Three-dimensional numerical investigation of a droplet impinging normally onto a wall film
The paper presents a three-dimensional numerical investigation of a droplet impinging normally onto a wall film. The numerical method is based on the finite volume solution of the Navier–Stokes equations coupled with the volume of fluid method (VOF) and utilizing an adaptive local grid refinement te...
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Veröffentlicht in: | Journal of computational physics 2007-07, Vol.225 (1), p.322-341 |
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creator | Nikolopoulos, N. Theodorakakos, A. Bergeles, G. |
description | The paper presents a three-dimensional numerical investigation of a droplet impinging normally onto a wall film. The numerical method is based on the finite volume solution of the Navier–Stokes equations coupled with the volume of fluid method (VOF) and utilizing an adaptive local grid refinement technique for tracking more accurately the liquid–gas interface. The results are compared with available experimental data for integral quantities such as the lamella temporal development. Two mechanisms are identified leading to secondary droplet formation; in the initial and intermediate stages of splashing secondary droplet formation is according to Rayleigh instability while at later times surface tension effects contribute further to secondary atomization. Moreover, the influence of Weber number on the impingement process is investigated and correlations for the diameter and number of secondary droplets are proposed. |
doi_str_mv | 10.1016/j.jcp.2006.12.002 |
format | Article |
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The numerical method is based on the finite volume solution of the Navier–Stokes equations coupled with the volume of fluid method (VOF) and utilizing an adaptive local grid refinement technique for tracking more accurately the liquid–gas interface. The results are compared with available experimental data for integral quantities such as the lamella temporal development. Two mechanisms are identified leading to secondary droplet formation; in the initial and intermediate stages of splashing secondary droplet formation is according to Rayleigh instability while at later times surface tension effects contribute further to secondary atomization. Moreover, the influence of Weber number on the impingement process is investigated and correlations for the diameter and number of secondary droplets are proposed.</description><subject>ATOMIZATION</subject><subject>CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS</subject><subject>Computational techniques</subject><subject>CORRELATIONS</subject><subject>DEPOSITION</subject><subject>DROPLETS</subject><subject>Exact sciences and technology</subject><subject>IMPINGEMENT</subject><subject>INSTABILITY</subject><subject>INTEGRALS</subject><subject>INTERFACES</subject><subject>Lamella</subject><subject>Liquid film</subject><subject>Mathematical methods in physics</subject><subject>MATHEMATICAL SOLUTIONS</subject><subject>NAVIER-STOKES EQUATIONS</subject><subject>Physics</subject><subject>Splashing</subject><subject>SURFACE TENSION</subject><subject>THREE-DIMENSIONAL CALCULATIONS</subject><subject>Volume of fluid method</subject><subject>WALLS</subject><issn>0021-9991</issn><issn>1090-2716</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2007</creationdate><recordtype>article</recordtype><recordid>eNp9kEGLFDEQhYMoOK7-AG8NorduK8l00sGTLKu7sOBlvXgJmXRlN0N30iY9K_vvrWYWvAmBSipfvbw8xt5z6Dhw9fnYHf3SCQDVcdEBiBdsx8FAKzRXL9mOOrw1xvDX7E2tRwAY-v2wY7_uHgpiO8YZU405ualJpxlL9LSL6RHrGu_dSjdNDo1rxpKXCdcmzktM97SalMvspumpyWnNRPyhQxPiNL9lr4KbKr57rhfs57eru8vr9vbH95vLr7etl4NaW618GPUQgMwZCJprIQ69G9AEtT9I6UXvzQjcSVBCSmOEBDxo0E4deuS9vGAfzrqZvNrq44r-weeU0K9WbLK90UR9OlNLyb9P9C07x-pxmlzCfKpWApCyAgL5GfQl11ow2KXE2ZUny8FuWdujpaztlrXlwlKyNPPxWdxVCi4Ul3ys_wYHs9eD2hP35cwh5fEYsWx2MXkcY9ncjjn-55W_f4eTaA</recordid><startdate>20070701</startdate><enddate>20070701</enddate><creator>Nikolopoulos, N.</creator><creator>Theodorakakos, A.</creator><creator>Bergeles, G.