University of Illinois Urbana-Champaign

Applications of an immersed boundary method on two-dimensional flows at low Reynolds numbers

Alhussaini, Mohammad Abdullah H

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ALHUSSAINI-THESIS-2023.pdf

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https://hdl.handle.net/2142/122079

Description

Title
Applications of an immersed boundary method on two-dimensional flows at low Reynolds numbers
Author(s)
Alhussaini, Mohammad Abdullah H
Issue Date
2023-12-08
Director of Research (if dissertation) or Advisor (if thesis)
Bodony, Daniel J
Department of Study
Aerospace Engineering
Discipline
Aerospace Engineering
Degree Granting Institution
University of Illinois at Urbana-Champaign
Degree Name
M.S.
Degree Level
Thesis
Keyword(s)
  • immersed boundary method
  • IBM
  • IBPM
  • viscous flow
  • low Reynolds number
Abstract
The goal of this work is to investigate the application of the immersed boundary projection method to moving and deforming bodies using the ViscousFlow numerical package [1]. A brief overview discussing the method is presented. Three cases of verification are performed for a stationary NACA0012 at Re = 1000, a sinusoidally plunging NACA0012 at Re = 1000, and a canonical pitch-hold-return flat plate maneuver at Re = 100. The results of the first and third cases were in rough agreement, while the sinusoidally plunging case captured the general frequency of the solution with a noticeable discrepancy. A deformation case with a NACA 4-digit airfoil changing thickness from NACA0006 to NACA0012 at zero angle of attack was also performed. The airfoil starts as a NACA0006 from convective time t = 0 to 5 /∞, where c is the chord and ∞ the freestream velocity. Then, the linear deformation occurs for t = 5 to 10. At t = 10, the airfoil is a NACA0012 and stays stationary until t = 15. In additional simulations, the effect of changing the deformation duration was changed to have duration times of 5, 3, and 1. This work is intended to serve as a base for future work involving investigating morphing shapes used in flow control.
Graduation Semester
2023-12
Type of Resource
Thesis
Handle URL
https://hdl.handle.net/2142/122079
Copyright and License Information
Copyright 2023 Mohammad Alhussaini

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