2012 Fiscal Year Final Research Report

Basic research of thermoacoustic gas oscillation induced by phase changes at a vapor-liquid interface

Research Project

Project/Area Number	24656125
Research Category	Grant-in-Aid for Challenging Exploratory Research
Allocation Type	Multi-year Fund
Research Field	Fluid engineering
Research Institution	Osaka University
Principal Investigator	YANO Takeru 大阪大学, 大学院・工学研究科, 教授 (60200557)
Co-Investigator(Renkei-kenkyūsha)	NAKAMURA Shigeto 奈良工業高等専門学校, 電子制御工学科, 助教 (80619867)
Project Period (FY)	2012
Keywords	熱音響 / 非平衡相変化 / 気体分子運動論 / 蒸発・凝縮 / 混相流 / エネルギー変換
Research Abstract	The theoretical foundation of conventional thermoacoustic devices are the linear instability induced thermoacoustic boundary layer on the side wall of resonance tube. In the present study, we explore a possibility of new type of thermoacoustic oscillation. The results may be summarized as follows: (1) The construction of general theory which is capable of describing the cyclic phase change (evaporation and condensation) at the interface. The theory is based on the kinetic theory of gases. (2) The stability analysis of the phase-change-induced thermoacoustic oscillations. (3) The consideration of realization of new devices based on the phase-change-induced thermoacoustic oscillations.