海上石油平台工艺区风环境模拟及韧性评估*

为研究不同风向下海上石油平台工艺区的风场特征和系统韧性，采用Fluent软件从8种不同风向角度对海上平台工艺区风环境进行三维数值模拟，分析研究高于工艺区地面1.5，3，4.5 m水平风场风速分布特征，确定微静风区和强风速区面积，并以微静风区域占比为指标评估系统抗灾韧性。研究结果表明:风速激增区出现在障碍物前缘或侧翼；风口顺延形成强风道，风速介于1.6～3.1 m/s之间；系统韧性与微静风区占比呈现负相关，在1.5 m高度风场处，E-90°风向时微静风区域面积占比约为69%，工艺系统韧性较弱，风险较大；NW-315°风向时微静风区域面积占比约为9.6%，工艺系统韧性较强，风险较小；随着风场高度增大，各个风向系统韧性均有所提高，W-270°风向时系统韧性升幅达12.1%，N-0°风向时系统韧性升幅达12.24%。研究结果可为海上石油平台逃生路线设计、火气监控设备布置及提高平台自身抗灾韧性方面提供指导依据。

Wind environment simulation and resilience assessment of process area on offshore oil platform

In order to study the wind field characteristics and system toughness in the process area of offshore oil platform under different wind directions,the software Fluent was used to conduct three-dimensional numerical simulation of the wind environment in the process area of offshore oil platform from eight different wind directions.The wind speed distribution characteristics of horizontal wind fields 1.5 m,3 m and 4.5 m above the ground in the process area were analyzed and studied,and the areas of micro static wind and strong wind speed were determined,and the disaster resilience of the system was evaluated with the proportion of micro static wind area as the index.The results show that the wind speed surge area appears in the leading edge or flank of the obstacle,and the tuyere is extended to form a strong wind channel and wind speed between 1.6 and 3.1 m/s.The system toughness is negatively correlated with the proportion of static wind zone.At the wind field with a height of 1.5 m,the area of the static wind area accounted for about 69% when the wind direction was E-90°.The toughness of the process system was relatively weak and the risk was relatively high.When the wind direction is NW-315°,the area of the static wind area accounts for about 9.6%.At this time,the toughness of the process system is relatively strong and the risk is relatively small.With the increase of wind field height,the system toughness of each wind direction increased.The system toughness of W-270° wind direction increased by 12.1%,and that of N-0° wind direction increased by 12.24%.The results can provide guidance for the design of escape route,the arrangement of fire and gas monitoring equipment and the improvement of disaster resilience of offshore oil platforms.