Recently, the Indian Space Research Organisation (ISRO) has developed Computational Fluid Dynamics (CFD) software named (PraVaHa).

About PraVaHa

• PraVaHa stands for ‘Parallel RANS Solver for Aerospace Vehicle Aero-thermo-dynamic Analysis’.
• Function: 
  • Simulate Flows: It can simulate external and internal flows on launch vehicles, winged and non winged re-entry vehicles.

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• Implications: 
  • Gaganyaan Programme: PraVaHa has been used extensively in the Gaganyaan program for aerodynamic analysis of human-rated launch vehicles, viz, HLVM3, Crew Escape System (CES), and CM.
  • Scramjet Vehicles: Validations of the code are underway for simulating the effect of chemical reactions that occur during air dissociation upon ‘earth re-entry’ and ‘combustion’ as in scramjet vehicles.
• Significance: 
  • Replacement of CFD Simulations: PraVaHa is expected to replace most of the CFD simulations for aero characterisation, which is currently being carried out using commercial software. 
  • Solutions to Complex Aerodynamic Problems: This software is expected to help academia and other institutions, engaged in the design of missiles, aircraft and rockets, to find solutions to complex aerodynamic problems.

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