脊状表面航行器模型减阻特性的水洞实验研究

通过水洞实验研究具有横流方向的脊状表面航行器的阻力特性。运用三分力天平,分别对光滑表面航行器模型和脊状表面航行器模型在零迎角、不同水速下进行阻力测试,得到其减阻特性曲线。实验结果表明,脊状表面航行器模型具有很好的减阻效果,减阻量与脊状结构的特征尺寸、间距以及来流速度有密切关系。在实验工况内,最大减阻量达到11.7%。

Investigation about drag reduction characteristic of iblets surface on vehicle model in water tunnel

The drag characteristic of vehicle models with the transverse riblets surface is studied by water tunnel experiment.The experimental models with smooth surface and riblets surface are tested respectively under the zero attack angle and various velocities by using three force component balance in order to acquire the drag characteristic curves.The experimental results show that the vehicle models with the transverse riblets surface have obvious drag reduction effect,which is correlative with riblet structure＇s size,space and flow velocity.Under the experimental condition the maximal drag reduction effect is 11.7%.