Summit Early Science Video Series: Combustion Research

TL;DR

The Summit supercomputer enables faster and more accurate simulations of turbulent reacting flows, which are crucial for improving the performance and reducing emissions in various engines.

Transcript

our major science problem focuses on turbulent reacting flows as it applies to mostly propulsion and power systems that's one of the classical grand challenge problems from the perspective of simulation and modeling when I say propulsion that could be diesel engines and trucks internal combustion engines in your car gas turbine on an airplane any k... Read More

Key Insights

• ✊ Turbulent reacting flows are a major challenge in propulsion and power systems due to the complexity of mixing and combustion.
• ✊ The Summit supercomputer offers the computational power required to simulate these flows predictably.
• ❓ Improved simulations enable the development of more accurate engineering models to enhance performance and reduce emissions.
• ✖️ Turbulent reacting flows involve multi-scale and multi-physics phenomena, requiring comprehensive modeling approaches.
• 🫗 Combustion instabilities in liquid rockets can cause engine destruction within milliseconds, emphasizing the need for reliable simulations.
• 👻 Summit's GPUs and increased bandwidth allow simulations to run up to 25 times faster than on other machines.
• 🥺 Faster simulations on Summit lead to innovative design, improved fuel economy, and higher performance in engines.

Questions & Answers

Q: What are turbulent reacting flows and why are they important in propulsion and power systems?

Turbulent reacting flows refer to the mixing and combustion of fuel and oxidizer in engines. They are crucial in propulsion and power systems as they directly impact performance, efficiency, and emissions.

Q: Why is simulating turbulent reacting flows a grand challenge problem?

Simulating turbulent reacting flows is challenging due to the multi-scale nature of turbulence, involving a wide range of time and length scales. Additionally, it is a multi-physics problem, requiring models that account for fluid dynamics, thermodynamics, and heat transfer simultaneously.

Q: How does the Summit supercomputer contribute to improving simulations of turbulent reacting flows?

The Summit supercomputer provides the computational power and size needed for accurate and efficient simulations. With its high-performance GPUs, simulations can run much faster, allowing for more detailed and reliable predictions.

Q: How can improving the predictive capability of simulations benefit engineering models and industry?

Enhancing the predictive capability of simulations allows for better understanding and control of turbulent reacting flows. This knowledge can be used to develop engineering models that industry can rely on for fast and reliable performance optimization and emission reduction.

Summary & Key Takeaways

• Turbulent reacting flows, found in engines like diesel engines, gas turbines, and rockets, are challenging to simulate due to their complex nature.

• The Summit supercomputer provides the computational power needed to predictably model and understand these flows, leading to improved engineering models and design.

• With the use of Summit and GPUs, simulations can run up to 25 times faster, allowing for faster advancements in understanding and optimizing turbulent reacting flows.