Thanks Ankang for looking into the issue, I have removed the variable epsilon in line 56. The results still have a probelm. changed to 55 <FUNCTION NAME="ExactSolution"> 56 <E VAR="u" VALUE="exp(-2.0*FinTime)*sin(x)*sin(y)" /> 57 </FUNCTION>" The error result are same for epsilon values 1.0, 0.5 and 0.01. I have also attached result for .vtu file of the result (which is same for all the three values of epsilon). The highest value = 0.019 /approx e^(-2.0*2*1.0). Results Writing: "P4_codesquare11_2.chk" (0s, XML) Time-integration : 145.194s Writing: "P4_codesquare11.fld" (0s, XML) ------------------------------------------- Total Computation Time = 149s ------------------------------------------- L 2 error (variable u) : 0.148193 L inf error (variable u) : 0.018095 Cheers, Ashok. On Sat, Sep 2, 2017 at 10:48 PM, Ankang Gao <gaoak@pku.edu.cn> wrote:
Hi, Ashok
There is a typing error in your file Conditions_unsteadyConvectionDom.xml in line 56, you type "epsion" there instead of "epsilon", this may be the reason.
Ankang
-----原始邮件----- *发件人:*"ashok jallepalli" <ash.nani@gmail.com> *发送时间:*2017-09-03 12:05:25 (星期日) *收件人:* nektar-users <nektar-users@imperial.ac.uk>, "< nektar-developers@sci.utah.edu>" <nektar-developers@sci.utah.edu> *抄送:* *主题:* [Nektar-users] ADRSolver epsilon value defaults to 1.0
Hi All, I am trying to use ADR solver to run unsteady-advection diffusion reaction with epsilon value set to 0.01. But the simulation always defaults to 1.0.
I changed epsilon value to 1.0,0.5 0.01. The end result is always the same (as if epsilon=1.0). Please let me know if anyone has encountered this issue or knows how to fix this bug.
I have added the script files to reproduce this issue.
Cheers, Ashok.