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October 27, 2014, 09:19 |
Setting rotating frame of referece.
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#1 |
Member
Rolando Figueiredo
Join Date: Mar 2013
Posts: 41
Rep Power: 13 |
Hello!
I'd like to ask a few insights on my setup for a rotating impeller,as seen on the image: http://s13.postimg.org/hzakt4dmf/image.jpg Let's go over each domain and boundaries/interfaces: DOMAIN ANEL Continuous fluid, 1MPa reference pressure, Stationary, Shear Stress Transport DOMAIN DUTO Continuous fluid, 1MPa reference pressure, Stationary, Shear Stress Transport Duto_walls: non slip smooth wallDOMAIN IMPELIDOR Continuous fluid, Reference 1MPa, Rotating -24000rpm about global Y Domain interface 1 side 2: conservative interface fluxINTERFACES Domain interface 1: General connection, Frozen rotor, Pitch ratio 1About solver control, timestep is set to physical, 4.167e-6s. So, is there something too wrong? bacause the solver refuses to run over iteration 1! Any input would be appreciated. Thank you in advance! |
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October 27, 2014, 16:25 |
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#2 |
Super Moderator
Glenn Horrocks
Join Date: Mar 2009
Location: Sydney, Australia
Posts: 17,828
Rep Power: 144 |
Please post your output file.
Also note that it appears you could model this with a single rotating domain, and no stationary domains. Then there is no need for interfaces. |
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October 28, 2014, 04:58 |
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#3 |
Member
Rolando Figueiredo
Join Date: Mar 2013
Posts: 41
Rep Power: 13 |
I realize I could avoid the interfaces. I tried it with the single RFR, but it wouldn't work, so I added the stationary as I will eventually have to model the volute (once I figure out the issue).
Here's the out file: This run of the CFX-14.0 Solver started at 07:56:04 on 28 Oct 2014 by user Rolando on ROLANDO-PC (intel_xeon64.sse2_winnt) using the command: "C:\Program Files\ANSYS Inc\v140\CFX\bin\perllib\cfx5solve.pl" -stdout-comms -batch -ccl - Setting up CFX Solver run ... +--------------------------------------------------------------------+ | | | CFX Command Language for Run | | | +--------------------------------------------------------------------+ LIBRARY: MATERIAL: Water Material Description = Water (liquid) Material Group = Water Data, Constant Property Liquids Option = Pure Substance Thermodynamic State = Liquid PROPERTIES: Option = General Material EQUATION OF STATE: Density = 997.0 [kg m^-3] Molar Mass = 18.02 [kg kmol^-1] Option = Value END SPECIFIC HEAT CAPACITY: Option = Value Specific Heat Capacity = 4181.7 [J kg^-1 K^-1] Specific Heat Type = Constant Pressure END REFERENCE STATE: Option = Specified Point Reference Pressure = 1 [atm] Reference Specific Enthalpy = 0.0 [J/kg] Reference Specific Entropy = 0.0 [J/kg/K] Reference Temperature = 25 [C] END DYNAMIC VISCOSITY: Dynamic Viscosity = 8.899E-4 [kg m^-1 s^-1] Option = Value END THERMAL CONDUCTIVITY: Option = Value Thermal Conductivity = 0.6069 [W m^-1 K^-1] END ABSORPTION COEFFICIENT: Absorption Coefficient = 1.0 [m^-1] Option = Value END SCATTERING COEFFICIENT: Option = Value Scattering Coefficient = 0.0 [m^-1] END REFRACTIVE INDEX: Option = Value Refractive Index = 1.0 [m m^-1] END THERMAL EXPANSIVITY: Option = Value Thermal Expansivity = 2.57E-04 [K^-1] END END END END FLOW: Flow Analysis 1 SOLUTION UNITS: Angle Units = [rad] Length Units = [m] Mass Units = [kg] Solid Angle Units = [sr] Temperature Units = [K] Time Units = [s] END ANALYSIS TYPE: Option = Steady State EXTERNAL SOLVER COUPLING: Option = None END END DOMAIN: Anel Coord Frame = Coord 0 Domain Type = Fluid Location = LIVE BOUNDARY: Anel_walls Boundary Type = WALL Location = WALLS 2 BOUNDARY CONDITIONS: MASS