Ármann Gylfason
Department Chair
2003 Cornell University, M.Sc. Aerospace Engineering
2000 University of Iceland, B.Sc. Mechanical and Industrial Engineering
Thor Thors Fellowship, The American-Scandinavian Foundation, May 2003.
Fulbright Scholarship, Icelandic-United States Educational Commission, Nov. 1999.
Prize for achievement in Mechanical Engineering, Thorvaldur Finnbogason Memorial Fund, May 1999.
My interests lie in the structure of the turbulent flow field, the mixing properties of turbulence, and motions of inertial particles in turbulent flows.
Journal Articles
A. Scagliarini, H. Einarsson, A. Gylfason and F. Toschi 2015. Law of the wall in an unstably stratified turbulent channel flow. In Press J. Fluid Mech.
A. Scagliarini, A. Gylfason and F. Toschi 2014. Heat flux scaling in turbulent Rayleigh-Bénard convection with an imposed longitudinal wind. Phys. Rev. E. 89, 043012
D.B. Blum, G.P. Bewley, E. Bodenschatz, M. Gibert, A. Gylfason, L. Mydlarski, G.A. Voth, H. Xu, and P.K. Yeung 2011. Signatures of non-universal scales in conditional structure functions from various turbulent flows. New J. Phys. 13, 113020.
H. Siebert, S. Gerashchenko, A. Gylfason, K. Lehmann, L.R. Collins, R.A. Shaw and Z. Warhaft 2010. Towards understanding of the role of turbulence on droplets in clouds: In situ and Laboratory measurements. Atm. Res. 97, 426-437
A. Gylfason and Z. Warhaft 2009. Effects of axisymmetric strain on a passive scalar field: modeling and experiment. J. Fluid Mech. 628, 339-356.
E. Wei Saw, R. A. Shaw, S. Ayyalasomayajula, P. Y. Chuang, A. Gylfason 2008. Inertial Clustering of Particles in High-Reynolds-Number Turbulence. Phys. Rev. Lett. 100, 214501.
S. Ayyalasomayajula, A. Gylfason, L.R. Collins, E. Bodenschatz and Z. Warhaft 2006. Lagrangian Measurements of Inertial Particle Accelerations in Grid Generated Wind Tunnel Turbulence. Phys. Rev. Lett. 97, 144507
A. Gylfason, S. Ayyalasomayajula, and Z. Warhaft 2004. Intermittency, Pressure and Acceleration Statistics from Hot-wire Anemometry in Wind Tunnel Turbulence. J. Fluid Mech. 501, 213-229.
A. Gylfason and Z. Warhaft 2004. On Higher Order Passive Scalar Structure Functions in Grid Turbulence. Phys. Fluids 16, 4012-4019.
Conference Proceedings
F. Toschi, A. Scagliarini, H. Einarsson, A. Gylfason, Nov 22-24, 2015. Buoyancy induced modication of the law-of-the-wall in an unstably stratied turbulent channel flow. 68th Annual Meeting of the APS Division of Fluid Dynamics; Boston, MA.
A. Gylfason M. Van Hinsberg, C. Lee, F. Toschi, Nov 22-24, 2015. Neutral and inertial particle acceleration in non-isotropic turbulent flows. 68th Annual Meeting of the APS Division of Fluid Dynamics; Boston, MA.
F. Toschi, A. Scagliarini, H. Einarsson, A. Gylfason, June 4, 2015. Law of the wall in an unstably stratified turbulent channel flow. International Conference on Raileigh-Bénard Turbulence, Göttingen, Germany.
A. Scagliarini, H. Einarsson, A. Gylfason, F. Toschi, Nov 24-26, 2014. Log-Law scaling of a convective boundary layer in an unstably stratified turbulent channel flow. 67th Annual Meeting of the APS Division of Fluid Dynamics; San Fransisco, CA.
