Tag Archives: Exa

Aeroacoustic simulation delivers breakthroughs in aircraft noise reduction

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Simulated radiated sound field from a full-scale business jet during landing with flaps and main landing gears deployed. Credit: NASA Langley Research Center

Aircraft manufacturers face increasingly stringent standards for reducing community noise. Conventional aircraft development methods based on engineering experience, past designs and flight testing will not suffice to meet future noise reduction targets. Computational fluid dynamics (CFD) software based on so-called Reynolds-averaged Navier-Stokes (RANS) methods has revolutionized aircraft aerodynamics engineering, but is insufficient for high-fidelity aeroacoustic simulation. However, the Lattice-Boltzmann-based technology of Exa Corporation’s PowerFLOW software provides aeroacoustic simulation accuracy comparable to wind tunnels and flight testing. Today, PowerFLOW’s unique value and benefits for aeroacoustic simulation are being proven in practice by NASA, Embraer and others deploying the software to achieve breakthroughs in aircraft noise prediction and mitigation. Download the white paper to continue reading

Move from wind tunnel testing to simulation-driven design offers typical automakers more than 500% ROI

Moving from wind tunnel testing of physical prototypes to simulation-driven design processes can offer typical automotive OEMs more than 500% ROI (return on investment), according to research from Tufts University’s Gordon Institute for engineering management. Continue reading

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Flow field around Tesla Model S simulated with Exa software identifies areas of higher drag in red. Source: Tesla and Exa Corp.