AND MOMENTUM: Option = No Slip Wall END WALL ROUGHNESS: Option = Smooth Wall END END END BOUNDARY: Domain Interface 2 Side 2 Boundary Type = INTERFACE Location = INLET 2 BOUNDARY CONDITIONS: MASS AND MOMENTUM: Option = Conservative Interface Flux END TURBULENCE: Option = Conservative Interface Flux END END END BOUNDARY: Outlet Boundary Type = OUTLET Location = OUTLET 2 BOUNDARY CONDITIONS: FLOW REGIME: Option = Subsonic END MASS AND MOMENTUM: Option = Average Static Pressure Pressure Profile Blend = 0.05 Relative Pressure = 7.6 [MPa] END PRESSURE AVERAGING: Option = Average Over Whole Outlet END END END DOMAIN MODELS: BUOYANCY MODEL: Option = Non Buoyant END DOMAIN MOTION: Option = Stationary END MESH DEFORMATION: Option = None END REFERENCE PRESSURE: Reference Pressure = 1 [MPa] END END FLUID DEFINITION: Fluid 1 Material = Water Option = Material Library MORPHOLOGY: Option = Continuous Fluid END END FLUID MODELS: COMBUSTION MODEL: Option = None END HEAT TRANSFER MODEL: Fluid Temperature = 25 [C] Option = Isothermal END THERMAL RADIATION MODEL: Option = None END TURBULENCE MODEL: Option = k epsilon END TURBULENT WALL FUNCTIONS: Option = Scalable END END END DOMAIN: Duto Coord Frame = Coord 0 Domain Type = Fluid Location = SOLID BOUNDARY: Domain Interface 1 Side 1 Boundary Type = INTERFACE Location = OUTLET BOUNDARY CONDITIONS: MASS AND MOMENTUM: Option = Conservative Interface Flux END TURBULENCE: Option = Conservative Interface Flux END END END BOUNDARY: Duto_walls Boundary Type = WALL Location = WALLS BOUNDARY CONDITIONS: MASS AND MOMENTUM: Option = No Slip Wall END WALL ROUGHNESS: Option = Smooth Wall END END END BOUNDARY: Inlet Boundary Type = INLET Location = INLET BOUNDARY CONDITIONS: FLOW DIRECTION: Option = Normal to Boundary Condition END FLOW REGIME: Option = Subsonic END MASS AND MOMENTUM: Mass Flow Rate = 14.027 [kg s^-1] Option = Mass Flow Rate END TURBULENCE: Option = Zero Gradient END END END DOMAIN MODELS: BUOYANCY MODEL: Option = Non Buoyant END DOMAIN MOTION: Option = Stationary END MESH DEFORMATION: Option = None END REFERENCE PRESSURE: Reference Pressure = 1 [MPa] END END FLUID DEFINITION: Fluid 1 Material = Water Option = Material Library MORPHOLOGY: Option = Continuous Fluid END END FLUID MODELS: COMBUSTION MODEL: Option = None END HEAT TRANSFER MODEL: Fluid Temperature = 25 [C] Option = Isothermal END THERMAL RADIATION MODEL: Option = None END TURBULENCE MODEL: Option = k epsilon END TURBULENT WALL FUNCTIONS: Option = Scalable END END END DOMAIN: Impelidor Coord Frame = Coord 0 Domain Type = Fluid Location = CREATED_MATERIAL_10 BOUNDARY: Domain Interface 1 Side 2 Boundary Type = INTERFACE Location = INLET 3 BOUNDARY CONDITIONS: MASS AND MOMENTUM: Option = Conservative Interface Flux END TURBULENCE: Option = Conservative Interface Flux END END END BOUNDARY: Domain Interface 2 Side 1 Boundary Type = INTERFACE Location = OUTLET 3 BOUNDARY CONDITIONS: MASS AND MOMENTUM: Option = Conservative Interface Flux END TURBULENCE: Option = Conservative Interface Flux END END END BOUNDARY: Imp_walls Boundary Type = WALL Frame Type = Rotating Location = WALLS 3 BOUNDARY CONDITIONS: MASS AND MOMENTUM: Option = No Slip Wall END WALL ROUGHNESS: Option = Smooth Wall END END END DOMAIN MODELS: BUOYANCY MODEL: Option = Non Buoyant END DOMAIN MOTION: Angular Velocity = -24000 [rev min^-1] Option = Rotating AXIS DEFINITION: Option = Coordinate Axis Rotation Axis = Coord 0.2 END END MESH DEFORMATION: Option = None END REFERENCE PRESSURE: Reference Pressure = 1 [MPa] END END FLUID DEFINITION: Fluid 1 Material = Water Option = Material Library MORPHOLOGY: Option = Continuous Fluid END END FLUID MODELS: COMBUSTION MODEL: Option = None END HEAT TRANSFER MODEL: Fluid Temperature = 25 [C] Option = Isothermal END THERMAL RADIATION MODEL: Option = None END TURBULENCE MODEL: Option = k epsilon END TURBULENT WALL