11th ILASS-Americas 1998 in Sacramento, CA


Recent Conference Papers





Program Notes & Special Events
ILASS - Americas would like to thank the following Sponsors for their contribution to the success of this year's conference:
  • Aerometrics, Inc.
  • Fuel Systems Textron
  • BASF Corporation
  • Spraying Systems Company
  • Dow AgroSciences
  • Union Carbide
  • NRC Canada / Institute for Chemical Process and Environmental Technology
  • United Technologies Research Center
Program - Sunday, May 17
"Characterization of Dense Sprays"
Facilitator - Mr. Lee Dodge  (Southwest Research Institute)
Panelist    - Dr. Will Bachalo  (Past President, Aerometrics, Inc.)
            - Prof. Jim Peters  (University of Illinois)
            - Dr. Doug Talley  (USAF Phillips Laboratory)
"Rheological Issues in Spray Formation and Applications"
Facilitator - Dr. Chuck Lipp (Dow Chemical Company)
Panelists   - Prof. Norman Chigier  (Carnegie Mellon University)
            - Dr. Clarence Hermansky  (DuPont Agricultural Products)
            - Prof. Paul Sojka  (Purdue University)
            - Mr. Dave Valcore  (DowElanco)


Program - Monday, May 18
Invited Presentation: Dr. Thomas Wolf, Agriculture and AgriFood Canada, "Developing Criteria for the Ideal Agricultural Spray: A Biologist's Perspective"

Session I. Spray Deposition
Chairperson: R. Kozarek
Characterization of Metal Sprays Produced by the Twin-Wire Arc Process
R. Wright, J. Fincke, W. Swank, D. Haggard, Idaho National Engineering Laboratory, Idaho Falls, ID; C. Richards, R. Richards, Washington State University, Pullman, WA

3-D Transient Numerical Simulation of Industrial Impacting Sprays with Electric Fields
K. Su, J. Hoburg, S.Yao, Carnegie Mellon University, Pittsburgh, PA

Electrostatic Atomization Analysis
J. Zheng, L. Tian, University of Illinois at Urbana-Champaign, Urbana, IL

Linear Spray Atomization and Deposition of 3003 Al Alloy
Y. Zhou, S. Lee, V. McDonell, S. Samuelsen, E. Lavernia, University of California, Irvine, CA; R. Kozarek, Aluminum Company of America, Alcoa Center, PA

Session II. Diesel Sprays
Chairperson: G. Smallwood
Spray Characterization of an Intermittent Diesel Injector
C. Eastwood, S.-C. Li, University of California, San Diego, CA; K. Gebert, BKM, Inc., San Diego, CA

Microscopic Visualization of Transient Diesel Sprays
M.-C. Lai, T.-C. Wang, X. Xie, Wayne State University, Detroit, MI

Modeling the Effects of Lift and Drag Forces on Liquid Drops in Impinging Sprays
P. Senecal, D. Stanton, R. Reitz, C. Rutland, University of Wisconsin-Madison, Madison, WI

Modeling of Turbulent Primary Breakup in Diesel Spray
T. Dan, M.-C. Lai, Wayne State University, Detroit, MI

Session III. Agricultural Sprays
Chairpersons: R. Schick and T. McCracken
Droplet Size Classification Schemes for Agricultural Sprays
A. Hewitt, Stewart Agricultural Research Services, Inc., Macon, MO; D. Valcore, Dow AgroSciences, Indianapolis, IN; M. Teske, Continuum Dynamics, Inc., Princeton, NJ; R. Schick, Spraying Systems Co., Wheaton, IL

A Regression Model for Estimating Spray Quality from Nozzle, Application and Physical Property Data
C. Hermansky, Dupont Agricultural Products, Wilmington, DE

Aircraft Spray Drift and the Requirement for Improved Atomiser Design
I. Craig, N. Woods, G. Dorr, University of Queensland, Australia

An Analytical Approach to Determination of Momentum Distribution within a Spray
T. McCracken, A. Bennett, National Research Council, Ottawa, Ontario, Canada; C. Brunet, ICAM, Lilles, France

