit numerical methods to solve structural problems encountering material nonlinearity in a small limited area, while the remainder of the domain represents a linear elastic behavior. In this regard, the Element Free Galerkin met...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 1995