Joseph Katz

		Joseph Katz William F. Ward Sr. Distinguished Professor Technical Editor, Journal of Fluids Engineering Department of Mechanical Engineering Whiting School of Engineering 118 Latrobe Hall Phone Number(s): Office:  (410) 516-5470 Email Address(es): katz@poseidon.me.jhu.edu Website(s): Laboratory for Experimental Fluid Dynamics Departmental Administrative Secretary Laurel Murphy 117 Latrobe (410) 516 - 7286 Laurel.Murphy@jhu.edu Research Interests: Cavitation phenomena, attached partial cavitation, cavitation in turbulent shear flows, jets and wakes. Multiphase flows: Interaction between bubbles and flow structure, mixing mechanisms and droplet formation in water-fuel stratified shear flows, transport of microscopic particles and droplets in turbulent flows. Development of optical flow diagnostics techniques, including Particle Image Velocimetry (PIV) and Holographic Particle Image Velocimetry (HPIV). Applications of PIV and HPIV for measuring the characteristics of turbulence and addressing turbulence modeling issues. Complex flow structure and turbulence within turbomachines: Wake-wake and blade-wake interactions in multistage axial turbomachines, flow and rotating stall in centrifugal pumps, development of optical diagnostics techniques for measurements in turbomachines. Oceanography: Flow structure and turbulence in the bottom boundary layer of the coastal ocean; measurement of spatial distributions of plankton, particles and bubbles in the ocean; development of optical instrumentation, including submersible holography and PIV systems. Prevention of nozzle wear in abrasive water suspension jets (AWSJ) using porous lubricated nozzles. Flow-induced vibrations and noise, mechanisms of noise generation in turbulent separated flows and in turbomachines.