<?xml version="1.0" encoding="UTF-8" ?>
<?xml-stylesheet type="text/xsl" href="https://communities.bentley.com/cfs-file/__key/system/syndication/rss.xsl" media="screen"?><rss version="2.0" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:slash="http://purl.org/rss/1.0/modules/slash/" xmlns:wfw="http://wellformedweb.org/CommentAPI/"><channel><title>Selecting the best numerical solver</title><link>https://communities.bentley.com/products/hydraulics___hydrology/f/haestad-hydraulics-and-hydrology-forum/238267/selecting-the-best-numerical-solver</link><description>Hello, 
 I&amp;#39;m simulating a storm water network in Sewergems plat form. 
 My network contains open channels, pipes, ponds, pond outlet structures and pumping option. 
 The network was design for 5 yr - 1 hr duration event. and I can simulate the model in</description><dc:language>en-US</dc:language><generator>Telligent Community 12</generator><item><title>RE: Selecting the best numerical solver</title><link>https://communities.bentley.com/thread/743382?ContentTypeID=1</link><pubDate>Mon, 28 Nov 2022 05:19:13 GMT</pubDate><guid isPermaLink="false">6dad98f5-dbc9-4c4d-a9ba-e9da8dc6aa8e:b9093869-0464-4c79-95b8-4759f6911194</guid><dc:creator>Nishadi</dc:creator><description>&lt;p&gt;Thanks Jesse&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>RE: Selecting the best numerical solver</title><link>https://communities.bentley.com/thread/741623?ContentTypeID=1</link><pubDate>Sun, 13 Nov 2022 22:04:26 GMT</pubDate><guid isPermaLink="false">6dad98f5-dbc9-4c4d-a9ba-e9da8dc6aa8e:51516e05-763a-40ad-ab4d-12f044f8bdca</guid><dc:creator>Jesse Dringoli</dc:creator><description>[quote userid="423864" url="~/products/hydraulics___hydrology/f/haestad-hydraulics-and-hydrology-forum/238267/selecting-the-best-numerical-solver"]1. Which solver&amp;nbsp;would be the best suit with this nature of network?[/quote]
&lt;p&gt;For a model with ponds and outlet structure, I recommend using the Explicit (SWMM) solver with the Routing Step between 1 and 5 seconds. This tends to work best in this type of model and there is mention of this here: &lt;a href="/products/hydraulics___hydrology/w/hydraulics_and_hydrology__wiki/11852/differences-between-solvers-gvf-convex-vs-gvf-rational-vs-implicit-vs-explicit-swmm"&gt;Differences between solvers: GVF-Convex vs. GVF-Rational vs. Implicit vs. Explicit (SWMM)&lt;/a&gt;&lt;/p&gt;
[quote userid="423864" url="~/products/hydraulics___hydrology/f/haestad-hydraulics-and-hydrology-forum/238267/selecting-the-best-numerical-solver"]2. In Explicit model, the drainage path considered as prismatic section. In my network I&amp;#39;m having channels (95% of network are open channels.).&amp;nbsp;Do I need to convert my whole model in to conduits or does the software converts what ever the open channels in to Prismatic sections with in the software?[/quote]
&lt;p&gt;The Explicit solver automatically assumes prismatic cross sectional areas when using channels and cross sections; there is no need to convert to conduits. If you have adequately spaced cross sections and relatively small changes, there should not be any notable impact of the prismatic assumption. See more here: &lt;a href="/products/hydraulics___hydrology/w/hydraulics_and_hydrology__wiki/11041/are-channels-prismatic-or-non-prismatic"&gt;Are Channels prismatic or non-prismatic?&lt;/a&gt;&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item></channel></rss>