<?xml version="1.0" encoding="utf-8"?>
<export-example>
  <doc>
    <id>34661</id>
    <completedYear/>
    <publishedYear>2024</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst/>
    <pageLast/>
    <pageNumber>15</pageNumber>
    <edition/>
    <issue/>
    <volume>24/2024</volume>
    <type>articler</type>
    <publisherName>Wiley</publisherName>
    <publisherPlace>Weinheim</publisherPlace>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>2024-11-20</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Capabilities and limitations of smoothed particle hydrodynamics for the simulation of two‐phase flow instabilities</title>
    <abstract language="eng">Smoothed particle hydrodynamics (SPH) is a mesh‐free, Lagrangian particle‐based method that is able to simulate multiphase flows in an economical manner. However, its ability to capture the flow regimes and regime transitions in two phase (liquid‐gas) internal flows, such as pipe or channel flows is not yet generally established. To address this lack in understanding, we first examine a laminar rising bubble case in order to evaluate the fluid‐fluid interface representation and transient interface evolution by the solver. With a focus towards the transition mechanism from a stratified flow regime to a slug flow regime, we investigate the Kelvin–Helmholtz instability (KHI) both qualitatively and quantitatively, initially focusing on a low density ratio () and then extending it to a high density ratio (). For the low density ratio, we conduct an analysis of the temporal evolution and demonstrate that the SPH solver captures the initial exponential growth in qualitative agreement with inviscid linear stability theory (LST) and reference numerical data for shear‐dominated flow with Richardson number . By conducting eight additional simulations for various for the high density ratio, we demonstrate that the numerically obtained parameter value for instability is around , which is in reasonable agreement with the theoretically expected value of . Based on the SPH results obtained for the range , we suggest a simple parameterization of the reduction of the effective growth rate proportional to .</abstract>
    <parentTitle language="eng">Proceedings in Applied Mathematics and Mechanics</parentTitle>
    <identifier type="doi">10.1002/pamm.202400206</identifier>
    <identifier type="issn">1617-7061</identifier>
    <enrichment key="opus_doi_flag">true</enrichment>
    <enrichment key="opus_doi_json">{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2024,11,16]],"date-time":"2024-11-16T05:08:54Z","timestamp":1731733734373,"version":"3.28.0"},"reference-count":36,"publisher":"Wiley","license":[{"start":{"date-parts":[[2024,11,6]],"date-time":"2024-11-06T00:00:00Z","timestamp":1730851200000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Proc Appl Math and Mech"],"abstract":"&lt;jats:title&gt;Abstract&lt;\/jats:title&gt;&lt;jats:p&gt;Smoothed particle hydrodynamics (SPH) is a mesh\u2010free, Lagrangian particle\u2010based method that is able to simulate multiphase flows in an economical manner. However, its ability to capture the flow regimes and regime transitions in two phase (liquid\u2010gas) internal flows, such as pipe or channel flows is not yet generally established. To address this lack in understanding, we first examine a laminar rising bubble case in order to evaluate the fluid\u2010fluid interface representation and transient interface evolution by the solver. With a focus towards the transition mechanism from a stratified flow regime to a slug flow regime, we investigate the Kelvin\u2013Helmholtz instability (KHI) both qualitatively and quantitatively, initially focusing on a low density ratio () and then extending it to a high density ratio (). For the low density ratio, we conduct an analysis of the temporal evolution and demonstrate that the SPH solver captures the initial exponential growth in qualitative agreement with inviscid linear stability theory (LST) and reference numerical data for shear\u2010dominated flow with Richardson number . By conducting eight additional simulations for various  for the high density ratio, we demonstrate that the numerically obtained parameter value for instability is around , which is in reasonable agreement with the theoretically expected value of . Based on the SPH results obtained for the range , we suggest a simple parameterization of the reduction of the effective growth rate proportional to .