Hemmati, Arman

Profile

Keywords:

Fluid Dynamics, Turbulence, Wakes, Flow, Energy Systems, Renewable Energy, Emissions Reduction Technology

I completed my B.Sc. in Mechanical Engineering at the University of Calgary with an emphasis on aerodynamics and alternative energy systems in 2011. Following my undergraduate studies, I started working on my doctoral thesis under the supervision of Prof. David Wood at the University of Calgary. My doctoral thesis focused on Direct Numerical Simulation (DNS) and Large Eddy Simulation (LES) of the wake of sharp-edge flat bodies representing wind loads on Photovoltaic (PV) modules. This study looked at the fundamentals of the formation and interaction of vortex structures in the wake of flat panels at high angles of attack, and evaluated the implications of vortex dynamics on surface pressure variations and aerodynamic force fluctuations. I also worked on several experimental and numerical studies related to wind turbine tail fins, insect flight aerodynamics, vehicle aerodynamics and wind engineering. Upon completion of my PhD, I joined the Gas Dynamics Laboratory at Princeton University as a Post-Doctoral Research Fellow to work with Prof. Lex Smits. My research at Princeton focused on the development of the next generation of propulsors with higher efficiency and thrust than conventional systems using inspiration from fish. In collaboration with biologists at partnering universities, I used IBM integrated to DNS to investigate the hydrodynamics of various tail fin shapes, oscillatory motions and their implications on the performance of propulsors and energy extractors. This project, and my collaboration with the Gas Dynamics Laboratory, is ongoing with the objective of preparing a realistic high performance energy extractor prototype.

