Dr. Samir Ziada

Professor

McMaster University
Department of Mechanical Engineering
Hamilton, Ontario, Canada L8S 4L7

Office: JHE 309 (Mail to JHE-310)
Email:
Voice: (905) 525-9140 x27530


  • B.Sc., Cairo University, 1972
    M.Eng., McMaster University, 1977
    Ph.D., Lehigh University, Pennsylvania, 1981

Research Interests

  • Flow induced vibrations & noise
  • Aeroacoustics
  • Turbulent flows

Specific Research Activities

While I was working as a group leader in the Research Laboratory of Sulzer Technology Corporation (Switzerland), my research work dealt primarily with industrial problems involving fluid-structural-sound interaction mechanisms and means of their active/passive control in a wide range of products. My current research interests at McMaster remain essentially interdisciplinary, covering the fields of unsteady flows, aeroacoustics, active flow control and flow-sound-structure interaction.

Fluid flows in many engineering applications are inherently unstable. These instabilities can be strongly enhanced if they interact with wall movements resulting from structural vibrations, or sound waves generated by acoustic resonances. The outcome of such interaction is often strong pressure pulsations, dangerous vibrations and/or intolerable noise levels. These have negative effects on the efficiency, the safety and the environment of many industrial  processes. However, flow instabilities can also produce very beneficial effects such as enhanced mixing, thermal diffusion and heat transfer. Thus, it is very desirable to develop active and passive control methods to stabilize the flow, in order to eliminate harmful effects, or to destabilize the flow to promote beneficial changes. This requires good understanding of the basic interaction mechanisms between unstable flows, structural movements and sound waves.

Currently, the following projects are in progress:

  • Active control of large eddies (vortex shedding) in wakes of bluff bodies, free jets and shear layers.
  • Control of flow-excited acoustic resonances.
  • Aeroacoustics of shallow and deep cavities exposed to grazing flow.
  • Flow-induced vibration and noise in heat exchanger tube bundles.
  • Flow-excited acoustic resonances in piping systems.
  • Vibrations of spring loaded plate valves (which are widely used in piston compressors).
  • Vortex shedding from finned tubes.
  • Reduction of the interior noise environment of future automobiles.
  • More recently, I initiated and currently supervising several projects in the area of biomechanics.


Awards

  • Premier’s Research Excellence Award 1999 to 2003, granted by the Ministry of Energy, Science and Technology.
  • Merit Award for Excellence in Teaching 2000, granted by McMaster Students Union


