Show/Hide Menu
Hide/Show Apps
Logout
Türkçe
Türkçe
Search
Search
Login
Login
OpenMETU
OpenMETU
About
About
Open Science Policy
Open Science Policy
Open Access Guideline
Open Access Guideline
Postgraduate Thesis Guideline
Postgraduate Thesis Guideline
Communities & Collections
Communities & Collections
Help
Help
Frequently Asked Questions
Frequently Asked Questions
Guides
Guides
Thesis submission
Thesis submission
MS without thesis term project submission
MS without thesis term project submission
Publication submission with DOI
Publication submission with DOI
Publication submission
Publication submission
Supporting Information
Supporting Information
General Information
General Information
Copyright, Embargo and License
Copyright, Embargo and License
Contact us
Contact us
Streamwise oscillations of a cylinder beneath a free surface: Free surface effects on fluid forces
Date
2015-11-01
Author
Kocabiyik, Serpil
Bozkaya, Canan
Metadata
Show full item record
This work is licensed under a
Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License
.
Item Usage Stats
227
views
0
downloads
Cite This
A two-dimensional free surface flow past a circular cylinder forced to perform streamwise oscillations in the presence of an oncoming uniform flow is investigated at a Reynolds number of R=200 and fixed displacement amplitude, A=0.13, for the forcing frequency-to-natural shedding frequency ratios, f/f(0) = 1.5, 2.5, 3.5. The present two-fluid model is based on a velocity-pressure formulation of the two-dimensional continuity and unsteady Navier-Stokes equations. The continuity and Navier-Stokes equations are discretized using a finite volume approximation for two fluid regions. An improved volume-of-fluid method is employed to capture for the displacement of the free surface. The objective of this study is to examine the effects of the frequency ratios, f/f(0) = 1.5, 2.5, 3.5, and the cylinder submergence depths, h=0.25, 0.5, 0.75, on the fluid forces at a fixed Froude number of Fr=0.2. The relationship between the changes in the wake dynamics of the cylinder described in Bozkaya et al. (2011) and in the properties of fluid forces is also discussed.
Subject Keywords
Unsteady
,
Viscous incompressible
,
Free surface flow
,
Two-fluid model
,
Submerged oscillating cylinder
,
Fluid forces
URI
https://hdl.handle.net/11511/33115
Journal
JOURNAL OF FLUIDS AND STRUCTURES
DOI
https://doi.org/10.1016/j.jfluidstructs.2015.08.006
Collections
Department of Mathematics, Article
Suggestions
OpenMETU
Core
Free surface flow past a circular cylinder under forced rotary oscillations
Kocabıyık, Serpıl; Bozkaya, Canan; Liverman, E. (null; 2014-07-25)
Numerical results of a viscous incompressible two-fluid model with an oscillating cylinder are analyzed. Specifically, two-dimensional flow past a circular cylinder subject to forced rotational oscillations beneath a free surface is considered. Numerical method is based on the finite volume method for solving the two-dimensional continuity and unsteady NavierStokes equations. The numerical simulations are carried out at a Reynolds number of R = 200 and a Froude number F r = 0.2, and the cylinder submergence...
Free surface wave interaction with an oscillating cylinder
Bozkaya, Canan (2014-01-01)
The numerical solution of the special integral form of two-dimensional continuity and unsteady Navier Stokes equations is used to investigate vortex states of a horizontal cylinder undergoing forced oscillations in free surface water wave. This study aims to examine the consequence of degree of submergence of the cylinder beneath free surface at Froude number 0.4. Calculations are carried out for a single set of oscillation parameters at a Reynolds number of R = 200. Two new locked-on states of vortex forma...
Streamwise oscillations of a cylinder beneath a free surface: Free surface effects on vortex formation modes
Bozkaya, Canan; Mironova, L. A.; Gubanov, O. I. (Elsevier BV, 2011-06-15)
A computational study of a viscous incompressible two-fluid model with an oscillating cylinder is investigated at a Reynolds number of 200 and at a dimensionless displacement amplitude of A = 0.13 and for the dimensionless forcing cylinder oscillation frequency-to-natural vortex shedding frequency ratios, f/f(0) = 1.5, 2.5, 3.5. Specifically, two-dimensional flow past a circular cylinder subject to forced in-line oscillations beneath a free surface is considered. The method is based on a finite volume discr...
Incompressible flow simulations using least squares spectral element method on adaptively refined triangular grids
Akdağ, Osman; Sert, Cüneyt; Department of Mechanical Engineering (2012)
The main purpose of this study is to develop a flow solver that employs triangular grids to solve two-dimensional, viscous, laminar, steady, incompressible flows. The flow solver is based on Least Squares Spectral Element Method (LSSEM). It has p-type adaptive mesh refinement/coarsening capability and supports p-type nonconforming element interfaces. To validate the developed flow solver several benchmark problems are studied and successful results are obtained. The performances of two different triangular ...
Radial basis function and dual reciprocity boundary element solutions of fluid dynamics problems
Gürbüz, Merve; Tezer Sezgin, Münevver; Department of Mathematics (2017)
In this thesis, the two-dimensional, laminar steady or unsteady flow of a viscous, incompressible, electrically conducting fluid is considered in channels of several geometries under the impact of a uniform magnetic field with different orientations. Magnetohydrodynamic (MHD) flow governed by the hydrodynamic and electromagnetic equations is solved numerically with or without Stokes approximation and with or without magnetic induction due to the large or small values of Reynolds and magnetic Reynolds number...
Citation Formats
IEEE
ACM
APA
CHICAGO
MLA
BibTeX
S. Kocabiyik and C. Bozkaya, “Streamwise oscillations of a cylinder beneath a free surface: Free surface effects on fluid forces,”
JOURNAL OF FLUIDS AND STRUCTURES
, pp. 394–405, 2015, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/33115.