Thermoacoustic energy analysis of transverse-pin and tortuous stacks at large acoustic displacements

被引：21

作者：

Matveev, Konstantin I. ^{[1
]}

机构：

[1] Washington State Univ, Sch Mech & Mat Engn, Pullman, WA 99164 USA

来源：

INTERNATIONAL JOURNAL OF THERMAL SCIENCES | 2010年 / 49卷 / 06期

基金：

美国国家科学基金会;

关键词：

Heat-sound interactions; Thermoacoustics; Transverse-pin stack; Tortuous stack; Rayleigh's criterion; Lagrangian framework; TUBE; REFRIGERATORS; ENGINES;

D O I：

10.1016/j.ijthermalsci.2009.12.007

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

A simplified method based on Rayleigh's criterion is developed for evaluating thermoacoustic power conversion in transverse-pin and tortuous stacks. Heat transfer and viscous losses are approximated by steady-flow correlations valid at large acoustic displacements with respect to a longitudinal pitch of a pin stack or a characteristic pore size of a random stack. A Lagrangian approach is employed to calculate temperature fluctuations of oscillating gas parcels inside the stack. A computational example is presented for a stack with an inline pin arrangement placed in a standing acoustic wave. Power conversion and efficiencies are evaluated for conditions relevant to a small-scale system. An indirect comparison is also made between theoretical results and experimental data for a prime mover with a wire mesh stack. (C) 2009 Elsevier Masson SAS. All rights reserved.

引用

页码：1019 / 1025

页数：7

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