Selected Publications

  • Mohany, A., Arthurs, D., Bolduc, M., Hassan, M. & Ziada, S. 2013 “Numerical and experimental investigation of flow-acoustic resonance of side-by-side cylinders in a duct”, Journal of Fluids & Structures (Accepted with revisions).
  • Arthurs, D. & Ziada, S. 2013 “Development of a Feedback Model for the High-Speed Impinging Planar Jet”, Experiments in Fluids (in print).
  • Bolduc, M., Elsayed, M. & Ziada, S. 2013 “Passive control of trapped mode resonance of ducted cavities”, Journal of Pressure Vessel Technology (accepted).
  • Arthurs, D., Bolduc, M., Ritcey, A. & Ziada, S. 2013 “Flow-sound interaction mechanisms in the wake of two side-by-side cylinders”, International Journal of Aeroacoustics (in press).
  • Arthurs, D. & Ziada, S. 2014 “Effect of nozzle thickness on the self-excited impinging planar jet”, Journal of Fluids & Structures 44, 1–16
  • Khalifa, A., Weaver, D. & Ziada, S. 2014 “Modeling of the phase lag causing fluidelastic instability in a parallel triangular tube array”, Journal of Fluids and Structures 43, 371-384.
  • Khalifa, A., Weaver, D. & Ziada, S. 2013 “An experimental study of the interaction between tube vibration and the associated flow perturbation in tube arrays”, Journal of Pressure Vessel Technology 135(3), 030904 (9 pages).
  • Ziada, S. & Lafon, P. 2013 “Flow-excited acoustic resonance: Excitation mechanism, design guidelines and counter-measures”, Applied Mechanics Review 66, 011002 (22 pages).
  • Khalifa, A., Weaver, D. & Ziada, S. 2012 “A single flexible tube in a rigid array as a model for fluid-elastic instability in tube bundles”, Journal of Fluids & Structures 34, 14-32.
  • Arthurs, D. & Ziada, S. 2012 “Self-excited oscillations of a high-speed impinging planar jet”, Journal of Fluids & Structures 34, 236-258.
  • Aly, K. & Ziada, S. 2012 “Effect of mean flow on the trapped modes of internal cavities”, Journal of Fluids and Structures 33, 70-84.
  • McLaren, K., Tullis, S. & Ziada, S. 2012 “Measurement of high solidity vertical axis wind turbine aerodynamic loads under high vibration response conditions”, Journal of Fluids & Structures 32, 12-26.
  • Arthurs, D., Ziada, S., & Goodwin, F. 2012 “Noise generation by the gas wiping jets of continuous galvanizing lines”, Journal of Fluids & Thermal Sciences 1, 85-129.
  • Tonon, D., Hirschberg, A., Golliard, J. & Ziada, S. 2011 “Aeroacoustics of pipe systems with closed branches”, International Journal of Aeroacoustics 10(2), 201–276.
  • Mohany, A. & Ziada S. 2011 "Measurements of the dynamic lift force acting on a circular cylinder in cross-flow and exposed to acoustic resonance", Journal of Fluids and Structures 27, 1149-1164.
  • Aly, K. & Ziada, S. 2011 "Azimuthal behaviour of flow-excited diametral modes of internal shallow cavities", Journal of Sound & Vibrations 330, 3666-3683.
  • Hanson, R. & Ziada, S. 2011 “Effect of acoustic resonance on the dynamic lift of tube arrays”, Journal of Fluids and Structures 27, 367-382.
  • Eid, M. & Ziada, S. 2011 “Vortex shedding and acoustic resonance of single and tandem finned cylinders”, Journal of Fluids and Structures, 27, 1035-1048.
  • McLaren, K., Tullis, S. & Ziada, S. 2011 “CFD simulation of the of the aerodynamics of a high solidity, small-scale vertical axis wind turbine”, Wind Energy 15(3), 349-361.
  • Arthurs, D. & Ziada, S. 2011 “The planar jet-plate oscillator”, Journal of Fluids and Structures 27, 105-120.
  • Finnegan, S.L., Meskell, C. & Ziada, S. 2010 “Experimental investigation of the aeroacoustic sources in a tandem cylinder configuration”, ASME Journal of Pressure Vessel Technology 132, 041306, 12 pages.
