摘要
基于CFD技术建立了一种舰载直升机配平分析方法,以动量源的形式计入直升机旋翼作用,用于分析舰船/直升机之间的耦合干扰问题,并可实现舰机耦合干扰流场的快速计算,突破了原先飞行力学模型中气动参数单向耦合方式的局限性。在该方法中,控制方程选取N-S方程,湍流模型采用k-ε模型,求解方式采用隐式耦合方式,网格上运用自适应切割体网格进行划分,并引入舰载直升机安全着舰判据,发展了一个可用于计算舰载直升机着舰理论风限图的模型。应用建立的方法,以黑鹰直升机作为算例,与试验值进行了对比,验证了方法的有效性。在此基础上应用该模型计算得出了特定舰机组合下的理论风限图。
A trim analysis method for ship-borne helicopter based on CFD technology is established.Incorporating the helicopter rotor action in the form of momentum source,it is used to analyze the coupling interference between the ship and the helicopter,and can realize the fast calculation of the coupling interference flow field of the ship,breaking through the one-way coupling of aerodynamic parameters in the original flight mechanics model limitations of the method.In the method,the N-S equation is selected as the governing equation,the k-εmodel is used as the turbulence model and the implicit method is employed as solver method.An adaptive trimmed mesh is used to generate the grid of computational regions.Through introducing helicopter landing security criterion,a model that can be used to calculate the ship-borne helicopter flight envelop is developed.Applying the established method,the Black Hawk helicopter is taken as the calculation example to compare with experimental data.The effectiveness of the method is verified.On the basis,by applying the model,a theoretical flight envelop for specific combination of ship and helicopter is calculated.
作者
黄斌
郝桐
赵启兵
何巍
HUANG Bin;HAO Tong;ZHAO Qibing;HE Wei(Marine Design and Research Institute of China,Shanghai 200011,China)
出处
《船舶工程》
CSCD
北大核心
2020年第5期5-10,45,共7页
Ship Engineering
关键词
舰载直升机
动量源
耦合流场
理论风限图
ship-borne helicopter
momentum source
coupled flow field
theoretical flight envelop
