<?xml version="1.0" encoding="utf-8"?>
<export-example>
  <doc>
    <id>201</id>
    <completedYear>2017</completedYear>
    <publishedYear/>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst/>
    <pageLast/>
    <pageNumber/>
    <edition/>
    <issue/>
    <volume/>
    <type>preprint</type>
    <publisherName/>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>1</belongsToBibliography>
    <completedDate>2017-11-16</completedDate>
    <publishedDate>2017-11-19</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Polyhedral 3D Models for compressors in gas networks</title>
    <abstract language="eng">Compressor machines are crucial elements in a gas transmission network, required to compensate for the pressure loss caused by friction in the pipes. Modelling all physical and technical details of a compressor machine involves a large amount of nonlinearity, which makes it hard to use such models in the optimization of large-scale gas networks. In this paper, we are going to describe a modelling approach for the operating range of a compressor machine, starting from a physical reference model and resulting in a polyhedral representation in the 3D space of mass flow throughput as well as in- and outlet pressure.</abstract>
    <author>Tom Walther</author>
    <author>Benjamin Hiller</author>
    <author>René Saitenmacher</author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>gas compressor modeling</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>polyhedral model</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>accuracy</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>z factor</value>
    </subject>
    <collection role="institutes" number="">Zuse-Institut Berlin (ZIB)</collection>
    <collection role="subprojects" number="">A04</collection>
    <file>https://opus4.kobv.de/opus4-trr154/files/201/ZR-17-66.pdf</file>
  </doc>
</export-example>