&lt;\/jats:p&gt;","DOI":"10.1002\/pamm.202400206","type":"journal-article","created":{"date-parts":[[2024,11,7]],"date-time":"2024-11-07T04:54:07Z","timestamp":1730955247000},"update-policy":"http:\/\/dx.doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Capabilities and limitations of smoothed particle hydrodynamics for the simulation of two\u2010phase flow instabilities"],"prefix":"10.1002","author":[{"given":"Rishindra","family":"Vallem","sequence":"first","affiliation":[{"name":"Lehrstuhl Numerische Str\u00f6mungs\u2010 und Gasdynamik Brandenburgische Technische Universit\u00e4t Cottbus\u2010Senftenberg  Cottbus Germany"},{"name":"Scientific Computing Lab (SCL), Energie\u2010Innovationszentrum (EIZ) Brandenburgische Technische Universit\u00e4t Cottbus\u2010Senftenberg  Cottbus Germany"},{"name":"Deutsches Zentrum f\u00fcr Luft\u2010 und Raumfahrt (DLR) Institut f\u00fcr Elektrifizierte Luftfahrtantriebe  Cottbus Germany"}]},{"ORCID":"http:\/\/orcid.org\/0000-0003-0609-8961","authenticated-orcid":false,"given":"Marten","family":"Klein","sequence":"additional","affiliation":[{"name":"Lehrstuhl Numerische Str\u00f6mungs\u2010 und Gasdynamik Brandenburgische Technische Universit\u00e4t Cottbus\u2010Senftenberg  Cottbus Germany"},{"name":"Scientific Computing Lab (SCL), Energie\u2010Innovationszentrum (EIZ) Brandenburgische Technische Universit\u00e4t Cottbus\u2010Senftenberg  Cottbus Germany"}]},{"ORCID":"http:\/\/orcid.org\/0000-0002-6475-6646","authenticated-orcid":false,"given":"Heiko","family":"Schmidt","sequence":"additional","affiliation":[{"name":"Lehrstuhl Numerische Str\u00f6mungs\u2010 und Gasdynamik Brandenburgische Technische Universit\u00e4t Cottbus\u2010Senftenberg  Cottbus Germany"},{"name":"Scientific Computing Lab (SCL), Energie\u2010Innovationszentrum (EIZ) Brandenburgische Technische Universit\u00e4t Cottbus\u2010Senftenberg  Cottbus Germany"}]}],"member":"311","published-online":{"date-parts":[[2024,11,6]]},"reference":[{"key":"e_1_2_6_2_1","doi-asserted-by":"publisher","DOI":"10.1002\/aic.690220105"},{"key":"e_1_2_6_3_1","doi-asserted-by":"publisher","DOI":"10.1017\/jfm.2017.417"},{"key":"e_1_2_6_4_1","unstructured":"Lizarraga\u2010Garc\u00eda E.(2016).A study of Taylor bubbles in vertical and inclined slug flow using multiphase CFD with level set[PhD thesis].Massachusetts Institute of Technology Cambridge MA USA."},{"key":"e_1_2_6_5_1","unstructured":"Lu M.(2015).Experimental and computational study of two\u2010phase slug flow[PhD thesis].Imperial College London UK."},{"key":"e_1_2_6_6_1","doi-asserted-by":"publisher","DOI":"10.2495\/CMEM-V4-N2-114-130"},{"key":"e_1_2_6_7_1","doi-asserted-by":"publisher","DOI":"10.1016\/0021-9991(81)90145-5"},{"key":"e_1_2_6_8_1","doi-asserted-by":"publisher","DOI":"10.1006\/jcph.1994.1155"},{"key":"e_1_2_6_9_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.apm.2016.06.030"},{"key":"e_1_2_6_10_1","doi-asserted-by":"publisher","DOI":"10.1093\/mnras\/181.3.375"},{"key":"e_1_2_6_11_1","doi-asserted-by":"publisher","DOI":"10.1086\/112164"},{"key":"e_1_2_6_12_1","doi-asserted-by":"publisher","DOI":"10.1146\/annurev.aa.30.090192.002551"},{"key":"e_1_2_6_13_1","doi-asserted-by":"publisher","DOI":"10.1146\/annurev-fluid-120710-101220"},{"key":"e_1_2_6_14_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.compfluid.2016.05.029"},{"key":"e_1_2_6_15_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.compfluid.2018.10.004"},{"key":"e_1_2_6_16_1","doi-asserted-by":"publisher","DOI":"10.1002\/nme.3149"},{"key":"e_1_2_6_17_1","doi-asserted-by":"publisher","DOI":"10.1111