Cylindrical Components Boundary Conditions
Do somebody can give clear instruction how understand cylindrical components from ANSYS point of view? Are they unit vectors or what?
I want to mimic swirling flow in injector of combustion chamber. |
I do not understand what you are asking. Cylindrical coords for what? A local coord system? Or a 2D axisymmetric simulation? And what are you modelling in your injector - the flow inside the injector, the spray it creates or a combustion model?
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Cylindrical comp. of flow direction as a result I want to have fuel well mixed with oxygen.
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I still do not understand what you are asking. Have you completed a simulation and you want to extract the velocity of something in cylindrical corrds? If so what is something?
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Please have a look:
http://postimg.org/image/4rqo0p3dt/ injector is modeled in this case as a point source... |
I assume you are asking what form the cylindrical coords are. Yes, they are unit vectors. But I think you can enter any vector and CFX will take them as unit vectors anyway.
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You are right, I was asking about it thx.
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But how check influence of these components on swirling properties in the simplest way?
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Very difficult to predict :(.
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Your image was not attached and your question is still not clear.
But if you are asking how can you assess the importance of the direction vector on your simulation - you can do this with a simple sensitivity analysis. Just run a series of simulations with different direction vectors and compare the results. If there is no significant change in the result then the direction vector makes little difference. |
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swirl modeling
Hello
I am facing the same issue. I want to generate a certain swirl in an axisymmetric slice section of a burner chamber. The question is then here, how is the flow direction related to the swirl strength and to the flow pattern? Therefore, I need first of all to know the exact definition of theta component? |
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