Loading...
Please wait, while we are loading the content...
Similar Documents
The stability of two-phase flow over a swept-wing
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Coward, Adrian Hall, Philip |
| Copyright Year | 1994 |
| Description | We use numerical and asymptotic techniques to study the stability of a two-phase air/water flow above a flat porous plate. This flow is a model of the boundary layer which forms on a yawed cylinder and can be used as a useful approximation to the air flow over swept wings during heavy rainfall. We show that the interface between the water and air layers can significantly destabilize the flow, leading to traveling wave disturbances which move along the attachment line. This instability occurs for lower Reynolds numbers than in the case of the absence of a water layer. We also investigate the instability of inviscid stationary modes. We calculate the effective wavenumber and orientation of the stationary disturbance when the fluids have identical physical properties. Using perturbation methods we obtain corrections due to a small stratification in viscosity, thus quantifying the interfacial effects. Our analytical results are in agreement with the numerical solution which we obtain for arbitrary fluid properties. |
| File Size | 1593772 |
| Page Count | 46 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19950011775 |
| Archival Resource Key | ark:/13960/t3324vt96 |
| Language | English |
| Publisher Date | 1994-10-01 |
| Access Restriction | Open |
| Subject Keyword | Fluid Mechanics And Heat Transfer Viscosity Two Phase Flow Flat Plates Computational Fluid Dynamics Reynolds Number Water Flow Asymptotic Methods Flow Stability Air Flow Swept Wings Inviscid Flow Porous Plates Boundary Layer Flow Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