Numerical Simulations of the Deposition of Agricultural Sprays on Plant Canopy
L. Hung, K. Su, S. Yao, Carnegie Mellon University, Pittsburgh, PA

A Technique to Compare the Droplet Size Spectrum Deposited on Water Sensitive Papers and in Oil Cells
L. Tian, J. Zheng, L. Bode, University of Illinois at Urbana-Champaign,Urbana, IL

Drop Size Scaling of Agricultural Spray Material by Dimensional Analysis
M. Teske, Continuum Dynamics, Inc., Princeton, NJ; H. Thistle, USDA Forest Service, Missoula, MT

Session IV. Automotive Sprays
Chairpersons: L. Markle and C.-F. Lee
Atomization Quality of Liquid Fuel Entering the Cylinder of a Port Injected, Spark Ignition Engine
P. Kelly-Zion, J. Styron, C.-F. Lee, R. Lucht, J. Peters, R. White, University of Illinois at Urbana-Champaign, Urbana, IL

Computations of In-Cylinder Multicomponent Fuel Distribution of a Port Injected Spark Ignition Engine
Y. Zeng, C.-F. Lee, University of Illinois at Urbana-Champaign, Urbana, IL

Visualization of Direct-Injection Gasoline Spray Structure inside a Motoring Engine
J.-H. Yoo, S.-K. Kim, M.-C. Lai, Wayne State University, Detroit, MI

Towards Quantitative Characterization of Transient Fuel Sprays Using Planar Laser Induced Fluorescence Imaging
J. Su, M. Drake, T. Fansler, D. Harrington, General Motors Global Research and Development Operations, Warren, MI

A Computational and Experimental Investigation of Spray/Wall Impingement
M. Trujillo, W. Mathews, C.-F. Lee, J. Peters, University of Illinois at Urbana-Champaign, Urbana, IL

Computation of the Hollow Cone Spray from Pressure-Swirl Injector
W.-M. Ren, S. Nally, Siemens Automotive, Newport News, VA

Session V. Injector Design
Chairpersons: F. Ruiz and C. Lipp
Investigation of Pressure-Swirl Atomization for Aerosol Applications with and without Acoustic Modulations
T. Chen, X. Li, University of Waterloo, Ontario, Canada; P. Varanasi, N. Tcheurekdjian, S. C. Johnson & Son, Inc., Racine, WI

Piezoelectrically Driven Simplex Atomizers at Atmospheric Pressure
C. Sipperley, C. Edwards, Stanford University, Stanford, CA; D. Wang, A. Ganji, Berkeley Applied Science and Engineering, San Francisco, CA

Turbulence Inside a Cavitating Injector Orifice: a Different Animal
F. Ruiz, Illinois Institute of Technology, Chicago, IL; L. He, ALNOR Inc., Skokie, IL

Visualization of Cavitation in Low-Pressure Miniature Slot Flows
H. Li, P. Sanchez, S. Collicott, Purdue University, West Lafayette, IN

Effects of Nozzle Pressure Forms on Atomization
V. Cook, S. Lin, Clarkson University, Potsdam, NY

Evaluation and Design of Nebulizers for Nuclear Medicine Diagnostics
N. Sankagiri, G. Ruff, Drexel University, Philadelphia, PA; M. Bono, AMICI, Inc, Spring City, PA

Session VI. Modeling I
Chairpersons: S. Heister and R. Miller
Nonlinear Distortion of Infinitely Long Thin Planar and Annular Liquid Sheets
C. Mehring, W. Sirignano, University of California, Irvine, CA

Nonlinear Distortion of Semi-Infinitely Long Thin Planar and Annular Liquid Sheets
C. Mehring, W. Sirignano, University of California, Irvine, CA

Disintegration of an Annular Liquid Sheet Subject to Swirling Air Streams
Y. Liao, S. Jeng, M. Jog, University of Cincinnati, Cincinnati, OH; M. Benjamin, Parker Hannifin Corporation, Mentor, OH

