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  <title>sub-grid scale horizontal eddy viscosity</title>
  <link rel="self" href="https://dlt-acc.firelay.cloud/c/message_boards/find_thread?p_l_id=3231581&amp;threadId=5470791" />
  <subtitle>sub-grid scale horizontal eddy viscosity</subtitle>
  <id>https://dlt-acc.firelay.cloud/c/message_boards/find_thread?p_l_id=3231581&amp;threadId=5470791</id>
  <updated>2026-05-15T15:09:19Z</updated>
  <dc:date>2026-05-15T15:09:19Z</dc:date>
  <entry>
    <title>sub-grid scale horizontal eddy viscosity</title>
    <link rel="alternate" href="https://dlt-acc.firelay.cloud/c/message_boards/find_message?p_l_id=3231581&amp;messageId=5470790" />
    <author>
      <name>Sebastian Schwindt</name>
    </author>
    <id>https://dlt-acc.firelay.cloud/c/message_boards/find_message?p_l_id=3231581&amp;messageId=5470790</id>
    <updated>2022-11-22T12:41:44Z</updated>
    <published>2022-11-22T12:41:44Z</published>
    <summary type="html">Hi,&lt;br /&gt;&lt;br /&gt;The User Manual states in Table 9.2, that the sub-grid scale (SGS) horizontal eddy viscosity \nu_SGS is &amp;#34;-&amp;#34; if HLES is not used. Regarding the sub-grid scale horizontal eddy diffusivity, Table 9.3 says that D_SGS is 0 when HLES is not used. My confusion is: what happens with \nu_SGS when I do not use HLES? Does &amp;#34;-&amp;#34; in Table 9.2 mean that it is just 0?&lt;br /&gt;&lt;br /&gt;The question might sound trivial, but it would be great to get feedback.&lt;br /&gt;&lt;br /&gt;Best,&lt;br /&gt;Sebastian</summary>
    <dc:creator>Sebastian Schwindt</dc:creator>
    <dc:date>2022-11-22T12:41:44Z</dc:date>
  </entry>
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