FUNCTIONS: Option = Scalable END END END DOMAIN INTERFACE: Domain Interface 1 Boundary List1 = Domain Interface 1 Side 1 Boundary List2 = Domain Interface 1 Side 2 Interface Type = Fluid Fluid INTERFACE MODELS: Option = General Connection FRAME CHANGE: Option = Frozen Rotor END MASS AND MOMENTUM: Option = Conservative Interface Flux MOMENTUM INTERFACE MODEL: Option = None END END PITCH CHANGE: Option = Value Pitch Ratio = 1 END END MESH CONNECTION: Option = GGI END END DOMAIN INTERFACE: Domain Interface 2 Boundary List1 = Domain Interface 2 Side 1 Boundary List2 = Domain Interface 2 Side 2 Interface Type = Fluid Fluid INTERFACE MODELS: Option = General Connection FRAME CHANGE: Option = Frozen Rotor END MASS AND MOMENTUM: Option = Conservative Interface Flux MOMENTUM INTERFACE MODEL: Option = None END END PITCH CHANGE: Option = Value Pitch Ratio = 1 END END MESH CONNECTION: Option = GGI END END OUTPUT CONTROL: RESULTS: File Compression Level = Default Option = Standard END END SOLVER CONTROL: Turbulence Numerics = First Order ADVECTION SCHEME: Option = High Resolution END CONVERGENCE CONTROL: Maximum Number of Iterations = 1000 Minimum Number of Iterations = 1 Physical Timescale = 4.16667e-006 [s] Timescale Control = Physical Timescale END CONVERGENCE CRITERIA: Residual Target = 1.E-4 Residual Type = RMS END DYNAMIC MODEL CONTROL: Global Dynamic Model Control = On END END END COMMAND FILE: Version = 14.0 Results Version = 14.0 END SIMULATION CONTROL: EXECUTION CONTROL: EXECUTABLE SELECTION: Double Precision = Off END INTERPOLATOR STEP CONTROL: Runtime Priority = Standard MEMORY CONTROL: Memory Allocation Factor = 1.0 END END PARALLEL HOST LIBRARY: HOST DEFINITION: rolandopc Remote Host Name = ROLANDO-PC Host Architecture String = winnt-amd64 Installation Root = C:\Program Files\ANSYS Inc\v%v\CFX END END PARTITIONER STEP CONTROL: Multidomain Option = Independent Partitioning Runtime Priority = Standard EXECUTABLE SELECTION: Use Large Problem Partitioner = Off END MEMORY CONTROL: Memory Allocation Factor = 1.0 END PARTITIONING TYPE: MeTiS Type = k-way Option = MeTiS Partition Size Rule = Automatic END END RUN DEFINITION: Run Mode = Full Solver Input File = C:\Users\Rolando\Desktop\Ansys\Teste\TesteGeral.de f END SOLVER STEP CONTROL: Runtime Priority = Standard MEMORY CONTROL: Memory Allocation Factor = 1.0 END PARALLEL ENVIRONMENT: Number of Processes = 1 Start Method = Serial END END END END |
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October 28, 2014, 04:59 |
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#4 |
Member
Rolando Figueiredo
Join Date: Mar 2013
Posts: 41
Rep Power: 13 |
+--------------------------------------------------------------------+
| | | Solver | | | +--------------------------------------------------------------------+ +--------------------------------------------------------------------+ | | | ANSYS(R) CFX(R) Solver 14.0 | | | | Version 2011.10.10-23.01 Tue Oct 11 00:28:38 GMTDT 2011 | | | | Executable Attributes | | | | single-int32-64bit-novc8-noifort-novc6-optimised-supfort-noprof-nos| | | | (C) 2011 ANSYS, Inc. | | | | All rights reserved. Unauthorized use, distribution or duplication | | is prohibited. This product is subject to U.S. laws governing | | export and re-export. For full Legal Notice, see documentation. | +--------------------------------------------------------------------+ +--------------------------------------------------------------------+ | Job Information | +--------------------------------------------------------------------+ Run mode: serial run Host computer: ROLANDO-PC (PID:2392) Job started: Tue Oct 28 07:56:08 2014 License Cap: ANSYS CFX Solver (Max 512K Nodes) License Cap: Multiple Reference Frames License ID: ROLANDO-PC-SISTEMA-2200-006901 +--------------------------------------------------------------------+ | Memory Allocated for Run (Actual