A converged simulation is raw data until you extract numbers from it. Fluent produces those numbers through reports, and choosing the right report is what separates a defensible result from a coloured picture.

The distinction that matters most is between an area weighted average and a mass weighted one. For a temperature at an outlet where the velocity profile is not uniform, the mass weighted average is the physically meaningful value, because it weights each cell by the flow actually passing through it.

Beyond averages, surface integrals give the total heat flux or the force on a wall, and volume integrals give quantities over a region. The flux report is also the quickest sanity check available: if mass in and mass out do not balance, nothing else in the report is worth reading.

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Written by cfd.ninja

June 4, 2020

In this tutorial you will learn toobtain values from results of a simulation usinf Ansys Fluent. You can see the previous tutorial to see full simulation.

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We share the same tutorial using ANSYS CFX.

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