Zobrazeno 1 - 10
of 13
pro vyhledávání: '"Amareshwara Sainadh Chamarthi"'
Publikováno v:
Journal of Scientific Computing. 95
This paper introduces a novel approach to compute the numerical fluxes at the cell boundaries for a cell-centered conservative numerical scheme. Explicit gradients used in deriving the reconstruction polynomials are replaced by high-order gradients c
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0e5a06fb8c7d11c3d9a822641a8eaaba
https://doi.org/10.1007/s10915-023-02141-5
https://doi.org/10.1007/s10915-023-02141-5
Autor:
Hemanth Chandra Vamsi Kakumani, Amareshwara Sainadh Chamarthi, Natan Hoffmann, Steven H. Frankel
Publikováno v:
AIAA SCITECH 2023 Forum.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::268606966448db7f445e10abe6d9abb5
https://doi.org/10.2514/6.2023-0976
https://doi.org/10.2514/6.2023-0976
This paper extends the gradient-based reconstruction approach of Chamarthi \cite{chamarthi2023gradient} to genuine high-order accuracy for inviscid test cases involving smooth flows. A seventh-order accurate scheme is derived using the same stencil a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::dd432e822400e2bdf689d3811eaa5c5f
Publikováno v:
Computers & Fluids. 258:105859
Accurate high-speed flow simulations of practical interest require numerical methods with high-resolution properties. In this paper, we present an extension and demonstration of the high-accuracy Gradient-based reconstruction and $\alpha$-damping sch
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::eb3e784e2819bf274f2777f9ba59c398
https://doi.org/10.1016/j.compfluid.2023.105859
https://doi.org/10.1016/j.compfluid.2023.105859
This paper presents a gradient-based reconstruction approach for simulations of compressible single and multi-species Navier-Stokes equations. The novel feature of the proposed algorithm is the efficient reconstruction via derivative sharing between
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9152d2ec4d8df2c147123d33cca29096
http://arxiv.org/abs/2205.01034
http://arxiv.org/abs/2205.01034
Publikováno v:
Journal of Computational Physics
This paper discusses the importance of high-frequency damping in high-order conservative finite-difference schemes for viscous terms in the Navier-Stokes equations. Investigating nonlinear instability encountered in a high-resolution viscous shock-tu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f3d1549d9a99e0b361c3d17ece78b39e
Autor:
Amareshwara Sainadh Chamarthi, Hemanth Chandravamsi, Natan Hoffmann, Sean Bokor, Steven H. Frankel
Publikováno v:
Computers and Fluids
In this note, the importance of spectral properties of viscous flux discretization in solving compressible Navier-Stokes equations for turbulent flow simulations is discussed. We studied six different methods, divided into two different classes, with
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::71620a7e7c4935e997cedc72ccd955a0
https://doi.org/10.1016/j.compfluid.2022.105742
https://doi.org/10.1016/j.compfluid.2022.105742
Publikováno v:
Journal of Computational Physics. 374:1120-1151
Steady state simulations} of magnetized electron fluid equations with strong anisotropic diffusion based on the first-order hyperbolic approach is carried out using cell-centered higher order upwind schemes, linear and weighted essentially non-oscill
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::eb0c414cf491cc3b70d7c6e1b29cc94c
https://doi.org/10.1016/j.jcp.2018.08.018
https://doi.org/10.1016/j.jcp.2018.08.018
In this paper, we present a novel hybrid nonlinear explicit-compact scheme for shock-capturing based on a boundary variation diminishing (BVD) reconstruction. In our approach, we combine a non-dissipative sixth-order central compact interpolation and
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7581de58ad969eb42e53c86ae11b7288
http://arxiv.org/abs/2012.09905
http://arxiv.org/abs/2012.09905
In this paper, we present a high order finite difference solver for anisotropic diffusion problems based on the first-order hyperbolic system method. In particular, we demonstrate that the construction of a uniformly accurate fifth-order scheme that
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3e097e8e29d0c631e999f3c6303af0ed
http://arxiv.org/abs/1907.11897
http://arxiv.org/abs/1907.11897