  • Graf, H.R. & Ziada, S. 2010 “Excitation source of a side-branch shear layer”, Journal of Sound and Vibration 329, 2825–2842.
  • Ziada, S. 2010 “Flow-excited acoustic resonance in industry”, Journal of Pressure Vessel Technology 132, 015001.
  • Aly, K. & Ziada, S. 2010 “Flow-excited resonance of trapped modes of ducted shallow cavities”, Journal of Fluids and Structures 26, 92–120.
  • Ziada, S., McLaren, K. & Li, Y. 2009 “Flow-acoustic coupling in T-Junctions: Effect of T-junction geometry”, ASME Journal of Pressure Vessel Technology 131, 041302-14.
  • Mohany, A. & Ziada, S. 2009 “Numerical simulation of the flow-sound interaction mechanisms of a single and two tandem cylinders in cross-flow”, ASME Journal of Pressure Vessel Technology 131, 031306-11 Pages.
  • Mohany, A. & Ziada, S. 2009 “Effect of acoustic resonance on the dynamic lift forces acting on two tandem cylinders in cross-flow”, Journal of Fluids & Structures 25, 461-4778.
  • Hashemi, A., Bednar, D., Ziada, S. 2009 “Pull-out strength of pedicle screws augmented with particulate calcium phosphate: An experimental study”, Spine J. 9 (5), 404-410.
  • Hanson, R., Mohany, A. & Ziada, S. 2009 “Flow-excited acoustic resonance of two side-by-side cylinders in cross-flow”, Journal of Fluids & Structures 25, 80-94.
  • Arthurs, D. & Ziada, S. 2009 “Flow-induced acoustic resonance of coaxial side-branches in an annular duct”, Journal of Fluids & Structures 25, 42-59.
  • Mohany, A. & Ziada, S. 2009 “A Parametric study of the resonance mechanism of two tandem cylinders in cross-flow”, Journal of Pressure Vessel Technology, Vol. 131, 021302- 9 pages.
  • Mohany, A. & Ziada, S. 2008 “Effect of flow-sound interaction on the dynamic lift force of a single cylinder in cross-flow”, Dynamics of Continuous, Discrete and Impulsive Systems, Series B, Vol. 14, 1-18.
  • Leone, J., Johnson, A., Ziada, S., Adili, A., Hashemi, A. & deBeer, J. 2008 “A biaxial flexural testing protocol to determine the elastic modulus of antibiotic-impregnated orthopaedic bone cement”, Journal of Biomedical Material Research, Part B: Applied Biomaterials 83, 97-104.
  • Ziada, S., Scott, A. & Arthurs, D. 2007 “Acoustic excitation by flow in T-Junctions”, ASME Journal of Pressure Vessel technology 129, 14-20.
  • Ziada, S. 2006 “Vorticity shedding and acoustic resonance of tube bundles”, Journal of the Brazilian Society of Mech. Sci. & Eng. 28, 186-199.
  • Abdou, S. & Ziada, S. 2006 “Spanwise characteristics of high aspect ratio synthetic jets”, AIAA Journal 44(7), 1516-1523.
  • Mohany, A. & Ziada, S. 2005 “Vortex shedding and acoustic resonance of two tandem cylinders in cross-flow”, Journal of Fluids and structures 21, 103-119.
  • Ziada, S., Jebodhsingh, D., Weaver, D.S. & Eisinger, F. 2005 “The effect of fins on vortex shedding from a cylinder in cross-flow”, Journal of Fluids and structures 21, 689-705.
  • Ziada, S., Naczynski, E. & Veldhuis, S. 2005 “Detection of obstructions in automotive manifolds by aeroacoustic means”, ASE  2004 Transactions, 400-406.
  • Jebodhsingh, D., Ziada, S., Weaver, D.S. & Eisinger, F. 2003 "The effect of fins on vortex shedding from a cylinder in cross-flow", (Submitted).
  • Ziada, S. 2003 "Control of fluid-structure-sound interaction mechanisms by means of synthetic jets", International Journal of JSME, Series C, Vol. 46(3), 873-880.
  • Hall, J.W., Ziada, S. & Weaver, D.S. 2003 "The effect of applied sound on vortex shedding from two tandem cylinders", Journal of Fluids and Structures 18 (in press).
  • Ziada, S., Ng, H. & Blake, C. 2003 "Flow-excited resonance of a confined shallow cavity in low Mach number flow and its control". Journal of Fluids and structures 18, 79-92.
