نتایج جستجو برای: crank nicolson method

تعداد نتایج: 1631428  

ژورنال: :مهندسی عمران مدرس 2015
مریم پام غلامرضا اسدالله فردی احمد خدادادی

چکیده- اصلاح الکتروکینتیک یک تکنولوژی نوید بخش است که می­توان از آن برای پاکسازی خاک های ریزدانه در محل استفاده کرد. در این مطالعه حل عددی فرآیند الکتروکینتیک در خاک آلوده به جیوه مورد توجه قرار گرفته است. مدل عددی برای شبیه سازی انتقال جیوه تحت یک میدان الکتریکی با استفاده از معادله یک بعدی انتقال- انتشار توصیف کننده انتقال آلاینده فرمول بندی شده است. مدل ارائه شده برای نشان دادن تغییر ph و حذ...

Journal: :SIAM J. Numerical Analysis 2000
Ning Ju

The long time numerical approximation of the parabolic p-Laplacian problem with a time-independent forcing term and sufficiently smooth initial data is studied. Convergence and stability results which are uniform for t ∈ [0,∞) are established in the L2, W 1,p norms for the backward Euler and the Crank–Nicholson schemes with the finite element method (FEM). This result extends the existing unifo...

2010
Kelong Zheng Jinsong Hu

In this paper, numerical solution for the generalized Rosenau-Burgers equation is considered and Crank-Nicolson finite difference scheme is proposed. Existence of the solutions for the difference scheme has been shown. Stability, convergence and priori error estimate of the scheme are proved. Numerical results demonstrate that the scheme is efficient and reliable. Keywords—Generalized Rosenau-B...

Journal: :Applied Mathematics and Computation 2012
Stavroula G. Giatili Georgios S. Stamatakos

The study of the diffusive behavior of glioma tumor growth is an active field of biomedical research with considerable therapeutic implications. An important aspect of the corresponding computational problem is the mathematical handling of boundary conditions. This paper aims at providing an explicit and thorough numerical formulation of the adiabatic Neumann boundary conditions imposed by the ...

2012
Bhaskar Reddy B. Vasu V. Ramachandra Prasad C. Sudhakar N. Bhaskar Reddy Ramachandra Prasad

The effect of thermophoresis particle deposition on unsteady free convective, heat and mass transfer in a viscoelastic fluid along a semiinfinite vertical plate is investigated. The Walters-B liquid model is employed to simulate medical creams and other rheological liquids encountered in biotechnology and chemical engineering. The dimensionless unsteady, coupled and non-linear partial different...

2014
N. Pandya A. K. Shukla

We study Soret-Dufour and radiation effects on unsteady viscous incompressible MHD flow along semi infinite inclined permeable moving plate with variable temperature and mass diffusion embedded in a porous medium numerically, by taking into account the effect of viscous dissipation. The dimensionless governing equations of flow field are solved numerically by Crank-Nicolson finite difference me...

2010
MILOS ZLÁMAL

The initial-boundary value problem for a linear parabolic equation with the Dirichlet boundary condition is solved approximately by applying the finite element discretization in the space dimension and three types of finite-difference discretizations in time: the backward, the Crank-Nicolson and the Calahan discretization. New error bounds are derived.

Journal: :J. Sci. Comput. 2018
Samuel Dubuis Marco Picasso

The time dependent transport equation is solved with stabilized continuous, piecewise linear finite elements and the Crank-Nicolson scheme [1]. Finite elements with large aspect ratio are advocated in order to account for boundary layers. The error due to space discretization has already been studied in [2]. Here, the error due to the use of the Crank-Nicolson scheme is taken into account. Anis...

2011
B. Kleefeld A. Q. M. Khaliq

A novel Exponential Time Differencing (ETD) Crank-Nicolson method is developed which is stable, second order convergent, and highly efficient. We prove stability and convergence for semilinear parabolic problems with smooth data. In the nonsmooth data case we employ a positivity-preserving initial damping scheme to recover the full rate of convergence. Numerical experiments are presented for a ...

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