Abstract
The introduction of the full paper discusses relevant matters and then proposes what we relieve to be a useful method mentioned in the title. Sections 1 and 2 explain our method; their core consists of: "Based on static-state structured grid of the CFD, a new technology of dynamic structured grid generation is proposed. Through the influence functions, the displacement and deformer of the flow-field boundary are spread to ambient flow-field. The node of the grid can obtain the displacement through the influence functions and a new grid is built. Compared with the spring analogy, influence functions can give a better quality of the grid and is suitable to large boundary displacement and deformed boundary. This technology is especially suitable to generating the body fitted dynamic structured grid and to meeting the Navier Stokes equations requirement." Coupling Navier Stokes equations with constrained oscillatory motion equation, this paper numerically simulates the unsteady flow-field of the pitching motion of the NACA0012 airfoil. The numerical simulation results, presented in Figs. 8, 9 and 10, are in good agreement with the wind tunnel test results (AGARD-CT1), thus verifying the usefulness of our method of the dynamic structured grid generation technology.
| Original language | English |
|---|---|
| Pages (from-to) | 887-891 |
| Number of pages | 5 |
| Journal | Xibei Gongye Daxue Xuebao/Journal of Northwestern Polytechnical University |
| Volume | 29 |
| Issue number | 6 |
| State | Published - Dec 2011 |
Keywords
- Airfoils
- Algorithms
- Analysis
- Computational fluid dynamics
- Computational geometry
- Control
- Deformer
- Dynamic
- Experiments
- Functions
- Models
- Navier Stokes equations
- Numerical methods
- Simulation
- Unsteady flow
- Vibrations(mechanical)
- Wind tunnels