Showing 1 - 20 results of 69 for search '"vorticity"', query time: 0.05s Refine Results
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    Wave-induced longitudinal vortices in a shallow current by Huang, Zhenhua, Mei, Chiang C.

    Published 2012
    “…An instability theory is presented for the initiation of longitudinal vortices due to waves interacting with a turbulent current in an open channel of finite depth. …”
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    Journal Article
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    Relativistic superfluidity and vorticity from the nonlinear Klein-Gordon equation by Xiong, Chi, Good, Michael R. R., Guo, Yulong, Liu, Xiaopei, Huang, Kerson

    Published 2015
    “…We investigate superfluidity, and the mechanism for creation of quantized vortices, in the relativistic regime. The general framework is a nonlinear Klein-Gordon equation in curved spacetime for a complex scalar field, whose phase dynamics gives rise to superfluidity. …”
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    Journal Article
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    A sharp immersed method for 2D flow-body interactions using the vorticity-velocity Navier-Stokes equations by Ji, Xinjie, Gabbard, James, van Rees, Wim M.

    Published 2024
    “…First, we develop and analyze a moving boundary treatment for sharp immersed methods that can be applied to PDEs with implicitly defined boundary conditions, such as those commonly imposed on the vorticity field. Second, we develop a two-way coupling methodology for the vorticity-velocity Navier-Stokes equations based on control-volume momentum balance that does not require the pressure field. …”
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    Article
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    Bursting on a vortex tube with initial axial core-size perturbations by Ji, Lingbo, Van Rees, Wim M.

    Published 2024
    “…The initial variations in the core size are associated with axial gradients in the azimuthal velocity, which generates azimuthal vorticity. This azimuthal vorticity propagates as twist waves in the axial direction. …”
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    Article
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    Experimental studies of two-stream mixing flows with vortex-generating tabs by Koh, Pak Keng.

    Published 2008
    “…Attempts were also made to quantify the effect of each (streamwise vorticity) production term in the streamwise vorticity dynamics equation.…”
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    Thesis
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    Simulation of suppression of vortex breakdown over delta wings by vortex filament method by Lewpiriyawong Nuttawut.

    Published 2008
    “…This study focuses on three-dimensional evolution of unperturbed and perturbed leading-edge vortices over delta wings. Since the vortex filament method can discretize the high vorticity-containing region of vorticity fields and track this discretization in a Lagrangian frame, it is chosen to simulate the core of the leading-edge vortices. …”
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    Thesis
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    An investigation of finite wings with leading edge protuberances by Gan, Christopher De Hao

    Published 2017
    “…These vortex pairs appear to drift apart from one another, subsequently interacting with adjacent vortices at the troughs and becoming unstable. This is confirmed by the streamline and mean vorticity plots further downstream on the airfoil. …”
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    Final Year Project (FYP)
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    Instabilities in tidal turbine wakes by Smyth, ASM, Nishino, T, Young, AM

    Published 2023
    “…Unsteady inflow causes the turbine blades to shed vorticity of time-varying strength into the wake, which in turn leads to a spatial variation in wake vortex strength, such that the vorticity of adjacent returning wake segments can differ. …”
    Conference item
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    Oscillating foils of high propulsive efficiency by Anderson, J. M., Streitlien, K., Barrett, D.S., Triantafyllou, M.S.

    Published 2005
    “…The experimental results are compared with theoretical predictions of linear and nonlinear inviscid theory and it is found that agreement between theory and experiment is good over a certain parametric range, when the wake consists of an array of alternating vortices and either very weak or no leading-edge vortices form. …”
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    Article
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    Investigation of flow in an axially rotating flow field by Tang, Sui Ping.

    Published 2009
    “…The Navier-Stokes equations within a rotating frame are derived based on vorticity-stream function formulation. To represent the effects of turbulence, the k-s model combined with the wall function method is used. …”
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    Thesis
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    Contribution of Mach number to the evolution of the Richtmyer-Meshkov instability induced by a shock-accelerated square light bubble by Singh, Satyvir

    Published 2022
    “…The effects of Mach numbers are explored in detail through phenomena such as the vorticity generation, and evolutions of enstrophy as well as dissipation rate. …”
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    Journal Article
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    Computation fluid dynamics on drag reduction II by Zang, Bin

    Published 2011
    “…Five RANS turbulence models: Spalart-Allmaras (Vorticity-based production); Spalart-Allmaras (Strain / Vorticity-based production); k-ε Standard (Enhanced Wall Treatment); k-ε Realizable (Enhanced Wall Treatment) and k-ω Standard (Shear Flow Correction), are chosen after comparing with DNS data published by Moser et al (1999). [20] Subsequently, the single and multiple dimpled channel flows are modeled and simulated by the five RANS models chosen in the verification stage with periodic boundary condition, a Reynolds number of 20000, and a three-dimensional channel of L = 1.5 m, B = 0.454 m and H = 1 m. …”
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    Final Year Project (FYP)