<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body style="overflow-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;"><div style="overflow-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;">Hi Chris,<div><br></div><div>BDRY information is only available to the hydrodynamics solvers in FLASH. Any non-ideal physics, such as resistivity, aren’t aware of BDRY cells. If you don’t want magnetic field to diffuse into your BDRY cells you can try setting the resistivity in those cells to be much lower compared to the surrounding plasma.<br><div>
<div style="caret-color: rgb(0, 0, 0); color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;">*********************************************<br>Adam Reyes</div><br class="Apple-interchange-newline"><meta charset="UTF-8"><br style="caret-color: rgb(0, 0, 0); color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;"><span style="caret-color: rgb(0, 0, 0); color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; 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<div><br><blockquote type="cite"><div>On Sep 12, 2023, at 1:32 PM, ddk172@edu.hmu.gr wrote:</div><br class="Apple-interchange-newline"><div><div>Hello Flash users,<br><br>I used the variable BDRY in Flash4.7 version in order to have a rigid body in some specific regions of my computational domain, and it was working as intended. During the tests I used the unsplit staggered mesh MHD solver + magnetic resistivity. Now, I am trying to replicate the results in Flash4.7.1 version and the magnetic field appears to be advected and/or diffused at the same regions. Do you know how can I solve this problem? I attach a figure that you see the problem. In the left one you can see 4.7.1 version and in the right the 4.7 version.<br><br>Thanks in advance<br><br>Chris Karvounis<span id="cid:4D5A6CCB-9742-4EBB-A60E-23826A0DF4CE"><flash4.7.1.png></span>_______________________________________________<br>flash-users mailing list<br>flash-users@flash.rochester.edu<br><br>For list info, including unsubscribe:<br>https://flash.rochester.edu/mailman/listinfo/flash-users<br></div></div></blockquote></div><br></div></div></body></html>