Simulation of Flow Past an Oscillating Triangular Cylinder using Finite Element Method

Abstract

This paper is related to the characteristics, the development and the simulation of a particular fluid-structure interaction phenomenon -- the continuous oscillation of an equilateral triangular cylinder in the uniform incoming flow. We propose the explanation of this oscillation. Preliminary analysis indicates that the cylinder could oscillate incessantly by initial positional perturbation or incoming flow fluctuation. It is the unbalance force acting on the cylinder's side faces that causes such movement. On one side, the flow will be flow-past-flat-plate like, whereas the other side will be flow-past-sharp-edge like. Due to the unbalanced pressure exerting on the two sides, the cylinder rotates. When the cylinder moves, these mechanisms switch side interchangeably, and bring the cylinder to continuous oscillation.

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Document Details

Document Type
Technical Report
Publication Date
Apr 14, 2005
Accession Number
ADA447915

Entities

People

  • Sutthiphong Srigrarom

Organizations

  • Nanyang Technological University

Tags

Communities of Interest

  • Materials and Manufacturing Processes

DTIC Thesaurus Topics

  • Boundaries
  • Coefficients
  • Computational Fluid Dynamics
  • Differential Equations
  • Equations
  • Finite Element Analysis
  • Flow
  • Flow Visualization
  • Fluid Dynamics
  • Fluid Flow
  • Fluid Mechanics
  • Geometry
  • Mechanical Properties
  • Mechanics
  • Production Engineering
  • Reynolds Number
  • Simulations

Fields of Study

  • Mathematics

Readers

  • Atmospheric Science / Meteorology, specifically Wind Wave Turbulence.
  • Control Systems Engineering.
  • Structural Dynamics.