Hi all question about Possible choices for the expansion TYPE for mesh cells
Hi all, i need to know what is the different between the three types in order to expansion my mesh cells Modal MODIFIED Nodal GLL_LAGRANGE Nodal SEM GLL_LAGRANGE_SEM Thanks, Regards.
Hi, They represent different forms of polynomial expansions. Modified represents a modal or hierarchical expansion GLL_Lagrange is the Lagrange polynomial at the Gauss Lobatto Legendre quadrature point zeros with consistent integration points for a linear mapping. This is a nodal expansion. GLL_Lagrange_SEM is the Lagrange polynomial at the Gauss Lobatto Legendre quadrature point but with the quadrature points using the same points which leads to some additional collocation properties. This is also a nodal expansion. Cheers, Spencer. On 29 Nov 2018, at 19:46, Moto Light <redamansyhh@gmail.com<mailto:redamansyhh@gmail.com>> wrote: Hi all, i need to know what is the different between the three types in order to expansion my mesh cells Modal MODIFIED Nodal GLL_LAGRANGE Nodal SEM GLL_LAGRANGE_SEM Thanks, Regards. _______________________________________________ Nektar-users mailing list Nektar-users@imperial.ac.uk<mailto:Nektar-users@imperial.ac.uk> https://mailman.ic.ac.uk/mailman/listinfo/nektar-users Spencer Sherwin FREng, FRAeS Head, Aerodynamics, Director of Research Computing Service, Professor of Computational Fluid Mechanics, Department of Aeronautics, s.sherwin@imperial.ac.uk<mailto:s.sherwin@imperial.ac.uk> South Kensington Campus, Phone: +44 (0)20 7594 5052 Imperial College London, Fax: +44 (0)20 7594 1974 London, SW7 2AZ, UK http://www.imperial.ac.uk/people/s.sherwin/
Hi Spencer, Thanks a lot! On Thu, Nov 29, 2018 at 10:52 PM Sherwin, Spencer J < s.sherwin@imperial.ac.uk> wrote:
Hi,
They represent different forms of polynomial expansions.
Modified represents a modal or hierarchical expansion
GLL_Lagrange is the Lagrange polynomial at the Gauss Lobatto Legendre quadrature point zeros with consistent integration points for a linear mapping. This is a nodal expansion.
GLL_Lagrange_SEM is the Lagrange polynomial at the Gauss Lobatto Legendre quadrature point but with the quadrature points using the same points which leads to some additional collocation properties. This is also a nodal expansion.
Cheers, Spencer.
On 29 Nov 2018, at 19:46, Moto Light <redamansyhh@gmail.com> wrote:
Hi all, i need to know what is the different between the three types in order to expansion my mesh cells
Modal MODIFIED Nodal GLL_LAGRANGE Nodal SEM GLL_LAGRANGE_SEM Thanks, Regards. _______________________________________________ Nektar-users mailing list Nektar-users@imperial.ac.uk https://mailman.ic.ac.uk/mailman/listinfo/nektar-users
Spencer Sherwin FREng, FRAeS Head, Aerodynamics, Director of Research Computing Service, Professor of Computational Fluid Mechanics, Department of Aeronautics, s.sherwin@imperial.ac.uk South Kensington Campus, Phone: +44 (0)20 7594 5052 Imperial College London, Fax: +44 (0)20 7594 1974 London, SW7 2AZ, UK http://www.imperial.ac.uk/people/s.sherwin/
participants (2)
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Moto Light
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Sherwin, Spencer J