STUDY ON THE THRUST CHARACTERISTICS OF SYNTHETIC JETS

2014 Fiscal Year Final Research Report

• Project/Area Number: 24560207
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Fluid engineering
• Research Institution: Kogakuin University
• Principal Investigator: SATO KOTARO 工学院大学, 公私立大学の部局等, 教授 (80252625)
• Co-Investigator(Kenkyū-buntansha): YOKOTA Kazuhiko 青山学院大学, 理工学部, 教授 (70260635)
• Project Period (FY): 2012-04-01 – 2015-03-31
• Keywords: 流体工学 / 噴流 / 流体力 / 非定常流れ

Outline of Final Research Achievements

Although there have recently been various studies on synthetic jets, many issues remain to be clarified, including details of the structure, Coanda effect and thrust characteristics. This study clarified the Coanda effect of synthetic jets. In addition, a thruster model using the Coanda effect of synthetic jets was proposed and thrust characteristics are evaluated. As the main results, the flow of a synthetic jet near a rigid boundary was visualized and the trajectory of a vortex pair is demonstrated. It was confirmed that the flow patterns of the synthetic jets near a rigid boundary depend on H/b0 (offset ratio, normalized step height). The behavior of the asymmetric synthetic jets caused by the presence of the rigid wall was observed experimentally and the results were compared with numerical data. Furthermore, typical flow patterns around the proposed synthetic jet thruster and its thrust characteristics curves were shown.

Free Research Field

工学