The Non-Linear Breakup of Annular Liquid Sheets
M. Panchagnula, P. Sojka, A. Bajaj, Purdue University, West Lafayette, IN

Three-Dimensional Symmetric Distortion of Thin Liquid Sheets
I. Kim, W. Sirignano, University of California, Irvine, CA

Dynamics of Drop Formation in an Electric Field
P. Notz, O. Basaran, Purdue University, West Lafayette, IN

Program - Tuesday, May 19
Invited Presentation: Mr. George Cox, Pratt & Whitney, "Relevance of Spray Studies to Propulsion Systems"
Session VII. Injector Design & Spray Characteristics
Chairperson: S. Collicott
Atomization Study of Coaxial Pintle Rocket Injector
D. Escher, S. Rahman, S. Pal, R. Santoro, The Pennsylvania State University, University Park, PA

Characterization of Instability in the Disintegration of Liquid Jets from Twin Fluid Atomizers
D. Kirpalani, T. McCracken, A. Bennett, National Research Council of Canada, Ottawa, Ontario, Canada

Identifying Frequencies in Video Images of Drying Spray: a Wavelet Procedure for Data Reduction
D. Klaus, S. Moor, Lafayette College, Easton, PA

Formation of Near-Monodisperse Sprays Using an Electrostatic Atomizer Operating in Multi-Jet Mode
J. Epperson, P. Sojka, Purdue University, West Lafayette, IN

Session VIII. Spray Dynamics and Drop-Flow Interaction
Chairpersons: A. Gupta and S. Rahman
A Two-Way Coupling Discrete Vortex Method for Two-Phase Jet Flow
C. Xu, C. Richards, C. Crowe, T. Troutt, Washington State University, Pullman, WA

Modelling Spectral Influences in Droplet/Turbulence Interaction
R. Sellens, W. Zeng, Queen=s University at Kingston, Kingston, Ontario, Canada

Direct Numerical Simulation of a Confined Three-Dimensional Gas Mixing Layer with One Evaporating Hydrocarbon-Droplet Laden Steam
R. Miller, J. Bellan, JPL, California Institute of Technology, Pasadena, CA

Spray Injection into a Cross-Stream Under Varying Ambient Pressure Conditions
M. Leong, V. McDonell, S. Samuelsen, University of California, Irvine, CA

Observations of Deformation and Breakup of Nonturbulent Round Liquid Jets in Gaseous Crossflows
J. Mazallon, Z. Dai, G. Faeth, The University of Michigan, Ann Arbor, MI

Turbulent Breakup of Hydrocarbon Droplets at Elevated Pressures
T. Prevish, D. Santavicca, The Pennsylvania State University, University Park, PA

Image Analysis Determination of the Mixedness of Coaxially Injected Liquid Jets in Confined Swirling Flows
J. Huh, N. Cernansky, K. Choi, Drexel University, Philadelphia, PA

Session IX. Atomization I
Chairperson: C. Edwards
Molecular Dynamics Simulation of Supercritical LOX Vaporization
T. Kaltz, L. Long, M. Micci, The Pennsylvania State University, University Park, PA

Flash Atomization in Single and Binary Hydrocarbon Sprays
C. Kessler, C. Sloss, S. McCahan, University of Toronto, Toronto, Ontario, Canada

Application of Jet Breakup Models to Systems with Low Liquid-Gas Density Ratios and High Miscibilities
C. Connon, V. Barocas, T. Randolph, University of Colorado, Boulder, CO

Studies on Well-Stirred Mixing of Liquid Droplets in a Lean Direct Injection Mode
K. Choi, J. Huh, Drexel University, Philadelphia, PA; R. Tacina, NASA-Lewis Research Center, Cleveland, OH

Session X. Diagnostics I
Chairperson: J. Martin
Extracting Additional Information from PDPA Measurements of Similar Sprays
P. Noymer, R. Hitron, C. Wu, T. Corcoran, J. Hom, N. Chigier, Carnegie Mellon University, Pittsburgh, PA

The Use of Small Probe Volumes with Phase Doppler Interferometry
P. Strakey, D. Talley, Air Force Research Lab, Edwards AFB, CA; S. Sankar, W. Bachalo, Consultants, Los Altos Hills, CA

