Thesis
Variable Area Nozzle Slot Synthetic Jet
Washington State University
Master of Science (MS), Washington State University
2023
DOI:
https://doi.org/10.7273/000005286
Abstract
Variable area nozzle synthetic jets have shown their potential in outperforming fixed nozzle jets. However, varying the nozzle size is difficult due to the need of a mechanism to control the variation. This mechanism can become a point of failure and may be difficult to miniaturize. A new synthetic jet nozzle is needed that can overcome such difficulties A new aperture for a synthetic jet is designed, simulated, and tested in the lab. This variable area slot nozzle’s final design opens and closes with guide bars that are controlled by the movement of the piston head itself. The shutter positions are consequentially controlled by the piston position. Simulations are done using ANSYS CFX, for two steady state conditions, two fixed shutter transient conditions, and one fully operational condition. The fixed shutter transient cases show similar flow profiles to their steady state counterparts. The moving shutter simulation successfully demonstrates the behavior of the synthetic jet as the formation and growth of the jet and vortex rings can be seen. Particle image velocimetry (PIV) experiments are done in the lab for two fixed shutter conditions and one moving shutter condition. The moving shutter experiment yielded vortices that were 33% higher than those of the fixed closed shutter case.
Metrics
Details
- Title
- Variable Area Nozzle Slot Synthetic Jet
- Creators
- Nate Ficklin
- Contributors
- Stephen Solovitz (Advisor)Hua Tan (Committee Member)Jong-Hoon Kim (Committee Member)
- Awarding Institution
- Washington State University
- Academic Unit
- Engineering and Computer Science (VANC), School of
- Theses and Dissertations
- Master of Science (MS), Washington State University
- Publisher
- Washington State University
- Number of pages
- 62
- Identifiers
- 99901019938901842
- Language
- English
- Resource Type
- Thesis