Liverpool Skyline

Department of Maritime and Mechanical Engineering

Dr Mehdi Seddighi

Biography

Mehdi holds a BSc in Aerospace Engineering and MSc in Aerodynamics from Iran, and a PhD in Mechanical Engineering from University of Aberdeen. He studied a PhD in Engineering (Fluid Mechanics) on Direct Numerical Simulation of unsteady turbulent-turbulent transient flows, from 2008-2011. Upon completion of his PhD, he joined University of Sheffield, was working as a Research Associate in Turbulence, on several EPSRC, industrial and departmental projects until September 2015 when he joined LJMU as a lecturer/Senior Lecturer in Fluid Mechanics.

Research interests
- Unsteady turbulent flow (Numerical: DNS/LES; Experiment: PIV/LDV)
- Bypass transition in turbulent-turbulent transient flow (Smooth-wall, Rough wall)
- Control of turbulent flow
- Turbulent flow over rough surfaces

Web addresses
ResearchGate
GoogleScholar

Dr Seddighi is currently seeking motivated students with strong background in physics or engineering for PhD projects on the following areas:
- Control of turbulent flow using micro-patterned textured surfaces
- Turbulent-turbulent transient flow over smooth and rough surfaces

Current Teaching
- Fluid Mechanics I (Level 4)
- Fluid Mechanics III (Level 6) (Viscous flow, boundary layer theory, Blasius solution, von Karman's momentum integral equation)
- Engineering Analysis - CFD part (Level 6)
- Computational Fluid Dynamics (Level 7, MSc) (Introduction to CFD/Ipython Notebook, Steady diffusion problems ( Ipython Notebook; html), Introduction to numerical solution for linear algebraic equations, Steady convection-diffusion problems, Steady N.S. equation - SIMPLE algorithm, Unsteady N.S. equation – Chorin (projection) algorithm, Verification & Validation in CFD, Introduction to Turbulence - RANS)

Publications

Highlighted publications

Seddighi M, He S, Pokrajac D, O'Donoghue T, Vardy AE. 2015. Turbulence in a transient channel flow with a wall of pyramid roughness Journal of Fluid Mechanics, 781 :226-260 >DOI

Journal article

Mathur A, Seddighi M, He S. 2018. Transition of Transient Channel Flow with High Reynolds Number Ratios Entropy, 20(5) >DOI

Mathur A, Gorji S, He S, Seddighi M, Vardy AE, ODonoghue T, Pokrajac D. 2018. Temporal acceleration of a turbulent channel flow Journal of Fluid Mechanics, 835 :471-490 >DOI

He S, He K, Seddighi M. 2016. Laminarisation of flow at low Reynolds number due to streamwise body force Journal of Fluid Mechanics, 809 :31-71 >DOI

He K, Seddighi M, He S. 2016. DNS study of a pipe flow following a step increase in flow rate International Journal of Heat and Fluid Flow, 57 :130-141

Seddighi M, He S, Pokrajac D, O'Donoghue T, Vardy AE. 2015. Turbulence in a transient channel flow with a wall of pyramid roughness Journal of Fluid Mechanics, 781 :226-260 >DOI

He S, Seddighi M. 2015. Transition of transient channel flow after a change in Reynolds number Journal of Fluid Mechanics, 764 :395-427 >DOI

Seddighi M, He S, Vardy AE, Orlandi P. 2014. Direct numerical simulation of an accelerating channel flow Flow, Turbulence and Combustion, 92 :473-502 >DOI

Gorji S, Seddighi M, Ariyaratne C, Vardy AE, O'Donoghue T, Pokrajac D, He S. 2014. A comparative study of turbulence models in a transient channel flow Computers and Fluids, 89 :111-123 >DOI

He S, Seddighi M. 2013. Turbulence in transient channel flow Journal of Fluid Mechanics, 715 :60-102 >DOI

Seddighi M, He S, Orlandi P, Vardy AE. 2011. A comparative study of turbulence in ramp-up and ramp-down unsteady flows Flow, Turbulence and Combustion, 86 :439-454 >DOI

Conference publication

Seddighi M, He S. 2017. Turbulent-turbulent transient flow in a transitionally rough regime International Symposium on Turbulence and Shear Flow Phenomena, TSFP10

Khosh Aghdam S, Ricco P, Seddighi M. 2015. Turbulent drag reduction by hydrophobic surfaces with shear-dependent slip length 15th European Turbulence Conference

Seddighi M, He S, Vardy AE, O’Donoghue T, Dubravka P. 2015. Near-wall behaviour of transient flow in a channel with distributed 3-D roughness International Symposium on Turbulence and Shear Flow Phenomena, TSFP9

Seddighi M, He S. 2012. Turbulence structure in a rapidly accelerating channel flow