Fri, Feb 19, 2021 @ 03:00 PM - 04:00 PM
Aerospace and Mechanical Engineering
Conferences, Lectures, & Seminars
Speaker: Raye Xie, USC AME PhD Student
Talk Title: Development and Validation of a Body-Force Propulsor
Abstract: This talk introduces a body-force propulsor model that replaces the engine blades with a source volume in CFD to produce the equivalent flow turning, work input, and losses. The motivation for developing this model is to capture the effects of inlet flow non-uniformity on propulsor performance, while using a local formulation appropriate for full-aircraft CFD at a computational cost compatible with design studies. The model is able to capture non-axisymmetric effects and only requires specification of the blade camber and thickness distributions. An inviscid formulation for the body-force was previously found to be capable of predicting the inviscid distortion transfer effects, but losses and blade metal blockage effects were not accounted for. An improved formulation with a blockage component is proposed here and is shown to properly predict the propulsor work. Loss terms are included to model 2D profile losses and secondary flow losses. The proposed model is implemented in the flow solver ADflow and validated against NASA rotor 67 experimental data.
Biography: Tianbo (Raye) is a PhD student supervised by Dr. Alejandra Uranga. His research focuses on engine/propulsor modeling in high-fidelity simulations and full-aircraft simulations. Raye has a B.S. from Rensselaer Polytechnic Institute, and a M.S. from USC.
Host: AME Department
More Info: https://usc.zoom.us/j/96549200347?pwd=Uytmd05JbE5qQnRzeEpDSVBXL2ZFZz09
Audiences: Everyone Is Invited
Posted By: Christine Franks