Joseph Katz

Professor

Education

Research

Experimental fluid mechanics; naval hydrodynamics and ocean instrumentation; quantitative flow visualization; three-dimensional wakes and separated flows; flow within pumps; and bubble dynamics and cavitation in turbulent shear flows.

Prof. Katz's research projects include: Flow structure and its effect on generation of noise within pumps; flow around and wake behind maneuvering, submerged bodies and surface piercing blunt bodies (bow flows); interaction between bubbles and vortex structures; pressure fluctuations and associated cavitation in turbulent shear flows; structure of turbulence in equilibrium and non-equilibrium conditions; implementation of holography and Particle Image Velocimetry (PIV) for in-situ measurements of particle fields and flow in the ocean; development of flow visualization techniques, including high speed PIV, holography and implementation in large scale test facilities; very high speed liquid flows, including problems related to shear induced heating; and reduction of nozzle wear in high speed slurry jets. Prof. Katz's research is sponsored by the Office of Naval Research, the National Science Foundation, and David Taylor Model Basin.

Selected Publications

Liu, S., Katz, J., Meneveau, C., "Evolution and Modeling of Subgrid Scales during Rapid Straining of Turbulence," Journal of Fluid Mechanics 387(1999): 281- 320.

Sridhar, G., Katz, J., "Effect of Entrained Bubbles on the Structure of Vortex Rings," accepted for publication in the Journal of Fluid Mechanics (1999)

Bertuccioli, L., Roth, G.I., Katz, J., Osborn, T.R., "Turbulence Measurements in the Bottom Boundary Layer using Particle Image Velocimetry," accepted for publication in Journal of Atmospheric and Oceanographic Technology (1999)

Katz, J., Donaghay, P.L., Zhang, J., King, S. Russell, K., "Submersible Holocamera for Detection of Particle Characteristics and Motions in the Ocean," Deep Sea Research I 46(1999): 1455-1481.

Gopalan, S., Katz, J., Knio, O., "The Flow Structure in the Near Field of Jets and its Effect on Cavitation Inception," accepted for publication in the Journal of Fluid Mechanics (1999)

Roth, G., Mascenik, D.T., Katz, J., "Measurements of the Flow Structure and Turbulence Within a Ship Bow Wave," accepted for publication in Physics of Fluids (1999)

Dong, R., Katz, J., Huang, T.T., "On the Structure of Bow Waves on a Ship Model," Journal of Fluid Mechanics 346(1997): 77-115.

Zhang, J., Tao, B., Katz, J., "Turbulent Flow Measurement in a Square Duct with Hybrid Holographic PIV," Experiments in Fluids Journal 23(1997): 373-381.

Pogozelski, E., J. Katz, and T. Huang. "The flow structure around a surface piercing strut." Physics of Fluids 9 (1997): 1387-1399.

Dong, R., S. Chu, and J. Katz. "Effect of modification to tongue and impeller geometry on unsteady flow, pressure fluctuations and noise in a centrifugal pump." ASME Journal of Turbomachinery 119 (1997).

Bertuccioli, L., S. Gopalan, and J Katz. "Image shifiting for PIV using birefringent and feroelectric liquid crystals." Experiments in Fluids Journal 21 (1996): 341-346.

Katz, J. and C. Meneveau. "Wake of induced relative motion of bubbles rising in line." International Journal of Multiphase Flow 22 (1996): 238-258.

Liu, S., C. Meneveau, and J. Katz. "Experimental Study of similarity subgrid-scale models of turbulence in the far field of a jet." Journal of Applied Scientific Research 54 (1995): 177-190.

Sridhar, G., and J. Katz. "Lift and drag forces on microscopic bubbles entrained by a vortex." Physics of Fluids 7 (1995) 389-399.

Chu, S., Dong, S., Katz, J., "Relationship between Unsteady Flow, Pressure Fluctuations and Noise in a Centrifugal Pump." Parts A and B, Journal of Fluids Engineering 117(1995): 24-35.

Liu, S., C. Meneveau, and J. Katz. "Experimental study of similarity subgrid-scale models of turbulence in the far field of a jet." Applied Scientific Research 54(1994): 177-190

Ganapathy, S., and J. Katz. "Lift and drag forces on microscopic bubbles entrained by a vortex." Physics of Fluids 7(1994): 389-399.

Ran, B., and J. Katz. "Pressure fluctuations and their effect on cavitation inception within water jets." Journal of Fluid Mechanics 262(1994): 223 - 263

Liu, S., C. Meneveau, and J. Katz. " On the properties of similarity subgrid-scale models as deduced from measurements in a turbulent jet." Journal of Fluid Mechanics 262(1994): 83 - 119.