Gülan, Utku

Education

2008 - (ongoing) : ETHZ, Dept. of Civil, Environmental and Geomatic Engineering (PhD. Degree)

2005 - 2008 : Gazi University, Dept. of Mechanical Engineering (MSc. Degree) / Türkiye

2000 - 2004 : Trakya University, Dept. of Mechanical Engineering (BSc. Degree) / Türkiye

1999 - 2000 : Edirne Anadolu High School / Türkiye

1997 - 1999 : Girne Education College / Cyprus

1995 - 1997 : Ashkabat Anadolu High School / Turkmenistan

Research Interests

• Biomechanics

• Aortic Flows

• Particle Tracking Velocimetry (3D PTV)

• Particle Imaging Velocimetry

• Fluid Mechanics

• Proton Exchange Membrane Fuel Cells

• Computational Fluid Dynamics

Awards

• 2011 5th European Conference of the International Federation for Medical and Biological Engineering, IFMBE Young Investigator Award, Budapest / Hungary

• 2007 Gazi University, Faculty of Eng.- Arch., MSc. Degree, Honor Student, Highest GPA (4.00 / 4.00)

• 2007 Gazi University, Dept. of Mech. Eng., MSc. Degree, Honor Student, Highest GPA (4.00 / 4.00)

• 2004 Trakya University, Faculty of Eng.- Arch., BSc. Degree, Honor Student, Highest GPA (3.34 / 4.00)

• 2004 Trakya University, Dept. of Mech. Eng., BSc. Degree, Honor Student, Highest GPA (3.34 / 4.00)

Scientific Activities

14 - 18 September 2011 : 5th European Conference of the International Federation for Medical and Biological Engineering, Budapest / Hungary
Website : hhttp://www.embec2011.com/?mod=content&cla=content&fun=access&id=84&mid=1&temp=base

27 - 29 June 2011 : EUROMECH 529 Colloquium : Cardiovascular Fluid Mechanics from theoretical aspects to diagnostic and therapeutic support, Cagliari / Italy
Website : http://cvfm.unica.it/index.html

9 - 11 June 2010 : Cost Action MP0806 WP1 - Workshop on Experiments for Particles in Turbulence, Zugspitze / Germany
Website : http://mp0806.cineca.it/index.php?option=com_content&view=article&id=55:presentations-of-wg1-in-zugspitze-2010&catid=5:wg1&Itemid=10

14 - 18 September 2009 : 6th International Symposium on Turbulence, Heat and Mass Transfer, Rome / Italy
Website : http://www.thmt-09.org/

26-28 August 2009 : Cost Action MP0806 WP1 - Workshop on Experiments for Particles in Turbulence, Zürich / Switzerland
Website : http://mp0806.cineca.it/index.php?option=com_content&view=article&id=3:work1&catid=5:wg1&Itemid=10

24-27 June 2009 : XVII. National Heat Science and Technique Congress, Sivas / Türkiye
Website : http://isikong.cumhuriyet.edu.tr/

9 - 13 February 2009 : Short Courses on Modelling and Computation of Multiphase Flows, Zürich / Switzerland
Website : http://www.ascomp.ch/ShortCourse/Short-Course.html

1 - 4 November 2007 : CAPPADOCIA SOFC Workshop, Nigde / Türkiye
Website : http://www.nigde.edu.tr/duyuru/calistayp1.pdf

11 - 14 September 2007 : XXIV. Summer School of the Membrane Society, Genoa / Italy
Website : http://www.chimica.unige.it/membrane/school/index.htm

19 August - 25 August 2007 : DTU Summer School on Complex Fluid Motion, Højskole / Denmark
Website : http://www.fluid.dtu.dk/English/Courses/Summer_School_2007.aspx

22 July - 3 August 2007 : NATO ASI Summer School on Mini Micro Fuel Cells, Cesme / Türkiye
Website : http://www.ichmt.org/upcoming-meetings/NATOASI-07/announce.html

30 May - 2 June 2007 : XVI. National Heat Science and Technique Congress, Kayseri / Türkiye
Website : http://isikong.erciyes.edu.tr

15 August - 24 August 2006 : First European Summer School on Hydrogen Safety, Belfast / U.K.
Website : http://www.engj.ulst.ac.uk/esshs/1stesshs/1stesshsindex.php

Conference Publications

• KNOBLOCH, V., BINTER, C., GULAN, U., BOESIGER, P., KOZERKE, S., 'Assessment of 3D velocity vector fields and turbulent kinetic energy in a realistic aortic phantom using multi-point variable-density velocity encoding', Society for Cardiovascular Magnetic Resonance SCMR 15th Annual Scientific Sessions, February 2012, Orlando / USA.
  Paper : http://www.jcmr-online.com/content/14/S1/W50