FES Funded Projects

Outputs

Title	Category	Date	Authors
Performance of Overset Mesh in Modeling Generic Wakes for Underwater SwimmingT14-Q01, T11-Q01 University of Alberta	Publication	2019-11-01	Verma, S., Hemmati, A.
Performance of Overset Mesh in Modelling Generic Wakes of sharp-edge bodiesT14-Q01 University of Alberta	Publication	2019-01-01	Verma, S., Hemmati, A.
Secondary spanwise structures in the wake of oscillating foilsT14-Q01 University of Alberta	Publication	2020-10-01	Verma, S., Hemmati, A.
Asymmetry in wake of oscillating foils with combined pitching and heaving motionT14-Q01 University of Alberta	Publication	2020-09-01	Verma, S., Hemmati, A.
Microscale Underwater Energy HarvestingT14-Q01 University of Alberta	Activity	2020-03-01	Verma, S., Hemmati, A.
Characterization of bifurcated dipole vortex streets in the wake of an oscillating foilT14-Q01 University of Alberta	Publication	2020-01-01	Verma, S., Hemmati, A.
Response of turbulent pipe flow to targeted wall shapes at a range of Reynolds numbersT11-Q01 University of Alberta	Publication	2021-06-02	Mehran Masoumifar, Verma, S., Hemmati, A.
The Response of Modified Turbulent Pipe-Flow Targeting Distinct Fourier Modes at a Range of Reynolds Numbers.T11-Q01 University of Alberta	Publication	2020-11-01	Mehran Masoumifar, Verma, S., Hemmati, A.
Scaling the performance of hydrofoils with combined pitching and heaving motion in underwater swimmingT14-Q01 University of Alberta	Publication	2020-11-01	B Freeman, Verma, S., Hemmati, A.
Three-dimensional unsteady wake dynamics of hydrofoils with combined pitching and heaving motionsT14-Q01 University of Alberta	Publication	2020-11-01	Verma, S., Hemmati, A.
On the performance scaling of oscillating foils with combined heaving and pitching motionsT14-Q01 University of Alberta	Publication	2021-01-01	Verma, S., Freeman B, Hemmati, A.
Three-dimensional instability in the wake of oscillating foils with combined heaving and pitchingT14-Q01 University of Alberta	Publication	2021-01-01	Verma, S., Hemmati, A.
The recovery of turbulent pipeflow dynamics depend on the targeted wall geometries at high Reynolds numberT11-Q01 University of Alberta	Publication	2021-01-01	Mehran Masoumifar, Verma, S., Hemmati, A.
Performance of Turbulence models in modeling pipe flow with small perturbations at a range of Reynolds numbersT11-Q01 University of Alberta	Publication	2021-01-01	Mehran Masoumifar, Verma, S., Hemmati, A.
Evolution of vortex structures in the wake of oscillating foils with multi-degree motion	Publication	2021-10-05	Verma, S.
Why do anguilliform swimmers perform undulation with wavelengths shorter than their bodylengths?T14-Q01 University of Alberta	Publication	2021-01-01	Muhammad Saif Ullah Khalid, "Junshi Wang", "Imran Akhtar", "Haibo Dong", "Moubin Liu", Hemmati, A.
Larger wavelengths suit the hydrodynamics of carangiform swimmersT14-Q01 University of Alberta	Publication	2021-01-01	Muhammad Saif Ullah Khalid, "Junshi Wang", "Imran Akhtar", "Haibo Dong", "Moubin Liu", Hemmati, A.
Enhanced performance of two-staged vertical axis wind turbines based on bioinspiration from fish schoolT14-Q01 University of Alberta	Publication	2021-01-01	Muhammad Saif Ullah Khalid, Wood D, Hemmati, A.
The implications of separation distance and phase angle on wake dynamics of parallel pitching foilsT14-Q01 University of Alberta	Publication	2021-01-01	Ahmet Gungor, Muhammad Saif Ullah Khalid, Hemmati, A.
Implicationsof the trailing edge on swimming performance of Heaving panelsT14-Q01 University of Alberta	Publication	2019-01-01	A Tarokh, Hemmati, A.
The propulsive performance of side-by-side foils at a range of Re and StT14-Q01 University of Alberta	Publication	2019-11-01	Ahmet Gungor, Hemmati, A.
The evolution of large-scale structures in the wake of oscillating teardrop foilsT14-Q01 University of Alberta	Publication	2018-11-01	A Tarokh, Hemmati, A., Smits A
The effect of Strouhal number and Reynolds number on the wake of pitching panels in underwater swimmingT14-Q01 University of Alberta	Publication	2018-09-01	A Tarokh, Hemmati, A., Smits A
Wake structures and propulsive performance in heaving panels with a small aspect ratioT14-Q01 University of Alberta	Publication	2019-01-01	A Tarokh, Hemmati, A.
Implications of reduced frequency on wake structure of tandem in-line foilsT14-Q01 University of Alberta	Publication	2019-01-01	E Simsek, Senturk U, Hemmati, A.
The effect of pitching frequency on the hydrodynamics of oscillating foilsT14-Q01 University of Alberta	Publication	2019-08-31	Hemmati, A., Smits A
The effect of single dielectric barrier discharge actuators in controlling flow over an Ahmed body	Publication	2020-12-15	S Karimi, Arash Zargar, Hemmati, A., "M Mani"
The scaling of propulsive performance of tandem pitching foils in side-by-side configurationT14-Q01 University of Alberta	Publication	2019-01-01	Ahmet Gungor, Hemmati, A.
