Slika omota

A 3-D Viscous Vorticity Model for Predicting Turbulent Flows over Hydrofoils

Spremljeno u:
Izdano u:Journal of Marine Science and Engineering vol. 12, no. 1 (2024), p. 45
Glavni autor: You, Rui
Daljnji autori: Kinnas, Spyros A
Izdano:
MDPI AG
Teme:
Finite volume method
Turbulence
Turbines
Vortices
Applications programs
Hydrofoils
Fluid dynamics
Boundary layers
Turbulent flow
Sea surface
Numerical analysis
Solvers
Three dimensional flow
Computer applications
Shear flow
Reynolds averaged Navier-Stokes method
Efficiency
Vorticity
Simulation
Velocity
Cavitation
Propellers
Partial differential equations
Viscosity
Turbulence models
Three dimensional models
Computational efficiency
Vorticity equations
Computing costs
Software development
Environmental
Online pristup:Citation/Abstract
Full Text + Graphics
Full Text - PDF
Oznake: Dodaj oznaku
Bez oznaka, Budi prvi tko označuje ovaj zapis!
Sažetak:This research addresses the demand for a computationally efficient numerical tool capable of predicting 3-D turbulent flows over 3-D hydrofoils, a critical step in ultimately addressing marine propeller or turbine performance. The related software development and its applications are conducted by employing the vorticity-based approach known as the viscous vorticity equation (VISVE). In particular, an existing 3-D laminar VISVE solver was modified in order to handle 3-D turbulent flow scenarios. The extension incorporates the <inline-formula>k−ω</inline-formula> SST model into the 3-D VISVE solver by using the finite volume method (FVM), thereby broadening its application to turbulent flows. The model was then tested in the case of turbulent flows over 3-D hydrofoils. The results were found to not be sensitive to either grid or time step size and to be in very good agreement with those obtained using a Reynolds-averaged Navier–Stokes (RANS) solver. This solver offers distinct advantages, including a significantly reduced computational domain size and reduced computational costs through its vorticity-based approach. Notably, turbulence concentration within boundary layers and free shear flows does not compromise the method’s computational efficiency. The simplified meshing process, which automatically generates the grids based on the number of panels on the hydrofoil, enhances accessibility for researchers and engineers.
ISSN:2077-1312
Digitalni identifikator objekta:10.3390/jmse12010045
Izvor:Engineering Database