某型登陆舰的舰面流场仿真与分析

Simulation and Analysis of Flight Deck Airflow for a Certain Landing Ship

摘要:

舰载直升机是登陆舰实现“垂直登陆”的主要武器,研究舰面流场特性对直升机安全性能与操纵性都有重要意义。建立了某型登陆舰的三维模型,以风向角为 30°,风速为 15m/s的流场为例,通过数值仿真得到了飞行甲板上方的气流分布,经分析机库陡壁效应引起的下冲气流分量在机库后方形成了涡流区,在直升机的起降过程中应避免通过该涡流区,以保障直升机的安全起降、平稳飞行。

Abstract:

Shipboard helicopter is an important vertical landing weapon for landing ship. Research on flight deck airflow is of great significance to the control and safety of the helicopter. With three-dimensional model of a certain landing ship established, the airflow distributions in flight deck were calculated by simulation in the condition of wind angle 30°and speed 15 m/s, the analysis of which showed that the downwash from han. gar steep face made the vortex area behind the hangar. The helicopter should avoid this area when taking off and landing for the safety and steady flight.