ILASS -Americas 93 Conference

6th Annual Conference on Liquid Atomization and Spray Systems
May 17-19
Worchester, Massachusetts

ILASS - Americas, the Institute for Atomization and Spray Systems - North and South America, was established as an outgrowth of the International Conferences (ICLASS) held in Japan (1978 and 1988), USA (1982 and 1991), and England (1985). ILASS - Americas, like other ILASS bodies, is an organization of industrialists, researchers, academics, and students engaged in professional activities connected with the spraying of liquids. Its membership is limited to residents of countries that are part of the American continents.

ILASS - Americas is interdisciplinary and covers four main topics:
  • The design and operation of liquid atomizers and spray systems
  • Transfer process in which liquids are used, including but not limited to spray combustion, pesticide application. spray reactors, driers, humidifiers, spray coatings, and fire-fighting sprays.
  • Fluid mechanics of the disintegration of liquids and the formation of sprays; the mathematics of spray modeling.
  • Instrumentation for the measurement of drop size, velocity, concentration, and patternation.

    Work presented at the conference is current research on both practical applications and fundamental topics. Extended abstracts of each presentation are compiled in this volume.

     ILASS-Americas Chairman:     Norman Chigier, Carnegie Mellon University
     Vice Chairman and
      Membership Secretary:       Scott Samuelsen, University of California, Irvine
     Conference Chairman:         James Peters, University of Illinois at UrbanaChampaign
     Local arrangement Chairman:  Rick Slagle, Oxford Lasers, Inc.
     Conference Coordinator:      Amanda Homer, University of Illinois at Urbana-Champaign
    
  • Program Notes & Special Events
  • A Welcoming Reception Early Registration will be held between 6:00 and 9:00 pm on Sunday. All conference participants and their guests are invited to attend. Registration can also be made anytime during the meeting on Monday, Tuesday or Wednesday.
  • Exhibition of Images will be held from 7:00 am to 5:00 pm on Monday, 7:00 am to 5:30 pm on Tuesday, and 7:00 am to 3:30 pm on Wednesday. Manufacturers of spray and diagnostic equipment who are participating include:
                           Aerometrics, Inc.
                           Cooke Corp.
                           Dantec Measurement Technology, Inc.
                           Eastman Kodak Co.
                           Greenfield Instruments
                           Lumonics Northeast
                           NACVisualSystems
                           Oxford Lasers, Inc.
                           Turbosonic, Inc.
    
  • The ILASS - Americas Board of Directors Meeting will be held from 11:45 am to 1:15 pm on Monday.
  • The Editorial Board Meeting of Atomization and Sprays. The official journal of ILASS - Americas, will be held from 11:45 am to 1:15 pm on Tuesday.
  • The ILASS - Americas Annual Business Meeting will be held from 1:00 to 1:30 pm on Wednesday. All members of ILASS - Americas are encouraged to attend.
  • Technical Committee Meetings will be held at the following times:
       Committee:                   Chairman:              Day/Time:
     Physics of Atomization         N. Chigier           Monday, 5:00 - 6:30 pm
     Spray Combustion               C. Edwards           Monday, 5:00 - 6:30 pm
     Spray Measurements             S. Samuelsen         Monday, 5:00 - 6:30 pm
     Spray Modeling                 J. Bellan            Monday, 5:00 - 6:30 pm
     Agricultural Sprays            A. Hewitt            Tuesday, 5:30 - 7:00 pm
     Diesel Sprays                  R Reitz              Tuesday, 5:30 - 7:00 pm
     Gas Turbine Sprays             J. Kennedy           Tuesday, 5:30 - 7:00 pm
     Industrial Sprays              D. Senser            Tuesday, 5:30 - 7:00 pm
    
    Members are strongly encouraged to join the Technical Committee with which their interests are aligned.

