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Vortical dissipation in two-dimensional shear flows
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Karamcheti, Krishnamurty Horne, W. Clifton |
| Copyright Year | 1986 |
| Description | An exact expression is derived for the viscous dissipation function of a real homogeneous and isotropic fluid, which has terms associated with the square of vorticity, wave radiation, and dilatation. The implications of the principle of maximal dissipation rate, are explored by means of this equation for a parallel channel flow and a cylindrical vortex flow. The consequences of a condition of maximum dissipation rate on the growth of disturbances in an unsteady, laminar shear layer are apparently consistent with predictions and observations of maximum growth rate of vortical disturbances. Finally, estimates of the magnitudes of several dissipative components of an unsteady vortex flow are obtained from measurements of a periodic wall jet. |
| File Size | 1538339 |
| Page Count | 23 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19870006012 |
| Archival Resource Key | ark:/13960/t1kh5g95n |
| Language | English |
| Publisher Date | 1986-12-01 |
| Access Restriction | Open |
| Subject Keyword | Fluid Mechanics And Heat Transfer Shear Flow Unsteady Flow Two Dimensional Flow Orthogonality Shear Layers Thermodynamics Laminar Flow Newtonian Fluids Vortices Dissipation Parallel Flow Anisotropic Media Channel Flow Viscous Flow Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Technical Report |
