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Assessment of Cavitation Erosion With a URANS Method
Journal of Fluids Engineering, Transactions of the ASME, 2014An assessment of the cavitation erosion risk by using a contemporary unsteady Reynolds-averaged Navier–Stokes (URANS) method in conjunction with a newly developed postprocessing procedure is made for an NACA0015 hydrofoil and an NACA0018-45 hydrofoil, without the necessity to compute the details of the actual collapses. This procedure is developed from
Zi-ru Li +2 more
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Applied Ocean Research, 2019
Abstract Surface Piercing Propellers (SPPs) are a particular kind of propellers which are partially submerged operating at the interface of air and water. They are more efficient than submerged propellers for the propulsion system of high-speed crafts because of larger propeller diameter, replacing cavitation with ventilation, decreasing the torque ...
Hamid Zeraatgar
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Abstract Surface Piercing Propellers (SPPs) are a particular kind of propellers which are partially submerged operating at the interface of air and water. They are more efficient than submerged propellers for the propulsion system of high-speed crafts because of larger propeller diameter, replacing cavitation with ventilation, decreasing the torque ...
Hamid Zeraatgar
exaly +2 more sources
Development of hybrid URANS–LES methods for flow simulation in the ship stern area
Ocean Engineering, 2011Abstract The paper presents the results of the application of a new hybrid URANS–LES method for the investigations of the ship wake behind the tanker KVLCC2. The switching between URANS and LES models is based on the ratio between the turbulence scale and the cell size of the mesh.
Nikolai Kornev, E Shchukin
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Aerospace Science and Technology, 2018
Abstract A scramjet combustor is simulated using both a hybrid Reynolds averaged Navier–Stokes (RANS)/large eddy simulation (LES) method, namely zonal detached eddy simulation (ZDES), and unsteady RANS (URANS) method to conduct an assessment of their abilities in depicting the unsteady motions of flow structures in the scramjet combustor.
Ye Tian, Fuyu Zhong, Jialing Le
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Abstract A scramjet combustor is simulated using both a hybrid Reynolds averaged Navier–Stokes (RANS)/large eddy simulation (LES) method, namely zonal detached eddy simulation (ZDES), and unsteady RANS (URANS) method to conduct an assessment of their abilities in depicting the unsteady motions of flow structures in the scramjet combustor.
Ye Tian, Fuyu Zhong, Jialing Le
exaly +2 more sources
Unsteady methods (URANS and LES) for simulation of combustion systems
International Journal of Thermal Sciences, 2006A great variety of flows in practical engineering applications are inherently unsteady, and virtually all of Newtonian fluid flows in nature are turbulent. In order to better capture the dynamics of such complex flows, it is appropriate to use unsteady methods. The present overview is confined to single-phase turbulent flows. The first part provides an
A. Sadiki +5 more
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Evaluation of Propeller Virtual Mass and Damping Coefficients by URANS- Method
2015The virtual mass and damping coefficients of a rotating propeller are determined using URANS computations. Time-accurate simulations are carried out for an open propeller forced to harmonic motion in two separate directions, translational x1- and rotational x4-directions.
Sánchez-Caja, Antonio +3 more
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Ship Technology Research, 2016
In this paper, results of computations of unsteady wake and unsteady loadings on marine propellers behind KVLCC2 tanker under different drift angles and yaw rates are presented and analysed. Hybrid unsteady Reynolds averaged equations-large eddy simulations (URANS-LES) presented in [Kornev, N., Taranov, A., Shchukin, E. and Kleinsorge, L.
N. Abbas, N. Kornev
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In this paper, results of computations of unsteady wake and unsteady loadings on marine propellers behind KVLCC2 tanker under different drift angles and yaw rates are presented and analysed. Hybrid unsteady Reynolds averaged equations-large eddy simulations (URANS-LES) presented in [Kornev, N., Taranov, A., Shchukin, E. and Kleinsorge, L.
N. Abbas, N. Kornev
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High Order Interpolation Methods and Related URANS Schemes on Composite Ggrids
48th AIAA Aerospace Sciences Meeting Including the New Horizons Forum and Aerospace Exposition, 2010This paper deals with high order interpolation methods and related URANS schemes under development at the CFD and Aerocaoustics Department of Onera, both in the context of Finite Volume and Discontinuous Galerkin methods, i.e. high order interpolants on respectively wide stencils and low number of degrees on freedom (collocated cell centered FV) and ...
Jean-Marie Le Gouez +2 more
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Seakeeping Analysis of a Wave-Piercing Catamaran Using URANS-Based Method
International Journal of Offshore and Polar Engineering, 2016Wave-piercing catamarans (WPCs) consist of two demihulls with wave-piercing bows that may immerse into or emerge out of the free surface when advancing in waves. Therefore, it is questionable whether linear theories like modified strip theory (STF) can precisely predict the seakeeping performance of WPCs in general cases.
Zhiqun Guo, Qingwei Ma, Xiaofeng Hu
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