10 projects
CFD and computational mechanics
Computational fluid dynamics and computational mechanics by Dr Mohammad Ghaffari. Solver development, fluid-structure interaction, adjoint shape optimisation and validation against published benchmarks, from research at UNSW Sydney on immersed boundary lattice Boltzmann methods, flexible and bio-inspired structures and flow control, to industry work on wind turbine blades and thermal equipment.
- Research
Vorticity field around the aerofoil and flaps. Own simulation.
Bio-inspired flaps on an aerofoil
How feather-like flaps change the aerodynamics of an aerofoil. - Research
Vortex structures at one time instance, with and without magnetohydrodynamic forcing. Own simulation. Magnetohydrodynamic control of revolving wings
Using Lorentz forces to hold a leading edge vortex in place. - Research
Vorticity in the periodic and irregular flapping regimes. Own simulation. Unsteady flow through flexible porous media
What happens when the porous structure itself bends in the flow. - Industry
Representative schematic. Not project data.
Turbulent adjoint optimisation framework
A 3-D turbulent adjoint framework for industrial thermal equipment. - Research
Mach number around the baseline and optimised aerofoil at two points of the pitch cycle (left), and the baseline and optimised shapes (right). Own simulation. Adjoint shape optimisation of a pitching aerofoil
Reshaping an oscillating aerofoil with the continuous adjoint method to raise its lift-to-drag ratio at low Reynolds number. - Research
Representative schematic. Not project data.
Immersed boundary lattice Boltzmann solver
The coupled fluid, structure and thermal solver behind the research. - Research
Benchmark set-up, with tip deflection and lift force compared with Turek & Hron (2006). Own simulation. FSI benchmark: elastic beam behind a cylinder
Validating the coupled lattice Boltzmann and finite element solver on the Turek–Hron elastic beam benchmark. - Research
Plate shapes over one flapping cycle at bending rigidity 10⁻³ (left) and 10⁻⁴ (right). Own simulation. FSI benchmark: highly flexible plate in axial flow
Validating the same solver on a very flexible plate flapping in uniform flow. - Industry
Computational mesh: the rotating zone with the three blades (left), and the boundary-layer mesh around the dimple (right). Own simulation. Dimpled blades for a vertical-axis wind turbine
Testing whether a small cavity in each blade raises the power output of a Darrieus wind turbine. - Research
Hybrid unstructured mesh around the ONERA M6 wing (left), and pressure coefficient at 65% span against Schmitt et al (right). Own simulation. Multigrid acceleration of a compressible flow solver
Cutting the run time of a 3D unstructured compressible flow solver with a preconditioned nonlinear multigrid scheme.
Publications from these projects
-
[01]
Numerical investigation of dimple effects on darrieus vertical axis wind turbine
Sobhani, E., Ghaffari, M., Maghrebi, M.J. · 2017
Energy · 133, pp. 231-241
-
[02]
Continuous adjoint shape optimization for low Reynolds number oscillating airfoils in viscous flow on unstructured grids
Ghaffari, M., Tavakoli, A., Pasandideh, M. · 2017
Modares Mechanical Engineering · 17(7), pp. 161-170
-
[03]
Multigrid convergence acceleration of the preconditioned compressible flow equations
Ghaffari, M., Pasandideh, M., Tavakoli, A. · 2016
Journal of Mechanical Engineering, University of Tabriz · 48(1), pp. 271-280
Project: Multigrid acceleration of a compressible flow solver
-
[04]
Effects of bio-inspired flaps on the aerodynamics of an airfoil
Ghaffari, M., Ravi, S., Young, J., Lai, J.C.S., Tian, F.-B. · 2024
Australasian Conference on Particle Approaches and Applications in Fluids (ACPAAF 2024) · Queensland University of Technology, Brisbane, 1 to 2 February 2024 · Oral presentation
-
[05]
Aerodynamics of feathers
Ghaffari, M., Ravi, S., Young, J., Lai, J.C.S., Tian, F.-B. · 2024
UNSW Canberra Early Career Researcher Conference · Canberra, Australia · Oral presentation