Crystal dissolution in solvent

najib · June 26, 2018, 07:03

Hiya, I am new to CFD and Fluent. I want to simulate dissolution of a single hexagonal crystal in a solvent under Laminar and Turbulent flow conditions. I am interested in predicting the concentration field around the crystal during dissolution. I also want to track the crystal shape, as it evolves over time during dissolution.
Is it possible to do it in Fluent? If yes, please suggest a way to approach this problem. Your help will be highly appreciated.

LuckyTran · June 26, 2018, 08:34

I would word it differently (i.e. a single crystal sounds like you want to do a molecular dynamics simulation which is not in the realm of fluid dynamics) but it sounds like you want to do a species transport problem (a fluid dynamics problem!) which Fluent can do.

najib · June 26, 2018, 08:53

yes. I want to model species transport. A static crystal with fluid flowing over it. I would like to have a very low Reynolds number in case 1 and would like to see concentration field created due to diffusion and convection. In second case a high Reynolds number, so that diffusion is negligible. The purpose is to find concentration field and shape changes over time under different hydrodynamic conditions. What kind of model I shall need to use? Do I need an adaptive mesh to track the interface to find shape at every step. I assume, I shall have to provide experimental mass transfer coefficient as a boundary condition.

June 26, 2018, 07:03	Crystal dissolution in solvent	#1
najib New Member Najib Join Date: Jun 2018 Posts: 2 Rep Power: 0	Hiya, I am new to CFD and Fluent. I want to simulate dissolution of a single hexagonal crystal in a solvent under Laminar and Turbulent flow conditions. I am interested in predicting the concentration field around the crystal during dissolution. I also want to track the crystal shape, as it evolves over time during dissolution. Is it possible to do it in Fluent? If yes, please suggest a way to approach this problem. Your help will be highly appreciated.

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June 26, 2018, 08:34		#2
LuckyTran Senior Member Lucky Join Date: Apr 2011 Location: Orlando, FL USA Posts: 5,673 Rep Power: 65	I would word it differently (i.e. a single crystal sounds like you want to do a molecular dynamics simulation which is not in the realm of fluid dynamics) but it sounds like you want to do a species transport problem (a fluid dynamics problem!) which Fluent can do.

June 26, 2018, 08:53		#3
najib New Member Najib Join Date: Jun 2018 Posts: 2 Rep Power: 0	yes. I want to model species transport. A static crystal with fluid flowing over it. I would like to have a very low Reynolds number in case 1 and would like to see concentration field created due to diffusion and convection. In second case a high Reynolds number, so that diffusion is negligible. The purpose is to find concentration field and shape changes over time under different hydrodynamic conditions. What kind of model I shall need to use? Do I need an adaptive mesh to track the interface to find shape at every step. I assume, I shall have to provide experimental mass transfer coefficient as a boundary condition.