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Using Expression for Adaptive Mesh Refining

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Old   August 6, 2019, 07:43
Default Using Expression for Adaptive Mesh Refining
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Rajeev Kumar Singh
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Hi everyone,

Reference Ansys 2019 R2.

Ansys 2019 has a new feature where we can use expressions directly. I am simulating movement of a droplet through air using VOF model. In order to capture the interface nicely I want to create finer mesh near the interface. In the Adapt/Create Register Fluent has a new feature where we can use expressions as Refinement or Coarsening criteria.

I want to refine all the cells which are having volume fraction be secondary phase between 0.9 and 1 and coarsen all the phases that are lying outside this region. I have written the commands as shown in attachment. However Fluent doesn't not evaluate. Can anyone help what is wrong in my expression.

Figure attached
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ansys 2019 r2, expression, vof, volume fraction

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