Abstract
A finite-volume upwind algorithm for solving the 3-D Euler equations with a moving grid has been developed for computing helicopter forward-flight rotor flows. The computed pressure distributions and shock positions of high-speed rotor flow are compared with various experimental data as well as with other numerical results, and the agreement is encouraging. A comparison of quasi-steady solutions with unsteady solutions reveals that when a shock occurs in the flowfield, the assumption of quasi-steady flow may fail due to the time-lag of the shock motion. Similarly, three-dimensional effects cannot be neglected. Sufficient subiterations for each time step are required to avoid numerical lag effects in using the present method. The redistribution of the residual due to the coordinate transformation is discussed. For high-order MUSCL-type schemes, a coordinate-independent solution can be obtained by interpolating primitive variables.
| Original language | English |
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| Publication status | Published - 1989 Jan 1 |
| Externally published | Yes |
| Event | AIAA 20th Fluid Dynamics, Plasma Dynamics and Lasers Conference, 1989 - Buffalo, United States Duration: 1989 Jun 12 → 1989 Jun 14 |
Other
| Other | AIAA 20th Fluid Dynamics, Plasma Dynamics and Lasers Conference, 1989 |
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| Country/Territory | United States |
| City | Buffalo |
| Period | 89/6/12 → 89/6/14 |
ASJC Scopus subject areas
- Aerospace Engineering
- Condensed Matter Physics
- Electrical and Electronic Engineering
- Engineering (miscellaneous)