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--></style></head><body lang=EN-US link="#0563C1" vlink="#954F72"><div class=WordSection1><p class=MsoNormal>I just checked sideDragFactor setup in mom_v_sidedrag.F, scenario 2 is solved for no slip side. <o:p></o:p></p><p class=MsoNormal>Now I mostly wonder the logic behind scenario 1, for the case with free-slip bottom and a specified bottom drag. <o:p></o:p></p><p class=MsoNormal>Any clarification is appreciated. <o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Best,<o:p></o:p></p><p class=MsoNormal>Yilang<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in'><p class=MsoNormal><b><span style='font-size:12.0pt;color:black'>From: </span></b><span style='font-size:12.0pt;color:black'>MITgcm-support <mitgcm-support-bounces@mitgcm.org> on behalf of Yilang Xu <yxu@whoi.edu><br><b>Reply-To: </b><mitgcm-support@mitgcm.org><br><b>Date: </b>Tuesday, June 4, 2019 at 22:12<br><b>To: </b>"mitgcm-support@mitgcm.org" <mitgcm-support@mitgcm.org><br><b>Subject: </b>[MITgcm-support] Bottom drag setup question<o:p></o:p></span></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><p class=MsoNormal>Hi, <o:p></o:p></p><p class=MsoNormal> <o:p></o:p></p><p class=MsoNormal>I am checking the behavior of the bottom drag, following the old post <a href="http://mailman.mitgcm.org/pipermail/mitgcm-support/2011-June/007258.html">http://mailman.mitgcm.org/pipermail/mitgcm-support/2011-June/007258.html</a> . <o:p></o:p></p><p class=MsoNormal>My question involves 2 scenarios, and I am wondering if my interpretation is right. <o:p></o:p></p><p class=MsoNormal> <o:p></o:p></p><p class=MsoNormal>1. Scenario 1 setup: <o:p></o:p></p><p class=MsoNormal>no_slip_sides=.FALSE.,<o:p></o:p></p><p class=MsoNormal>no_slip_bottom=.FALSE.,<o:p></o:p></p><p class=MsoNormal>bottomDragQuadratic=2.5E-3,<o:p></o:p></p><p class=MsoNormal>Although both the bottom and the side are free slip, there are still bottom friction and energy dissipation at the bottom. I saw some papers do this using MITgcm, but it is not very intuitive to me. <o:p></o:p></p><p class=MsoNormal> <o:p></o:p></p><p class=MsoNormal>2. Scenarios 2 setup: <o:p></o:p></p><p class=MsoNormal>no_slip_sides=.TRUE.,<o:p></o:p></p><p class=MsoNormal>no_slip_bottom=.TRUE.,<o:p></o:p></p><p class=MsoNormal>bottomDragQuadratic=2.5E-3,<o:p></o:p></p><p class=MsoNormal>Now the bottom is no slip with a bottom drag coefficient specified. However, since the side is no slip as well, is there also a drag coefficient that can be specified for the sides? <o:p></o:p></p><p class=MsoNormal> <o:p></o:p></p><p class=MsoNormal>There are some explanations in the documentation <a href="http://mitgcm.org/public/r2_manual/latest/online_documents/node58.html"><span style='color:blue'>http://mitgcm.org/public/r2_manual/latest/online_documents/node58.html</span></a> , but I am hoping further clarifications about this. <o:p></o:p></p><p class=MsoNormal> <o:p></o:p></p><p class=MsoNormal>Thanks,<o:p></o:p></p><p class=MsoNormal>Yilang<o:p></o:p></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Times New Roman",serif;color:black'> </span><o:p></o:p></p><p class=MsoNormal>_______________________________________________ MITgcm-support mailing list MITgcm-support@mitgcm.org http://mailman.mitgcm.org/mailman/listinfo/mitgcm-support <o:p></o:p></p></div></body></html>