An implicit scheme for a meshless Euler solver

Singh, Manish K and Ramesh, V and Balakrishnan, N (2012) An implicit scheme for a meshless Euler solver. In: 26th National Convetion of Aerospace Engineers:Expanding frontiers in aerospace technologies-challenges and opportunities, 24-25 November 2012, Hyderabad.

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In this work, we present implicit scheme for a mesh-less solver based on the LU-SGS procedure which has been adopted to incorporate many advances made in implicit finite volume methodology. We use Modified-CIR split KFVS fluxes, which gives a single step spatial higher order scheme. The Jameson and Yoon’s split flux Jacobian approximations along with matrix free approach adaptation results in diagonally dominant, roubust and cheap implicit scheme. This scheme is tested on 2D airfoil for various flow conditions. The computed results compares quite well with available wind tunnel experiments and other CFD results. The maximum speed up obtained is over 14 as compared to RK4 explicit scheme. This scheme is also tested on flow over ONERA M6 wing at transonic Mach number. The computed results compared very well with experiments and speed up of close to 8 is obtained. Further this scheme is used to simulate flow over Common Research Model (CRM) of fourth AIAA Drag Prediction workshop (DPW4). The results obtained are compared with those from HIFUN; a finite volume based RANS solver. The present Euler result captures major trends reasonably well as indicated in comparison.

Item Type: Conference or Workshop Item (Paper)
Additional Information: organized by Institute of Engineers AP state, Hyderabad
Subjects: AERONAUTICS > Aerodynamics
Depositing User: Mr Manish K Singh
Date Deposited: 11 Jan 2013 10:36
Last Modified: 11 Jan 2013 10:36

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