A. Gylfason, March 17-21, 2014. Measurements of inertial particles in wind tunnel flows, in relation to cloud droplets. Invited Lecture: Of Rainfall and Marine Snow, Leiden, NL.
H. Einarsson, A. Scagliarini, L. Bouhlali, A. Gylfason, F. Toschi Nov 24-26, 2013. Small scale anisotropy in mixed convective turbulence. 66th Annual Meeting of the APS Division of Fluid Dynamics; Pittsburg, PA.
A. Gylfason, C.M. Lee, P. Perlekar, F Toschi, July. 1-5, 2013. Effects of flow anisotropy on Lagrangian statistics. CostMP0803 Particles in Turbulence 2013; Eindhoven, the Netherlands.
C.M. Lee, A. Gylfason, P. Perlekar, F Toschi, July. 1-5, 2013. Spatial effects on inertial particles in turbulence. CostMP0803 Particles in Turbulence 2013; Eindhoven, the Netherlands.
A. Scagliarini, A. Gylfason, F Toschi, July. 1-5, 2013. Heat transport through rodlike polymers solutions in mixed convection CostMP0803 Particles in Turbulence 2013; Eindhoven, the Netherlands.
A. Scagliarini, A. Gylfason, F Toschi, Nov. 18-20, 2012. Heat transfer through suspensions of particles in turbulent convection. 65th Annual Meeting of the APS Division of Fluid Dynamics; San Diego, CA.
C. Lee, A. Gylfason, P. Perlekar, F Toschi, Nov. 18-20, 2012. Spatial effects of flow straining on inertial particles in turbulence. 65th Annual Meeting of the APS Division of Fluid Dynamics; San Diego, CA.
D. Ivanov, L. Bouhlali, C. Lee, A. Gylfason, 2012. Lagrangian particle tracking in strained turbulence. Particles in complex flows 2012, Reykjavik, Iceland.
C. Lee, A. Gylfason, P. Perlekar, F Toschi, 2012. Spatial effects of strained turbulence on particle movements. Particles in complex flows 2012, Reykjavik, Iceland.
L. Leifsson, S. Koziel, F. Andrason, K. Magnusson, and A. Gylfason (2012) “Numerical Optimization and Experimental Validation of Low-Speed Wind Tunnel Contraction,” accepted, Int. Conf. Comp. Science, Omaha, Nebraska, June 4-6.
C. Lee, A. Gylfason, P. Perlekar, F Toschi. Direct numerical simulation of strained turbulence and particles within. College of Natural Sciences and Mathematics Faculty Research Symposium in California State University Long Beach.
C. Lee, A. Gylfason, P. Perlekar, F Toschi. Nov 14-17, 2011. Particle Behaviors in Strained Turbulence. SIAM Conference on Analysis of Partial Differential Equations, San Diego, CA.
D. Ivanov, L. Bouhlali, A. Gylfason, C. Lee. November 20-22, 2011. Lagrangian particle tracking in strained and buoyant flows. 64th Annual Meeting of the APS Division of Fluid Dynamics; Baltimore, ML.
A. Gylfason, C. Lee, P. Perlekar, F Toschi. November 20-22, 2011. Lagrangian motions and distribution of particles in strained turbulence. 64th Annual Meeting of the APS Division of Fluid Dynamics; Baltimore, ML.
A. Gylfason, C. Lee, P. Perlekar, F Toschi. September 12-15, 2011. Direct numerical simulation on strained turbulent
flows and particles within. European Turbulence Conference; Warsaw, Poland.
C. Lee P. Perlekar, F. Toschi and A. Gylfason. November 21-23, 2010. Direct numerical simulation of strained turbulence and particles within. 63rd Annual Meeting of the APS Division of Fluid Dynamics; Long Beach, California.
D. Ivanov, C. Lee, R.R. Gronkvist, and A. Gylfason November 21-23, 2010. Lagrangian particle tracking in strained turbulence. 63rd Annual Meeting of the APS Division of Fluid Dynamics; Long Beach, California.
