Effect of Nozzle Geometry on the Flow Characteristics of Spiral Flow Generated through an Annular Slit

• 来源期刊: 热科学学报（英文版）
• 年，卷（期）: 2007,（2）
• 页码范围: 149-154
• 页数: 6页
• 语种: 英文

摘要

In comparison with previous researches of swirling flow, spiral flow generated in the spiral nozzle has some different flow characteristics. It does not need a forced tangential momentum to generate its velocity and has some different merits from the swirling flow such as long potential core and low tangential velocity. In this study, the effect of nozzle geometry on the flow characteristics in spiral nozzle was investigated by experiment and computation. As a result, the flow characteristics obtained by experiment has a satisfactory agreement with computational results, quantitatively and qualitatively.