Phase Doppler Measurements in Dense Sprays
P. Strakey, D. Talley, Air Force Research Lab, Edwards AFB, CA; W. Bachalo, Consultant, Los Altos Hills, CA

Characterization and Visualization of Hole-to-Hole Variation and Wall Impingement of Diesel Sprays
D. Harrington, General Motor R&D Center, Warren, MI; M.-C. Lai, Wayne State University, Detroit, MI

Program - Wednesday, May 20
Invited Presentation: Dr. Milton Teske, Continuum Dynamics, Inc. "Droplet Dispersion by Lagrangian Methods"
Session XI. Modeling II
Chairperson: W. Eckerle
High-Energy-Density Fuel Blending Strategies and Electrostatic Dispersion of Drops for Cost Reduction and Soot Propensity Control
J. Bellan, K. Harstad, JPL, California Institute of Technology, Pasadena, CA

Numerical Modeling of Cavitating Slot Flows
R. Bunnell, S. Heister, C. Yen, S. Collicott, Purdue University, West Lafayette, IN

The Lewis Number Under Supercritical Conditions
K. Harstad, J. Bellan, JPL, California Institute of Technology, Pasadena, CA

Session XII. Industrial Applications
Chairpersons: D. Michalek and G. Ruff
Cutting Fluid Mist Formation in the Machining Process via Atomization
Y. Yue, J. Sutherland, D. Michalek, Michigan Technological University, Houghton, MI

Challenging Applications for Liquid Waste Incineration
S. Drennan, Coen Company, Burlingame, CA

Case Study Evaluation of Industrial Scale Two-Fluid Nozzles - Classical and New Methods of Evaluation
C. Lipp, Dow Chemical Company, Freeport, TX

Investigation of Carbon Formation Inside Fuel Injector Systems
C.-P. Mao, Delavan Inc., West Des Moines, IA

Role of Combustor Dome Geometry on Spray Structure and Combustion Performance
A. Ateshkadi, V. McDonell, S. Samuelsen, University of California, Irvine, CA

Spray Flame Characteristics for High-Temperature Gas-Assisted Atomization
A. Gupta, M. Megerle, S. Charangudla, C. Presser, University of Maryland, College Park, MD

Extensional Viscosity Measurements of Aqueous Polymer Solutions and Paint Resins
W. Humphrey, N. Chigier, Carnegie Mellon University, Pittsburgh, PA

The Interaction of Nozzle Design and Fluid Physical Properties on the Atomization of Dilute Polymer Solutions Exhibiting Extensional Flow Properties
D. Boger, R. Mun, The University of Melbourne, Parkeville, Victoria, Australia; B. Young, Food Science Australia, Werribee, Victoria, Australia

Session XIII. Atomization II
Chairpersons: P. Sojka and S. McCahan
An Integrated Predictive Model for Droplet Size Distributions
S. Mitra, X. Li, University of Waterloo, Waterloo, Ontario, Canada

Prediction of Drop Size Distributions from First Principles: Joint-pdf Effects
S. Sovani, P. Sojka, Y. Sivathanu, Purdue University, West Lafayette, IN

A Maximum Entropy Moment Closure Approach to Describing Spray Flows
M. Archambault, R. MacCormack, C. Edwards, Stanford University, Stanford, CA

Effect of Fluid Viscosity and Surface Tension on Liquid Sheet Disintegration of a Simplex Pressure-Swirl Atomizer
I.-P. Chung, C. Presser, National Institute of Standards and Technology, Gaithersburg, MD

Dynamics of Drop Formation at Finite Reynolds Numbers
E. Wilkes, O. Basaran, Purdue University, West Lafayette, IN

Development of a Simplified Theory of Coupled Spray/Continuum Flows
C. Edwards, Stanford University, Stanford, CA

Deformation Dynamics of Binary Droplet Collisions
K. Willis, M. Orme, University of California, Irvine, CA