  • On Monday evening from 7:00 to 10:00 pm, a Buffet Dinner and a Tear of the Worchester Art Museum has been arranged for conference participants. Advance registration and prepayment of $18.00 per person is required if you plan to attend.
  • The Conference Banquet will beheld at 7:30 pm on Tuesday. Advance registration and prepayment of $25.00 per person is required if you plan to attend.
  • Following the ILASS - Americas meeting. the ASTM E29.04 Subcommittee on Liquid Particle Characterization will have a two-day meeting on Thursday and Friday. This ASTM Committee is involved in writing standards on particle terminology, data processing, imaging and non imaging instrumentation, and reticle calibration equipment. Members and visitors are welcome. Any person interested in attending this meeting should contact the chairman, Mr.Thomas A. Bassett. through the message board.
  • ASIU Subcommittee E29.05 on reference Materials will meet following ILASS '93 from 6:00 to 10:00 pm on Thursday. The subcommittee scope is to provide liaison between ASTM E29 and MST during the development, by NIST, of standard reference materials for particle size measurement. Development of a set of recommended specifications for a photomask SRM for laser diffraction siding instruments will be discussed. Any person interested in attending this meeting should contact the chairman, Dr. Cary Presser, through the message board.reticie

  • Program - Monday, May 17, 1993
    7:00
    Registration and Exhibits
    8:00
    Welcome and Announcements
    8:15
    Invited Presentation: Spray Challenges in the Gas Turbine Industry, W. J. Dodds, General Electric Aircraft Engines
    SESSION I. SPRAY STRUCTURE
    CHAIRMAN: J. B. KENNEDY, UNITED TECHNOLOGIES RESEARCH CENTER
    CO CHAIRMAN: RW. TATE, DELAVAN, INC.

    8:45
    Phase Doppler Anemometry Measurements of Cross-Flow Injection of Liquid Jet Into a Gaseous Free Stream, S. M. Green, A. S. Nejad and C. N. Raffoul, Wright-Patterson, AFB, and L. A. Roe, Virginia Polytechnic Institute and State University

    9:05
    Effervescent Atomization at Low Mass Flowrates PartII: The Structure of the Spray, M. T. Lund, Procter and Gamble, and P. E. Sojka, Purdue University

    9:25
    Droplet Transport in Non swirling Pressure-Atomized Fuel Sprays, C, Presser, National Institute of Standards and Technology, and A. K. Gupta, University of Maryland 9:45 Break
    10:15
    Using Statistical Experiments in the Design of Spray Nozzles. C-P. Mao, Delavan, Inc

    10:35
    Spray Cone Angles of Effervescent Atomizers, S. K. Chen and A. H. Lefebvre, Purdue University

    10:55
    Secondary Atomization of charged Droplets in Diffusion Flames of Electrosatic Sprays, G. Chen and A. Gomez, Yale University

    11:15
    Influence of Temperature on the Structure of Super critical Fluid Coating Sprays, J. D. Colwell and D. W. Senser, Purdue University, and K. A. Nielson, Union Carbide Corporation 11:35 Lunch
    SESSION II. AGRICULTURAL SPRAYS
    CHAIRMAN: A.J. HEWFIT,NEW MEXICO STATE UNIVERSITY 
    CO CHAIRMAN: S. E. LAW, UNIVERSITY OF GEORGIA

    1:15
    The Spray Drift Task Force Atomization Program D. Esterly and C. Hermansky, E. I. du Pont de Nemours and Co., D. Valcore, Dow Elanco, and B. W. Young, Spray search - Daratech Pty Ltd

    1:35
    The Effect of Nozzles and Additives on Droplet Size of Cycle Spray Solutions, E. King, King Consulting 1:55
    Transient Characteristics and Electrictric Bormduy Effects Controlling Electrostatic Crop Spraying, S. E. Law, University of Georgia 2:15
    The Effects of Pump Shear Stress on Polymers Used in Agricultural Pesticide Application, R A. Downer. A. C. Chapple and F. R. Hall. The Ohio State University 2:35 Break
    3:05
    The Use of Aerosol in Mosqaito Control:A Brief Survey of Progress, P. G. Phillips, Beecomist Systems, Inc

    3:25
    Drop Size Scaling Analysis on Non-Newtonian Fluids, M. E. Teske and A. J. Bilanin, Continuum Dynamics, Inc., and J. W. Barry, USDA Forest Service

