• Direct numerical simulation and large eddy simulation of wind shear effects on non-stratified open channel flow 

      Lashkarbolouk, Hadi; Kirkpatrick, Michael Philip; Williamson, Nicholas; Armfield, Steven William; Lin, Wenxian
      Published 2018
      In this study, direct numerical simulation (DNS) and large eddy simulation (LES) of turbulent channel flow beneath a flat surface with imposed wind shear stress are presented. An open channel with friction Reynolds number ...
      Open Access
      Conference paper
    • Entrainment across a sheared density interface in a cavity flow 

      Williamson, Nicholas; Kirkpatrick, Michael Philip; Armfield, Steven William
      Published 2018
      The entrainment of fluid across a sheared density interface has been examined experimentally in a purging cavity flow. In this flow, a long straight cavity with sloped entry and exit boundaries is located in the base of a ...
      Open Access
      Article
    • Rectangular lattice Boltzmann method using multiple relaxation time collision operator in two and three dimensions 

      Zecevic, Vanja; Kirkpatrick, Michael Philip; Armfield, Steven William
      Published 2020
      We present a lattice Boltzmann (LB) method using a rectangular, non-isotropic lattice based on D2Q9 and D3Q27 velocity sets in two and three dimensions. A second order multi-scale expansion ensures that the scheme correctly ...
      Open Access
      Article
    • Does Upper Airway Deformation Affect Drug Deposition? 

      Cheng, Shaokoon; Kourmatzis, Agisilaos; Mekonnen, Taye; Gholizadeh, Hanieh; Raco, Joel; Tang, Patricia; Chan, Hak-Kim
      Published 2019
      Knowledge that enables the accurate simulation of drug deposition in the human upper airway is necessary to develop robust platforms for efficient drug delivery by inhalation devices. The human upper airway is deformable ...
      Open Access
      Article
    • The effects of upper airway tissue motion on airflow dynamics 

      Zhao, Yongling; Raco, Joel; Kourmatzis, Agisilaos; Diasinos, Sammy; Chan, Hak-Kim; Yang, Runyu; Cheng, Shaokoon
      Published 2019
      The human upper airway is not only geometrically complex, but it can also deform dynamically as a result of active muscle contraction and motility during respiration. How the active transformation of the airway geometry ...
      Open Access
      Article