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Modeling Droplet Collision with Adaptive Meshing and Updated Outcomes
Technical Paper
2004-01-0533
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Improved numerical methods and physical models have been applied to droplet collision modeling. Contrary to the common practice of using the fixed gas phase mesh to calculate droplet collision incidence, a new algorithm generates a collision mesh independent of the gas phase mesh at each time step. By partitioning collision cells according to the number density of parcels, the algorithm is capable of achieving higher spatial resolution than that of the gas phase mesh. At the same time this method maintains an adequate statistical sample of parcels in the collision cells to ensure statistically accurate results. The continual random rotation of the mesh ensures that parcels that are near each other will, on average, be in the same collision cell. This produces the physically reasonable result that parcels in close proximity should have the opportunity to collide. Another important advantage of the algorithm is that it can be applied to any orifice configuration. The influence of the adaptive mesh on high-pressure non-vaporizing diesel sprays was explored. To simulate satellite droplet formation upon collision, a modification is made to an existing droplet shattering model.
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Hou, S. and Schmidt, D., "Modeling Droplet Collision with Adaptive Meshing and Updated Outcomes," SAE Technical Paper 2004-01-0533, 2004, https://doi.org/10.4271/2004-01-0533.Also In
References
- Gavaises M. Theodorakakos A. Bergeles G. Brenn G. “Evaluation of the Effect of Droplet Collision on Spray Mixing” Proc. Inst. Mech. Engrs . 210 465 475 1996
- McInnes J. Bracco F. V. “Comparisons of Deterministic and Stochastic Computations of Drop Collisions in Dense Sprays” Numerical Approaches to Combustion Modeling Oran E. S. Boris J. P. 135 Progress in Astronautics and Aeronautics 615 642 1991
- Amsden A. A. O'Rourke P. J. Butler T. D. “KIVA-II A Computer Program for Chemically Reactive Flows with Sprays” Los Alamos National Laboratory 1989
- O'Rourke P. J. “Collective Drop Effects on Vaporizing Liquid Sprays” Department of Mechanical and Aerospace Engineering, Princeton University 1981
- Schmidt D. P. Rutland C. J. “A New Droplet Collision Algorithm” Journal of Computational Physics 164 62 68 2000
- Hieber S. E. “An Investigation of the Mesh Dependence of the Stochastic Discrete Droplet Model Applied to Dense Liquid Sprays” Department of Mathematical Science, Michigan Technological University 2001
- Nordin N. “Complex Chemistry Modeling of Diesel Spray Combustion” Chalmers University of Technology 2000
- Aneja R. Abraham J. “How Far does the Liquid Penetrate in a Diesel Engine: Computed Results vs. Measurements?” Combustion Science and Technology 138 233 255 1998
- Bird G. A. “Perception of Numerical Methods in Rarefied Gas Dynamics” Progress in Astronautics and Aeronautics 118 211 1989
- Abraham J. “What is Adequate Resolution in the Numerical Computations of Transient Jets?” SAE Technical Paper 970051 1997
- Schmidt D. P. Rutland C. J. “Reducing Grid Dependency in Droplet Collision Calculations” Fall ASME ICE Meeting Argonne National Laboratory 2001
- Brazier-Smith P. Jennings S. Latham J. “The Interaction of Falling Rain Drops: Coalescence” Proc. Rod. Soc. Lond A326 393 408 1972
- Ashgriz N. Poo J. Y. “Coalescence and Separation in Binary Collisions of Liquid Drops” Journal of Fluid Mechanics 221 183 204 1990
- Jiang Y. Umemura A. Law C. K. “An Experimental Investigation on the Collision Behavior of Hydrocarbon Droplets” Journal of Fluid Mechanics 234 171 190 1992
- Qian J. Law C. K. “Regimes of Coalescence and Separation in Droplet Collision” Journal of Fluid Mechanics 331 59 80 1997
- Post S. Abraham J. “Modeling the Outcome of Drop-Drop Collisions in Diesel Sprays,” International Journal of Multiphase Flow vol. 28 ( 6 ) 997 1019 2002
- Estrade J.-P. Carentz Herve Lavergne G. Biscos Y. “Experimental Investigation of Dynamic Binary Collision of Ethanol Droplets - A Model for Droplet Coalescence and Bouncing” International Journal of Heat and Fluid Flow 20 486 491 1999
- Hung C. C. Martin J. K. “Collisional Behavior of Hydrocarbon Droplets” ILASS Americas Conference 1997
- Georjon T. L. Reitz R. D. “A Drop-Shattering Collision Model for Multidimensional Spray Computations” Atomization and Sprays 9 231 254 1999
- Issa R. I. “Solution of the Implicitly Discretised Fluid Flow Equations by Operator-Splitting” Journal of Computational Physics 62 1985
- Bauman S. D. “A Spray Model for an Adaptive Mesh Refinement Code” University of Wisconsin Madison 2001
- Sirignano W. A. Fluid Dynamics and Transport of Droplets and Sprays 182 183 Cambridge University 1999
- Are S. Hou S. Schmidt D. P. “Second Order Spatial Accuracy in Spray Calculations” ICLASS Sorrento, Italy 2003
- Zhou Q. Leschziner M. A. “A Lagrangian Particle Dispersion Model Based On A Time-Correlated Stochastic Approach” 121 Gas-Solid Flows ASME 1991
- Hung C. C. Martin J. K. “Spray Behavior and Droplet Dynamics of a Small Diameter Orifice Spray System” ILASS Americas , 8 th Annual Conference on Liquid Atomization and Spray Systems May 1997
- Post S. L. Abraham J. “Modeling Collision Among Drops with a Non-Uniform Spatial Distribution” ILASS Americas , 15 th Annual Conference on Liquid Atomization and Spray Systems Madison, WI May 2002
- Garcia A. L. “Numerical Methods for Physics” 2nd Prentice Hall Upper Saddle River, New Jersey 07458 1994
- Low T. B. List R. “Collision, Coalescence and Breakup of Raindrops” Part I: Experimentally Established Coalescence Efficiencies and Fragment Size Distributions in Breakup Journal of Atmospheric Sciences 39 1591 1606 1982
- Park R. W. “Behavior of Water Drops Colliding in Humid Nitrogen” University of Wisconsin Madison 1970
- Orme M. “Experiments on Droplet Collision, Bounce, Coalescence and Disruption” Prog. Energy Combust. Sci. 23 65 79 1997
- Baik S. Blanchard P. J. Corradini M. L. “Development of Micro-Diesel Injector Nozzles via MEMS Technology and Effects on Spray Characteristics” Engine Research Center and Engineering Physics, University of Wisconsin Madison 2001
- Schmidt D. P. Corradini M. L. “Analytical Prediction of the Exit Flow of Cavitating Orifices” Atomization and Sprays 7 603 616 1997
- Reitz R. D. Diwakar R. “Structure of High-Pressure Fuel Sprays” SAE Technical Paper 870598 1987
- Reitz R. D. “Modeling Atomization Process in High Pressure Vaporizing Sprays” Atomization and Spray Technology 3 309 337 1987
- Aumann Richard McCracken Michael Abraham John “An Evaluation of a Composite Model for Predicting Drop-Drop Collision Outcomes in Multidimensional Spray Computations,” SAE Paper 2002-01-0943 2002