ALEXANDROS SYRAKOS
ΑΛΕΞΑΝΔΡΟΣ ΣΥΡΑΚΟΣ
ALEXANDROS SYRAKOS
...
ΛΕΚΤΟΡΑΣ
Τμήμα Μηχανικών Μηχανολογίας και Κατασκευαστικής
Green Park
Λεωφ. Αγλαντζιας 91
506
22892261
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Προσωπικό Προφίλ

 Ο Δρ. Αλέξανδρος Συράκος απέκτησε το πτυχίο MEng (Master of Engineering) από το Τμήμα Μηχανολόγων Μηχανικών του Πανεπιστημίου του Leeds, U.K, το 1999. Το 2006 απέκτησε το Διδακτορικό Δίπλωμα από το Τμήμα Μηχανολόγων Μηχανικών του Αριστοτελείου Πανεπιστημίου Θεσσαλονίκης. H διατριβή του αφορούσε την ανάπτυξη τεχνικών βελτίωσης της απόδοσης της μεθόδου Πεπερασμένων Όγκων (προσαρμοστική βελτιστοποίηση του πλέγματος, μέθοδοι πολλαπλών πλεγμάτων) για τη προσομοίωση της ροής ρευστών. Κατά την περίοδο 2007-2011 εργάστηκε ως μεταδιδακτορικός ερευνητής στο Εργαστήριο Τεχνολογίας Περιβάλλοντος του Πανεπιστημίου Δυτικής Μακεδονίας, με επικεφαλής τον καθηγητή Ιωάννη Μπάρτζη, όπου εργάστηκε για την αριθμητική πρόγνωση μετεωρολογίας και ατμοσφαιρικής ρύπανσης. Την ίδια περίοδο δίδαξε επίσης προπτυχιακά μαθήματα (Μαθηματικά και προγραμματισμό σε Fortran) ως συμβασιούχος λέκτορας (Π.Δ. 407/80) στο Τμήμα Μηχανολόγων Μηχανικών του ίδιου πανεπιστημίου. Το 2012 προσλήφθηκε ως μεταδιδακτορικός ερευνητής από το Ωκεανογραφικό Κέντρο του Πανεπιστημίου Κύπρου για να εργαστεί για την ανάπτυξη του ωκεανογραφικού μοντέλου CYCOFOS. Εργάστηκε επίσης σε ερευνητικά έργα υπό την εποπτεία του καθηγητή Γεωργίου Γεωργίου του Τμήματος Μαθηματικών και Στατιστικής του Πανεπιστημίου Κύπρου για την αριθμητική προσομοίωση ιξωδοπλαστικών και θιξοτροπικών ροών (σε συνεργασία και με τον καθηγητή Ανδρέα Αλεξάνδρου). Κατά την περίοδο 2014-2019 διετέλεσε μεταδιδακτορικός ερευνητής στο Εργαστήριο Μηχανικής Ρευστών και Ρεολογίας του Τμήματος Χημικών Μηχανικών του Πανεπιστημίου Πατρών με επικεφαλής τον καθηγητή Ιωάννη Τσαμόπουλο. Εκεί εργάστηκε για την αριθμητική προσομοίωση ιξωδοπλαστικών, ιξωδοελαστικών και ελάστο-ιξωδοπλαστικών ροών μέσω μεθόδων πεπερασμένων όγκων και πεπερασμένων στοιχείων. Από το 2020 είναι Λέκτορας στο Τμήμα Μηχανικών Μηχανολογίας και Κατασκευής του Πανεπιστημίου Κύπρου.
  • Μη-Νευτώνεια ρευστομηχανική
  • Ρεολογία
  • Υπολογιστική ρευστομηχανική
  • Ανάπτυξη αριθμητικών μεθόδων για την προσομοίωση μη-Νευτώνειων ροών (μέθοδοι πεπερασμένων όγκων και πεπερασμένων στοιχείων).