  • Wolfe, D. & Ziada, S. 2003 "Feedback control of vortex shedding from two tandem cylinders", Journal of Fluids and Structures 17, 579-592.
  • Ziada, S. 2002 "Active stabilization of a planar jet impinging on a flexible wedge", Journal of Fluids and structures 16, 613-626.
  • Ziada, S. Oengoeren, A. & Vogel, A. 2002 "Acoustic resonance in the inlet scroll of a turbo-compressor", Journal of Fluids and structures 16, 361-373.
  • Michaud, S., Ziada, S. & Pastorel, H. 2001 "Acoustic fatigue of a steam dump pipe system excited by valve noise", Journal of Pressure Vessels Technology 123, 461-468.
  • Ziada, S. 2001 "Interaction of a jet-slot oscillator with a deep cavity resonator and its control". Journal of Fluids and structures 15, 831-843.
  • Weaver, D.S., Ziada, S., Sun, Z. & Feenstra, P. 2001 "the effect of platen fins on the flow-induced vibration of an in-line tube array", Journal of Pressure vessel Technology 123, 437-441.
  • Ziada, S., Sperling, H. & Fisker, L. 2001 "Vibration of a high-pressure piping system due to flow in a spherical elbow". Journal of Fluids and Structures 15, 751-767.
  • Ziada, S. & Staubli, T. 2000 "Flow-Induced Vibrations", Balkema, Rotterdam.
  • Weaver, D. S., Ziada, S., Au-Yang, M.K. Chen, S.S., Paidoussis, M. P., Pettigrew, M. J. 2000 "Flow-induced vibrations in power and process plant components - Progress and prospects". Journal of Pressure Vessel Technology 122, 339-348.
  • Ziada, S. & Oengoeren, A. 2000 "Flow periodicity and acoustic resonance in parallel triangle tube bundles", Journal of Fluids and Structures 14, 197-219.
  • Zhang, Z. & Ziada, S. 2000 "PDA measurements of droplet size and mass flux in the three-dimensional atomization region of water jet in air cross flow", Experiments in Fluids 28, 29-35.
  • Ziada, S. 1999 "Invited paper - Feedback control of global flow oscillations". Engineering Mechanics 6,
    338-354.
  • Ziada, S. & Shine, S., 1999 "Strouhal numbers of flow-excited acoustic resonance in side-branches". Journal of Fluids and Structures 13, 1-16.
  • Ziada, S. & Graf. H. R. 1998 "Active feedback control of combustion oscillations". Journal of Fluids and Structures 12, 491-507.
  • Ziada, S. Oengoeren, A. & Vogel, H. H., 1998 "Acoustic resonance in the combustion conduits of a steam locomotive". Journal of Fluids and Structures 12, 409-420.
  • Ziada, S., 1993 "A flow visualization study of flow-acoustic coupling at the mouth of a resonant side-branch". Journal of Fluids and Structures 8, 391-416.
  • Ziada, S. & Oengoeren, A., 1992 "Vorticity shedding and acoustic resonance in an in-line tube bundle - Part I: Vorticity shedding". Journal of Fluids and Structures 6, 271-292.
  • Oengoeren, A. & Ziada, S., 1992 "Vorticity shedding and acoustic resonance in an in-line tube bundle - Part II: Acoustic resonance. Journal of Fluids and Structures 6, 293-309.
  • Ziada, S., Buehlmann, E. T. & Bolleter, U., 1989 "Flow impingement as an excitation source in control valves". Journal of Fluids and Structures 3, 529-549.
  • Ziada, S., Buehlmann, E. T. & Bolleter, U., 1988 "Model tests on shell flutter due to flow on both sides". Journal of Fluids and Structures 2, 177-196.
  • Ziada, S. & Rockwell, D., 1983 "Subharmonic oscillations of a mixing layer-wedge system associated with free surface effects". Journal of Sound and Vibrations 87, 483-449.
  • Ziada, S. & Rockwell D., 1982 "Vortex-leading-edge interactions". Journal of Fluid Mechanics 118, 79-107.
  • Ziada, S. & Rockwell D., 1982 "Generation of higher harmonics in a self-oscilllating mixing layer-wedge system". AIAA Journal 20 (2), 196-202.
  • Ziada, S. & Rockwell, D., 1982 "Oscillations of an unstable mixing layer impinging upon an edge". Journal of Fluid Mechanics 124, 307-334.