题目：Overview of recent Aeroacousticsresearch at lSVR
时间：2026年4月24日 10:30-12:00
地点：365英国上市公司官网 A401会议室
邀请人：杨程 副教授（振动、冲击、噪声研究所）
报告人：Assoc. Prof. Chaitanya Paruchuri（英国南安普顿大学）
Biography
Dr. Chaitanya Paruchuri is currently Head of the Acoustics Group and Associate Professor at the Institute of Sound and Vibration Research (ISVR), University of Southampton. He is a member of the Rolls-Royce University Technology Centre in Propulsion Systems Noise and his recent research interests include propeller noise, aerofoil noise, and duct acoustics.
报告人：Dr. Sergi Palleja Cabré（英国南安普顿大学）
Biography
Dr Sergi Palleja Cabré is a Senior Research Fellow at the Institute of Sound and Vibration Research (ISVR), University of Southampton. His research combines experimental aeroacoustics and low order analytical modelling, with a focus on understanding and predicting noise from aircraft and propulsion systems. His earlier work includes experimental and modelling studies of over the rotor (OTR) acoustic liners and aerofoil noise reduction technologies, while more recent research has focused on noise prediction for installed propellers in the context of urban air mobility (UAM) vehicles. He is currently also working on whole aircraft noise modelling addressing the environmental impact of future civil aviation.
Abstract
This talk presents an overview of recent aeroacoustics research carried out at the Institute of Sound and Vibration Research (ISVR), University of Southampton, with a focus on fundamental mechanisms of aerofoils.
The first part of the talk addresses tip leakage noise, one of the least understood noise sources in turbomachinery. Arising from the interaction between tip leakage flow, blade tips, and the casing boundary layer, this noise source remains difficult to predict and control. Using experimental and parametric investigations, the study identifies three key non-dimensional parameters governing tip leakage noise: the angle of attack, the ratio of maximum aerofoil thickness to gap size, and the ratio of gap size to boundary-layer thickness. These parameters are shown to regulate two fluid-dynamic instabilities—vortex shedding and shear-layer roll-up—which are responsible for the dominant tip leakage noise mechanisms.
The second part of the talk focuses on the aeroacoustics of tandem plates in turbulent inflow. This work investigates the hydrodynamic origin of the π-phase inversion observed in the acoustic radiation from two flat plates arranged in tandem. While classical unsteady aerodynamics predicts the generation of induced wake vorticity at a plate trailing edge to satisfy the unsteady Kutta condition, this mechanism has remained difficult to isolate experimentally in grid-generated turbulence. The tandem-plate configuration provides a useful framework for exposing this behaviour.
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