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ISRO’S “PRAVAHA”:SIMPLIFIER



  Jun 05, 2024

ISRO’S “PRAVAHA”:SIMPLIFIER



WHAT IS “PRAVAHA”?

“PraVaHa” is a special software developed by the Indian Space Research Organisation (ISRO) to help scientists and engineers design and analyze how air flows around rockets, airplanes, and other vehicles that travel through the atmosphere. It stands for “Parallel RANS Solver for Aerospace Vehicle Aero-thermo-dynamic Analysis”.

WHY IS IT IMPORTANT?

When rockets or spacecraft travel through the Earth’s atmosphere, especially during launch or re-entry, they face very high pressures and temperatures. Understanding how the air moves around these vehicles helps in designing their shapes, structures, and heat shields to protect them from these extreme conditions. This is where “PraVaHa” comes in handy. It uses computer simulations to predict the forces and heat that these vehicles will experience.

HOW DOES IT WORK?

“PraVaHa” uses a method called Computational Fluid Dynamics (CFD) to solve complex mathematical equations that describe the flow of air around a vehicle. These equations account for the conservation of mass, momentum, and energy, which are fundamental principles in physics. The software can run these simulations on powerful computers, allowing for fast and accurate predictions.

APPLICATIONS IN SPACE MISSIONS

The software has been extensively used in India’s Gaganyaan program, which aims to send humans to space. It helps in designing and analyzing the launch vehicles and the crew modules that will carry astronauts. “PraVaHa” can use both the CPU (central processing unit) and GPU (graphics processing unit) architectures of supercomputers, making it very efficient.

FUTURE DEVELOPMENTS

Currently, “PraVaHa” can simulate airflows for both Perfect Gas and Real Gas conditions. Scientists are also working on improving it to handle the chemical reactions that occur during re-entry into Earth’s atmosphere and in scramjet engines, which are used in advanced aircraft.

BENEFITS

By using “PraVaHa”, ISRO aims to reduce the reliance on expensive commercial software. The indigenous software will be made available to academic institutions and other organizations, helping them to solve complex aerodynamic problems. This will support India’s goal of becoming more self-reliant in technology.

CONCLUSION

“PraVaHa” is a powerful tool developed by ISRO to aid in the design and analysis of aerospace vehicles. It plays a crucial role in ensuring that rockets and spacecraft can withstand the harsh conditions of their missions, contributing to the advancement of India’s space technology and scientific research.



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