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[FAQ]

Using the TUI command /solve/set/expert answer ‘yes’ to the question “Keep temporary solver memory from being freed?” We want to save the VOF gradient values for post-processing. These values were usually accessed for creating a Contour in the ‘Derivatives’ section In previous versions (up to 17.x), both ‘Derivatives’ and ‘Reconstruction’ sections in Contours display were returning reconstruction gradient filled in SV_VOF_RG. That has been modified in R18 : ‘Reconstruction’ would return SV_VOF_RG if allocated, and ‘Derivatives’ would return SV_VOF_G if allocated. So the proper derivative values for VOF gradients are now available in ‘Reconstruction’ section, then selection for instance ‘Reconstruction dvof/dX’ Corresponding value can be accessed in the TUI (for example) in display / contour / mixture by ‘recon-dvof-dx’