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所属单位：航空学院
发表刊物：ENGINEERING APPLICATIONS OF COMPUTATIONAL FLUID MECHANICS
关键字：Rotor vortex ship airwake coupling ship rotor flowfield Navier-Stokes equations shipborne operation
摘要：A coupling numerical methodology has been developed using the Navier-Stokes solver for ship/rotor flowfield simulation during the helicopter shipboard launch. The steady rotor model (SRM) based on the momentum source approach and unsteady rotor model (URM) based on the moving overset mesh method are respectively employed to account for rotor operations. Studies of coupling ship/rotor flowfield on two typical ships highlight complex interactions over the flight deck. It is shown that the rotor-shipboard vortex interaction and recirculation zone are more serious for small-sized-deck destroyers, while on the straight-through-deck ship the helicopter operations are sensitive to asymmetric distribution of lateral velocity caused by the island. Qualitative and quantitative comparisons in terms of vorticity and velocity between SRM and URM solvers have been conducted. The results demonstrate that both methods can capture complex interactions well. The velocity difference is within 1m/s in most flowfield areas, except the rotor-wake dominant region. With the consideration of computational efficiency, the momentum source approach could be used to effectively conduct the study of helicopter shipboard operations.
ISSN号：1994-2060
是否译文：否
发表时间：2017-01-01
合写作者：徐以中,Zong, Kun,徐国华
通讯作者：史勇杰