Fluid Mechanics Laboratory

Members

Facilities

Research

Publications

Miscellania

Members

Faculty

• Ömer Savas, Professor (savas@me.berkeley.edu)
• Dorian Liepmann, Assistant Professor (liepmann@me.berkeley.edu)
• Kathy Selby, Assistant Adjunct Professor, UCSF, and Visiting Scholar, UCB. (kselby@me.berkeley.edu)

  Graduate Students

• Jocelyn M. Bale-Glickman (jocelyn@me.berkeley.edu)
• Robert L. Bristol (bristol@me.berkeley.edu)
• E. Scott Collier (scollier@me.berkeley.edu)
• Michael J. DeBar (mdebar@me.berkeley.edu)
• Ajay A. Deshmukh (ajay@me.berkeley.edu)
• John D. Evans (jevans@me.berkeley.edu)
• Jason M. Ortega (jortega@me.berkeley.edu)
• Shilpa M. Shroff (shroff@me.berkeley.edu)
• Lun Tsuei (Tristan) (ltsuei@anafor.me.berkeley.edu)
• Todd H. Weisgraber (tweis@me.berkeley.edu)

  Undergraduate Students

• Russell Cole(HSL44@hotmail.com)
• Jeff Ernst(jeff70@earthlink.net)

  Alumni

  Ph.D.
  1997
  

• Amy L. Chen, "Experimental investigation of transient aerodynamics in vehicle interactions."
  M.S. 1995, "An experimental investigation of vortical structures in grid-generated turbulence."
  LKW: Exxon Production Research, Houston, TX (chena@anafor.me.berkeley.edu)
  1996
  
• Drazen Fabris, "Combined experimental and computational investigation of a vortex ring impinging normally on a wall."
  LKW: Illinois Institute of Technology (fabris@mmae.iit.edu)
  1995
  
• Jamey D. Jacob, "Experimental investigation of the trailing vortex wake of rectangular airfoils."
  M.S., 1992, "Flow field imaging and quantification using thin reflective disks: preliminary results on grid turbulence in a box."
  LKW: Assistant Professor, University of Kentucky. (jdjacob@engr.uky.edu)
• Michael J. Sholl, "Quasi-geostrophic vortex merger."
  M.S., 1992, "Digital image velocimetry: development of a practical system."
  LKW: Lockheed-Martin Missles & Space, Sunnyvale, CA (sholl@sgi412.msd.lmsc.lockheed.com)

  M.S.
  1999
  

• Robert L. Bristol, (bristol@me.berkeley.edu) "An experimental investigation into the wake vortex roll-up of a rectangular airfoil."
  1998
  
• Philip A. Snyder, ( psnyder@anafor.me.berkeley.edu) "Control implications of platoon aerodynamics."
  
• Jason M. Ortega, (jortega@me.berkeley.edu) "Three-dimensional trailing vortex structure in the near wake of a rectangular airfoil."
  
• Jeremy A. McCauley, (jeremymc@anafor.me.berkeley.edu) "The behavior of the trailing vortices in the wake of a flapped rectangular wing."
  1997
  
• Michael J. DeBar, "Air and particle flow in a drive enclosure."
• Rossana Quinones, (rossana@.me.berkeley.edu) "3D Imaging and Modeling of Chemical/Contaminant Transport in Porous Media"
  
• Lee B. Thomason, "?????" (thomason@me.berkeley.edu)
  
• Todd H. Weisgraber, "The turbulent structure of a round jet during transition to self-similarity."
  1996
  
• Pablo Mitchell, "Spray generated from curved surfaces."
  LKW: Combustion group, UC Berkeley
  (pablo@me.berkeley.edu)
• Kendra V. Sharp, "An experimental study of flow through a stenosed carotid artery."
  LKW: University of Illinois, Urbana-Champaign (kvsharp@uiuc.edu)
  1995
  
• Ricardo M. Carossino, "Preliminary studies on laser vorticimetry measurement of the rotational velocity of microspheres." LKW: Schlumberger, Scotland
• Staci A. Edlund, "The effect of strong forcing on submerged axisymmetric jets."
  LKW: Georgia Institute of Technology. (gt7490f@prism.gatech.edu)
• Lisa M. Kearney, "?????"
  LKW: Lockheed-Martin Missiles & Space, Sunnyvale, CA
• Cathy A. Norton, "Effect of inlet chamber geometry on the shape of the proximal flow convergence isovelocity surfaces in models of valvular heart disease." 1994
  
• David E. Barland, "Experimental investigation of the turbulent far wake behind finite and infinite obstacles."
  LKW: Phillips Laboratory, Edwards AFB.

  (LKW: Last Known Where-abouts)

Facilities

There are a number of facilities for research. Here is a short list:
• The UCB-NAOE 70 m long water towing tank (cross-sectional area = 2.4 m wide x 1.5 m deep).
• The small FML 6' water towing tank (cross-sectional area = 2' x 2').
• The FML low-turbulence sub-sonic wind tunnel.
• Turbulent grid flow in a box.
• Rotating cylinder.
• Turbulent jet apparatus.
  • Air jet.
  • Water jet.
• Turbulent pipe flow.
• Vortex ring generator.
• Two-dimensional jet flow/bow wake.
• Heart flow apparatus/pulsatile jet flow.
• Digital workstations and Pentium PCs.

