自卸臂箱型结构的风载荷数值模拟研究

Numerical simulation of wind-load on box structure of self-unloading arm

以29 800 t大湖型自卸散货船的自卸臂为例,利用计算流体软件Fluent,对不同的长高比L/h、表面粗糙度及不同速度情况下的自卸臂箱型结构进行数值模拟。分析比较计算结果,得出风力系数在不同的长高比和表面粗糙度的变化,为后续的自卸臂风阻计算提供参考依据。

By taking the self-unloading arm of a 29 800 t lake self-unloading bulk carrier as an example, this paper numerically simulated the box structure of the self-unloading arm with the different length height ratio (L/h), surface roughness and wind speeds by the computational fluid dynamics software FLUENT. The variations of wind coefficient under the different L/h and the surface roughness are thus obtained by the analysis and comparison of the calculation results, which can provide references for the subsequent resistance calculation of the self-unloading arm.