Jeff Hiller
                                                                                                                                                    COMSOL Employee
                                                         
                            
                                                                                                                                                
                         
                                                
    
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                                                Posted:
                            
                                3 years ago                            
                            
                                2022/06/22 16:05 GMT-4                            
                        
                        Updated:
                            
                                3 years ago                            
                            
                                2022/06/22 16:22 GMT-4                            
                        
                        
                                                    Hello Kiryu,
This may not be the only factor to consider, but do you expect the flow to be turbulent? It seems plausible from your sketch. If so, you will need either the CFD Module or the Heat Transfer Module. Turbulence is not something you can realistically hope to implement on your own. The CFD Module includes more turbulence models than the Heat Transfer Module, and of course they also each have their own unique features, see the Specification Chart for a list of capabilities in each of those modules and read this blog post for a discussion of when each turbulence model applies.
Best,
Jeff
    -------------------
    Jeff Hiller                                                
 
                                                
                            Hello Kiryu,
This may not be the only factor to consider, but do you expect the flow to be turbulent? It seems plausible from your sketch. If so, you will need either the CFD Module or the Heat Transfer Module. Turbulence is not something you can realistically hope to implement on your own. The CFD Module includes more turbulence models than the Heat Transfer Module, and of course they also each have their own unique features, see [the Specification Chart](https://www.comsol.com/products/specifications/) for a list of capabilities in each of those modules and read [this blog post](https://www.comsol.com/blogs/which-turbulence-model-should-choose-cfd-application/) for a discussion of when each turbulence model applies. 
Best,
Jeff                        
                                                
                                                                                                            
                                             
                        
                        
                                                
    
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                                                Posted:
                            
                                3 years ago                            
                            
                                2022/06/22 16:49 GMT-4                            
                        
                        
                                                    Hello Jeff,
Thank you for your replying. I expect the flow to be laminar since velocity would be very small. Even in that case, my guess is that I have to purchase Porous Media Module to simulate multiple chemical substances and find each concentration. Do you think there is any way that I can do those procedures without buying new modules?
Thank you,
Kiryu Sakamoto
                                                 
                                                
                            Hello Jeff,
Thank you for your replying. I expect the flow to be laminar since velocity would be very small. Even in that case, my guess is that I have to purchase Porous Media Module to simulate multiple chemical substances and find each concentration. Do you think there is any way that I can do those procedures without buying new modules?
Thank you,
Kiryu Sakamoto