Article
The Method of the False Transient for the Solution of Coupled Elliptic Equations
School of Mechanical and Industrial Engineering, University of New South Wales, Kensington, Australia 2033
Journal of Computational Physics (Impact Factor: 2.43). 08/1973; 12(4):435461. DOI: 10.1016/00219991(73)900971 ABSTRACT
A method for the numerical solution of a system of coupled, nonlinear elliptic partial differential equations is described, and the application of the method to the equations governing steady, laminar natural convection is presented. The essential feature of the method is the conversion of the equations to a parabolic form by the addition of false time derivatives, thus, enabling a marching solution, equivalent to a single iterative procedure, to be used. The method is evaluated by applying it to a well known twodimensional problem and some examples of its use in three dimensions are given.

 "To solve the system of partial differential equations in the above section, we have employed a false transient method (Mallinson and de Vahl Davis, 1973) by which the nonlinear equations are transformed to parabolic form, and the transformed equations are then discretized on a nonuniform grid. The resulting finite difference equations have been solved by a wellknown alternating direction implicit (ADI) method, following Singh et al. (2000). "
[Show abstract] [Hide abstract]
ABSTRACT: Steady twodimensional natural convection taking place in a rectangular cavity, partially filled with an isotropic porous material, has been investigated numerically using an ADI method. It is assumed that one of the vertical walls of the cavity has a ramped temperature distribution. The vorticitystream function formulation has been used to solve the set of nonlinear partial differential equations governing the flows in the clear region and the adjoining porous region. The effects of Darcy number and Rayleigh number have been discussed in detail. 
 "In this study, the method of modified dynamics or false transients (e.g. [1] [2]) is applied to obtain the structure of a steady flow. The governing equations (1) and (2) are modified as "
[Show abstract] [Hide abstract]
ABSTRACT: We propose a C2C2continuous alternating direction implicit (ADI) method for the solution of the streamfunctionâ€“vorticity equations governing steady 2D incompressible viscous fluid flows. Discretisation is simply achieved with Cartesian grids. Local twonode integrated radial basis function elements (IRBFEs) [D.A. AnVo, N. MaiDuy, T. TranCong, A C2C2continuous controlvolume technique based on Cartesian grids and twonode integratedRBF elements for secondorder elliptic problems, CMES: Comput. Model. Eng. Sci. 72 (2011) 299â€“334] are used for the discretisation of the diffusion terms, and then the convection terms are incorporated into system matrices by treating nodal derivatives as unknowns. ADI procedure is applied for the time integration. Following ADI factorisation, the twodimensional problem becomes a sequence of onedimensional problems. The solution strategy consists of multiple use of a onedimensional sparse matrix algorithm that helps saving the computational cost. High levels of accuracy and efficiency of the present methods are demonstrated with solutions of several benchmark problems defined on rectangular and nonrectangular domains.Applied Mathematical Modelling 04/2013; 37(7):51845203. DOI:10.1016/j.apm.2012.10.034 · 2.25 Impact Factor 
 "To solve the system of partial differential equations in the above section, we have employed a false transient method (Mallinson and de Vahl Davis, 1973) by which the nonlinear equations are transformed to parabolic form, and the transformed equations are then discretized on a nonuniform grid. The resulting finite difference equations have been solved by a wellknown alternating direction implicit (ADI) method, following Singh et al. (2000). "
[Show abstract] [Hide abstract]
ABSTRACT: Steady twodimensional natural convection taking place in a rectangular cavity, partially filled with an isotropic porous material, has been investigated numerically using an ADI method. It is assumed that one of the vertical walls of the cavity has a ramped temperature distribution. The vorticitystream function formulation has been used to solve the set of nonlinear partial differential equations governing the flows in the clear region and the adjoining porous region. The effects of Darcy number and Rayleigh number have been discussed in detail.Journal of Hydrology and Hydromechanics 01/2013; · 1.49 Impact Factor
Similar Publications
Data provided are for informational purposes only. Although carefully collected, accuracy cannot be guaranteed. The impact factor represents a rough estimation of the journal's impact factor and does not reflect the actual current impact factor. Publisher conditions are provided by RoMEO. Differing provisions from the publisher's actual policy or licence agreement may be applicable.