短舱及离散精度对螺旋桨桨叶载荷分布的影响

摘要

Dynamic patched grid of two configurations, named propeller with centre - body and propeller with nacelle,are generated respectively using multi block grid generation technique. Under the same computation conditions, flow field numerical simulation of these two configuration flow fields are conducted respectively under different time and spatial discrete precisions. Compared with the computation results of propeller with centre - body, we find the emergence of nacelle changes the propeller blade load distribution to great extent with varying degrees when using different time and spatial discrete precisions.%采用多块结构网格生成技术,分别生成螺旋桨加中心体和螺旋桨加短舱两种构型的动态面搭接网格.在相同计算状态下,分别对螺旋桨加中心体和螺旋桨加短舱流场进行不同时空离散精度的数值模拟.与螺旋桨加中心体构型的计算结果进行对比,发现短舱的出现较大程度改变了螺旋桨桨叶载荷分布,并且采用不同时空离散精度,载荷分布的改变程度不同.