• GÜLAN, U., LÜTHI, B., HOLZNER, M., LIBERZON A., KINZELBACH, W., 'Experimental Analysis of the Lagrangian Flow Field in an Ascending Aorta by Particle Tracking Velocimetry', 5th European Conference of the International Federation for Medical and Biological Engineering, September 2011, Budapest / Hungary.
  Paper : http://www.springerlink.com/content/g5n27mu421725206/

• GÜLAN, U., LÜTHI, B., HOLZNER, M., LIBERZON A., KINZELBACH, W., 'Analysis of the flow field in an ascending aorta by Particle Tracking Velocimetry', EUROMECH 529 Colloquium : Cardiovascular Fluid Mechanics from theoretical aspects to diagnostic and therapeutic support, June 2011, Cagliari / Italy.

• GÜLAN, U., LÜTHI, B., HOLZNER, M., TSINOBER, A., MARKL M., LIBERZON A., KINZELBACH, W., 'Experimental Analysis of a human aorta via particle imaging and tracking velocimetry', 6th International Symposium on Turbulence, Heat and Mass Transfer, September 2009, Rome / Italy.

• GÜLAN, U., LÜTHI, B., HOLZNER, M., TSINOBER, A., KINZELBACH, W., 'Experimental Analysis of a human aorta via particle tracking velocimetry', ULIBTK'09 - XVII. National Heat Science and Technique Congress, June 2009, Sivas / Türkiye.

• GÜLAN, U., TÜRKOĞLU, H., 'Numerical Analysis of the effects of the porosity and cell geometry on cell performance of a PEM fuel cell', ULIBTK'09 - XVII. National Heat Science and Technique Congress, June 2009, Sivas / Türkiye.

• DEMİRHAN, L., GÜLAN, U., TÜRKOĞLU, H., 'Numerical analysis of fluid flow and concentration distribution of channels with porous layers on the base', DTU Summer School on Complex Fluid Motion, August 2007, Højskole / Denmark. (Poster Presentation)

• DEMİRHAN, L., GÜLAN, U., TÜRKOĞLU, H., 'Tabanında gözenekli tabaka bulunan kanallardaki akışkan akışı ve konsantrasyon dağılımının sayısal olarak incelenmesi', ULIBTK'07 - XVI. National Heat Science and Technique Congress, June 2007, Kayseri / Türkiye.

Journal Papers

• GULAN, U., TURKOGLU, H., Numerical Investigation of Effects of Porous Layer Properties and Thickness on Performance of PEMFC, Strojarstvo: Journal for Theory and Application in Mechanical Engineering, Vol.52, No.5, October 2010.

• GULAN, U., TURKOGLU, H., AR, I., The Effect of Inlet Parameters on Fluid Flow and Cell Performance at Cathode of a Proton Exchange Membrane Fuel Cell, Journal of Fuel Cell Science and Technology, 7, 041002 (8 pp), 2010.

Research

Aortic aneurysms are one of the leading causes of death all around the world. Hence, there is a strong interest in the analysis of aortic flows.The aorta is the largest artery leaving the heart. Turbulence and the associated increased shear stress are believed to be responsible for pathological blood flow phenomena. However, it is still unknown whether and under which circumstances aortic flow becomes turbulent.

The aim of this project is to advance the hydrodynamic understanding of aortic flow. We are studying transition from laminar to turbulent flow in an elastic and transparent anatomically accurate replica of a human aorta. For this purpose we employ the non intrusive measuring techniques; Particle Tracking Velocimetry (PTV) and Particle Imaging Velocimetry (PIV).

Here is a movie of one of the experiments that we performed in our lab. The fluid flow inside the aorta with an ascending aortic aneurysm is shown in the video below. The displacements of the particles along the ascending aorta during a heart beat can be seen in the video.

The fluid flow inside the healthy aorta is shown in the video below. The movie was recorded with a high speed camera with a frame rate of 2000 fps. The movie is 70 times slower than the real time recording.

The third movie shows the real time measurement in the replica of a human aorta under laser light. The disorganized flow can be seen clearly. The effect of the geometric deformation is significant close to the aortic arch. The particles used in this measurement are rhodamine particles with a diameter of 200 microns.

The Hydromechanics Lab

The hydromechanics group of IfU (Institute of Environmental Engineering) focuses on experimental research in complex, e.g. turbulent flows. The main technique used in projects is three dimensional particle tracking (3D-PTV). Three-dimensional Particle Tracking Velocimetry (3D-PTV) is a flexible non-instrusive image-analysis based flow measurement technique.

You can get useful information about the Hydromechanics Lab and (3D-PTV) Three Dimensional Particle Tracking Velocimetry technique by clicking the links below.

The Hydromechanics Lab

3D-PTV

Examples of 3D-PTV Experiments