Plenary Lecture

The Aeroacoustics of Turbulent Flows

 


Professor Marvin Goldstein
NASA Glenn Research Center
U.S.A.
E-mail: marvin.e.goldstein@nasa.gov
 

Abstract: Aerodynamic noise prediction has been an important and challenging research area since James Lighthill first introduced his Acoustic Analogy Approach over fifty years ago. This talk attempts to provide a unified framework for the subsequent theoretical developments in this field. It assumes that there is no single approach that is optimal in all situations and uses the framework as a basis for discussing the strengths weaknesses of the various approaches to this topic. But the emphasis here will be on the important problem of predicting the noise from high speed air jets. Specific results will presented for round jets in the 0.5 to 1.4 Mach number range and compared with experimental data taken on the Glenn SHAR rig. It is demonstrated that non-parallel mean flow effects play an important role in predicting the noise at the supersonic Mach numbers. The results explain the failure of previous attempts based on the parallel flow Lilley model (which has served as the foundation for most jet noise analyses during past two decades).
 

Brief Biography of the Speaker:
Dr. Goldstein was chief scientist at the NASA Glenn Research Center from1980 to 2004. His technical accomplishments include a long list of "firsts," including the development of an explanation for boundary layer receptivity to free stream disturbances, a rational analysis of oblique wave modal interactions in shear layers, the theory for the so-called Klebanoff modes that are observed in boundary layers at high to moderate levels of free steam turbulence levels and an analytical solution for the problem of flutter in a cascade with strong in passage shock waves. He also derived the fundamental equation of the compressible rapid distortion theory, which is frequently referenced and is the starting point for many papers in the turbulence literature.
Goldstein is an adjunct professor of mathematics at Case Western Reserve University (Cleveland) and has taught at MIT. A specialist in unsteady fluid mechanics with emphasis on transition and stability, unsteady turbomachinery flow, aeroacoustics and aeroelasticity, Goldstein has published over 120 refereed papers, and authored the book "Aeroacoustics" (McGraw-Hill Company, 1976), which has been translated into Russian and Japanese. This book has become the classical reference book for engineers and scientists throughout the world. He has presented many invited and keynote lectures at scientific conferences, symposia and special celebratory events.
A Fellow of the American Institute of Aeronautics and Astronautics (AIAA), Goldstein served on the Publications Committee and as chairman of the Aeroacoustics Technical Committee. He is also a Fellow of the American Physical Society (APS), where he served on the Executive Committee of the Division of Fluid Dynamics and the Otto LaPorte Award Nominating Committees. He recently chaired the AFOSR Fluid Mechanics Selection Panel, the Selection Committee for the National Academy of Sciences Award in Aeronautical Engineering and the American Physical Society’s Fluid Mechanics Prize committee. He is also a member of Northeastern University’s Industrial Advisory Board, of the Editorial Board of the International Journal of Aeroacoustics, and of the Scientific Committee of the International Congress of Sound and Vibration.
Among his honors is election to membership in the National Academy of Engineering (1990), the APS Otto LaPorte Award for Research in Fluid Dynamics (now the Fluid Dynamics Prize,1997), the AIAA Aeroacoustics Award (1983), the AIAA Pendray Award (1983) ,Northeastern University's Outstanding Engineering Alumnus Award (2002), and the ASME Fluids Engineering Award (2003). Goldstein received his bachelor's degree in mechanical engineering at Northeastern University (Boston), earned his master's degree in mechanical engineering at the Massachusetts Institute of Technology, and his doctorate at the University of Michigan..