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Access and compare volume Scalar Field value of a cell with neighbouring cell

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Old   November 5, 2018, 00:05
Default Access and compare volume Scalar Field value of a cell with neighbouring cell
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Upuli
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Dear friends
Thank you in advance.

I have a volume scalar field which represents mass,(m). I want identify the cells in which the m is reduced than the previous time step and apply a velocity (U), calculate based on the mass reduction in cell(i), to the neighbouring cells of cell(i) . Can you please help me , If anyone knows how to do this in openfoam,
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