Ansys CFX 14.5 + trasnient "initialize profile data"
Hello,
one quastion about "initialize profile data" in combination with Ansys CFX 14.5. Is it possible to use/change the rotational speed of a domain from "outside" by a set of profile data??Or is there another possibility to change the rotational speed automatically during a transient calculation? I also want to change the massflow rate too but this should be quite easy by a profile data. Example of my planned transient calculation: t = 0  5s: n = 2rpm, massFlow rate= 1kg/s t = 5  10s: n = 1rpm, massFlow rate = 0.5kg/s t = 10 15s: n = 1.5rpm, massFlow rate = 0.7kg/s Maybe someone can help me with my problem! Thank you in advance!! //Markus 
Use CEL. Look into either step function or if function.

Thank you very much for your support, but unforunately I cannot find the step function for rotational speed and massFlow (correlation between those two parameters) depending on a number of time steps . Therefore, it would be very nice, iy you can give me more explicit information (description, manual, tutorial, ...) or an short example of changing the rotational speed and massFlow depending on a number of time steps??
Example of my planned transient calculation: time steps = 0  500: n = 2rpm, massFlow rate= 1kg/s timesteps = 501  1000: n = 1rpm, massFlow rate = 0.5kg/s timesteps = 1001 1500: n = 1.5rpm, massFlow rate = 0.7kg/s So the rotational speed and massFlow rate should be constant for a specific time steps period. Therefore, I want to load a list of values into CFXPre. But if this is also possible with using the stepfunction, it would be more elegant. Thank you in advance. //Markus 
The syntax of "if" statements is quite simple. It is simple to implement your function this way. Have a look at the tutorials which come with CFX form examples of if and step functions.
Alternately you could use a 1D interpolation file. Again, they are demonstrated in the tutorials. 
I got it!
Thank you. This thread can be closed. //Markus 
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