Computational Aeroacoustics Using the Generalized Lattice Boltzmann Equation, Phase I

The overall objective of the proposed project is to develop a generalized lattice Boltzmann (GLB) approach as a potential computational aeroacoustics (CAA) tool for noise prediction thus contributing to NASA's goal of reducing noise levels of subsonic aircraft. Lattice Boltzmann equation (LBE) based simulations are attractive for CAA as they can handle very complex geometries and parallelize with excellent scalability. This enables efficient simulation of very large problems, such as airframe systems. The innovativeness of the proposed GLB method lies in employing multiple relaxation times to capture different hydrodynamic/acoustic modes accurately, in contrast to usual LBE solution methods using a single relaxation time for all modes. The GLB approach would enable higher fidelity CAA simulations as well as exhibit stability at higher Reynolds numbers. Multiple relaxation times can also enable represent turbulence better for large eddy simulation. In phase I, the feasibility of the GLB method will be evaluated by coding a 3D solver, including a subgrid scale turbulence model and multiblock grid refinement algorithms, with testing against several CAA benchmark problems. If successful, a validated package based on the GLB method interfaced to NASA pre/post processors, like CART3D, for complex geometries would be developed in Phase II.

This is a mature technology (TRL 7+) — the realistic path in is usually NASA's Technology Transfer Program: licensing an existing NASA patent, or a Space Act Agreement to use NASA facilities/expertise directly. NASA also runs a startup licensing program with no upfront fee for companies formed to commercialize a specific NASA technology.

None of these are guaranteed paths for this specific project — TechPort itself doesn't have an "apply" button. Reaching out to the contact(s) above with a specific question is usually the fastest way to find out what's actually open.