var topic = "<!DOCTYPE html>\r\n\n<!-- saved from url=(0024)http://docs.autodesk.com -->\r\n<html>\n   <head>\n      <meta http-equiv=\"Content-Type\" content=\"text/html; charset=UTF-8\">\n      <meta name=\"product\" content=\"MAYAUL\">\n      <meta name=\"release\" content=\"2016\">\n      <meta name=\"book\" content=\"Tutorial\">\n      <meta name=\"created\" content=\"2015-10-30\">\n      <meta name=\"topicid\" content=\"GUID-2E4A1DE7-0441-4C79-BEDF-EC3A93722AA7\">\n      <meta name=\"topic-type\" content=\"concept\">\n      <title>Adjust the Nucleus solver settings</title><script language=\"javascript\">var index = \'index.html\';</script></head>\n   <body height=\"100%\">\n      <div class=\"body_content\" id=\"body-content\" dir=\"ltr\"><a name=\"GUID-2E4A1DE7-0441-4C79-BEDF-EC3A93722AA7\"></a><div class=\"head\">\n            <h1>Adjust the Nucleus solver settings</h1>\n         </div>\n         <p><a name=\"WS1A9193826455F5FF45564F421269B08A8E91327\"></a>In the next steps, you will improve the mesh behavior by increasing the Nucleus solver\n            <span class=\"MenuCascade\" id=\"GUID-DC0CF9B8-F2AF-468D-8110-D1697B8DA62B\">Substeps</span>. You also increase the Nucleus <span class=\"MenuCascade\" id=\"GUID-AC874205-D994-4CC8-82C4-CF9C962EF23B\">Gravity</span> so that the slag slides down the chute faster. \n         </p><a name=\"WS1A9193826455F5FF45564F421269B08A8E91328\"></a><p class=\"list-intro\"><a name=\"WS1A9193826455F5FF45564F421269B08A8E91329\"></a>To set nucleus node attributes\n         </p>\n         <ol type=\"1\" start=\"1\">\n            <li>In the <span class=\"MenuCascade\" id=\"GUID-38930CF0-2912-4493-8113-D1B88E2A1B20\">Outliner</span>, select the <em class=\"mild\">nParticle_slag</em> object, then click the <span class=\"MenuCascade\" id=\"GUID-57997190-AB27-4711-AED4-4D5A1826B75A\">nucleus</span> tab in the <span class=\"MenuCascade\" id=\"GUID-17967156-3BDA-43EE-BF8E-82FC96CA5E15\">Attribute Editor</span>. \n            </li>\n            <li>In the <span class=\"MenuCascade\" id=\"GUID-BE8DB07E-9138-46CF-9FE6-8D06C0B40364\">Gravity and Wind</span> section, set <span class=\"MenuCascade\" id=\"GUID-8D3A51AA-84E3-4028-A4F0-633787F272A2\">Gravity</span> to 13.8. <a name=\"WS73099CC142F48755-5DCDA9B6127315F9A85-76BE\"></a><div class=\"figure-anchor\"><img src=\"../images/GUID-EDBE7883-D069-4883-94C9-2D0848BD52B3-low.png\"></div> \n               <p><a name=\"WS1A9193826455F5FF45564F421269B08A8E9132C\"></a>For the other nParticle objects created in this simulation, <span class=\"MenuCascade\" id=\"GUID-9D48F99E-669F-4A6C-A551-3E91CDC5E9D0\">Ignore Solver Gravity</span> will be turned on, meaning that the <span class=\"MenuCascade\" id=\"GUID-E155B703-19BA-46F7-BDBA-743A880B0D5D\">Gravity</span> will not affect them. \n               </p> \n            </li>\n            <li>In the <span class=\"MenuCascade\" id=\"GUID-5541D004-0536-4BB8-A3B1-B8DABEC74001\">Solver Attributes</span> section, set <span class=\"MenuCascade\" id=\"GUID-666DB0F4-488B-46AD-96B2-303A9C74AE0B\">Substeps</span> to 6. <a name=\"WS73099CC142F48755-5DCDA9B6127315F9A85-76BD\"></a><div class=\"figure-anchor\"><img src=\"../images/GUID-52A828EF-E3F5-49FC-AD50-9E14B8A2511D-low.png\"></div> \n               <p><a name=\"WS1A9193826455F5FF45564F421269B08A8E9132E\"></a>This controls how the simulation time is broken up into calculation segments. Simulation\n                  quality and collision accuracy generally improve with increasing <span class=\"MenuCascade\" id=\"GUID-AE0513DA-296A-49BA-96FB-C9CD1EE0B7D8\">Substeps</span> values. A high number of <span class=\"MenuCascade\" id=\"GUID-A4A4BC0E-6EB3-4055-8A91-7C5EBC17F82F\">Substeps</span> may result in slower solving. \n               </p> \n            </li>\n            <li>Rewind and play the simulation. </li>\n         </ol>\n         <div class=\"footer-block\"><a href=\"..\" class=\"comments-anchor\" target=\"_blank\"><span class=\"comments-link\">Please send us your comment about this page</span></a></div><br><p class=\"footer-license-block\"><a rel=\"license\" href=\"http://creativecommons.org/licenses/by-nc-sa/3.0/\" target=\"_blank\"><img alt=\"Creative Commons License\" style=\"border-width: 0;\" src=\"../images/ccLink.png\"></a>&nbsp;<em>Except where otherwise noted, this work is licensed under a <a rel=\"license\" href=\"http://creativecommons.org/licenses/by-nc-sa/3.0/\" target=\"_blank\">Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License</a>. Please see the <a href=\"http://autodesk.com/creativecommons\" target=\"_blank\">Autodesk Creative Commons FAQ</a> for more information.</em></p><br></div>\n   </body>\n</html>";