WorldCat Identities

Turkel, E.

Overview
Works: 102 works in 255 publications in 1 language and 4,196 library holdings
Roles: Author, Editor
Publication Timeline
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Most widely held works by E Turkel
Accuracy of schemes with nonuniform meshes for compressible fluid flows by E Turkel( )

4 editions published in 1985 in English and held by 298 WorldCat member libraries worldwide

Accuracy of schemes for the Euler equations with non-uniform meshes by E Turkel( )

5 editions published in 1985 in English and held by 297 WorldCat member libraries worldwide

Application of a Runge-Kutta scheme for high-speed inviscid internal flows by Anutosh Moitra( )

4 editions published in 1986 in English and held by 294 WorldCat member libraries worldwide

On central-difference and upwind schemes by R. Charles Swanson( Book )

5 editions published in 1990 in English and held by 146 WorldCat member libraries worldwide

A class of numerical dissipation models for central-difference schemes constructed with second- and fourth-difference terms is considered. The notion of matrix dissipation associated with upwind schemes is used to establish improved shock capturing capability for these models. In addition, conditions are given that guarantee that such dissipation models produce a TVD scheme. Appropriate switches for this type of model to ensure satisfaction of the TVD property are presented. Significant improvements in the accuracy of a central- difference scheme are demonstrated by computing both inviscid and viscous transonic airfoil flows
High order accurate solutions of viscous problems by Ehteshamul Md Hayder( Book )

4 editions published in 1993 in English and held by 109 WorldCat member libraries worldwide

Central difference TVD and TVB schemes for time dependent and steady state problems by P Jorgenson( Book )

4 editions published in 1992 in English and held by 107 WorldCat member libraries worldwide

Multistage schemes with multigrid for Euler and Navier-Stokes equations : components and analysis by R. Charles Swanson( Book )

4 editions published in 1997 in English and held by 102 WorldCat member libraries worldwide

Preconditioning for numerical simulation of low Mach number three-dimensional viscous turbomachinery flows by Daniel L Tweedt( Book )

4 editions published in 1997 in English and held by 100 WorldCat member libraries worldwide

Construction of three dimensional solutions for the Maxwell equations by Amir Yeffet( Book )

4 editions published in 1998 in English and held by 92 WorldCat member libraries worldwide

Preconditioning and the limit to the incompressible flow equations by E Turkel( Book )

7 editions published in 1993 in English and Undetermined and held by 92 WorldCat member libraries worldwide

We consider the use of preconditioning methods to accelerate the convergence to a steady state for both the incompressible and compressible fluid dynamic equations. We also consider the relation between them for both the continuous problem and the finite difference approximation. The analysis relies on the inviscid equations. The preconditioning consists of a matrix multiplying the time derivatives. Hence, the steady state of the preconditioned system is the same as the steady state of the original system. For finite difference methods the preconditioning can change and improve the steady state solutions. An application to flow around an airfoil is presented. Preconditioning, Euler equations
High-accuracy compact MacCormack-type schemes for computational aeroacoustics by R Hixon( Book )

3 editions published in 1998 in English and held by 90 WorldCat member libraries worldwide

Comparison of three explicit multigrimethods for the Euler and Navier-Stokes equations by Rodrick V Chima( Book )

3 editions published in 1987 in English and held by 90 WorldCat member libraries worldwide

Pseudo-compressiblity methods for the incompressible flow equations by E Turkel( Book )

7 editions published in 1993 in English and held by 88 WorldCat member libraries worldwide

We consider preconditioning methods to accelerate convergence to a steady state for the incompressible fluid dynamic equations. The analysis relies on the inviscid equations. The preconditioning consists of a matrix multiplying the time derivatives. Thus the steady state of the preconditioned system is the same as the steady state of the original system. We compare our method to other types of pseudo-compressibility. For finite difference methods preconditioning can change and improve the steady state solutions. An application to viscous flow around a cascade with a non-periodic mesh is presented. Preconditioning, Incompressible equations
Review of preconditioning methods for fluid dynamics by E Turkel( Book )

4 editions published in 1992 in English and held by 88 WorldCat member libraries worldwide

We consider the use of preconditioning methods to accelerate the convergence to a steady state for both the incompressible and compressible fluid dynamic equations. Most of the analysis relies on the inviscid equations though some applications for viscous flow are considered. The preconditioning can consist of either a matrix or a differential operator acting on the time derivatives. Hence, in the steady state the original steady solution is obtained. For finite difference methods the preconditioning can change and improve the steady state solutions. Several preconditioners previously discussed are reviewed and some new approaches are presented. Preconditioning, Low Mach, Euler equations
An effective multigrid method for high-speed flows by R. Charles Swanson( Book )

5 editions published in 1991 in English and held by 87 WorldCat member libraries worldwide

