Robin boundary condition containing two dependent variables -- CFD Online Discussion Forums

February 25, 2017, 19:04	Robin boundary condition containing two dependent variables	#1
babakflame Senior Member Bobby Join Date: Oct 2012 Location: Michigan Posts: 454 Rep Power: 15	Dear Fellows I know how to implement Robin boundary condition for a dependent variable in OpenFoam using swak4Foam. For instance, the boundary condition: $k \frac{\partial T}{\partial n} + \alpha T = \alpha T_\infty$ can be written using swak4Foam library as described in the following link: http://www.modlab.lv/docs/2011/OpenF...Vilums_pdf.pdf However, my question is if my boundary was in the following form: $\frac{\partial T}{\partial n} + \frac{\partial \varphi}{\partial n} T = 1$ in which both and $\varphi$ are dependent variables. How can I implement it in OpenFoam? I am thinking of using codedFixedValue option for this boundary condition. Any hint is appreciated.

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