  • Moschopoulos P., Syrakos A., Dimakopoulos Y., Tsamopoulos J. (2020) Dynamics of viscoplastic filament stretching. Journal of Non-Newtonian Fluid Mechanics, 284: 104371
  • Varchanis S., Syrakos A., Dimakopoulos Y., Tsamopoulos J. (2020) PEGAFEM-V: A new Petrov-Galerkin finite element method for free surface viscoelastic flows. Journal of Non-Newtonian Fluid Mechanics, 284: 104365
  • Pitsillou R., Syrakos A., Georgiou G.C. (2020) Application of the Lambert W function to steady shearing Newtonian flows with logarithmic wall slip. Physics of Fluids, 32: 053107
  • Syrakos A., Varchanis S., Haward S.J., Hopkins C.C., Syrakos A., Shen A.Q., Dimakopoulos Y., Tsamopoulos J. (2020). Transition between solid and liquid state of yield-stress fluids under purely extensional deformations. Proceedings of the National Academy of Sciences of the U.S.A. (PNAS), 117: 12611-12617
  • Syrakos A., Dimakopoulos Y., Tsamopoulos J. (2020). A finite volume method for the simulation of elastoviscoplastic flows and its application to the lid-driven cavity case. Journal of Non-Newtonian Fluid Mechanics, 275: 104216
  • Varchanis S., Syrakos A., Dimakopoulos Y., Tsamopoulos J. (2019). A new Finite Element formulation for viscoelastic flows: circumventing simultaneously the LBB condition and the high-Weissenberg number problem. Journal of Non-Newtonian Fluid Mechanics, 267: 78–97
  • Syrakos A., Dimakopoulos Y., Tsamopoulos J. (2018). Theoretical study of the flow in a fluid damper containing high viscosity silicone oil: Effects of shear-thinning and viscoelasticity. Physics of Fluids, 30: 030708
  • Syrakos A., Varchanis S., Dimakopoulos Y., Goulas A., Tsamopoulos J. (2017). A critical analysis of some popular methods for the discretisation of the gradient operator in finite volume methods. Physics of Fluids, 29: 127103
  • Syrakos A., Dimakopoulos Y., Georgiou G.C., Tsamopoulos J. (2016). Viscoplastic flow in an extrusion damper. Journal of Non-Newtonian Fluid Mechanics, 232: 102–124
  • Syrakos A., Georgiou G.C., Alexandrou A.N. (2016). Cessation of the lid-driven cavity flow of Newtonian and Bingham fluids. Rheologica Acta, 55: 51–66
  • Syrakos A., Georgiou G.C., Alexandrou A.N. (2015). Thixotropic flow past a cylinder. Journal of Non-Newtonian Fluid Mechanics, 220: 44–56
  • Syrakos A., Georgiou G.C., Alexandrou A.N. (2014). Performance of the finite volume method in solving regularised Bingham flows: inertia effects in the lid-driven cavity flow. Journal of Non-Newtonian Fluid Mechanics, 208-209: 88–107
  • Syrakos A., Georgiou G.C., Alexandrou A.N. (2013). Solution of the square lid-driven cavity flow of a Bingham plastic using the finite volume method. Journal of Non-Newtonian Fluid Mechanics 195: 19–31
  • Syrakos A., Efthimiou G., Bartzis J.G., Goulas A. (2012). Numerical experiments on the efficiency of local grid refinement based on truncation error estimates. Journal of Computational Physics 231: 6725–6753
  • Syrakos A., Goulas A. (2006). Finite volume adaptive solutions using SIMPLE as smoother. International Journal for Numerical Methods in Fluids 52: 1215–1245
  • Syrakos A., Goulas A. (2006). Estimate of the truncation error of finite volume discretization of the Navier–Stokes equations on colocated grids. International Journal for Numerical Methods in Fluids 50: 103–130

Profile Information

 Dr. Alexandros Syrakos obtained his MEng (Master of Engineering) degree from the Mechanical Engineering Department of the University of Leeds, U.K, in 1999. In 2006 he obtained his Ph.D. thesis from the Mechanical Engineering Department of the Aristotle University of Thessaloniki; his thesis concerned the development of performance-enhancing techniques, such as adaptive mesh refinement and multigrid, for the simulation of fluid flows via the Finite Volume Method. During 2007-2011 he was employed as a postdoctoral researcher in the Laboratory of Environmental Technology of the University of Western Macedonia, directed by Prof. John Bartzis, where he worked on numerical weather and air pollution prediction. During the same time, he also taught undergraduate courses (Mathematics, and Fortran programming) as an Adjunct Lecturer at the Mechanical Engineering Department of the same university. In 2012 he moved to Cyprus where he was hired as a postdoctoral researcher by the Oceanography Centre of the University of Cyprus to work on the development of their ocean forecasting model, CYCOFOS. He also worked on research projects supervised by Prof. Georgios Georgiou of the Department of Mathematics and Statistics of the University of Cyprus concerning the numerical simulation of viscoplastic and thixotropic flows (in collaboration also with Prof. Andreas Alexandrou). During 2014-2019 he was a postdoctoral researcher at the Laboratory of Fluid Mechanics and Rheology of the Department of Chemical Engineering of the University of Patras, directed by Prof. John Tsamopoulos. There he worked on the numerical simulation of viscoplastic, viscoelastic and elastoviscoplastic flows via Finite Volume and Finite Element methods. Since 2020 he is a Lecturer at the Department of Mechanical and Manufacturing Engineering of the University of Cyprus.
