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Old   July 21, 2011, 16:51
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  #21
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vyc
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hello,

I made two domain interface analysis one of them is moving other static.

but then I check results I found that fluid do not flow from one interface side to other...

Interface model: General

Interface connection: GGI

Additional Interface model: Side Dependent

best regards Vytautas
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Old   July 21, 2011, 19:29
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I have done this type of interface many times, it should work fine. There is something specific to your setup which is not working. Need more details to be of further assistance.
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Old   July 22, 2011, 11:28
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hello

some info:

FLOW: Flow Analysis 1
&replace DOMAIN INTERFACE: Domain Interface 1
Boundary List1 = Domain Interface 1 Side 1
Boundary List2 = Domain Interface 1 Side 2
Filter Domain List1 = Default Domain
Filter Domain List2 = cilindrine dalis
Interface Region List1 = static side
Interface Region List2 = moving side
Interface Type = Fluid Fluid
INTERFACE MODELS:
Option = General Connection
FRAME CHANGE:
Option = None
END
MASS AND MOMENTUM:
Option = Free Slip Wall
END
PITCH CHANGE:
Option = None
END
END
MESH CONNECTION:
Option = GGI
INTERSECTION CONTROL:
Face Intersection Depth Factor = 1
Face Search Tolerance Factor = 0.1
Option = Bitmap
Permit No Intersection = On
END
END
END

First side:

FLOW: Flow Analysis 1
DOMAIN: Default Domain
&replace BOUNDARY: Domain Interface 1 Side 1
Boundary Type = INTERFACE
Interface Boundary = On
Location = static side
BOUNDARY CONDITIONS:
HEAT TRANSFER:
Option = Conservative Interface Flux
END
MESH MOTION:
Option = Specified Displacement
DISPLACEMENT:
Displacement X Component = 0 [m]
Displacement Y Component = su funcijos duomenimis
Displacement Z Component = 0 [m]
Option = Cartesian Components
END
END
THERMAL RADIATION:
Option = Conservative Interface Flux
END
END
NONOVERLAP CONDITIONS:
Boundary Type = WALL
BOUNDARY CONDITIONS:
HEAT TRANSFER:
Heat Transfer Coefficient = 20 [W m^-2 K^-1]
Option = Heat Transfer Coefficient
Outside Temperature = 100 [C]
END
MASS AND MOMENTUM:
Option = No Slip Wall
Wall Velocity Relative To = Mesh Motion
END
MESH MOTION:
Option = Specified Displacement
DISPLACEMENT:
Displacement X Component = 0 [m]
Displacement Y Component = su funcijos duomenimis
Displacement Z Component = 0 [m]
Option = Cartesian Components
END
END
THERMAL RADIATION:
Diffuse Fraction = 1.
Emissivity = 1.
Option = Opaque
END
WALL ROUGHNESS:
Option = Smooth Wall
END
END
END
END

Second side:


FLOW: Flow Analysis 1
DOMAIN: cilindrine dalis
&replace BOUNDARY: Domain Interface 1 Side 2
Boundary Type = INTERFACE
Interface Boundary = On
Location = kur juda
BOUNDARY CONDITIONS:
HEAT TRANSFER:
Option = Conservative Interface Flux
END
MESH MOTION:
Option = Specified Displacement
DISPLACEMENT:
Displacement X Component = 0 [m]
Displacement Y Component = su funcijos duomenimis
Displacement Z Component = 0 [m]
Option = Cartesian Components
END
END
THERMAL RADIATION:
Option = Conservative Interface Flux
END
END
NONOVERLAP CONDITIONS:
Boundary Type = WALL
BOUNDARY CONDITIONS:
HEAT TRANSFER:
Heat Transfer Coefficient = 10 [W m^-2 K^-1]
Option = Heat Transfer Coefficient
Outside Temperature = 100 [C]
END
MASS AND MOMENTUM:
Option = No Slip Wall
END
MESH MOTION:
Option = Specified Displacement
DISPLACEMENT:
Displacement X Component = 0 [m]
Displacement Y Component = su funcijos duomenimis
Displacement Z Component = 0 [m]
Option = Cartesian Components
END
END
THERMAL RADIATION:
Diffuse Fraction = 1.
Emissivity = 1.
Option = Opaque
END
WALL ROUGHNESS:
Option = Smooth Wall
END
END
END
END
END
END


I have tried different set ups but all time the same


thanks For help

Vytautas
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Old   July 22, 2011, 14:47
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Check the solver output. The domain interface intersection should be re-calculated each timestep and you should see the non-overlap fraction calculated and shown as non-zero.
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Old   July 23, 2011, 05:32
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hello,

I check solution out put options but I have not see options :inersection recalculate each time step

I use 13 version...

In solver control tab
there are some options Intersection control - but intersection recalculate each time step no...

please hellp

best regards Vytautas
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Old   July 23, 2011, 06:27
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The interface model needs to be transient rotor stator to get it to recalculate the GGI each time step. You have selected general interface which is for a fixed interface.
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Old   July 23, 2011, 15:21
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hello,

rotor and stator in straight line movement analysis ?

I have read Ansys 12 training manual there are 3 tape of interface models:

Translation periodicity- in my case NO

Rotation periodicity -in my case NO

General connection this is all what remand... frame changes -YES, Pitch change -YES

or I under stud some thing wrong?

waiting for replay

Vytautas
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Old   July 23, 2011, 15:31
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hello

Can some body send require set ups for strait line transient moving...

or any tutorial...

please...

I stuck in on it for too long...

Vytautas
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Old   July 24, 2011, 06:47
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Glenn Horrocks
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I told you what you need. There should be options like frozen rotor and other rotationing domain types and transient rotor stator.

I seem to vaguely remember you need to set one domain to be rotating to access these options - in this case set the stationary domain to be rotating at 1e-10 rad/s or something like that.
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