A Drop Shattering Collision Model for Multidimensional Spray Computations
T. Georjon, PSA, Peugeot Citroen, France; R. Reitz, University of Wisconsin-Madison, Madison, WI

Experimental Investigation of Impinging Jets
Z. Ma, D. Holtzclaw, S.-M. Jeng, University of Cincinnati, Cincinnati, OH

Ultrasound-Modulated Two-Fluid Atomization for Uniform Drop Formation
S. Tsai, P. Luu, P. Childs, P. Tam, California State University, Long Beach, CA

Characteristics of a Modulated Spray under High Ambient Pressure
D. Wang, A. Ganji, Berkeley Applied Science and Engineering, San Francisco, CA; C. Sipperley, C. Edwards, Stanford University, Stanford, CA

Session XIV. Diagnostics II
Chairpersons: C. Richards and D. Talley
A Comparison of Methods for the Analysis of Sprays in the 0.5-20 mm Range
T. Corcoran, R. Hitron, W. Humphrey, N. Chigier, Carnegie Mellon University, Pittsburgh, PA

The Design of a Laser-Based Water Droplet Sizer for a Large Wind Tunnel
S. Martin, C. Hess, MetroLaser Inc., Irvine, CA

Size Distribution Measurements Under Conditions of Multiple Scattering with Application to Sprays
T. Harvill, D. Holve, Malvern/Insitec, Inc., San Ramon, CA

The Experimental Comparison of a Single-Liquid High-Pressure Spray Model
J. Hoffman, I. Nouar, D. Schmidt, J. Martin, C. Rutland, University of Wisconsin-Madison, Madison, WI

Capabilities and Limitations of the Rainbow Refractometer, Determined with Temperature Measurements of Water Droplets
K. Heukelbach, J. Hom, N. Chigier, Carnegie Mellon University, Pittsburgh, PA

Non-Orthogonal Optical Spray Pattern Analysis
R. Sellens, R. Deljouravesh, Queen=s University at Kingston, Kingston, Ontario, Canada

Program - Thursday, May 21
Poster Session Abstracts
Characteristics of First Forward Flow Valve Atomization During Cold Start
K. Koederitz, C. Wei, J. Drallmeier, University of Missouri-Rolla, Rolla, MO

Characterization of Direct Injection Gasoline Sprays in Different Ambient and Wall Impingement Conditions
J.-H. Yoo, J.-S. Park, S.-K. Kim, X. Xie, M.-C. Lai, Wayne State University, Detroit, MI

Characterization of Pressure Modulations and Their Effects on Gasoline Port Fuel Injectors
M.-C. Lai, D. Huang, M. Hamid, Wayne State University, Detroit, MI; J. Dressler, Fluid Jet Associates, Dayton, OH

Decompressive Atomization with Supercritical Carbon Dioxide for Spray Drying Applications
K. Nielsen, J. Argyropoulos, C. Gardner, B. Wagner, Union Carbide Corporation, South Charleston, WV

Dispersion and Polydispersity of Droplets in Turbulent Flow
F. Mashayek, University of Hawaii at Manoa, Honolulu, HI

Laser Diagnostics of Automotive Electrostatic Rotary-Bell Paint Spray Transfer Processes
L. Liu, K.-S. Im, M.-C. Lai, Wayne State University, Detroit, MI; N. Sankagiri, T. Loch, H. Nivi, Ford Motor Company, Detroit, MI

Mutual Effects of Oscillations and Evaporation of Liquid Drops
F. Mashayek, University of Hawaii at Manoa, Honolulu, HI

Parametric Studies of Swirler and Venturi Combination on Capillary Liquid Atomization
K. Im, M.-C. Lai, Wayne State University, Detroit, MI

Phase-Resolved Characterization of Pulsed Fuel Sprays
K. Yu, K. Wilson K. Schadow, Naval Air Warfare Center, China Lake, CA; A. Casey, Split-Cycle Technology Ltd., Queensland, Australia

Pneumatic Atomization and Induction Spray Charging of Aqueous Based Viable Pollen Suspensions
S. Law, H. Wetzstein, The University of Georgia, Athens, GA