Shock Wave Observation in Narrow Tubes for a Parametric Study on Micro Wave Rotor Design

• 来源期刊: 热科学学报（英文版）
• 年，卷（期）: 2008,（2）
• 页码范围: 134-140
• 页数: 7页
• 语种: 英文

摘要

Wave rotor is expected to improve the performance of micro gas turbines drastically. In the wave rotor design, the rotor speed is determined principally by the tube length. Therefore, a longer tube is preferable for miniaturized wave rotors to avoid the difficulty in bearings and lubrication system, while it may yield thicker wall boundary layer, shock wave dissipation and so on. In the present study, an experimental apparatus was built to visualize the wave rotor internal flow dynamics in a narrow tube by schlieren method and Laser Doppler Anemometry. In addition, different lengths of the tube were adopted and compared to investigate the effect of wall friction. Finally, 2D numerical simulation was performed and the results were compared with those of experiments.