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June 26, 2008, 21:42 |
compressor simulation question
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#1 |
Guest
Posts: n/a
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Hi everybody,
i want to know how i can simulate a compressor in ANSYS-CFX 11 by using the general simulation type (i mean not the turbomachinery one)..... what about the radial equilibruim at exit? thanks, Noureddine |
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June 27, 2008, 07:42 |
Re: compressor simulation question
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#2 |
Guest
Posts: n/a
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Hi Noureddine!
See you want a general mode simulation then,import mesh for compressor,its casing and in/out domains,apply boundary conditions and this will do. Means u have to hndle a 360 deg case with Volute mesh(separate one). there is nothing extra special . Pankaj. |
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June 27, 2008, 10:12 |
Re: compressor simulation question
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#3 |
Guest
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Hi Pankaj,
first, thank you for your quick answer. in my case i want to simulate one blade passage of an axial compressor. I want to know if there is an exit boundary condition suitable for rotating machines like in conventional turbomachinery codes where we specify a static pressure in one radial position (hub or casing) and extrapolate it using a radial equilibrium condition. Regards, Noureddine |
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July 2, 2008, 06:50 |
Re: compressor simulation question
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#4 |
Guest
Posts: n/a
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Hi!
What is the reason u want to specify pressure in radial condition? Actually i dont know abt other codes but in CFX it will be better if u prepare a model with In,out,periodic for one passage,use mfr approach to solve axial flow impeller. Still if u know better ways,then dont divert your own path. Regards, Pankaj. |
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July 2, 2008, 10:31 |
Re: compressor simulation question
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#5 |
Guest
Posts: n/a
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Thanks again Pankaj,
for Ansys-CFX, it is not my choice to work with it, they imposed it to me for my PhD research. In my master, i developped my own code for transonic compressors using a Time Marching Method (without turbulence... i failed to converge with the Baldwin-Lomax model...i did not have enough time), and in all documentations about the numerical simulation in turbomachinery, u can see that they all use the radial equilibrium for exit condition. Best Regards, Noureddine |
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