Hi all,

I'm testing out the Robin type BCs for the outflow as given in the user guide.

Which takes the form of the following

 <R VAR="u" USERDEFINEDTYPE="HOutflow" VALUE="0" PRIMCOEFF="D0/TimeStep"/>
 <R VAR="v" USERDEFINEDTYPE="HOutflow" VALUE="0" PRIMCOEFF="D0/TimeStep"/>
 <R VAR="p" USERDEFINEDTYPE="HOutflow" VALUE="0" PRIMCOEFF="1.0/(D0*Kinvis)"/>

Upon startup, this gives the error

Fatal   : Level 0 assertion violation
Could not identify matrix type from dimension

I havent come across this error before. Could someone point out what the error is?

SIncerely,