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RISAssessment of a Reynolds Stress Closure Model for Appendage-Hull Junction Flows
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: A multiblock numerical method, for the solution of the Reynolds-Averaged Navier-Stokes equations, has been used in conjunction with a near-wall Reynolds stress closure and a two-layer isotropic ...
Submarine Flows Studied by Second-Moment Closure
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 ...
Turbulent Flow Induced by Full-Scale Ship in Harbor
Publisher: American Society of Civil Engineers
Abstract: A chimera Reynolds-averaged Navier-Stokes (RANS) method has been developed for time-domain simulation of transient flow induced by a ship approaching a berthing facility. The method solves the mean flow and turbulence ...
Interactive RANS/Laplace Method for Nonlinear Free Surface Flows
Publisher: American Society of Civil Engineers
Abstract: A hybrid numerical method for the prediction of free surface flows including both nonlinear wave and viscous effects is presented. In this method, a zonal approach that combines a potential flow method for fully nonlinear ...
RANS/Laplace Calculations of Nonlinear Waves Induced by Surface-Piercing Bodies
Publisher: American Society of Civil Engineers
Abstract: An interactive zonal numerical method has been developed for the prediction of free surface flows around surface-piercing bodies, including both viscous and nonlinear wave effects. In this study, a Laplace solver for ...
Three-Dimensional Numerical Simulations of Circular Cylinders Undergoing Two Degree-of-Freedom Vortex-Induced Vibrations
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: In an effort to gain a better understanding of vortex-induced vibrations (VIV), we present three-dimensional numerical simulations of VIV of circular cylinders. We consider operating conditions ...
Optimal Finite Difference Method for Potential Flows
Publisher: American Society of Civil Engineers
Abstract: The optimal finite‐difference (FD) method for two‐dimensional potential flows is studied. The nine‐point FD coefficients for Laplace equations are derived for rectangular cells with an arbitrary length‐to‐width ratio
Flow and Heat Transfer in a Rotating Square Channel With 45 deg Angled Ribs by Reynolds Stress Turbulence Model
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Numerical predictions of three-dimensional flow and heat transfer are presented for a rotating square channel with 45 deg angled ribs as tested by Johnson et al. (1994). The rib height-to-hydraulic ...
Three-Dimensional Numerical Simulations of Flows Past Smooth and Rough/Bare and Helically Straked Circular Cylinders Allowed to Undergo Two Degree-of-Freedom Motions
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: We simulate the flow past smooth and rough rigid circular cylinders that are either bare or outfitted with helical strakes. We consider operating conditions that correspond to high Reynolds ...
Understanding Friction Factor Behavior in Liquid Annular Seals With Deliberately Roughened Surfaces
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Multistage centrifugal pumps and compressors are among the most widely used pieces of rotating machinery in industry. A typical application demands the arrangement of several impellers or wheels ...