\/j.1365-2966.2010.16200.x"},{"key":"e_1_2_6_18_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.jcp.2015.12.005"},{"key":"e_1_2_6_19_1","doi-asserted-by":"publisher","DOI":"10.1016\/S0309-1708(03)00030-7"},{"key":"e_1_2_6_20_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.jcp.2008.06.005"},{"key":"e_1_2_6_21_1","doi-asserted-by":"publisher","DOI":"10.1006\/jcph.1999.6246"},{"key":"e_1_2_6_22_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.jcp.2007.07.013"},{"key":"e_1_2_6_23_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.jcp.2017.12.006"},{"key":"e_1_2_6_24_1","doi-asserted-by":"publisher","DOI":"10.1002\/fld.1934"},{"key":"e_1_2_6_25_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.cpc.2014.10.004"},{"key":"e_1_2_6_26_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.cma.2012.10.005"},{"key":"e_1_2_6_27_1","doi-asserted-by":"publisher","DOI":"10.1093\/mnras\/stv2564"},{"key":"e_1_2_6_28_1","doi-asserted-by":"publisher","DOI":"10.1007\/s40571-020-00354-1"},{"volume-title":"Hydrodynamic and hydromagnetic stability","year":"1961","author":"Chandrasekhar S.","key":"e_1_2_6_29_1"},{"key":"e_1_2_6_30_1","doi-asserted-by":"publisher","DOI":"10.1017\/CBO9780511809064"},{"key":"e_1_2_6_31_1","doi-asserted-by":"publisher","DOI":"10.1088\/0067-0049\/201\/2\/18"},{"key":"e_1_2_6_32_1","doi-asserted-by":"publisher","DOI":"10.1093\/mnras\/stz2042"},{"key":"e_1_2_6_33_1","doi-asserted-by":"publisher","DOI":"10.1093\/mnras\/stz379"},{"key":"e_1_2_6_34_1","doi-asserted-by":"publisher","DOI":"10.1063\/1.3372843"},{"key":"e_1_2_6_35_1","doi-asserted-by":"publisher","DOI":"10.1016\/0301-9322(93)90092-9"},{"first-page":"425","volume-title":"Advances in Fluid Mechanics III","year":"2000","author":"Dinh A. T.","key":"e_1_2_6_36_1"},{"key":"e_1_2_6_37_1","doi-asserted-by":"publisher","DOI":"10.1017\/jfm.2011.206"}],"container-title":["PAMM"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/pdf\/10.1002\/pamm.202400206","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2024,11,15]],"date-time":"2024-11-15T05:09:02Z","timestamp":1731647342000},"score":1,"resource":{"primary":{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/10.1002\/pamm.202400206"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2024,11,6]]},"references-count":36,"alternative-id":["10.1002\/pamm.202400206"],"URL":"http:\/\/dx.doi.org\/10.1002\/pamm.202400206","archive":["Portico"],"relation":{},"ISSN":["1617-7061","1617-7061"],"issn-type":[{"type":"print","value":"1617-7061"},{"type":"electronic","value":"1617-7061"}],"subject":[],"published":{"date-parts":[[2024,11,6]]},"assertion":[{"value":"2024-05-31","order":0,"name":"received","label":"Received","group":{"name":"publication_history","label":"Publication History"}},{"value":"2024-10-21","order":2,"name":"accepted","label":"Accepted","group":{"name":"publication_history","label":"Publication History"}},{"value":"2024-11-06","order":3,"name":"published","label":"Published","group":{"name":"publication_history","label":"Publication History"}}]}}</enrichment>
    <enrichment key="opus_crossrefDocumentType">journal-article</enrichment>
    <enrichment key="opus_crossrefLicence">http://creativecommons.org/licenses/by/4.0/</enrichment>
    <enrichment key="opus_import_origin">crossref</enrichment>
    <enrichment key="opus_doiImportPopulated">PersonAuthorFirstName_1,PersonAuthorLastName_1,PersonAuthorFirstName_2,PersonAuthorLastName_2,PersonAuthorIdentifierOrcid_2,PersonAuthorFirstName_3,PersonAuthorLastName_3,PersonAuthorIdentifierOrcid_3,PublisherName,TitleMain_1,Language,TitleAbstract_1,TitleParent_1,PublishedYear,IdentifierIssn,Enrichmentopus_crossrefLicence</enrichment>
    <enrichment key="BTU">an der BTU erstellt / created at BTU</enrichment>
    <enrichment key="Referiert">Beitrag ist referiert / Article peer-reviewed</enrichment>
    <enrichment key="Publikationsweg">Open Access</enrichment>
    <enrichment key="RelationnotEU">85056897; 03SF0693A</enrichment>
    <enrichment key="BTUfunderNamenotEU">Bundesministerium für Bildung und Forschung (BMBF)</enrichment>