  • Non-Newtonian Fluid Mechanics
  • Rheology
  • Computational Fluid Dynamics
  • Development of numerical methods for the simulation of non-Newtonian flows (finite volume and finite element methods)
 
  • Moschopoulos P., Syrakos A., Dimakopoulos Y., Tsamopoulos J. (2020) Dynamics of viscoplastic filament stretching. Journal of Non-Newtonian Fluid Mechanics, 284: 104371
  • Varchanis S., Syrakos A., Dimakopoulos Y., Tsamopoulos J. (2020) PEGAFEM-V: A new Petrov-Galerkin finite element method for free surface viscoelastic flows. Journal of Non-Newtonian Fluid Mechanics, 284: 104365
  • Pitsillou R., Syrakos A., Georgiou G.C. (2020) Application of the Lambert W function to steady shearing Newtonian flows with logarithmic wall slip. Physics of Fluids, 32: 053107
  • Syrakos A., Varchanis S., Haward S.J., Hopkins C.C., Syrakos A., Shen A.Q., Dimakopoulos Y., Tsamopoulos J. (2020). Transition between solid and liquid state of yield-stress fluids under purely extensional deformations. Proceedings of the National Academy of Sciences of the U.S.A. (PNAS), 117: 12611-12617
  • Syrakos A., Dimakopoulos Y., Tsamopoulos J. (2020). A finite volume method for the simulation of elastoviscoplastic flows and its application to the lid-driven cavity case. Journal of Non-Newtonian Fluid Mechanics, 275: 104216
  • Varchanis S., Syrakos A., Dimakopoulos Y., Tsamopoulos J. (2019). A new Finite Element formulation for viscoelastic flows: circumventing simultaneously the LBB condition and the high-Weissenberg number problem. Journal of Non-Newtonian Fluid Mechanics, 267: 78–97
  • Syrakos A., Dimakopoulos Y., Tsamopoulos J. (2018). Theoretical study of the flow in a fluid damper containing high viscosity silicone oil: Effects of shear-thinning and viscoelasticity. Physics of Fluids, 30: 030708
  • Syrakos A., Varchanis S., Dimakopoulos Y., Goulas A., Tsamopoulos J. (2017). A critical analysis of some popular methods for the discretisation of the gradient operator in finite volume methods. Physics of Fluids, 29: 127103
  • Syrakos A., Dimakopoulos Y., Georgiou G.C., Tsamopoulos J. (2016). Viscoplastic flow in an extrusion damper. Journal of Non-Newtonian Fluid Mechanics, 232: 102–124
  • Syrakos A., Georgiou G.C., Alexandrou A.N. (2016). Cessation of the lid-driven cavity flow of Newtonian and Bingham fluids. Rheologica Acta, 55: 51–66
  • Syrakos A., Georgiou G.C., Alexandrou A.N. (2015). Thixotropic flow past a cylinder. Journal of Non-Newtonian Fluid Mechanics, 220: 44–56
  • Syrakos A., Georgiou G.C., Alexandrou A.N. (2014). Performance of the finite volume method in solving regularised Bingham flows: inertia effects in the lid-driven cavity flow. Journal of Non-Newtonian Fluid Mechanics, 208-209: 88–107
  • Syrakos A., Georgiou G.C., Alexandrou A.N. (2013). Solution of the square lid-driven cavity flow of a Bingham plastic using the finite volume method. Journal of Non-Newtonian Fluid Mechanics 195: 19–31
  • Syrakos A., Efthimiou G., Bartzis J.G., Goulas A. (2012). Numerical experiments on the efficiency of local grid refinement based on truncation error estimates. Journal of Computational Physics 231: 6725–6753
  • Syrakos A., Goulas A. (2006). Finite volume adaptive solutions using SIMPLE as smoother. International Journal for Numerical Methods in Fluids 52: 1215–1245
  • Syrakos A., Goulas A. (2006). Estimate of the truncation error of finite volume discretization of the Navier–Stokes equations on colocated grids. International Journal for Numerical Methods in Fluids 50: 103–130