Non-unique Solutions of the Euler Equations

Baruzzi, Guido S.; Habashi, Wagdi G.; Hafez, M.

doi:10.1007/978-1-4612-3684-9_1

Advances in Fluid Dynamics 1989

DOI: 10.1007/978-1-4612-3684-9_1

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Non-unique Solutions of the Euler Equations

Guido S. Baruzzi¹,

Wagdi G. Habashi²,

M. Hafez³

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1991

1995

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Cited by 2 publications

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A second order finite element method for the solution of the transonic Euler and Navier‐Stokes equations

Baruzzi

Habashi

Guevremont

et al. 1995

Numerical Methods in Fluids

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SUMMARYThe numerical solution of the compressible Euler and Navier-Stokes equations in primitive variables form requires the use of artificial viscosity or upwinding. Methods that are first-order-accurate are too dissipative and reduce the effective Reynolds number substantially unless a very fine grid is used. A first-order finite element method for the solution of the Euler and Navier-Stokes equations can be constructed by adding Laplacians of the primitive variables to the governing equations. Second-order schemes may require a fourth-order dissipation and higher-order elements. A finite element approach is proposed in which the fourth-order dissipation is recast as the difference of two Laplacian operators, allowing the use of bilinear elements. The Laplacians of the primitive variables of the first-order scheme are thus balanced by additional terms obtained from the governing equations themselves, tensor identities or other forms of nodal averaging. To demonstrate formally the accuracy of this scheme, an exact solution is introduced which satisfies the continuity equation identically and the momentum equations through forcing functions. The solutions of several transonic and supersonic inviscid and laminar viscous test cases are also presented and compared to other available numerical data.

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A second order finite element method for the solution of the transonic Euler and Navier‐Stokes equations

Baruzzi

Habashi

Guevremont

et al. 1995

Numerical Methods in Fluids

Self Cite

View full text Add to dashboard Cite

show abstract

Finite element solutions of the Euler equations for transonic external flows

1991

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Non-unique Solutions of the Euler Equations

Cited by 2 publications

References 2 publications

A second order finite element method for the solution of the transonic Euler and Navier‐Stokes equations

A second order finite element method for the solution of the transonic Euler and Navier‐Stokes equations

Finite element solutions of the Euler equations for transonic external flows

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