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    Submarine Flows Studied by Second-Moment Closure

    Source: Journal of Engineering Mechanics:;1995:;Volume ( 121 ):;issue: 010
    Author:
    Hamn-Ching Chen
    DOI: 10.1061/(ASCE)0733-9399(1995)121:10(1136)
    Publisher: American Society of Civil Engineers
    Abstract: A multiblock numerical method has been employed for the calculations of viscous flow around two appended submarine configurations used in the DARPA SUBOFF experiments. The method solves Reynolds-averaged Navier-Stokes equations in conjunction with a near-wall second-order Reynolds stress (second-moment) closure model and a two-layer isotropic eddy viscosity model. Comparison of second-moment and two-layer calculations with experimental data clearly demonstrated the significant influence of Reynolds stress anisotropy in the vortex-induced spatial nonuniformity of the propulsor inflow. The second-moment solutions are shown to capture the most important features of submarine flows including the formation and evolution of the appendage root and tip vortices, the development of thick stern boundary layer, and the complex interaction among the horseshoe vortex system and appendage wakes.
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      Submarine Flows Studied by Second-Moment Closure

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    contributor authorHamn-Ching Chen
    date accessioned2017-05-08T22:37:28Z
    date available2017-05-08T22:37:28Z
    date copyrightOctober 1995
    date issued1995
    identifier other%28asce%290733-9399%281995%29121%3A10%281136%29.pdf
    identifier urihttp://yetl.yabesh.ir/yetl/handle/yetl/84144
    description abstractA multiblock numerical method has been employed for the calculations of viscous flow around two appended submarine configurations used in the DARPA SUBOFF experiments. The method solves Reynolds-averaged Navier-Stokes equations in conjunction with a near-wall second-order Reynolds stress (second-moment) closure model and a two-layer isotropic eddy viscosity model. Comparison of second-moment and two-layer calculations with experimental data clearly demonstrated the significant influence of Reynolds stress anisotropy in the vortex-induced spatial nonuniformity of the propulsor inflow. The second-moment solutions are shown to capture the most important features of submarine flows including the formation and evolution of the appendage root and tip vortices, the development of thick stern boundary layer, and the complex interaction among the horseshoe vortex system and appendage wakes.
    publisherAmerican Society of Civil Engineers
    titleSubmarine Flows Studied by Second-Moment Closure
    typeJournal Paper
    journal volume121
    journal issue10
    journal titleJournal of Engineering Mechanics
    identifier doi10.1061/(ASCE)0733-9399(1995)121:10(1136)
    treeJournal of Engineering Mechanics:;1995:;Volume ( 121 ):;issue: 010
    contenttypeFulltext
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