Significance of Alpha and Solvers Application

jolync · January 30, 2011, 04:12

May I know what is the significance of alpha in the solver twoPhaseEulerFoam? Is air phase is defined when alpha is 0 whereas water phase is defined when alpha is 1 or vice versa? Is it the same as that defined in one of the tutorials, damBreak case from the interFoam solver, as featured in the user guide?

How does the case bubbleColumn in the solver bubbleFoam differ from the same case in twoPhaseEulerFoam solver?

Kind assistance is greatly appreciated. Thank you!

cheng1988sjtu · January 30, 2011, 15:53

you can see the definition of alpha in the transportProperties.

It's not constrained to air and water, you can define them to any other fluids.

soccol · January 31, 2011, 14:40

standart solver- air and wather system

alpha = 1 is air, or dispersed fase

but it's your choice the fluids.

January 30, 2011, 04:12	Significance of Alpha and Solvers Application	#1
jolync New Member Jolyn Chuah Join Date: Nov 2010 Posts: 5 Rep Power: 15	May I know what is the significance of alpha in the solver twoPhaseEulerFoam? Is air phase is defined when alpha is 0 whereas water phase is defined when alpha is 1 or vice versa? Is it the same as that defined in one of the tutorials, damBreak case from the interFoam solver, as featured in the user guide? How does the case bubbleColumn in the solver bubbleFoam differ from the same case in twoPhaseEulerFoam solver? Kind assistance is greatly appreciated. Thank you!

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January 30, 2011, 15:53		#2
cheng1988sjtu Member Charlie Join Date: Dec 2010 Location: USA Posts: 85 Rep Power: 15	you can see the definition of alpha in the transportProperties. It's not constrained to air and water, you can define them to any other fluids.

January 31, 2011, 14:40		#3
soccol New Member Renato Soccol Join Date: Aug 2010 Location: Blumenau, Brazil Posts: 6 Rep Power: 15	standart solver- air and wather system alpha = 1 is air, or dispersed fase but it's your choice the fluids.