Numerical simulations of transport processes in a pulse tube cryocooler: Effects of taper angle

被引：24

作者：

Antao, Dion Savio ^{[1
]}

Farouk, Bakhtier ^{[1
]}

机构：

[1] Drexel Univ, Dept Mech Engn & Mech, Philadelphia, PA 19104 USA

来源：

INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER | 2011年 / 54卷 / 21-22期

基金：

美国国家科学基金会;

关键词：

Thermoacoustic cryocooler; Tapered pulse tube; Acoustic streaming; Acoustic streaming suppression; MODEL;

D O I：

10.1016/j.ijheatmasstransfer.2011.06.016

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

A numerical model is developed for the prediction of the performance and transport characteristics in an orifice pulse tube refrigerator (OPTR). The OPTR is studied for a two specific geometries. In the first geometry (A), only the taper angle of the pulse tube is changed. In the second geometry (B), the taper angle of the pulse tube is varied along with the diameter of the hot heat-exchanger. The taper angle of the pulse tube is shown to have significant effects on the secondary streaming patterns observed in the pulse tube. Tapering the pulse tube improved the performance of the OPTR only for Geometry-B. In this case, suppression of velocity streaming is achieved in the warm end of the pulse tube. (C) 2011 Elsevier Ltd. All rights reserved.

引用

页码：4611 / 4620

页数：10

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