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Ship Airwake Sensitivities to Modeling Parameters.
| 题名： | Ship Airwake Sensitivities to Modeling Parameters. |
| 作者： | shipman, j. arunajatesan, s. menchini, c. sinha, n. |
| 关键词： | sensitivity, boundary layers, computational fluid dynamics, symposia, unsteady flow, flight simulation, aircraft carriers, predictions, wind tunnel tests, geometry |
| 摘要： | Accurate models for the prediction of ship airwake flowfields are critical to the development of realistic flight simulation tools for aircraft carrier launch and recovery operations. The accurate computation of the ship airwake can be very challenging due to the complexity of the ship geometry, the size of and difficulty in generating a suitable computational mesh, and the large range of length and time scales present in the unsteady flowfield. The present paper investigates the sensitivity of the airwake solution to several modeling parameters, including geometric complexity and the resolution of boundary layers, with the aim of determining the level of fidelity required to obtain an accurate solution. Results are compared to wind tunnel experimental measurements. The results of these studies show that, in general, a majority of the airwake flow features are characterized by bluff body shedding from the larger geometric entities that comprise the ship geometry. Depending on the requirements and intended use of the solution, a certain tradeoff can be reached between solution turn-around/grid generation time and solution accuracy. / NOTE: Conference paper. / Supplementary Notes: Presented at the Aerospace Sciences Meeting and Exhibit (43rd), held in Reno, NV, on 10-13 Jan 2005. Published in the Proceedings of the Aerospace Sciences Meeting and Exhibit (43rd), paper AIAA-2005-1105, 2005. The original document contains color images. / Availability Note: Product reproduced from digital image. Order this product from NTIS by: phone at 1-800-553-NTIS (U.S. customers); (703)605-6000 (other countries); fax at (703)605-6900; and email at orders@ntis.gov. NTIS is located at 5285 Port Royal Road, Springfield, VA, 22161, USA. |
| 总页数： | u0717；15p |
| 报告类型： | 科技报告 |
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