Recently,the Liutex-based force field models are proposed and applied to some two-dimensional flows to explore the possibility of direct vortex control strategies.In this paper,we applied the Liutex-based centripetal force model to three-dimensional flow
The Gymnarchus niloticus fish can swim in surging and heaving directions only with a long undulating ribbon fin while keeping its body along almost straight line.These features substantially inspire the design of underwater vessels with high maneuverabili
The mechanism of the flow resistance in open channels and pipelines is of vital importance for various critical issues related to the water flow.The Nikurade\'s method of calculating the friction factor is not applicable in some cases.It is necessary to
Part 2 reports the validation,local force and local flow study results for the free-running added power simulations whose conditions are the same as the self-propulsion test except for the increased propeller rotational speed and the presence of wave.When
Hydrodynamic cavitating flows usually consist of 3-D intense vortical flows that are detached from solid boundaries.Detached vortical flows normally generate heaps of cavitating flow structures,which,in turn,govern the location of cavitation erosion befor
Fluid kinematics describes the fluid motion without consideration of any force.Classical fluid kinematics adopts Helmholtz velocity decomposition,which is equivalent to Cauchy-Stokes(CS)velocity gradient tensor decomposition.CS decomposes the velocity gra
The transition in the boundary-layer flow affects the hydrodynamic performances of hydraulic machineries,as the key components in the ship propulsion system.The shear stress transfer(SST)γ-Reθt transition model is an important prediction tool in the bound
This paper presents experimental measurements by the time-resolved particle image velocimetry(TR-PIV)for the turbulent boundary layer(TBL)over the smooth surface,the superhydrophobic(SH)surface,and the superhydrophobic-riblets(SR)surface in an open-surfac
The Knowledge of turbulent flow developing inside and around the bottom trawl net is of great importance not only for improving the hydrodynamic performance of the gear but also for the selectivity via the fish response,such as the herding response or esc
随着国家对水利事业的大量资金投入,各类水利工程项目不断建设,安全、环保、生态以及施工简单的一些新型产品新型施工工艺项目也不断地被应用到水利建设项目上.但在产品设计、施工的环节中难免会出现一些不尽人意之处,需要在不断的探索中总结改进.气盾坝在实际运用中存在一定的优点,在诸多工程中都广泛运用.以武夷山市黄柏溪引调水工程为例,设计了气盾坝结构,通过实际调试运行发现两个问题,即气盾坝盾板与砼侧墙接触面之间存在的气盾坝升塌坝出现的盾板启闭不自如、盾板与侧墙面在升坝状态下产生的渗漏水,在此基础上分析了气盾坝盾板与砼侧