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Constraining the results between 0 and pi
Posted Jun 9, 2020, 11:08 p.m. EDT General, Parameters, Variables, & Functions, Equation-Based Modeling Version 5.2a 0 Replies
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Hi I am trying to model nematic liquid crystal behaviour under an electric field.
To do this I solve the following PDE.
Where 
is the angle of the liquid crystals with respect to the x axis. The direction of the liquid crystal is represented by the vector 
. The main problem that I have is that for nematic liquid crystals n and -n are the same thing as such is periodic and only values between 0 and pi should be allowed. Is there a way to constrain the results to only be within this range.
Hello Fernando J. Pena Cantu
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