Josef Tanny, Ph.D.

Education

• 1979 - B.Sc. Mechanical Engineering, Faculty of Engineering, Tel Aviv University, Israel
• 1983 - M.Sc. Mechanical Engineering, Department of Fluid Mechanics and Heat Transfer, Faculty of Engineering, Tel Aviv University, Israel
• 1988 - Ph.D. Department of Fluid Mechanics and Heat Transfer, Faculty of Engineering, Tel Aviv University, Israel

Research interests

Microclimate in agricultural buildings

• Energy saving in heated buildings and greenhouses
• Radiative heating in a greenhouse
• Natural ventilation of greenhouses
• Microclimate of screenhouses
• Ventilation of broiler houses

• Properties of wind above and inside a shaded citrus orchard
• Eddy covariance measurements in screenhouses
• Effect of shade nets on water consumption and microclimate of apple and banana plantations

• Transient phenomena in natural ventilation of enclosures
• Turbulent airflow through openings of a naturally ventilated enclosure
• Interaction between different ventilation modes in a naturally ventilated enclosure

• Dynamics and structure of double-diffusive layers
• Instability phenomena in sidewall heating experiments
• A salinity gradient heated from below
• Interaction between double-diffusive and surface-tension instabilities
• A double-diffusive interface in a differentially heated enclosure

• Velocity field measurements in a laminar starting plume
• Absolute and convective instabilities in vertical flows
• Vertical buoyancy-induced flow in a stratified medium

• Mixing in turbulent stratified shear flows
• Flow patterns at a sheared density interface

• Solidification of a binary alloy at a vertical boundary
• Transparent insulation for visualization of solidification processes

• Velocity field measurements using digital processing of tracer-particle images
• Flow visualization using the Schlieren, shadowgraph and hydrogen bubble techniques
• Temperature field measurements using thermocouples and constant current anemometer
• Concentration field measurements using a Micro-Scale Conductivity Instrument
• Eddy covariance techniques for surface flux measurements

