Unsteady aerodynamics simulations on SERC’s SahasraT

Title: Unsteady aerodynamics simulations on SERC’s SahasraT

Figure: Cartesian point distribution around a combat aircraft for the LSFD-U Solver


The computational aerodynamics lab of Aerospace Engineering department of Indian Institute of Science (IISc) uses the Cray SahasraT system in SERC to conduct research in Unsteady aerodynamics: Dynamic ground effect, Scramjet intake flows, Optimization, Meshless solvers: Cartesian mesh calculations and High lift Aerodynamics. In 2017, the lab ran their simulations using 1.7 million core hours. The lab uses their home-grown code, HiFUN, for the simulations.

“Our usage of the Cray system ranges from 1000 cores to over 10000 cores, depending upon the nature of the problem (steady/unsteady etc.) and the availability of the queue. It should be noted that the unsteady simulations cannot be accomplished with the kind of resource we have in our lab.”, says Prof N Balakrishnan, convener of the computational aerodynamics lab.


1. Mohamed Yousuf, N. Balakrishnan, Residual based mesh adaptation for Meshless LSFD-U solver, AIAA 2017-3104.

2. 2. Mondal, Partha and Kanale, Anup V and Balakrishnan, N and Shende, Nikhil V and Wadnerkar, Rohan Pradeep (2017), Optimization of Flap Position Using a Modified Discrete-Vortex Method, AIAA Journal, Vol. 55 (12). pp. 4083-4093.