I want to degrade one component in a 3D geometry along with diluted species transport and laminar flow in it. My simulation runs okay in stationary study (i used step function here). But when i want to use time dependent study on 3D it shows many errors and failure to find initial values or failure to evaluate variables.
I was wondering that, may be i have used a wrong solver. The concentrations of the species in reaction engineering works easily with time dependent study but i am unable to converge when i synchronize with mass and momentum.
So this time i thought of using time dependent,fixed geometry as my solver. and it is taking infinite time to solve. Am i following the currect way? Is it possible to solve with time dependent fixed geometry? as i used 3d geometry for my laminar flow and tranport diluted species.
FYI: I am using 4.2v of COMSOL.
Please contribute your comsol knowledge. I will be grateful.
I was wondering that, may be i have used a wrong solver. The concentrations of the species in reaction engineering works easily with time dependent study but i am unable to converge when i synchronize with mass and momentum.
So this time i thought of using time dependent,fixed geometry as my solver. and it is taking infinite time to solve. Am i following the currect way? Is it possible to solve with time dependent fixed geometry? as i used 3d geometry for my laminar flow and tranport diluted species.
FYI: I am using 4.2v of COMSOL.
Please contribute your comsol knowledge. I will be grateful.