G234 温度勾配を与えた管内気柱の熱音響振動に対する安定性解析(G-23 波動・音・衝撃波(3),一般講演)

概要

論文の詳細を見る
This paper examines neutrally stable, thermoacoustic oscillations of a gas column in a quarter-wavelength tube with a temperature gradient axially. An analysis is developed based on the linear, one-dimensional wave equation which takes account of temperature variations along the tube and the lowest boundary-layer effects. If a parabolic temperature distribution along the tube is assumed, solutions can be obtained in a closed form and a frequency equation is derived. Expanding the equation in terms of the ratio of the boundary-layer thickness to the tube radius, a frequency of neutrally stable oscillations is obtained. This result should be compared with Rott's quadratic theory of the ratio for a step temperature distribution.
日本流体力学会の論文
2004-08-09