Publications

• Tanny, J. and Shlien, D.J. (1985).Velocity field measurements of a laminar starting plume, Physics of Fluids 28(4), pp.1027-1032. picture of plume
• Tanny, J. and Tsinober, A. (1988).The dynamics and structure of double-diffusive layers in side wall heating experiments, Journal of Fluid Mechanics, 196, pp.135-156. picture of layers
• Tanny, J., and Tsinober, A. (1989). On the Behavior of a System of Double-Diffusive Layers during its Evolution Physics of Fluids A, 1(3), pp. 606-609.
• Tanny, J., Kerpel, J., and Tsinober, A. (1989). On the layered structure in a stable solute gradient heated from below, Experiments in Fluids, 8, pp.161-164.
• Harel, Z., Tanny, J., and Tsinober, A. (1989). Double Diffusive Phenomena in a Stratified Fluid Close to Saturation, Journal of Physico-Chemical Hydrodynamics (PCH), 11 (5/6), pp.703-713.
• Naot, D., Peled, A, and Tanny, J. (1990). Response of Shear Flow Turbulence to Diffusional Electromagnetic Fluctuations, Applied Mathematical Modeling, 14, pp.226-236.
• Chai, A., Kit, E., Tanny, J. (1990). Simultaneous Visualization of Density and Velocity Variations in a Stratified Shear Flow, Experiments in Fluids, 9, pp.107-109.
• Kerpel, J., Tanny, J., Tsinober, A. (1991) On a Stable Solute Gradient Heated from Below with Prescribed Temperature, Journal of Fluid Mechanics, 223, pp.83-91.
• Tanny, J., Chai, A. (1991). Hydrogen Bubble Visualization of a Sheared Density Interface, Experiments in Fluids, 10(5), pp. 296-298.
• Kerpel, J., Tanny, J. and Tsinober, A. (1992). On the secondary layers in a stable solute gradient heated from below, Fluid Dynamics Research, 10, pp. 141-147.
• Harel, Z., Tanny, J. and Tsinober, A. (1993). The equilibrium solar pond - a laboratory model for the gradient layer, ASME Journal of Solar Energy Engineering,115, pp. 32-36.
• Chai, A., Tanny, J. and Kit, E. (1993). Experimental investigation of turbulent entrainment in an annulus with moving sidewalls, Experiments in Fluids, 15, pp. 97-107. picture
• Tanny, J., Chai, A. and Kit, E. (1995). On the Law of Turbulent Entrainment across a Density Interface, Fluid Dynamics Research, 15(1), pp. 69-74.
• Tanny, J. (1995). Experimental study on the crystallization of a binary melt at the vertical boundary of an enclosure, The International Journal of Heat and Mass Transfer, Vol.38, No.7, pp. 1141-1150.
• Tanny, J. and Gotlib, V. A. (1995). Linear stability of a Double Diffusive Layer with Variable Fluid Properties, The International Journal of Heat and Mass Transfer, Vol.38, No.9, pp. 1683-1691.
• Tanny, J., Chen, C. C. and Chen, C. F. (1995). Effects of interaction between Marangoni and double-diffusive instabilities, Journal of Fluid Mechanics, Vol. 303, pp. 1-21. Corrigendum published in: J. Fluid Mechanics, Vol.318, pp. 406-407, 1996.
• Krizhevsky, L., Cohen, J. and Tanny, J. (1996). Convective and absolute instabilities of a buoyancy-induced flow in a thermally stratified medium, Physics of Fluids, Vol.8, No.4, pp. 971-977.
• Teitel, M. and Tanny, J. (1996). A note on energy saving in heated enclosures, Building and Environment, Vol.31, No.6, pp. 537-540.
• Teitel, M. and Tanny, J. (1998). Radiative heat transfer from heating tubes in a greenhouse, Journal of Agricultural Engineering Research, Vol. 69, pp. 185-188.
• Tanny, J., and Cohen, J. (1998). The mean temperature field of a buoyancy-induced boundary layer adjacent to a vertical plate immersed in a stratified medium, International Journal of Heat and Mass Transfer, Vol. 41 (14), pp. 2125-2130.
• Tanny, J. and Teitel, M. (1998). Efficient utilization of energy in buildings and ponds, Applied Thermal Engineering, Vol. 18 (11), pp. 1111-1119.
• Tanny, J. and Yakubov, B. (1999). Experimental study of a double diffusive two-layer system in a laterally heated enclosure, International Journal of Heat and Mass Transfer, Vol. 42, No. 19, pp. 3619-3629. picture
• Teitel, M. and Tanny, J. (1999). Natural ventilation of greenhouses: experiments and model, Agricultural and Forest Meteorology, 96, pp.59-70.
• Ashkenazi, A. and Tanny, J. (2000). Vacuum transparent insulation for visualization of solidification experiments, Experiments in Fluids, 28(5), pp. 482-484.
• Tanny, J. and Yakubov, B. (2002). The effect of layer depth on mixing in a double diffusive two-layer system, International Journal of Heat and Mass Transfer, Vol. 45(10), pp. 2101-2105.
• Tanny, J. and Cohen, S. (2003). The effect of a small shade net on the properties of wind and selected boundary layer parameters above and within a citrus orchard, Biosystems Engineering, Vol. 84(1), pp. 57-67.
• Tanny, J., Cohen, S. and Teitel, M.(2003). Screenhouse microclimate and ventilation: an experimental study, Biosystems Engineering, Vol. 84(3), pp. 331-341.
• Kelley, D. E., Fernando, H. J. S., Gargett, A. E., Tanny, J. and Ozsoy, E.(2003). The diffusive regime of double diffusive convection, Progress in Oceanography, Vol. 56, pp. 461-481.
• Yahav, S., Straschnow, A., Luger, D., Shinder, D. Tanny, J. and Cohen, S. (2004).
  Ventilation, sensible heat loss and broiler energy and water balance under harsh environmental conditions Poultry Science,Vol. 83(2), pp. 253-258.
• Moller, M., Tanny, J., Li, Y. and Cohen, S. (2004). Measuring and predicting evapotranspiration in an insect-proof screenhouse. Agricultural and Forest Meteorology, 127, 35-51.
• Teitel, M. and Tanny, J. (2005). Turbulent transport of scalars through roof windows in a naturally ventilated enclosure. Flow, Turbulence and Combustion, 74, 21-47.
• Yahav, S., Shinder, D., Tanny, J. and Cohen, S. (2005). Sensible heat loss: the broiler's paradox. World's Poultry Science Journal, 61, 419-434.
• Tanny, J., Dviri, R. Svizher, A. and Cohen, J. (2005). The structure of a double-diffusive interface in a laterally-heated enclosure. International Journal of Heat and Mass Transfer, 48, 4926-4941.
• Haslavsky, V., Tanny, J., and Teitel, M. (2005). Interaction between the mixing and displacement modes in a naturally-ventilated enclosure Building and Environment, 41:1755-1761.
• Teitel, M, Tanny, J., Ben Yakir, D. and Barak, M. (2005). Airflow patterns through roof openings of a naturally ventilated greenhouse and their effect on insect penetration. Biosystems Engineering, 92(3), 341-353.
• Tanny, J., Haijun, L. and Cohen, S. (2006). Airflow characteristics, energy balance and eddy covariance measurements in a banana screenhouse. Agricultural and Forest Meteorology, 139, (1-2), 105-118.
• Yakubov, B., Tanny, J., Moalem-Maron, D. and Brauner, N. (2007). The dynamics and structure of a liquid-solid fluidized bed in inclined pipes. Chemical Engineering Journal , 128 (2-3), 105-114.
• Tanny, J., Haslavsky, V. and Teitel, M. (2007). Airflow and heat flux through the vertical opening of buoyancy-induced naturally-ventilated enclosures. Energy and Buildings, In Press.