Mechanical and Aerospace Engineering Seminar

Dr. Qian Xue

Mechanical Engineering, Johns Hopkins University

Will present a talk titled:

Computational Modeling of Fluid-Structure-Acoustics Interactions in Biological and Physiological Systems

Abstract: Dr. Xue’s research focuses on developing and utilizing computer modeling techniques to improve the understanding of mechanism of fluid-structure-acoustics interactions (FSAI) in biological/physiological functions for applications including human disease diagnosis and treatment, bio-inspired design and simulation-assisted healthcare. In this talk, Dr. Xue will first present her work on developing a versatile multiphysics computational platform for simulating FSAI in complex biological/physiological systems. She will then demonstrate the application of the platform on two research projects, including hydrodynamic sensing of seal whisker and human speech production, with more information provided below. Other research projects will be briefly presented in the end.

Hydrodynamic sensing mechanism of seal whisker. Seal whisker sensing has recently attracted increasing research interest because of its extraordinary sensitivity and accuracy. The goal of this research is to elucidate the hydrodynamic mechanisms and sensing abilities that result from the unique geometry of seal whiskers. In this talk, Dr. Xue will present her recent research findings of how a unique geometry feature of seal whisker reduces self-induced noises in calm waters through the generation of stable 3D hair-pin vortices in the wake and how the whisker array signals and wake structure are correlated for wake identification.

Human speech production. Intensive study in speech production has established that vocal fold posturing, tissue properties, and aerodynamic forces all interact to ultimately control vocal fold kinematics and glottal flow that subsequently set crucial acoustic source parameters such as fundamental frequency, registers, and spectral slope. In this talk, Dr. Xue will present her work on developing a high-fidelity subject-specific computer model to simulate the entire integrated speech production process from laryngeal muscle contraction to FSAI with full complexity of anatomy. She will demonstrate that, driven by physiologically measurable parameters and realistic geometry reconstruction from images, the model accurately predicts laryngeal posturing, vocal fold motion and acoustics, supporting the model as a critical tool towards building causal links between vocal fold biomechanics to voice.

Date: January 21, 2022

Location: CAMP 176

Time: 11:15 am

ZOOM Link for virtual attendance

https://clarkson.zoom.us/j/94333678632?pwd=b25DRlY3STRkak9iNGFmMUY1UjNPZz09

Meeting ID: 943 3367 8632

Passcode: 743721

One tap mobile

+16468769923,,94333678632# US (New York)

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Bio: Dr. Qian Xue received her Ph.D. from the Department of Mechanical Engineering at the Johns Hopkins University in 2012. She joined the Department of Mechanical Engineering at the University of Maine as a research assistant professor in 2013 and became a tenure-track assistant professor in 2016. Her primary research areas are computational fluid dynamics, fluid-structure-acoustics interaction, and multiphysics modeling of biological/physiological functions.