Development of Three-dimensional Grid-free Solver and its Applications to Multi-body Aerospace Vehicles

  • K. Anandhanarayanan Defence Research & Development Laboratory, Hyderabad
Keywords: Grid-free method, chimera clouds, high speed flows, moving multi-body, complex multi-body, computational fluid dynamics


Grid-free solver has the ability to solve complex multi-body industrial problems with minimal effort. Grid-free Euler solver has been applied to number of multi-body aerospace vehicles using Chimera clouds of points including flight vehicle with fin deflection, nose fairing separation of hypersonic launch vehicle. A preprocessor has been developed to generate connectivity for multi-bodies using overlapped grids. Surface transpiration boundary condition has been implemented to model aerodynamic damping and to impose the relative velocity of moving components. Dynamic derivatives are estimated with reasonable accuracy and less effort using the grid-free Euler solver with the transpiration boundary condition. Further, the grid-free Euler solver has been integrated with six-degrees of freedom (6-DOF) equations of motion to form store separation dynamics suite which has been applied to obtain the trajectory of a rail launch air-to-air-missile from a complex fighter aircraft.

Defence Science Journal, 2010, 60(6), pp.653-662, DOI:

Author Biography

K. Anandhanarayanan, Defence Research & Development Laboratory, Hyderabad

Dr K. Anandhanarayanan, received his BTech (Aeronautical Engineering) from MIT, Chennai, in 1991, ME (Guided Missiles) from IAT, Pune, in 1993 and PhD in 2004 from Dept of Aerospace Engineering, Indian Institute of Science, Bengaluru. He is working at the Defence Research and Development Laboratory, Hyderabad since 1993. His areas of interests are algorithm development for CFD applications, Grid-free Euler and Navier-Stokes solvers, direct simulation Monte-Carlo-based Euler-Boltzmann coupled solver for nonequilibrium transitional flows and distributed computing. He is a member of various bodies like the AeSI and ASI. He has about 40 publications in several conferences and journals to his credit.

How to Cite
Anandhanarayanan, K. (2010). Development of Three-dimensional Grid-free Solver and its Applications to Multi-body Aerospace Vehicles. Defence Science Journal, 60(6), 653-662.
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