采用低马赫数假设下的气流运动控制方程组和湍流大涡模拟方法,研究在侧向来风条件下,航母甲板风涡流场的特点。在侧向来风时,航母前部甲板上方压强时均值、变化幅度与周期差异不大;后部甲板上方压强时均值较前半部分略有增加,变化幅度和周期均有所增大。
The control equations with the hypothesis of low Mach air flow and the large eddy simulation method of turbulent flows are used to study the characteristics of vortex in the wind over deck of aircraft carriers under the condition of cross wind. The time-averaged value, the variety scope and the variety period of pressures in the region over the former deck are near invariable. The time-averaged value, the variety scope and the variety period of pressures in the region over the tail deck are little larger than that at the former deck.
2017,39(1): 45-50 收稿日期:2016-01-25
DOI:10.3404/j.issn.1672-7619.2017.01.010
分类号:E925.671
作者简介:袁书生(1963-),男,教授,博士生导师,从事湍流多相流与燃烧研究。
参考文献:
[1] HEALEY J V. The Aerodynamics of Ship Superstructures[C]//.In:Proceedings of AGARD Conference-Aircraft Ship Operations held in France, AGARD-CP-509, 1991:4.1-4.14.
[2] POLSKY S, NAYLOR S. CVN airwake modeling and integration:initial steps in the creation and implementation of a virtual burble for F-18 carrier landing simulations[C]//. AIAA 2005-6298, AIAA Modeling and Simulation Technologies Conference and Exhibit, San Francisco, California, August, 2005:15-18.
[3] FINDLAY D B, GHEE T. Experimental investigation of ship airwake flow control for a US navy flight II-A class destroyer (DDG)[C]//. AIAA 2006-3501, 3rd AIAA Flow Control Conference, San Francisco, California, 2006:5-8.
[4] BOGSTAD M C, HABASHI W G, AKEL I, et al. Computational-fluid-dynamics based advanced ship-airwake database for helicopter flight simulators[J]. Journal of aircraft, 2002, 39(5):830-838.
[5] BRIDGES D O, HORN J F, ALPMAN E, et al. Coupled flight dynamics and CFD analysis of pilot workload in ship airwakes[C]//. AIAA 2007-6485, AIAA Atmospheric Flight Mechanics Conference and Exhibit, Hilton Head, South Carolina, August, 2007, 20-23.
[6] REHM R G, BAUM H R. The equations of motion for thermally driven, buoyant flows[J]. Journal of Research of the NBS, 1978, 83:297-308.
[7] DEARDORFF J W. Numerical investigation of neutral and unstable planetary boundary layers[J]. Journal of Atmospheric Sciences, 1972, 29:91-115.
[8] DEARDORFF J W. Stratocumulus-capped mixed layers derived from a three-dimensional model[J]. Boundary-Layer Meteorol, 1980, 18:495-527.
[9] WERNER H, WENGLE H. Large-eddy simulation of turbulent flow over and around a cube in a plate channel[C]. In 8th Symposium on Turbulent Shear Flows, 1991, 34:155-168.
[10] FLOYD J, FORNEY G, HORTIKKA S, et al. Fire Dynamics Simulator(Version 6)-Technical Reference Guide[M]. NIST Special Publication 1018, 2013.
[11] FLOYD J, FORNEY G, HOSTIKKA S, et al. Fire dynamics simulator(version 6)-user's guide[M]. NIST Special Publication 1019, 2013.