storeOldTime() and groovyBC oldTime()
 

Hey all,

for a more complex boundary I need to know the previous mag of a vector field, to be able to compute the gradient (sign is important). For that I checked goovyBC and want to use oldTime(field). This is only working if the old field exist. In my case I get the same values for the old and actual value:

They are identical for each time steps which can not be possible (source of heat is powered off for example).

Therefore I implemented the following line in my code:
Compiled successfully but I still do not get different values!
Can somebody suggest something?

Thanks for any help.

It would be also possible if we can define a boolean in groovy that is not changing till some criterion is reached again.

Hence I am not getting a result with groovyBC, I will code this into my solver and create a variable that can be called by groovyBC.

Hi Tobi;

To have the previous time step variable value i guess the oldTime() function could be used.

Saideep

Hi,

thanks for the replay.
As I showed in the first post, the values were the same:

With the debug flag on, it gave me identical values.
Anyway. I solved this problem now using C++ in the solver. Here I generated a new register field on which groovy has access. Its like a switch and in groovy I have no access like:

Where Ton is set in the *.C file of my solver.
Unfortunatelly Ton is a volScalarField at the moment that stores 0 or 1 (for all cells). Its working fine but the better way would be to generate a registry object as bool or scalar and use that to access in groovy. But at the moment I have no time to figure out how to create a registry booleans / scalar.

Hi,

Just wanted to know why you are using max function for all the variables?

Saideep