Date and Place: Thursdays and hybrid (live in 32-349/online via Zoom). For detailed dates see below!
Content
In the Scientific Computing Seminar we host talks of guests and members of the SciComp team as well as students of mathematics, computer science and engineering. Everybody interested in the topics is welcome.
List of Talks
Event Information:
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Tue26May2015
SC Seminar: Emre Özkaya
11:30SC Seminar Room 32-349
Dr. Emre Özkaya, SciComp
Title:
A Discrete Adjoint Approach for Extended Helmholtz Resonator Model in Aeroacoustic Design OptimizationAbstract:
In this talk, we present a novel discrete adjoint approach for aeroacoustic design optimization. The main motivation behind the work is the noise minimization of turbofan engines using Extended Helmoltz type of acoustic liners. This type of optimization problems is characterized by a large number of design parameters and high computational cost caused by the unsteadiness of the physical phenomena and numerical methods that use forcibly higher order schemes in space and time to resolve the aeroacoustic sound propagation. In the first part of the talk, a brief review on the numerical methods used in Computational Aeroacoustics (CAA) will be given. Then, we focus on the Linearized Euler Equations (LEE) and liner impedance modelling using extended Helmholtz resonators. Finally, a discrete adjoint method that is used to compute the sensitivities of sound level with respect to liner parameters will be presented.