usage may be less) | +--------------------------------------------------------------------+ Data Type Kwords Words/Node Words/Elem Kbytes Bytes/Node Real 123622.1 369.02 94.51 482899.0 1476.09 Integer 42063.1 125.56 32.16 164308.8 502.25 Character 3695.0 11.03 2.82 3608.4 11.03 Logical 80.0 0.24 0.06 312.5 0.96 Double 1208.1 3.61 0.92 9438.1 28.85 +--------------------------------------------------------------------+ | Mesh Statistics | +--------------------------------------------------------------------+ | Domain Name | Orthog. Angle | Exp. Factor | Aspect Ratio | +----------------------+---------------+--------------+--------------+ | | Minimum [deg] | Maximum | Maximum | +----------------------+---------------+--------------+--------------+ | Anel | 78.8 OK | 5 OK | 3 OK | | Duto | 85.1 OK | 1 OK | 4 OK | | Impelidor | 30.5 ok | 59 ! | 5 OK | | Global | 30.5 ok | 59 ! | 5 OK | +----------------------+---------------+--------------+--------------+ | | %! %ok %OK | %! %ok %OK | %! %ok %OK | +----------------------+---------------+--------------+--------------+ | Anel | 0 0 100 | 0 0 100 | 0 0 100 | | Duto | 0 0 100 | 0 0 100 | 0 0 100 | | Impelidor | 0 <1 100 | <1 3 97 | 0 0 100 | | Global | 0 <1 100 | <1 2 98 | 0 0 100 | +----------------------+---------------+--------------+--------------+ Domain Name : Anel Total Number of Nodes = 27616 Total Number of Elements = 22162 Total Number of Prisms = 434 Total Number of Hexahedrons = 21728 Total Number of Faces = 10770 Domain Name : Duto Total Number of Nodes = 87360 Total Number of Elements = 79560 Total Number of Hexahedrons = 79560 Total Number of Faces = 15360 Domain Name : Impelidor Total Number of Nodes = 220022 Total Number of Elements = 1206269 Total Number of Tetrahedrons = 1206269 Total Number of Faces = 73106 Global Statistics : Global Number of Nodes = 334998 Global Number of Elements = 1307991 Total Number of Tetrahedrons = 1206269 Total Number of Prisms = 434 Total Number of Hexahedrons = 101288 Global Number of Faces = 99236 Domain Interface Name : Domain Interface 1 Discretization type = GGI Intersection type = Direct Non-overlap area fraction on side 1 = 3.65E-05 Non-overlap area fraction on side 2 = 1.16E-01 Pitch ratio ( user specified ) = 1.000 Pitch angle for side 1 [degrees] = 360.000 Pitch angle for side 2 [degrees] = 360.000 Domain Interface Name : Domain Interface 2 Discretization type = GGI Intersection type = Direct Non-overlap area fraction on side 1 = 7.04E-05 Non-overlap area fraction on side 2 = 1.47E-01 Pitch ratio ( user specified ) = 1.000 Pitch angle for side 1 [degrees] = 296.760 Pitch angle for side 2 [degrees] = 360.000 +--------------------------------------------------------------------+ | ERROR #001100279 has occurred in subroutine ErrAction. | | Message: | | Floating point exception: Overflow | | | | | | | | | | | +--------------------------------------------------------------------+ +--------------------------------------------------------------------+ | ERROR #001100279 has occurred in subroutine ErrAction. | | Message: | | Stopped in routine FPX: C_FPX_HANDLER | | | | | | | | | | | +--------------------------------------------------------------------+ +--------------------------------------------------------------------+ | An error has occurred in cfx5solve: | | | | The ANSYS CFX solver exited with return code 1. No results file | | has been created. | +--------------------------------------------------------------------+ End of solution stage. +--------------------------------------------------------------------+ | The following user files have been saved in the directory | | C:\Users\Rolando\Desktop\Ansys\Teste\TesteGeral_00 1: | | | | mon | +--------------------------------------------------------------------+ This run of the ANSYS CFX Solver has finished. |
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