<?xml version="1.0" encoding="UTF-8"?><?xml-stylesheet type="text/xsl" href="static/style.xsl"?><OAI-PMH xmlns="http://www.openarchives.org/OAI/2.0/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/ http://www.openarchives.org/OAI/2.0/OAI-PMH.xsd"><responseDate>2026-09-19T22:13:56Z</responseDate><request verb="GetRecord" identifier="oai:dspace.mit.edu:1721.1/123723" metadataPrefix="dim">https://dspace.mit.edu/server/oai/request</request><GetRecord><record><header><identifier>oai:dspace.mit.edu:1721.1/123723</identifier><datestamp>2026-06-17T14:42:35Z</datestamp><setSpec>com_1721.1_7582</setSpec><setSpec>com_1721.1_7581</setSpec><setSpec>col_1721.1_131022</setSpec></header><metadata><dim:dim xmlns:dim="http://www.dspace.org/xmlns/dspace/dim" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:doc="http://www.lyncode.com/xoai" xsi:schemaLocation="http://www.dspace.org/xmlns/dspace/dim http://www.dspace.org/schema/dim.xsd">
   <dim:field mdschema="dc" element="contributor" qualifier="advisor" lang="en_US">Martin Z. Bazant.</dim:field>
   <dim:field mdschema="dc" element="contributor" qualifier="author" lang="en_US">Gu, Zongyu,Ph.D.Massachusetts Institute of Technology.</dim:field>
   <dim:field mdschema="dc" element="contributor" qualifier="other" lang="en_US">Massachusetts Institute of Technology. Department of Chemical Engineering.</dim:field>
   <dim:field mdschema="dc" element="contributor" qualifier="department" lang="en_US">Massachusetts Institute of Technology. Department of Chemical Engineering</dim:field>
   <dim:field mdschema="dc" element="date" qualifier="accessioned">2020-02-10T21:38:38Z</dim:field>
   <dim:field mdschema="dc" element="date" qualifier="available">2020-02-10T21:38:38Z</dim:field>
   <dim:field mdschema="dc" element="date" qualifier="copyright" lang="en_US">2019</dim:field>
   <dim:field mdschema="dc" element="date" qualifier="issued" lang="en_US">2019</dim:field>
   <dim:field mdschema="dc" element="identifier" qualifier="uri">https://hdl.handle.net/1721.1/123723</dim:field>
   <dim:field mdschema="dc" element="identifier" qualifier="oclc" lang="en_US">1138228067</dim:field>
   <dim:field mdschema="dc" element="description" lang="en_US">Thesis: Ph. D., Massachusetts Institute of Technology, Department of Chemical Engineering, 2019</dim:field>
   <dim:field mdschema="dc" element="description" lang="en_US">Cataloged from PDF version of thesis.</dim:field>
   <dim:field mdschema="dc" element="description" lang="en_US">Includes bibliographical references (pages 161-177).</dim:field>
   <dim:field mdschema="dc" element="description" qualifier="abstract" lang="en_US">We propose a novel probabilistic framework based on pore-scale probabilistic events to derive a theory of hysteresis in multiphase flow in porous media. In particular, we define the pore-space accessivity to contrast the serial and parallel arrangement of different-radius pore slices, and the radius-resolved saturations to detail the pore-scale distribution of immiscible fluids. We show that accessivity can be measured by mercury cyclic porosimetry. Our microscopic theory of hysteresis produces simple formulae that are suitable for use as hysteresis-enabling constitutive laws for capillary pressure and relative permeabilities in conventional continuum simulations of multiphase flow.</dim:field>
   <dim:field mdschema="dc" element="description" qualifier="statementofresponsibility" lang="en_US">by Zongyu Gu.</dim:field>
   <dim:field mdschema="dc" element="description" qualifier="degree" lang="en_US">Ph.D.</dim:field>
   <dim:field mdschema="dc" element="description" qualifier="collection" lang="en_US">Ph.D. Massachusetts Institute of Technology, Department of Chemical Engineering</dim:field>
   <dim:field mdschema="dc" element="format" qualifier="extent" lang="en_US">177 pages</dim:field>
   <dim:field mdschema="dc" element="language" qualifier="iso" lang="en_US">eng</dim:field>
   <dim:field mdschema="dc" element="publisher" lang="en_US">Massachusetts Institute of Technology</dim:field>
   <dim:field mdschema="dc" element="rights" lang="en_US">MIT theses are protected by copyright. They may be viewed, downloaded, or printed from this source but further reproduction or distribution in any format is prohibited without written permission.</dim:field>
   <dim:field mdschema="dc" element="rights" qualifier="uri" lang="en_US">http://dspace.mit.edu/handle/1721.1/7582</dim:field>
   <dim:field mdschema="dc" element="subject" lang="en_US">Chemical Engineering.</dim:field>
   <dim:field mdschema="dc" element="title" lang="en_US">Physics-based models of hysteresis in multiphase flow in porous media</dim:field>
   <dim:field mdschema="dc" element="type" lang="en_US">Thesis</dim:field>
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   <dim:field mdschema="dspace" element="imported" lang="en_US">2020-02-10T21:38:33Z</dim:field>
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   <dim:field mdschema="mit" element="thesis" qualifier="degree" lang="en_US">Doctoral</dim:field>
   <dim:field mdschema="mit" element="thesis" qualifier="department" lang="en_US">ChemEng</dim:field>
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	&lt;Language>eng&lt;/Language>
   	&lt;Title>Physics-based models of hysteresis in multiphase flow in porous media&lt;/Title>
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   	&lt;PublicationDate>2019&lt;/PublicationDate>
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        	&lt;DisplayName>Gu, Zongyu,Ph.D.Massachusetts Institute of Technology.&lt;/DisplayName>
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    &lt;Keyword>Chemical Engineering.&lt;/Keyword>
   	&lt;Abstract>We propose a novel probabilistic framework based on pore-scale probabilistic events to derive a theory of hysteresis in multiphase flow in porous media. In particular, we define the pore-space accessivity to contrast the serial and parallel arrangement of different-radius pore slices, and the radius-resolved saturations to detail the pore-scale distribution of immiscible fluids. We show that accessivity can be measured by mercury cyclic porosimetry. Our microscopic theory of hysteresis produces simple formulae that are suitable for use as hysteresis-enabling constitutive laws for capillary pressure and relative permeabilities in conventional continuum simulations of multiphase flow.&lt;/Abstract>
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