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U&g expression in Energy Equation in OF3.0.0

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Old   November 30, 2015, 04:18
Default U&g expression in Energy Equation in OF3.0.0
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the energy equation in reactingTwoPhaseEulerFoam and other solvers in OpenFOAM 3.0.0 looks a litte bit different from the other versions.
Here the code for the EEqn in the reactingTwoPhaseEulerFoam:

if (E1Eqn.valid())
E1Eqn =
+ alpha1*rho1*(U1&g)
+ fvOptions(alpha1, rho1, phase1.thermo().he())


The most is clear to me but what is the meaning of: U1&g

Do anybody know what the meaning of this expression is and where it is calculated?
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Old   November 30, 2015, 06:00
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