    <enrichment key="opus.source">doi-import</enrichment>
    <enrichment key="Fprofil">1 Energiewende und Dekarbonisierung / Energy Transition and Decarbonisation</enrichment>
    <enrichment key="Fprofil">4 Künstliche Intelligenz und Sensorik / Artificial Intelligence and Sensor Technology</enrichment>
    <enrichment key="opus.doi.autoCreate">false</enrichment>
    <enrichment key="opus.urn.autoCreate">false</enrichment>
    <author>
      <firstName>Rishindra</firstName>
      <lastName>Vallem</lastName>
    </author>
    <submitter>
      <firstName>Marten</firstName>
      <lastName>Klein</lastName>
    </submitter>
    <author>
      <firstName>Marten</firstName>
      <lastName>Klein</lastName>
    </author>
    <author>
      <firstName>Heiko</firstName>
      <lastName>Schmidt</lastName>
    </author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Smoothed Particle Hydrodynamics</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>two-phase flow</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Kelvin-Helmholtz instability</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>rising bubble</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>growth rate</value>
    </subject>
    <collection role="institutes" number="3504">FG Numerische Strömungs- und Gasdynamik</collection>
    <collection role="institutes" number="7006">Energie-Innovationszentrum / Scientific Computing Lab</collection>
  </doc>
  <doc>
    <id>32024</id>
    <completedYear/>
    <publishedYear>2023</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>158</pageFirst>
    <pageLast>159</pageLast>
    <pageNumber/>
    <edition/>
    <issue/>
    <volume>21/2023</volume>
    <type>conferenceobject_noref</type>
    <publisherName>Deutsche Strömungsmechanische Arbeitsgemeinschaft (STAB)</publisherName>
    <publisherPlace>Göttingen, Germany</publisherPlace>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>2023-11-20</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Numerical modeling and simulation of two-phase internal flow instabilities using Smoothed Particle Hydrodynamics (SPH)</title>
    <parentTitle language="deu">STAB Jahresbericht 2023</parentTitle>
    <identifier type="url">https://www.dlr.de/as/Portaldata/5/Resources/dokumente/veranstaltungen/stab_workshop/Jahresbericht2023.pdf</identifier>
    <identifier type="url">https://www.dlr.de/as/desktopdefault.aspx/tabid-128/268_read-1678/</identifier>
    <enrichment key="BTU">an der BTU erstellt / created at BTU</enrichment>
    <enrichment key="Publikationsweg">Open Access</enrichment>
    <enrichment key="opus.source">publish</enrichment>
    <enrichment key="opus.doi.autoCreate">false</enrichment>
    <enrichment key="opus.urn.autoCreate">false</enrichment>
    <enrichment key="Fprofil">1 Energiewende und Dekarbonisierung / Energy Transition and Decarbonisation</enrichment>
    <enrichment key="Fprofil">4 Künstliche Intelligenz und Sensorik / Artificial Intelligence and Sensor Technology</enrichment>
    <author>
      <firstName>Rishindra</firstName>
      <lastName>Vallem</lastName>
    </author>
    <submitter>
      <firstName>Marten</firstName>
      <lastName>Klein</lastName>
    </submitter>
    <author>
      <firstName>Marten</firstName>
      <lastName>Klein</lastName>
    </author>
    <author>
      <firstName>Heiko</firstName>
      <lastName>Schmidt</lastName>
    </author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Smoothed Particle Hydrodynamics (SPH)</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Kelvin-Helmholtz instability</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>linear stability analysis</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>two-phase flow</value>
    </subject>
    <collection role="institutes" number="3504">FG Numerische Strömungs- und Gasdynamik</collection>
    <collection role="institutes" number="7006">Energie-Innovationszentrum / Scientific Computing Lab</collection>
  </doc>
</export-example>
