Coupled Vortex Transport Method and RANS CFD for V
at ORAU Workforce Solutions

Date Posted: 12/23/2018

Opportunity Description

Computational fluid dynamics have demonstrated significant improvements in rotorcraft aerodynamics and wake geometry predictions over lifting line and vortex filament methods. Most CFD calculations use Reynolds-Averaged Navier-Stokes (RANS) methods, but some researchers have investigated the vorticity transport form of the Navier-Stokes equations, in both traditional gridded and gridless, vortex particle-based formulations. Because vertical lift platforms operate in the subsonic airspeed range, and rotor airloads are highly dependent on the wake geometry and strength, vortex methods can potentially capture the far-field wake vorticity with lower dissipation than RANS methods. Many researchers have coupled traditional lifting line aerodynamics with high-fidelity vorticity transport calculations, but few have attempted coupling conventional RANS CFD and vorticity transport methods . ARL-VTD is interested in investigating vorticity transport for aerodynamics around both manned rotorcraft and small, flapping wing unmanned vehicles. Vorticity sources should be calculated from a conventional CFD calculation for the near body to produce a high fidelity, first principles calculation of the entire flow field. The analysis should also be parallel and scalable to take advantage of distributed memory high performance computing resources available to the Army.

Opportunity Snapshot

About Us

Oak Ridge Associated Universities (ORAU) administers Science, Technology, Engineering and Mathematics (STEM) research participation programs for civilians such as:

The U.S. Army Research Laboratory (ARL) Research Associateship Program (RAP) allow Postdoctoral Fellows, Journeyman Fellows (undergraduate and graduates students and recent graduates), Senior Researchers, and Summer Faculty engage in research initiatives of their own choice, that are compatible with the interests of the government and will potentially contribute to the general effort of the ARL. Scientists and engineers at ARL help shape and execute the Army's program for meeting the challenge of developing technologies that will support Army forces in meeting future operational needs.

Research opportunities include, but are not limited to the following disciplines: Aerospace Engineering, Anthropology, Archeology, Biology, Biochemistry, Biological Engineering, Biomechanical Engineering, Biomedical Engineering, Chemical Engineering, Chemistry, Computer Science, Computer Engineering, Electrical Engineering, Environmental Health Risk Assessment, Environmental Science, Entomology, Epidemiology, Ergonomics, Geology, Health Education Mechanical Engineering, Materials Science, Mathematics, Nanotechnology, Photonics, Physics, Public Health Economics, Public Health Policy, and more.

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