Numerical Modeling of Thermoacoustic Systems

Nonlinear Models for Thermoacoustic Systems

This dissertation makes two contributions to the modeling of thermoacoustic systems at high amplitudes, where linear theories (Rott, DeltaEC) fall short. First, Dr. Anne de Jong develops a 1D model for heat transfer in parallel-plate heat exchangers in the regenerator. Second, Anne introduces a nonlinear frequency-domain method to directly simulate the periodic steady state. This bypasses the time-consuming ramp-up process involving hundreds of cycles and drastically reduces computation time, as validated using a standing-wave thermoacoustic engine.

Citation for the publication

• Author: Dr. J.A. (Anne) de Jong, M.S. in Engineering

• Type: Dissertation / PhD Thesis (University of Twente, Faculty of CTW – Applied Mechanics)

• Date of defense: July 3, 2015

• ISBN: 978-90-365-3904-3

• DOI: 10.3990/1.9789036539043

• Keywords: Thermoacoustics, nonlinear acoustics, heat transfer, frequency domain, standing-wave motor

• View the publication on the University of Twente Research Portal

• Download the dissertation (PDF)