P. Perlekar, C. Lee, F. Toschi and A. Gylfason. October 6-9, 2010. Direct numerical simulation of homogeneous straining flow. Werkgemeenschap Scientific Computing, Woudschoten, Netherlands.
C. Lee P. Perlekar, F. Toschi and A. Gylfason. May 25-28, 2010. Direct Numerical simulation of inertial particles in a strained turbulent flow. The 8th AIMS Conference on Dynamical Systems, Differential Equations and Applications, Dresden, Germany.
S. Ayyalasomayajula, A. Gylfason, Z. Warhaft, L. R. Collins and E. Bodenschatz Nov. 19-21, 2006. Experiments and models of inertial particles in high Reynolds number turbulence. American Physical Society Division of Fluid Dynamics Conference, Tampa Bay, FL.
S. Ayyalasomayajula, A. Gylfason, and Z. Warhaft. Sept. 11-14, 2006. Lagrangian measurements of fluid and inertial particles in decaying grid generated turbulence. IUTAM Symposium on Computational Physics and New Perspectives in Turbulence, Nagoya, Japan.
E. W. Saw, R. A. Shaw, S. Ayyalasomayajula, P. Y. Chuang, A. Gylfason, and Z. Warhaft. 12 July, 2006. Inertial clustering of droplets in high-reynolds-number laboratory turbulence. AMS 12th Conference on Atmospheric Pysics, Madison, FL.
S. Ayyalasomayajula, A. Gylfason, J. Salazar, Z. Warhaft, L. R. Collins and E. Bodenschatz July 17-20, 2006. Inertial Particle Accelerations in Turbulence: Experiments and Numerical Simulations. ASME Fluids Conference, Miami FL.
A. Gylfason, S. Ayyalasomayajula, and Z. Warhaft Nov. 20-22, 2005. Lagrangian Measurements of Inertial Particles in Wind Tunnel Turbulence. American Physical Society, Division of Fluid Dynamics Conference, Chicago, IL.
E. W. Saw, R. A. Shaw, S. Ayyalasomayajula, P.Y. Chuang and A. Gylfason. Nov. 20 – 22, 2005. Experimental study of scale-dependent droplet clustering in turbulence. American Physical Society, Division of Fluid Dynamics Conference, Chicago, IL.
Z. Warhaft, A. Gylfason and S. Ayyalasomayajula, Sept. 1-4, 2005. Preliminary Lagrangian Measurements of Inertial Particles in Wind Tunnel Turbulence. Challenging Turbulent Lagrangian Dynamics Conference, Rome, Italy.
A. Gylfason and Z. Warhaft Nov 21-23, 2004. High Reynolds Number Wind Tunnel Flow With Inertial Particles. American Physical Society, Division of Fluid Dynamics Conference, Seattle, WA.
Z. Warhaft and A. Gylfason June 29 - July 2, 2004. Passive Scalar Fine Scale Structure: Recent Results and Implications for the Velocity Field. 10th Euromech European Turbulence Conference. Trondheim, Norway.
A. Gylfason and Z. Warhaft Nov 23-25, 2003. On the Saturation of Scaling Exponents of Scalar Fields in Turbulent Flows. American Physical Society, Division of Fluid Dynamics Conference, Meadowlands NJ.
A. Gylfason and Z. Warhaft Nov 13-14, 2003. Inertial Particle Dynamics and Coalescence in Homogeneous Grid Turbulence. European Turbulence Network Meeting, Paris, France.
A. Gylfason, S. Ayyalasomayajula, and Z. Warhaft Nov 24-26, 2002. Turbulence Intermittency Characteristics in the Reynolds Number Range 100 < Rλ < 1000. American Physical Society, Division of Fluid Dynamics Conference, Dallas, TX.
Thesis
A. Gylfason, Jan 2006, Particles, Passive Scalars and the Small Scale Structure of Turbulence, Ph.D. thesis, Cornell University, Ithaca, NY.
