Seckin Gokaltun, Ph.D.

Research Scientist

Research

Research Team

(2010: From left: Merlin Ngachin,
Rinaldo G. Galdamez, Seckin Gokaltun, Stephen Wood)

Multiphase Flows

LBM simulation for gas bubble generation in a liquid with and without solids (LB2D Code,
M.Ngachin and S. Gokaltun, 2011)


Forced Convection Heat Transfer

Lattice Boltzmann Simulation of Flow and Heat Transfer in a Channel with a Blockage (Pr=6, Re=20) (S. Gokaltun, 2008)

Velocity Field:

Energy Field:

Publications



Publications


Multiphase Flows

19.
S.
Gokaltun
, J. Varona, A. Awwad, D. Roelant,
Detection
of Particle Clustering in Gas-Solid Systems using
Shadow-sizing Technique
, Powder Technology,
v 220, pp. 98 – 103, 2012.
18. M.
Ngachin, S. Gokaltun, M. Sukop, Simulation of Rising
Bubbles Using the Multiphase Lattice Boltzmann
Method – 11656, Proceedings of Waste Management
Conference 2011, Feb 27 – Mar 3, 2011, Phoenix, AZ,
2011.
17. R.
G. Galdamez, S. Wood, S. Gokaltun, Numerical
Simulations of Pulsed-Air Mixing Technology using
Multiphase Computational Fluid Dynamics Methods –
11301, Proceedings of Waste Management Conference
2011, Feb 27 – Mar 3, 2011, Phoenix, AZ, 2011.
16.
S.
Gokaltun
, D. McDaniel, A Lattice Boltzmann
Simulation of Gas Bubbles in Multiphase Flows with
High Density Ratios – 11304, Proceedings of Waste
Management Conference 2011, Feb 27 – Mar 3, 2011,
Phoenix, AZ, 2011.
15. M
Ngachin, R G Galdamez, S Gokaltun, and M Sukop,
“Lattice Boltzmann simulation of rising bubble
dynamics using an effective buoyancy method,”
Physical Review E, 2011, (in review).
14. M. Muradoglu,
S. Gokaltun,
Implicit
Multigrid Computations of Buoyant Light Drops Through
Sinusoidal Constrictions
, ASME Journal of Applied
Mechanics
, v 71, 6, pp 857-865, 2004.
13. S.
Gokaltun,
H. Saygin, M. Muradoglu, Implicit
Multigrid Computations of Unsteady Multiphase Flows
in Varying Cross-Sectional Area Channels,
Proceedings of the IUTAM Symposium On Integrated
Modeling of Fully Coupled Fluid-Structure
Interactions Using Analysis, Computations, and
Experiments
, (Eds. Benayora and Wei), Kluwer
Academic Publishers, pp. 509 – 519, 2003.


Micro/Macro Scale Gas Flow and Heat Transfer

12.
S. Gokaltun
, G. S. Dulikravich,



Lattice Boltzmann Simulations for Flow and Heat
Transfer in Constricted Channels
,

Computer & Mathematics with Applications
,
59, 7, pp. 2431-2441, 2010.
11.
S.
Gokaltun
,
G.S. Dulikravich, M.C. Sukop,
Statistical Modeling
of Rarefied Gas Channel Flows
, Proceedings of ASME
2009 Fluids
Engineering Division Summer Meeting, FEDSM 2009,
vol. 2, pp.519-527, 2009.
10. S.
Gokaltun
, G. S. Dulikravich,
Lattice Boltzmann
Method for Steady Gas Flows in Microchannels with
Imposed Slip Wall Boundary Condition
, Proceedings of
the ASME 5th International Conference on
Nanochannels, Microchannels and Minichannels
,
ICNMM2007, pp. 351-356, 2007.
9. H. Mo, C. Lin,
S. Gokaltun and P. V. Skudarnov,
Numerical Study ofAxisymmetric Gas Flow in Conical Micronozzles by DSMC andContinuum Methods
, Proceedings of 44th AIAA
Aerospace Sciences Meeting and Exhibit
,
AIAA-2006-0991, pp. 1-10. 2006.


Verification and Validation of CFD

8. P.V.
Skudarnov, C.X. Lin and S. Gokaltun,
Verification and Validation Studies for a Piloted
Methane-Air Jet Flame
, Proceedings of ASME
International Mechanical Engineering Congress and
Exposition, ASME Conference Proceedings, vol. 6, pp. 709-715, 2008.
7.