Reynolds number effects on the wake structures of pitching panels of small aspect ratioT14-Q01 University of Alberta	Publication	2019-01-01	Hemmati, A., A J Smits
Effects of trailing edge shape on vortex formation by pitching panels of small aspect ratioT14-Q01 University of Alberta	Publication	2019-01-01	Hemmati, A., T Buren Van, A J Smits
Wake symmetry and its effect on wake swimming synchronizationT14-Q01 University of Alberta	Publication	2020-10-01	Ahmet Gungor, Hemmati, A.
Unsteadiness in the wake of a long wall-mounted cylinder at high angles of incident	Publication	2020-09-01	Arash Zargar, Hemmati, A.
Benchmark Study of RANS Turbulence Modeling of Pipeflow Past Square Bar RoughnessT11-Q01 University of Alberta	Publication	2021-01-11	Shubham Goswami, Hemmati, A.
Can we use the swimming habits of fish for energy harvesting in rivers?T14-Q01 University of Alberta	Activity	2020-03-01	Ahmet Gungor, Hemmati, A.
Mid-cycle phase variations lead to higher stability in swimming fish with side-by-side configurationT14-Q01 University of Alberta	Publication	2020-01-01	Ahmet Gungor, Hemmati, A.
The effect of multiple square bar roughness in reducing drag in pipeflow at high Reynolds numbersT11-Q01 University of Alberta	Publication	2020-01-01	Shubham Goswami, A J Smits, Hemmati, A.
The implications of two outlet boundary conditions on blood flow simulations in normal aorta of pediatric subjectsT14-Q01 University of Alberta	Publication	2020-01-01	Y Jia, Noga M, Punithkumar K, Hemmati, A.
The wake symmetry behind tandem side-by-side foilsT14-Q01 University of Alberta	Publication	2020-01-01	Ahmet Gungor, Hemmati, A.
The wake transitions to unsteadiness at moderate yaw angles for long-rectangular cylindersT14-Q01 University of Alberta	Publication	2020-01-01	Arash Zargar, Ahmet Gungor, Tarokh A, Hemmati, A.
Non-Newtonian effects in pipeflow with square bar roughness at moderate Reynolds numbersT11-Q01 University of Alberta	Publication	2020-01-01	Shubham Goswami, Hemmati, A.
The effect of depth-ratio on the wake of long-rectangular cylindersT11-Q01 University of Alberta	Publication	2020-01-01	Arash Zargar, Tarokh A, Hemmati, A.
Coherent structures in the wake of a large depth-ratio wall-mounted rectangular cylinder at high incidence anglesT14-Q01 University of Alberta	Publication	2020-11-01	Arash Zargar, Hemmati, A.
Recovery of viscoelastic turbulent pipeflow past square bar roughnessT11-Q01 University of Alberta	Publication	2020-11-01	Shubham Goswami, Hemmati, A.
Transition in the wake symmetry of tandem side-by-side oscillating foils.T14-Q01 University of Alberta	Publication	2020-11-01	Ahmet Gungor, Hemmati, A.
Evolution of turbulent pipe flow recovery over a square bar roughness element at a range of Reynolds numbersT11-Q01 University of Alberta	Publication	2021-01-01	Shubham Goswami, Hemmati, A.
The wake topology of a wall-mounted long cylinder at low Reynolds numbers.T14-Q01 University of Alberta	Publication	2021-01-01	Arash Zargar, Tarokh A, Hemmati, A.
How are the wake dynamics altered by abrupt changes to the oscillation phase angle?T14-Q01 University of Alberta	Publication	2021-01-01	Ahmet Gungor, Hemmati, A.
The evolution of secondary structures in the presence of interacting wakes: tandem side-by-side foilsT14-Q01 University of Alberta	Publication	2021-01-01	Ahmet Gungor, Hemmati, A.
The secondary instability in the oblique wake of a large-depth-ratio prismT14-Q01 University of Alberta	Publication	2021-01-01	Arash Zargar, Hemmati, A.
Climate Change, Technology and Policy	Activity	2020-07-08	Hemmati, A.
Wake dynamics and surface pressure variations on two-dimensional normal flat platesT14-Q01, T11-Q01 University of Alberta	Publication	2019-04-01	Hemmati, A., David H Wood, Robert J Martinuzzi
Performance of Turbulence Models in Simulating Wind Loads on Photovoltaics ModulesT14-Q01, T11-Q01 University of Alberta	Publication	2019-08-01	Mireille Tadie, Hemmati, A., Carlos Lange, Brian Fleck
Response of turbulent pipeflow to multiple square bar roughness elements at high Reynolds numberT11-Q01 University of Alberta	Publication	2020-07-01	Shubham Goswami, Hemmati, A.
Response of Viscoelastic Turbulent Pipeflow Past Square Bar Roughness: The Effect on Mean FlowT11-Q01 University of Alberta	Publication	2021-07-01	Shubham Goswami, Hemmati, A.
Coherent structures in the wake of a long wall-mounted rectangular prism at large incident anglesT14-Q01 University of Alberta	Publication	2021-03-01	Arash Zargar, Ahmet Gungor, Ali Tarokh, Hemmati, A.

Themes

Non-Electric Infrastructure (T11)

Completed Projects

Micro-scale energy harvesting technology in remote communities of Alberta (T14-Q01) (PI)

Topic:
Specify:

Hemmati, Arman

From FES Forum

Hemmati, Arman

Profile

FES Funded Projects

Outputs

Themes

Completed Projects