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PraVaHa Software

  • 05 Jun 2024
  • 1 min read

Source: TH

Recently, the Indian Space Research Organisation (ISRO) has developed Computational Fluid Dynamics (CFD) software named Parallel RANS Solver for Aerospace Vehicle Aero-thermo-dynamic Analysis (PraVaHa).

  • PraVaHa is a software tool specifically designed to analyse the aerodynamics and thermodynamics of aerospace vehicles like launch vehicles and winged and non-winged re-entry vehicles.
  • It simulates how air flows around aerospace vehicles and calculates the resulting forces and heat effects which is essential to design the shape, structure, and Thermal Protection System (TPS) required for these bodies.
  • It has been extensively used in the Gaganyaan program for aerodynamic analysis of human-rated launch vehicles, such as HLVM3, Crew Escape System (CES), and Crew Module (CM).
  • Any aerospace vehicle while moving through the Earth’s atmosphere during launch or re-entry is subjected to severe aerodynamic and aerothermal loads in terms of external pressure and heat flux.
    • Computational Fluid Dynamics (CFD) is one such tool to predict the aerodynamic and aerothermal loads which solve numerically the equations of conservation of mass, momentum, and energy along with the equation of state.


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