S. Gokaltun,
P. V. Skudarnov, and C.X. Lin,
Verification andValidation Studies for a Laminar Non-Premixed Methane/AirFlame, Proceedings of 2006 ASME International
Mechanical Engineering Congress and Exposition
,
IMECE2006 – Heat Transfer, pp. 7p, 2006.

6. S. Gokaltun, P. V. Skudarnov, C.X. Lin and H. Thornburg,
Verification and Validation Studies for Laminar HypersonicFlow Over a Blunted Cone and a Flat Plate,
Proceedings of AMSE 2006 Fluids Engineering Division
Summer Meeting
, FEDS2006, vol. 1, pp. 351 – 356,
2006.
5. S. Gokaltun, P. V. Skudarnov and C. Lin,
Verification and Validation of CFD Simulation of PulsatingLaminar Flow in a Straight Pipe, Proceedings of 17th AIAA Computational Fluid Dynamics Conference,
AIAA-2005-4863, pp. 1- 13, 2005.


Pipeline Unplugging

4.

S. Gokaltun
,
D. McDaniel, D. Roelant, J. Varona, R. Patel,
A. Awwad,
Evaluation of Innovative High Level Waste Pipeline
Unplugging Technologies – 9477
, Proceedings of Waste Management Conference
2009, March 1- 5, Phoenix, AZ, 2009.
3.
S.
Gokaltun
, D. McDaniel, J. Varona, D. Roelant, E.
Keszler, Full-Scale
Testing of Pipeline Unplugging
Technologies – NuVision’s Fluidic Wave-Action
Technology – 9236
, Proceedings of Waste Management Conference 2009, March
1- 5, Phoenix, AZ, 2009.
2. D. McDaniel, S. Gokaltun, J. Varona, R. Srivastava, A. Awwad, D.
Roelant,

Qualification of Innovative Waste Pipeline
Unplugging Technologies
, Waste Management
Conference 2008
, Feb. 24 – 28,  Phoenix, AZ,
2008.

 Optimization

1. I.S.
Akmandor, O. Oksuz, S. Gokaltun, M. Bilgin,
Genetic Optimization of Steam Injected Gas Turbine
Power Plants
”, GT-2002-30416, ASME
Conference Proceedings,
pp. 291-299, 2002.


Experience

2011
Research Scientist

FIU – Applied Research Center
2008 2011
Research Analyst

FIU – Applied Research Center
2004 2008
Research Assistant

FIU – Applied Research Center
2003 2004
Research Assistant

FIU – Mechanical Engineering
Department
2001 2003
Research Assistant

ITU – Informatics Institute


Education

Florida International
University
,

Ph.D.,
2008.



Mechanical and Materials Engineering
,
Miami, FL, USA.
Ph.D.
Dissertation: “Lattice
Boltzmann Method for Flow and Heat Transfer in
Microgeometries

Istanbul Technical
University
,
M.S.,
2003.


Computational Science and Engineering
,
Istanbul, TURKEY.
M.S.
Thesis: “Numerical
solution of unsteady incompressible flows with
applications to multiphase flows

Middle East Technical
University
,

B.S., 2001

Aerospace Engineering,
Ankara, TURKEY.


Awards

2008
NSF Travel Award
2007
NSF Travel Award

                                                        

                                                    

Highlights

(August, 2011)

Merlin Ngachin
graduated with an M.S. in Earth
and Environment. Access his thesis

here
. Merlin will be joining Waste Control
Specialists (WCS) in Texas as a Health Physicist. Congrats Merlin!
(August, 2011)

Stephen Wood
graduated with an M.S. in
Mechanical Engineering and he will continue his

Ph.D. studies at University of Tennessee
. Access
Stephen’s thesis

here
. Congrats Stephen!
(August, 2011) Dr.
Gokaltun received an award from DOE National Energy
Technology Lab for Fossil Energy Research.

Read more
.


(March, 2011) FIU DOE-Fellow

Stephen Wood
wins the student poster competition
at 2011 Waste Management Symposia at Phoenix,
Arizona for

his work on numerical modeling of pipeline fluid
transients
.

(March, 2011) FIU
DOE-Fellow

Rinaldo G. Galdamez
wins the
FIU
McNair Scholars
award on numerical analysis of
structural integrity of High Level Waste tanks.


Links