Converting Variables Between Cell Centered and Nodal

Question: How do I convert a cell centered variable to be nodal, or vice versa? Solution: This can be done by creating a new variable in the Specify Equations dialog (Data>Alter>Specify Equations). By using the new var location field, a new variable equal to an existing variable can be created with values stored in either location. For example, say a dataset has a cell centered variable named Velocity: To convert […]

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Calculating Grid K Normal Nodal Values

Question: The symmetry of nodal Grid K Unit Normal values differ from the comparable cell-centered values (see Figure 1). How are nodal Grid K Unit Normal values calculated?1 Explaining the Question: In Figure 1, at nodes 1, 6, 11, 16, and 21 the X Grid K Unit Normal vectors are equal. However, on the data row below it (nodes 2, 7, 12, 17, and 22), the components of the X […]

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