Experimental investigation of nozzle aspect ratio effects on underexpanded hydrogen jet release characteristics

被引：37

作者：

Ruggles, A. J. ^{[1
]}

Ekoto, I. W. ^{[1
]}

机构：

[1] Sandia Natl Labs, Livermore, CA 94551 USA

来源：

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2014年 / 39卷 / 35期

基金：

美国能源部;

关键词：

Dispersion; High pressure; Underexpanded jet; Slot nozzles; Axes switching; HIGH-PRESSURE;

D O I：

10.1016/j.ijhydene.2014.04.143

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Most experimental investigations of underexpanded hydrogen jets have been limited to circular nozzles in an attempt to better understand the fundamental jet-exit flow physics and model this behaviour with pseudo source models. However, realistic compressed storage leak exit geometries are not always expected to be circular. In the present study, jet dispersion characteristics from rectangular slot nozzles with aspect ratios from 2 to 8 were investigated and compared with an equivalent circular nozzle. Schlieren imaging was used to observe the jet-exit shock structure while quantitative Planar Laser Rayleigh Scattering was used to measure downstream dispersion characteristics. These results provide physical insight and much needed model validation data for model development. Copyright (C) 2014, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.

引用

页码：20331 / 20338

页数：8