摘要
采用CFD方法模拟船体纵横摇工况下船舶海面风测量过程,分析船体、上层建筑造成的气流畸变以及船体摇摆对海面风测量数据偏差的影响规律,利用海上实船实验数据对仿真结果进行验证,结果表明:考虑船体摇摆工况的仿真结果更接近实验数据;船体、上层建筑对海面气流的影响不可忽略,仅通过船体姿态校正相对风测量数据是不充分的;船体纵横摇工况下测风点处平均相对风速偏差不仅与迎风角度有关,还与海况有关。随着相对风速增大,同一迎风角度条件下的平均相对风速偏差趋于稳定,船体周围瞬态气流场在时间平均后呈现雷诺数无关性。
Ship sea surface wind measurement process under the pitch and roll conditions was simulated using the CFD method to analyze the air flow distortion caused by hull and superstructure as well as the influence of ship pitch and roll on wind measurement bias. The accuracy of the simulation results was verified by ship experiments at sea. The results show that the simulation results considering pitch and roll conditions are closer to the experimental measurements. The influence of ship hull and superstructure on the sea surface air flow distortion cannot be neglected, so correcting relative wind measurements only by hull attitude alone is inadequate. The average relative wind speed bias under pitch and roll conditions is not only related to the upwind angle but also to the sea condition. As the relative wind speed increases, the average relative wind speed bias under the same upwind angle tends to be stable, which indicates that the transient airflow field around the ship after time averaging shows Reynolds number independence.
作者
胡桐
漆随平
王东明
郭颜萍
邹靖
仇志金
HU Tong;QI Sui-ping;WANG Dong-ming;GUO Yan-ping;ZOU Jing;QIU Zhi-jin(Qilu University of Technology（Shandong Academy of Seierw＇es;Institute of Oceanographic Instrumentation,Shandong Academy of Scierw＇e;Shandong Provirw.ial Key Laboratory of Ocean Environmental Monitoring Technolog;National Engilzeering and Technological Research Center of Marine Monitoring Equipment,Qingdao 266001,Shandong Province,China)
出处
《海洋技术学报》
2018年第3期79-85,共7页
Journal of Ocean Technology
基金
国家自然科学基金资助项目(41606112)
山东省科学院青年基金资助项目(2014QN034)
山东省重点研发计划资助项目(2015GSF115018)
