The work is articulated in three separate projects: (a) development and study of a simplified model of thermoacoustic devices; (b) visualization of oscillating temperature and flow fields; (c) numerical modeling. During the past year, in area (a), work has focused on an approximate time-domain formulation of the thermoacoustic instability and on the heat and momentum exchange modeling; in area (b), heat transfer data have been obtained by holographic interferometry and ...
The work summarized is divided into three parts. In Part I the development of a simplified model of thermo-acoustic devices is described and the results of its preliminary analysis documented. In Part II the results so far obtained in an experimental program designed for the visualization of flow and heat transfer in a thermoacoustic stack are described. Part III deals with the progress on a full Navier-Stokes numerical simulation of ...
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