What software is used to simulate the reactions in a fluidized bed?
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I would like to ask everyone: What software is available for simulating reactions in the gas phase and in the condensed phase? Is there anything that can incorporate flow coupling? How can the chemical reaction mechanism between gas and solid be determined?
Using CFD software like Fluent is possible; strictly speaking, this isn’t considered chemical process simulation – it falls under CFD. Your problem can be addressed using Fluent; I have done this before
Could you explain it in detail? I am mainly interested in chemical reaction processes, and I consider that flow inevitably leads to a huge increase in computational complexity. Can chemical reactions be simulated simply? Thank you
Fluent has a help example that explains fluidized beds; if you need it, I can send you that document along with the results of running it. However, due to the upload format on the forum, I’m unable to provide it there. Please leave your email address if you’d like it
It’s better to use Fluent to simulate the flow field; it works well for simulating combustion as well. But if reactions are taken into account, it becomes more complex, and it’s likely necessary to write code by oneself
Agree with the second floor! The original poster can give it a try! :lol :) :victory:
The research conducted by the original poster can probably be classified as part of reaction engineering. It is necessary to take into account mass and energy transfer, as well as momentum transfer; at the same time, the intrinsic kinetics of the reaction must also be considered. Generally, it is required to solve a system of equations to address these issues. There are inevitably changes in mass and energy during a reaction, and once the data related to the intrinsic kinetics of the reaction are available, they can be incorporated into the equations governing mass and energy transfer. In engineering research, it is usually necessary to find such intrinsic kinetic data on one’s own. I’m not sure at what scale the original poster is studying the fluidized bed – could it be multiple scales involved?
Use COMSOL; it is good at handling couplings.
Thank you, qwert110. My research focuses on chemical reactions within circulating fluidized beds; it is a metallurgical process that involves chemical reactions between gas and solids. What you mentioned is exactly what I am looking for. At the moment, I haven’t been able to find any data on the kinetics of these reactions, so I’m trying to find out if there are any software tools that can help. As for the issue of scale, I’m not very clear about this concept. I want to know the macroscopic reaction outcomes, such as the impact of changes in temperature, pressure, components, etc., on the final product.
To calculate the effects of pressure, temperature, and compositional changes on it, it must be quite complicated. I think it’s necessary to solve the flow-heat transfer-reaction equations; fortunately, no phase change has occurred yet. For flow and heat transfer, there are existing model examples that can be used as references. As for the reaction, it’s necessary to find the reaction rate constants and activation energy for the relevant reactions, and then add source terms to the compositional equations in order to account for those reactions. . If there is some error in the kinetic data, it might not have a very large impact on the calculation results. I’m not sure whether the original poster is aiming for a qualitative analysis rather than a highly precise one. .
Reply to 4# semeng: I need it urgently too. Could you send it to my email? 385425538@qq.com