</creator><general>Elsevier Inc</general><general>Elsevier</general><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7SC</scope><scope>7SP</scope><scope>7U5</scope><scope>8FD</scope><scope>JQ2</scope><scope>L7M</scope><scope>L~C</scope><scope>L~D</scope><scope>OTOTI</scope></search><sort><creationdate>20070701</creationdate><title>Three-dimensional numerical investigation of a droplet impinging normally onto a wall film</title><author>Nikolopoulos, N. ; Theodorakakos, A. ; Bergeles, G.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c386t-76cfd78f099190f71722b5a8e9f64b33c25c9d01a30623399230eb707a6b5e153</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2007</creationdate><topic>ATOMIZATION</topic><topic>CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS</topic><topic>Computational techniques</topic><topic>CORRELATIONS</topic><topic>DEPOSITION</topic><topic>DROPLETS</topic><topic>Exact sciences and technology</topic><topic>IMPINGEMENT</topic><topic>INSTABILITY</topic><topic>INTEGRALS</topic><topic>INTERFACES</topic><topic>Lamella</topic><topic>Liquid film</topic><topic>Mathematical methods in physics</topic><topic>MATHEMATICAL SOLUTIONS</topic><topic>NAVIER-STOKES EQUATIONS</topic><topic>Physics</topic><topic>Splashing</topic><topic>SURFACE TENSION</topic><topic>THREE-DIMENSIONAL CALCULATIONS</topic><topic>Volume of fluid method</topic><topic>WALLS</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Nikolopoulos, N.</creatorcontrib><creatorcontrib>Theodorakakos, A.</creatorcontrib><creatorcontrib>Bergeles, G.</creatorcontrib><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>Computer and Information Systems Abstracts</collection><collection>Electronics & Communications Abstracts</collection><collection>Solid State and Superconductivity Abstracts</collection><collection>Technology Research Database</collection><collection>ProQuest Computer Science Collection</collection><collection>Advanced Technologies Database with Aerospace</collection><collection>Computer and Information Systems Abstracts Academic</collection><collection>Computer and Information Systems Abstracts Professional</collection><collection>OSTI.GOV</collection><jtitle>Journal of computational physics</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Nikolopoulos, N.</au><au>Theodorakakos, A.</au><au>Bergeles, G.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Three-dimensional numerical investigation of a droplet impinging normally onto a wall film</atitle><jtitle>Journal of computational physics</jtitle><date>2007-07-01</date><risdate>2007</risdate><volume>225</volume><issue>1</issue><spage>322</spage><epage>341</epage><pages>322-341</pages><issn>0021-9991</issn><eissn>1090-2716</eissn><abstract>The paper presents a three-dimensional numerical investigation of a droplet impinging normally onto a wall film. The numerical method is based on the finite volume solution of the Navier–Stokes equations coupled with the volume of fluid method (VOF) and utilizing an adaptive local grid refinement technique for tracking more accurately the liquid–gas interface. The results are compared with available experimental data for integral quantities such as the lamella temporal development. Two mechanisms are identified leading to secondary droplet formation; in the initial and intermediate stages of splashing secondary droplet formation is according to Rayleigh instability while at later times surface tension effects contribute further to secondary atomization. Moreover, the influence of Weber number on the impingement process is investigated and correlations for the diameter and number of secondary droplets are proposed.</abstract><cop>Amsterdam</cop><pub>Elsevier Inc</pub><doi>10.1016/j.jcp.2006.12.002</doi><tpages>20</tpages></addata></record> |
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subjects | ATOMIZATION CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS Computational techniques CORRELATIONS DEPOSITION DROPLETS Exact sciences and technology IMPINGEMENT INSTABILITY INTEGRALS INTERFACES Lamella Liquid film Mathematical methods in physics MATHEMATICAL SOLUTIONS NAVIER-STOKES EQUATIONS Physics Splashing SURFACE TENSION THREE-DIMENSIONAL CALCULATIONS Volume of fluid method WALLS |
title | Three-dimensional numerical investigation of a droplet impinging normally onto a wall film |
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