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.