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| Content Provider | Springer Nature Link |
|---|---|
| Author | Hinman, W. Schuyler Johansen, C. T. |
| Copyright Year | 2015 |
| Abstract | The separation and shock wave formation on the aft-body of a hypersonic adiabatic circular cylinder were studied numerically using the open source software OpenFOAM. The simulations of laminar flow were performed over a range of Reynolds numbers ( $$8\times 10^3 < Re < 8\times 10^4$$ ) at a free-stream Mach number of 5.9. Off-body viscous forces were isolated by controlling the wall boundary condition. It was observed that the off-body viscous forces play a dominant role compared to the boundary layer in displacement of the interaction onset in response to a change in Reynolds number. A modified free-interaction equation and correlation parameter has been presented which accounts for wall curvature effects on the interaction. The free-interaction equation was manipulated to isolate the contribution of the viscous–inviscid interaction to the overall pressure rise and shock formation. Using these equations coupled with high-quality simulation data, the underlying mechanisms resulting in Reynolds number dependence of the lip-shock formation were investigated. A constant value for the interaction parameter representing the part of the pressure rise due to viscous–inviscid interaction has been observed at separation over a wide range of Reynolds numbers. The effect of curvature has been shown to be the primary contributor to the Reynolds number dependence of the free-interaction mechanism at separation. The observations in this work have been discussed here to create a thorough analysis of the Reynolds number-dependent nature of the lip-shock. |
| Starting Page | 717 |
| Ending Page | 727 |
| Page Count | 11 |
| File Format | |
| ISSN | 09381287 |
| Journal | Shock Waves |
| Volume Number | 26 |
| Issue Number | 6 |
| e-ISSN | 14322153 |
| Language | English |
| Publisher | Springer Berlin Heidelberg |
| Publisher Date | 2015-12-30 |
| Publisher Place | Berlin, Heidelberg |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Interaction theory Hypersonic laminar near-wake Computational fluid dynamics Lip separation shock Viscous–inviscid interaction Engineering Thermodynamics, Heat and Mass Transfer Fluid- and Aerodynamics Engineering Fluid Dynamics Thermodynamics Acoustics Condensed Matter Physics |
| Content Type | Text |
| Resource Type | Article |
| Subject | Physics and Astronomy Mechanical Engineering |
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