2012 Fiscal Year Final Research Report
Development of Ultrafast Response Pressure-Sensitive Paints forVisualization of Shock Wave Phenomena
| Project/Area Number |
23760761
|
|---|
| Research Category |
Grant-in-Aid for Young Scientists (B)
|
| Allocation Type | Multi-year Fund |
|---|
| Research Field |
Aerospace engineering
|
|---|
| Research Institution | Tohoku University |
|---|
Principal Investigator |
NUMATA Daiju 東北大学, 大学院・工学研究科, 助教 (20551534)
|
|---|
| Project Period (FY) |
2011 – 2012
|
| Keywords | 航空宇宙流体力学 |
|---|
| Research Abstract |
The objective of this study is to develop ultrafast-response Pressure-Sensitive Paint (PSP) with the response time less than 1 μs for visualization of shock-wave phenomena. In order to apply PSP to unsteady shock-wave phenomena, Anodized-Aluminum PSP (AA-PSP) with ultrafast response was fabricated and its response time to a step pressure change was evaluated by using a shock tube. To fabricate AA-PSP with ultrafast response, we selected phosphoric acid electrolyte and changed electrolyte temperature in a systematic manner. The improved AA-PSP achieved a response with the time constant of 0.35 μs. This is the fastest PSP ever reported. We applied this AA-PSP to interactions of a moving shock wave with a circular cylinder. The results show that the improved AA-PSP can visualize the shock reflections and the shock diffractions with the ever-highest spatial and temporal resolution.
|
