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The d-operator is not well defined in the current context, use dtang or mean and d operators instead.
Posted 16.02.2025, 11:25 MEZ Electrochemistry, Studies & Solvers, Equation-Based Modeling 0 Replies
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I am working on COMSOL using the Mathematics module for a non-generic 2D problem. My setup involves three different physical phenomena, each implemented using separate mathematics modules with their respective governing equations.
I am facing an issue with defining flux boundary conditions (Neuman) that are functions of dependent variables of all the modules. When I incorporate such boundary conditions, I encounter the following error:
“The d-operator is not well defined in the current context. Use dtang or mean and operators instead.”
However, when I assign a constant value as the boundary condition, the simulation runs successfully, and I obtain results. Unfortunately, my actual problem requires boundary conditions that are functions of the dependent variables.
Could anyone kindly help me resolve this issue?
Hello Sthithapragna Gudimalla
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