We consider the use of a multigrid method with central differencing to solve the Navier Stokes equations for high speed flows. The time-dependent form of the equations is integrated with a Runge-Kutta scheme accelerated by local time stepping and variable coefficient implicit residual smoothing. Of particular importance are the details of the numerical dissipation formulation, especially the switch between the second and fourth difference terms. Solutions are given for two-dimensional laminar flow over a circular cylinder and a 15 degree compression ramp
Comparison of several dissipation algorithms for central difference schemes by R. Charles Swanson( Book )

3 editions published in 1997 in English and held by 86 WorldCat member libraries worldwide

Several algorithms for introducing artificial dissipation into a central difference approximation to the Euler and Navier Stokes equations are considered. The focus of the paper is on the convective upwind and split pressure (CUSP) scheme which is designed to support single interior point discrete shock waves. This scheme is analyzed and compared in detail with scalar and matrix dissipation (MATD) schemes. Resolution capability is determined by solving subsonic transonic, and hypersonic flow problems. A finite-volume discretization and a multistage time-stepping scheme with multigrid are used to compute solutions to the flow equations. Numerical results are also compared with either theoretical solutions or experimental data. For transonic airfoil flows the best accuracy on coarse meshes for aerodynamic coefficients is obtained with a simple MATD scheme
Preconditioning methods for low-speed flows by E Turkel( Book )

4 editions published in 1996 in English and held by 86 WorldCat member libraries worldwide

We consider the steady-state equations for a compressible fluid. For low-speed flow, the system is stiff because the ratio of the convective speed to the speed of sound is quite small. To overcome this difficulty, we alter the time evolution of the equations but retain the same steady-state analytic equations. To achieve high numerical resolution, we also alter the artificial viscosity of the numerical scheme, which is implemented conveniently by using other sets of variables in addition to the conservative variables. We investigate the effect of the artificial dissipation within this preconditioned system. We consider both the nonconservative and conservative formulations for artificial viscosity and examine their effect on the accuracy and convergence of the numerical solutions. The numerical results for viscous three-dimensional wing flows and two-dimensional multi-element airfoil flows indicate that efficient multigrid computations of flows with arbitrarily low Mach numbers are now possible with only minor modifications to existing compressible Navier-Stokes codes. The conservative formulation for artificial viscosity, coupled with the preconditioning, offers a viable computational fluid dynamics (CFD) tool for analyzing problems that contain both incompressible and compressible flow regimes
Multigrid for hypersonic viscous two-and three-dimensional flows by Institute for Computer Applications in Science and Engineering( Book )

5 editions published in 1991 in English and held by 86 WorldCat member libraries worldwide

We consider the use of a multigrid method with central differencing to solve the Navier Stokes equation for hypersonic flows. The time-dependent form of the equations is integrated with an explicit Runge-Kutta scheme accelerated by local time stepping and implicit residual smoothing. Variable coefficients are developed for the implicit process that remove the diffusion limit on the time step, producing significant improvement in convergence. A numerical dissipation formulation that provides good shock-capturing capability for hypersonic flow is presented. This formulation is shown to be a crucial aspect of the multigrid method. Solutions are given for two-dimensional viscous flow over a NACA 0012 airfoil and three-dimensional viscous flow over a blunt biconic
A far-field non-reflecting boundary condition for two-dimensional wake flows by Jeffrey S Danowitz( Book )

4 editions published in 1995 in English and held by 85 WorldCat member libraries worldwide

Far-field boundary conditions for external flow problems have been developed based upon long-wave perturbations of linearized flow equations about a steady state far field solution. The boundary improves convergence to steady state in single-grid temporal integration schemes using both regular-time-stepping and local-time-stepping. The far-field boundary may be near the trailing edge of the body which significantly reduces the number of grid points, and therefore the computational time, in the numerical calculation. In addition the solution produced is smoother in the far-field than when using extrapolation conditions. The boundary condition maintains the convergence rate to steady state in schemes utilizing multignd acceleration. (AN)
Multigrid for hypersonic inviscid flows by Naomi H Decker( Book )

4 editions published in 1990 in English and held by 85 WorldCat member libraries worldwide

We consider the use of multigrid methods to solve the Euler equations for hypersonic flow. We consider the steady state equations with a Runge-Kutta smoother based on the time accurate equations together with local time stepping and residual smoothing. We examine the effect of the Runge-Kutta coefficients on the convergence rate considering both damping characteristics and convection properties. We also show the importance of boundary conditions on the convergence rate for hypersonic flow. Also of importance of boundary conditions on the convergence rate for hypersonic flow. Also of importance are the switch between the second and fourth difference viscosity. Solutions are given for flow around a bump in a channel and flow around a biconic section. (Author) (kr)
 
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Alternative Names
Eli Turkel matemàtic israelià

Eli Turkel matemático israelí

Eli Turkel matemáticu israelín

Eli Turkel mathématicien israélien

Turkel, E.

Turkel, Eli

.Tẇrqel, ʾEli

Ṭwrqel, ʾEliy 1944-...

אלי טורקל מתמטיקאי ישראלי

טורקל, אלי

טורקל אלי 1944-....

Languages
English (86)