This routine computes Q-criterion from velocity in auxField. , where and S are asymmetric (vorticity tensor) and symmetric (rate of strain) part of velocity gradient. i.e and .
Ref: http://www.ctr.maths.lu.se/media/thesis/2013/FMA820.pdf The interface has to comply to the abstract interface tem_varSys_proc_element.
| Type | Intent | Optional | Attributes | Name | ||
|---|---|---|---|---|---|---|
| class(tem_varSys_op_type), | intent(in) | :: | fun |
Description of the method to obtain the variables, here some preset values might be stored, like the space time function to use or the required variables. |
||
| type(tem_varSys_type), | intent(in) | :: | varSys |
The variable system to obtain the variable from. |
||
| integer, | intent(in) | :: | elempos(:) |
Position of the TreeID of the element to get the variable for in the global treeID list. |
||
| type(tem_time_type), | intent(in) | :: | time |
Point in time at which to evaluate the variable. |
||
| type(treelmesh_type), | intent(in) | :: | tree |
global treelm mesh info |
||
| integer, | intent(in) | :: | nElems |
Number of values to obtain for this variable (vectorized access). |
||
| integer, | intent(in) | :: | nDofs |
Number of degrees of freedom within an element. |
||
| real(kind=rk), | intent(out) | :: | res(:) |
Resulting values for the requested variable. Linearized array dimension: (n requested entries) x (nComponents of this variable) x (nDegrees of freedom) Access: (iElem-1)fun%nComponentsnDofs + (iDof-1)*fun%nComponents + iComp |