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On solving the compressible navier-stokes equations for unsteady flows at very low mach numbers
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Chen, K.-H. Pletcher, R. H. |
| Copyright Year | 1993 |
| Description | The properties of a preconditioned, coupled, strongly implicit finite difference scheme for solving the compressible Navier-Stokes equations in primitive variables are investigated for two unsteady flows at low speeds, namely the impulsively started driven cavity and the startup of pipe flow. For the shear-driven cavity flow, the computational effort was observed to be nearly independent of Mach number, especially at the low end of the range considered. This Mach number independence was also observed for steady pipe flow calculations; however, rather different conclusions were drawn for the unsteady calculations. In the pressure-driven pipe startup problem, the compressibility of the fluid began to significantly influence the physics of the flow development at quite low Mach numbers. The present scheme was observed to produce the expected characteristics of completely incompressible flow when the Mach number was set at very low values. Good agreement with incompressible results available in the literature was observed. |
| File Size | 1094999 |
| Page Count | 16 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19940012655 |
| Archival Resource Key | ark:/13960/t49p7zr91 |
| Language | English |
| Publisher Date | 1993-07-01 |
| Access Restriction | Open |
| Subject Keyword | Fluid Mechanics And Heat Transfer Compressibility Pipe Flow Computational Fluid Dynamics Unsteady Flow Two Dimensional Flow Cavity Flow Navier-stokes Equation Incompressible Flow Difference Equations Finite Difference Theory Subsonic Flow Preconditioning Compressible Flow Mach Number Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