Research

A picture is worth a thousand words . . .
• Vortex dynamics in the wake of a flapped rectangular airfoil.
• Roll-up of the vortex sheet from an airfoil.
• Transient aerodynamic vehicle interactions.
• Particle image velocimetry with Lagrangian Parcel Tracking (LPT).
• Turbulent wake of a grid in a box.
• Breakup of a 2D jet.

Publications

• A wind tunnel investigation of the transient aerodynamic effects on a four-car platoon during passing maneuvers
  L. Tsuei, Ö. Savas
  SAE Paper, 00B-125, 2000.
• Treatment of interfaces in particle image velocimetry
  L. Tsuei, Ö. Savas
  Exp. Fluids, to appear, 1999.
• A towing tank study of airfoil wake vortices at Re of order 10^5
  R. Bristol, J. Ortega, and Ö. Savas
  AIAA Paper 99-3419, 1999.
• Transient arodynamic effects on a four-car platoon during passing maneuvers: data summary
  L. Tsuei, J. K. Hedrick, and Ö. Savas
  California PATH Program, Institute of Transportaion Studies, Univeristy of California, Berkeley, California PATH Research Report UCB-ITS-PRR-99-29, 1999.
• Dynamics of corotating vortex pairs in the wakes of flapped airfoils.
  A. L. Chen, J. D. Jacob, and Ö. Savas
  Journal of Fluid Mechanics, Vol. 382, 155-193, 1999.
• A Lagrangian parcel tracking method for velocity measurements in high-gradient flows.
  M. J. Sholl and Ö. Savas
  in review, 1997.
• Transient aerodynamics in vehicle interactions: data base summary
  A. L. Chen, K. Hedrick, and Ö. Savas
  California PATH Program, Institute of Transportaion Studies, Univeristy of California, Berkeley, California PATH Research Report UCB-ITS-PWP-98-3, 1998.
• Transient vehicle aerodynamics in four-car platoons
  A. L. Chen, Ö. Savas, and K. Hedrick
  California PATH Program, Institute of Transportaion Studies, Univeristy of California, Berkeley, California PATH Research Report UCB-ITS-PRR-97-50, 1997.
• Isovors: vortex wake flows catalog
  A. L. Chen, J. D. Jacob, and Ö. Savas
  Institute of Transportaion Studies, Univeristy of California, Berkeley, Research Report UCB-ITS-RR-97-3, 1997.
• Trailing vortex wake growth characteristics of a high aspect ratio rectangular airfoil.
  J. D. Jacob, Ö. Savas, and D. Liepmann
  AIAA Journal, 35(2), 1997.
• Vortex dynamics in trailing wakes of flapped rectangular wings.
  J. D. Jacob and Ö. Savas
  35th Aerospace Sciences Meeting and Exhibit, AIAA Paper No. 97-0048, 1997.
• A fast Lagrangian PIV method for study of general high-gradient flows.
  M. Sholl and Ö. Savas
  35th Aerospace Sciences Meeting and Exhibit, AIAA Paper No. 97-0493, 1997.
• Experimental measurements and matching simulation of a vortex ring impinging on a wall.
  D. Fabris, D. Liepmann, and D. Marcus
  ASME Proceedings, 1996.
• Quantitative experimental and numerical investigation of a vortex ring impinging on a wall.
  D. Fabris, D. Liepmann, and D. Marcus
  in review, 1996.
• Aircraft wake turbulence and airport capacity.
  J. D. Jacob, D. Liepmann, and Ö. Savas
  Institute of Transportation Studies Review, University of California, Berkeley, 19(4), 1996.
• Experimental investigation of forced wake vortices of a rectangular wing.
  J. D. Jacob, D. Liepmann, and Ö. Savas
  14th AIAA Applied Aerodynamics Conference, AIAA Paper No. 96-2497, 1996.
• Natural and forced growth characteristics of the vortex wake of a rectangular airfoil.
  J. D. Jacob, D. Liepmann, and Ö. Savas
  AGARD Conference Proceedings, 1996, 584, pp. 27:1-12.
• Experimental investigation of the trailing vortex wake of a rectangular wing.
  J. D. Jacob, D. Liepmann, and Ö. Savas
  13th AIAA Applied Aerodynamics Conference, AIAA Paper No. 95-1841, 1995.
• Experimental evidence for intense vortical structures in grid turbulence.
  J. D. Jacob and Ö. Savas
  ZAMP, 1995, 46, pp. 699-716.

Miscellania

Associated Research Units

• Vortex Wake Physics Working Group
• Fluid Dynamics Division, University of Kentucky
• Berkeley Computational Fluid Dynamics Laboratories
• Berkeley Bioengineering Laboratories
• Berkeley Sensor and Actuator Center

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