    3:45
    Statistical Comparison of Droplet Size Spectra, M. A. Apodaca, R. Sanderson, A. J. Haoitt, M. Ortiz, E. W. Huddleston, J. B. Ross and D. L. Clason, New Mexico State University

    4:05 Posters and Exhibits 5:00
    Meetings of the following Technical Committees
    Physics of Atomization, Chairman, N. Chigier
    Spray Combustion, Chairman, C. Edwards

    Spray Measurements, Chairman, S. Samuelsen
    Spray Modeling, Chairman,J. Bellan
    7:00 Buffet Dinner and Tour of the Worcester Art Museum
    Program-Tuesday, May 18, 1993
    7:00 Registration, Posters, and Exhibits
    8:00
    Invited Presentation: Advances in Internal Combustion Engine Modeling, R. D. Reitz, University of Wisconsin-Madison

    SESSION III. RECIPROCATING ENGINE SPRAYS
    CHAIRMAN: D. L, HARRINGTON, GENERAL MOTORS R&D CENTER
    CO CHAIRMAN: D. N. ASSAMS, UNIVERSITY OF: ILLINOIS AT URBANA-CHAMPAIGN

    8:30
    Diesel Engine Fuel Injection Requirements, J. M. Clarke and D. H. Gibson, Caterpillar, Inc

    8:50
    Study of High Speed Diesel Spray Characteristics with High Pressure Injection, K. K. Rao and D. E. Winterbone, University of Manchester institute of Science and Technology

    9:10
    Comparison of Predictions of Spray Dynamics and Spray Wall Interactions Against Experimental Measurements, L. K. Shih and D. N. Assanis, University of Illinois at UrbanaChampaign

    9:30
    Measurements of the Effect of Injection Rate and Split Injections on Diesel Engine Soot and NOxEmissions, D. Nehmer, T. Tow and R. D. Reitz University of Wisconsin-Madison

    9:50 Break
    10:20
    Characterization of the Transient Spraying with High Pressure Swirl Injector, L. W. Evers, Michigan Technological University

    10:40
    Evaluation of an Improved Model for Droplet Evaporation in High Temperatures, C. A. Varnavas and D. N. Assanis, University of Illinois at UrbanaChampaign

    SESSION IV. INSTRUMENTATION
    CHAIRMAN: V. G. MCDONELL, UNIVERSITY OF CALIFORNIA, IRVINE
    CO-CHAIRMAN: L. G. DODGE, SOUTHWEST RESEARCH INSTITUTE

    11:00
    Assessments of a Fourier Transform Doppler Signal Analyzer (DSA) and Comparisons with a Tune-Domain Counter Processor, J. Y. Zhu, E. J. Bachalo, R. C. Rudoff and W. D. Bachalo, Aerometrics, Inc.

    11:20
    Assessment of the InGupd Extinction Technique for Fuel Vapor Measurements, T. P. Billings and J. A. Drallmeier, University of Missouri-Rolla

    11:40 Lunch
    1:15
    Digital Image Analysis of Liquid Breakup and Atomization, D. Hasan, U. Shavit, M. Xu and N. Chigier, Camegie Mellon University, and P. Bennett, Greenfield Instruments

    1:35
    The Effect of Variations in Background Intensity on the Measured Size Distribution of an Imaging Instrument, A.T.S. Thamban and D. G. Talley, USAF Phillips Laboratory, and M. Hassani, University of Michigan

    1:55
    An Imaging System for Characterization of Volume Distribution in Sprays, T. Igushi, V. G. McDonell and G. S. Samuelsen, University of California, Irvine

    2:15
    Spray Sizing By Tomographic Imaging, N. Ashgriz and C. Oberle, State University of New York at Buffalo

    2:35
    Effects of Finite Beam Width on Elastic Light Scattering From Droplets, J. T. Hedges and C. Presser, National Institute of Standards and Technology

    2:55 Break
    3:25
    Wind Tunnel Atomizer Characterization with the Malvern Spectrometer: The Spatial Sampling Error, J.J.C. Picot. R. Goguen and D. Murray, University of New Brunswick

