Can you learn old physics with new tricks? A modern perspective on high-speed-jet noise.

Daniel Edgington-Mitchell

Associate Professor of Mechanical & Aerospace Engineering
Monash University

Seminar Information

Seminar Series
Fluid Mechanics, Combustion, & Engineering Physics

Seminar Date - Time
March 6, 2025, 9:00 am
-
10:00

Seminar Location
Hybrid: In Person & Zoom (connection in link below)

Engineering Building Unit 2 (EBU2)
Room 479

Seminar Recording Available: Please contact seminar coordinator, Jake Blair at (j1blair@ucsd.edu)

Daniel Edgington-Mitchell

Abstract

High-speed shear flows are often characterized by some kind of aeroacoustic resonance phenomenon. Researchers made remarkable progress towards understanding these phenomena with careful experiments, and were able to propose phenomenological models for them. With the development of new experimental, theoretical, and numerical tools, we can revisit these problems, and replace the original phenomenological models with ones more deeply rooted in the underlying physics. As we do so however, we find ever-increasing complexity underlying some of these processes.

In this talk, I will discuss how our understanding of resonance processes in supersonic jets has changed through the years, with the application of increasingly sophisticated techniques. In so doing, I will barrage you with acronyms: PIV, LES, POD, SPOD, BMD, LSA, PSE, SPLSA, PFE, and perhaps a few others I will invent before the talk.

Additionally, I will provide an overview of scholarships available to support PhD study in Australia, and some reasons why you might want to consider it as a destination for postgraduate study.

Speaker Bio

A/Prof. Daniel Edgington-Mitchell received his PhD from Monash University in 2013, spending 18 months of his candidature working in the High-Temperature Gas-Dynamics Laboratory at Stanford via a Fulbright Fellowship. Daniel has worked on a range of topics in fluid mechanics: shock-tube diagnostics with Prof. Hanson at Stanford, asthma-puffer flows with the pharmaceutical industry, and pressure-gain combustion with the Technical University of Berlin. His primary research focus is on the study of aeroacoustic resonance mechanisms in high-speed jets, using a combination of experimental techniques and reduced-order modelling. He is currently an Australian Research Council Future Fellow, focusing on resonance processes in rocket nozzles, and is also working with the US Office of Naval Research on resonance in rectangular jets. He was the inaugural chair of the Faculty of Engineering Equity, Diversity and Inclusivity committee, and recipient of the Australasian Fluid Mechanics Society’s Emerging Leader award for 2024.