cross-shaped mixer
hello everyone,
I am doing simulations on a 3D cross-shaped micromixers. In order to study the mixing quality of the cross-shaped micormixer, I have to use 2 liquids. Both with same properties of water at 20°C. One introduced in inlet1, the other in inlet 2. So in inlet 1 I can put liquid water. In inlet 2, how should I proceed? all I have read on internet is confusing me. Should I create a second fluid called "dye", for example: I take liquid water in the database, change the name and cancel the chemical formula. Then? Thank you for any help. It is really urgent ! Last question: I must use pressure outlet with atmsopheric pression. As in Fluent, the operating pressure is set to 101325 Pa, do I have to write it again in the oulet for the Gauge pressure? I don't really understand that. thanks for any help !!! |
injections, particle tracking, DPM
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I am trying to do as this: Define/Injection/create/ - injection type : surface - from inlet 2 - inert - material : anthracite (the default one) : how should I choose something that would have same properties as water? - diameter distribution : uniform - point properties : x,y and z-vel are set by default to 0, should I put the velocity I put for the water to enter? diameter : 0.001 temp : 300K Then I go to Discrete Phase Model, max number of steps to 500 and that's all? Then I launch calculations? I really need your help !!!!! |
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I have modified a little what I have done before. Using particle tracking I have createt a particle named "dye" with same properties of water. But when I run calculations I have : DPM Iteration .... number tracked = 361, escaped = 0, aborted = 0, trapped = 0, evaporated = 0, incomplete = 361, incomplete_parallel = 0 Parallel particle tracking concurrency: 50% Is it normal? How can I have the concentration of the dye after calculations? nothing in the menu for that, just things as "residence time etc..." ... please !!!! any help would be ok, I don't even know if what I'm doing has any sense and it's impossible to find anything clear on the net !!!! I just need to find the way to determine the concentration of a "dye" that would be injected from one of the 2 inlets ...... |
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