    3:45
    High Pressure Flow Facility for Study of Injector Design Impacts on Spray Characteristics, K. O. Famer, W. M. Grissom and G. Miller, USAF Phillips Laboratory

    4:05
    Combustion Chamber for Liquid Rocket Engine Injector Spray Measurements, D. Makel and J. Hulka. GenCorp Aerojet

    4:25 Posters and Exhibits
    5:30
    Meetings of the following Technical Committees
    Agricultural Sprays, Chairman, A. Hewitt
    Diesel Sprays, Chairman, R. Reitz
    Gas Turbine Sprays, Chairman, J. Kennedy
    Industrial Sprays, Chairman, D. Senser
    7:30 Banquet

    Program- Wednesday, May 19, 1993
    7:00
    Registration, Posters, and Exhibits
    8:00
    Invited Presentation: Spray Research Opportunities for Boiler and Furnace Applications, S. Londerville, Coen Burner Co

    SESSION V. ATOMIZATION PROCESSES
    CHAIRMAN: C. PRESSER, NATIONAL INSTITUTE OF STANDARDS AND TECHNOLOGY
    CO CHAIRMAN: D. G. TALLEY, USAF PHILLIPS LABORATORY

    8:30
    Transition Zow Structure of an Effervescent Atomizer Produced Spray, P.J. Santangelo and P. E. Sojka, Purdue University

    8:50
    Fractal Dimension Measurements of Disintegrating Coaxial Liquid Jet, U. Shavit and N. Chigier, Camegie Mellon University

    9:10
    Primary Breakup of a Liquid in a Trulsvgse Shock-Induced Flow, A. Ateshkadi, T. W. Eastes and G. S. Samuelsen, University of Califomia, Irvine

    9:30
    Temporally and Spatially Resolved Imaging of Drop Response to a Shock, T. W. Eastes and G. S. Samuelsen, University of California, Irvine

    9:50 Break
    10:20
    Improved Control of Drop Size from Commercial Black Liquid Nozzles, H. J. Empie, S. J. Lien, W. Yang and D. B. Samuels, Institute of Non NewtonianPaper Science and Technology, Inc.

    10:40
    Extensional and Shear Viscometer Atomizer for Non Newtonian Liquids, A. Mansour and N. Chigier, Camegie Mellon University

    SESSION VI. SPRAY MODELING
    CHAIRMAN: N. ASHGRTZ, STATE UNIVERSITY OF NEW YORK AT BUFFALO
    CO CHAIRMAN: S. C. YAO, CARNEGIE MELLON UNIVERSITY

    11:00
    Charge Injection Atomizer Droplet SR Distribution Modeling, A. J. Kelly, Charged Injection Corporation

    11:20
    Drop Deposition Within Conventional Air Paint Sprays, P. G. Hicks and D. W. Senser, Purdue University

    11:40 Lunch
    1:00 Business Meeting
    1:30
    A Hybrid Finite Element - Volume of Fluid Method for Simulating Liquid Atomization. F. Mashayekhi and N. Ashgriz, State University of New York at Buffalo

    1:50
    Entrainment and Evaporation of Drops in the Laminar Part of a Developing Mixing Layer, F. Fichot, J. Bellan and K. Harstad. California institute of Technology

    2:10
    Mixing and Dispersion of Liquid Sprays Injected Normally to Arial Turbulent Swirl Flows, K. J. Choi, Drexel University, and J. Xin, University of Illinois at Chicago

    2:30
    Modeling of Turbulent Impacting Spray Deposition, C. Z. Yang and S. C. Yao, Camegie Mellon University, and Q. Zhou, NOXSO Corporation

    2:50
    Statistical Structure of the Ideal Spray, Part I, C. F. Edwards and K. D. Manr. Sandia National Laboratories

    3:10
    Statistical Structure of the Ideal Spray, PartII, C. F. Edwards and K. D. Manr, Sandia National Laboratories

    Statistical Structure of the Ideal Spray, PartIII, C. F. Edwards and K. D. Manr. Sandia National Laboratories