Numerical Simulation on Atomizing Performance of Pressure Swirl Nozzles in Ethoxylation Reactors
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Zhongjing Shi
and
Qinzhu Chen
Abstract
Initial breakup model(IBM) approach in conjunction with Volume of fluid(VOF) is developed to model the special nozzle in ethoxylation reactors, which has to meet the requirement of low pressure drop, high volume flow rate, little droplets size and large field. For the VOF model, Realized k-ε is selected and has higher accuracy of simulation for swirling flows by comparing with Standard and RNG k-ε models. IBM is written as a user defined function(UDF) and embedded to study the extra breakup from ligaments to droplets and forecast the droplets size distribution. As the experiments have been conducted already, the simulation results have a good agreement with the experimental results in flow rate, spray cone angle and droplets size distribution. At the same time, the atomization process and atomization mechanism of the ethoxylation reaction nozzle were analyzed. Then the VOF-IBM methodology can be used to predict the spray characteristics of the nozzles with different structure and the optimal structure for ethoxylation reaction was found by orthogonal test and fuzzy comprehensive evaluation. In addition, the primary and secondary order of the influencing factors for discharge coefficient, spray cone angle and Sauter mean diameter are respectively gained. The VOF-IBM is instructive for the optimization design of ethoxylation reaction.
Reference
Delteil, J., S. Vincent, A. Erriguible, and P. Subra-Paternault. 2011. “Numerical Investigations in Rayleigh Breakup of Round Liquid Jets with VOF Methods.” Computers & Fluids 50 (1):10–23.10.1016/j.compfluid.2011.05.010Search in Google Scholar
Dombrowski, N., and P. C. Hooper. 1962. “The Effect of Ambient Density on Drop Formation in Sprays.” Chemical Engineering Sciences 17 (4):291–305.10.1016/0009-2509(62)85008-8Search in Google Scholar
Dombrowski, N., and W. R. Johns. 1963. “The Aerodynamic Instability and Disintegration of Viscous Liquid Sheets.” Chemical Engineering Sciences 18 (4):203–214.10.1016/0009-2509(63)85005-8Search in Google Scholar
Hagerty, W. W., and J. F. Shea. 1955. “A Study of the Stability of Plane Fluid Sheets.” Journal Applications Mechanisms 22 (3):509–514.10.1115/1.4011145Search in Google Scholar
Ishimoto, J., K. Ohira, K. Okabayashi, and K. Chitose. 2008. “Integrated Numerical Prediction of Atomization Process of Liquid Hydrogen Jet.” Cryogenics 48 (5):238–247.10.1016/j.cryogenics.2008.03.006Search in Google Scholar
Lan, Z., D. Zhu, W. Tian, G. Su, and S. Qiu. 2014. “Experimental Study on Spray Characteristics of Pressure-Swirl Nozzles in Pressurizer.” Annals Nuclear Energy 63:215–227.10.1016/j.anucene.2013.07.048Search in Google Scholar
Ménard, T., S. Tanguy, and A. Berlemont. 2007. “Coupling Level set/VOF/ghost Fluid Methods: Validation and Application to 3D Simulation of the Primary Break-Up of a Liquid Jet.” International Journal Multiphas Flow 33 (5):510–524.10.1016/j.ijmultiphaseflow.2006.11.001Search in Google Scholar
Park, H., S. S. Yoon, and S. D. Heister. 2005. “A Nonlinear Atomization Model for Computation of Drop Size Distributions and Spray Simulations.” International journal for numerical methods in fluids 48 (11):1219–1240.10.1002/fld.972Search in Google Scholar
Reitz, R. D. 2004. “Modeling the Primary Breakup of High-Speed Jets.” Atomization and sprays 14 (1):53–80.10.1615/AtomizSpr.v14.i1.40Search in Google Scholar
Salzano, E., M. Di Serio, and E. Santacesaria. 2007. “The Role of Recirculation Loop on the Risk of Ethoxylation Processes.” Journal Loss Prevent Proceedings 20 (3):238–250.10.1016/j.jlp.2007.03.016Search in Google Scholar
Senecal, P. K., D. P. Schmidt, I. Nouar, C. J. Rutland, R. D. Reitz, and M. L. Corradini. 1999. “Modeling High-Speed Viscous Liquid Sheet Atomization.” International Journal Multiphas Flow 25 (6):1073–1097.10.1016/S0301-9322(99)00057-9Search in Google Scholar
Shi, Z., X. Wang, Q. Chen, Y. Xiong, S. Chen, and X. Meng. 2016. “Experimental Study on Atomizing and Reaction Performance of Pressure Swirl Nozzles in Ethoxylation Reactor.” International Journal Chemical Reactions Engineering 14 (5):965–974.10.1515/ijcre-2015-0148Search in Google Scholar
Squire, H. B. 1953. “Investigation of the Instability of a Moving Liquid Film.” British Journal of Applied Physics 4 (6):167.10.1088/0508-3443/4/6/302Search in Google Scholar
Weber, C. 1931. “Zum Zerfall Eines Flüssigkeitsstrahles.” ZAMM-J Applications Mathematical Mechanisms 11 (2):136–154.10.1002/zamm.19310110207Search in Google Scholar
Yoon, S. S. 2005. “Droplet Distributions at the Liquid Core of a Turbulent Spray.” Physical Fluids 17 (3):62–646.10.1063/1.1852577Search in Google Scholar
Youngs, D. L. 1982. Time-Dependent Multi-Material Flow with Large Fluid Distortion. Numerical Methods in Fluid Dynamics 273–285.Search in Google Scholar
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Articles in the same Issue
- Surface Characterization of Sulfated Iron Oxide and Its Synthesis of Biodiesel Under Microwave Radiation
- Surface Modification of Nanocrystalline Zeolite X and Its Application as Catalyst in Synthesis of Cumene in a Packed Bed Flow Reactor: A Kinetic Study
- Effects of CaO on the Yield and Thermal Properties of PANI Nanofibers
- Preparation and TG/DTG, FT-IR, SEM, BET Surface Area, Iodine Number and Methylene Blue Number Analysis of Activated Carbon from Pistachio Shells by Chemical Activation
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Fischer-Tropsch synthesis: Variation of Co/
- Numerical Simulation on Atomizing Performance of Pressure Swirl Nozzles in Ethoxylation Reactors
- Kinetic Modeling of Indian Rice Husk Pyrolysis
- Preparation of Activated Carbons from Walnut Shell by Fast Activation with H3PO4: Influence of Fluidization of Particles
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