Environmental Engineering

RESEARCH AREAS OF THE FACULTY MEMBERS

  • Fundamental studies of wave hydrodynamics and wave sea bed interactions (Prof. E. Kit, Prof. T. Miloh and Prof. L. Shemer).
  • Along shore and on-off shore transport of sand along the coast (Prof. E. Kit).
  • Thermal pollution of rivers and lakes as a result of cooling water discharge from power plants (Prof. T. Miloh and Prof. E. Kit).
  • Time-dependent modeling for solute transport in anisotropic heterogeneous aquifers (Prof. G. Dagan).
  • Identification of aquifer and stochastic modeling of groundwater flow and solute (Prof. G. Dagan).
  • Ground water pollution and underground transport of contaminants (Prof. G. Dagan).
  • Reduction of air pollution via slurry transportation of coal, minerals etc. (Prof. D. Barnea and Prof. Y. Taitel).
  • Real-world vehicle emission: study of emission and transport of air pollutants near junctions in urban areas (Dr. A. Ullmann and Dr. A. Dayan).
  • Source characterization of accidental release of hazardous materials from pressurized storage Vessels (Dr. A. Dayan and Dr. A. Ullmann).
  • Feasibility study of improving the effective stack height by means of passive edge device (Dr. A. Zifert and Prof. L. Shemer).
  • Remote sensing of the ocean surface by Interferometric Synthetic Aperture Radar (INSAR) as a tool for study and detection of oil-spill dispersion (Prof. L. Shemer).
  • Novel liquid-liquid extraction process for removal of organic solvents and heavy metals from waste streams (Dr. A Ullmann and Prof. N. Brauner).
  • Energy recovery from concentrated salt solutions (Prof. N. Brauner)
  • Development of novel bottoming thermodynamic cycles to improve gas turbine efficiency (Dr. A. Dayan).
  • Improved removal of organic vapors and odors by combined ozonation and absorption process. (Dr. A. Ullmann and Dr. A. Dayan).
  • Solid Contaminants Emission Rates from Boiling Pools. (Dr. A. Ullmann and Dr. A. Dayan).

     

    RESEARCH PROGRAM

    In the Fluid Mechanics and Heat Transfer Department at the Faculty of Engineering of the Tel Aviv University research efforts in two principal branches of Environmental Engineering are currently in progress. The first branch is concerned with the treatment and control of pollution; the second is on the modeling of pollutant dispersion in the atmosphere, in water bodies and in soil. Examples of the ongoing research work conducted in the two aforementioned branches are described below. Research efforts are currently underway to improve methods of organic solvents and heavy metals extraction from waste streams. A separate research is geared towards the removal of organic vapors and odors from polluted air by combined ozonation and adsorption processes. Another research work is aimed towards enhancing the thermal efficiency of power plants by utilization of novel working fluid in combined turbine cycles as well as of putting to use waste-heat. The latter, beyond energy conservation benefits, reduces emissions of green house gases such as carbon dioxide and thereby reduces global warming effects. In this domain, research activity for solar energy collection and use is conducted. In the critical issue of water resources, an ongoing research deals with the improvement of the reverse-osmosis desalination process, both to reduce costs and upgrade the desalinated water quality. For the control of pollutant dispersion, several research projects were initiated and are at different stages of progress. Amongst these projects, one is associated with the transport of underground contaminants for the reduction of industrial waste penetration into aquifers. For atmospheric pollution dispersion, studies are conducted both in specially designed wind tunnels and in actual field conditions. For instance, a field study on vehicle emission in urban areas intersections is in progress to improve and identify preferred traffic control with respect to pollution reduction. Another project was aimed towards improvement of stacks as a mean of diluting pollutant emissions and was conducted in a wind tunnel

     

    EDUCATIONAL PROGRAM

    Courses in environmental engineering are offered to graduate and undergraduate students. The focus, however, is on education for the M.Sc. degree - a program from which students graduate as masters in Environmental Engineering. Selected research topics in Environmental Engineering are presented to Ph.D. candidates. Specialization in the field can be studied already at the undergraduate level. In a practical sense, classes cover a wide range of subjects concerning environmental engineering and science, and therefore are interdisciplinary. The M.Sc. program in Environmental Engineering has been initiated in response to strong demand. This demand comes from governmental bureaus, municipalities, industrial enterprises, and consulting firms. Two kinds of students are enrolled in this program, one group consists of graduate students that come from the industry and the other are in-house students that want to pursue a career in the field. The external graduate students enhance the ties of the department to the community industrial needs. These ties help adapt the environmental studies curriculum and research work to the actual countrywide needs

    RESEARCH FACILITIES The department research activities are supported by the following laboratory facilities:
    Wind Tunnel Laboratory
    Consisting of a number of subsonic wind tunnels, equipped with a full range of velocity profile measurement probs. A video system is available for recording, image analysis and flow visualization experiments. A new wind tunnel for environmental studies is currently in construction. This wind tunnel will enable the study of diffusion of buoyant plumes within a thermally stratified boundary layer.
    Wave Hydrodynamics and Towing Tank Laboratory
    Includes 20-meter towing channel for measuring forces and moments on models and research of surface gravity waves and stratified fluids. A modular wave generator is also installed in the towing tank.
    Multi-Phase Flow Laboratory
    Includes three experimental setups for gas-liquid, liquid-liquid and solid-liquid flows. The following measurements are performed: Flow rates, pressure drop, flow pattern identification and hydrodynamic parameters of the various flow patterns.
    Computational Fluid Mechanics (CFD) Laboratory
    The CFD Lab is equipped with 12 DEC Alpha computers (DEC 3000/40) and a Silicon Graphics R4000 work-station. The Lab has strong capabilities of 35 g BYTE on hard-disk and a thermal VAX color printer. All the computers can work simultaneously on a single job by software emulation resulting in a peak performance of more than 220 M-Flops.

Tel Aviv University, P.O. Box 39040, Tel Aviv 6997801, Israel
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