STAR-CCM+ 6.04 : 02.08.2011

: (Multi-Component Flow Tutorials)

, :

, . ( ) . , . :

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(1 , 293 ) . ( 16 /) 323 . , ( ) . . : - , - .

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: ( ) (Dilution Pipe (Steady Flow) Tutorial)

. 5 / 10 / .

(Importing the Mesh and Naming the Simulation).

STAR-CCM+ , , (New Simulation). . . .ccm.

> > (File > Import > Import Volume Mesh). (Open) //multiphase (doc/tutorials/multiphase), , STAR-CCM+, dilPipe.ccm.

(Open), .

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STAR-CCM+ , (Output window). (Graphics) , .

dilPipeSteady.sim.

(Visualizing the Geometry) , , . , :

> 1 > > 1 > (Scenes > Geometry Scene 1 > Displayers > Geometry 1 > Parts).

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(Properties) (Parts). (List View), Default_Fluid: symmetry plane.

(Apply) (Close).

1 (Geometry Scene 1) 180 , , .

, . , , (baffles), , .

(Renaming Regions and Boundaries)

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. .

> Default_Fluid (Regoins > Default_Fluid) Fluid.

. , , Default_Boundary_Region.

> > Fluid >

Default_Boundary_Region (Regions > Boundaries > Fluid > Default_Boundary_Region) (Wall).

(Scaling the Mesh)

, .ccm . > (Mesh > Diagnostics...), (Output), .

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, 0 5.0 -, 0 5.5 Y-, 0 1.5 Z-. , STAR-CCM+ . 0.0254, .

> (Mesh > Scale Mesh).

(Scale Mesh) ,

Fluid 0.0254 .

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(Apply), , (Close).

(Apply) .

_ (Reset_View) , .

, , (Output).

(Setting up the Models) , , , , , . . (Segregated Flow) K-Epsilon. , , 1 (Physics 1). :

> 1 (Continua > Physics 1) Dilution Pipe.

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:

Dilution Pipe (Select models).

(Physics Model Selection) , , .

, (Three Dimensional) ( (Space)).

(Multi-Component) (Material).

(Non-Reacting) (Reaction Regime).

(Segregated Flow) (Flow)

(Ideal Gas) (Equation of State) (Segregated Fluid Temperature) ( , (Auto-select recommended Physics models) ).

(Steady) (Time). (Turbulent)

(Viscous Regime) K-Epsilon (K-Epsilon Turbulence)

, (Reynolds-Averaged Turbulence).

(Physics Model Selection) :

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(Close). , Dilution Pipe dilPipeSteady , , .

Dilution Pipe > (Dilution Pipe > Models). .

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, (Save).

(Setting Material Properties) . , STAR-CCM+ . : 16 /, 2230 /(*), 0.038 W/m-K 1.175E-5 Pas. , (Setting up the Models).

> > (Models > Multi-Component Gas > Gas Mixture).

(Gas Components) .

(Gas Components) (Select Mixture Components).

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(Select Mixture Components) (Material Databases), (Standard) (Gases), .

(Air) CH4 (),

. ( ).

(Apply), (Close). (Gas Components) , .

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CH4 (Methane). , :

(Gas Components) (Reorder Mixture Components). (Reorder Mixture Components) (Methane) .

(Component

Properties). (Constant)

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:

(Dynamic Viscosity) = 1.175E-5 Pa-s (Molecular Weight) = 16 kg/kg.mol (Specific Heat) = 2230 J/kg-K (Thermal Conductivity) = 0.038 W/m-K

.

(Setting Initial Conditions)

293 .

> > > (Dilution Pipe > Initial Conditions > Species Mass Fraction > Constant)

(Properties) (Value).

(Constant Value)

1.0 (Air).

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.

> (Static Temperature > Constant).

(Properties) 293 .

.

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(Setting Boundary Conditions and Values)

, . , .

> Fluid > > _ > > > (Regions > Fluid > Boundaries > Inner_inlet > Physics Values > Mass Fraction > Constant).

(Value) 0.0, 1.0

> (Static Temperature > Constant).

(Value) 323 .

>

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(Turbulence Intensity > Constant).

(Properties) (Value) 0.1.

(Turbulent Viscosity Ratio) 100 (Velocity Magnitude) 10 /.

.

_ (Outer_inlet) (Physics Values) :

(Species Mass Fraction) = [1.0, 0.0] (Static Temperature) = 293 K (Turbulence Intensity) = 0.1 (Turbulent Viscosity Ratio) =

40 .

pressure Physics Values. :

Mass Fraction = [1.0, 0.0] Static Temperature = 308 K Turbulence Intensity = 0.1 Turbulent Viscosity Ratio = 40

, , . , .

.

(Setting Solver Parameters and Stopping Criteria)

, (under-relaxation factors)

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. (under-relaxation factors) . , . 300 , .

, . (Stopping Criteria) (Maximum Steps).

(Properties) (Maximum Steps), 300.

300 , .

.

(Visualizing the Solution)

. .

(Scenes) > (New Scene > Scalar).

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1 (Scalar Scene 1)

> -Z > +Y (Look Down > -Z > Up +Y).

> 1 > > 1 (Scenes > Scalar Scene 1 > Displayers > Scalar 1).

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(Properties), (Contour Style) (Smooth Filled).

1 (Scalar 1) (Parts).

(Properties) (Parts). (Select All), (Regions) Fluid , Fluid , .

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.

(Scalar Field).

(Function)

(Temperature).

.

(Running the Simulation)

(Run) .

, > (Solution > Run). (Solution), > > (Tools > Toolbars > Solution), . (Residuals), . , (Residuals), . . , . (Graphics) .

1 (Scalar Scene 1) .

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,

(Stop) . , (Run). , , 300 .

, .

(Visualizing the Results)

1 (Scalar Scene 1), .

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, .

> (Mass Fraction > Methane).

()

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.

(Pressure). , , . .

1 (Scalar 1). (Properties)

(Transform) 1 (symmetry plane 1).

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.

(Properties) , (Smooth Shade) .

, , , . , (Transform) (Outline).

Fluid: wall Fluid: symmetry plane (Outline), , .

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.

(Adding Streamlines)

.

1 (Geometry Scene 1) ,

.

dilutionPipeSteady (Derived Parts) > (New Part > Streamline...).

, .

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, (Input Parts) Fluid.

, (Vector Field) (Velocity) .

, (Part Seed)

(Seed Mode).

Fluid: Inner_inlet Fluid: Outer_inlet (Seed Parts).

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. , (Display)

(New Streamline Displayer). :

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(Create), (Close). , , .

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.

: (Velocity: Magnitude).

:

, , , .

, ,

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, (Derived Parts) streamline, (Source Seed).

(Properties) (Randomize). :

.

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(Summary) STAR-CCM+:

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, .

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: ( )

(Dilution Pipe (Unsteady Flow) Tutorial)

, ( ) (Dilution Pipe (Steady Flow) Tutorial). , , . - (velocity-time profiles) :

(Loading an Existing Simulation)

STAR-CCM+ , .

> (File > Load Simulation...). (Load Simulation).

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(Browse...) dilPipeSteady.sim, ( ) (Dilution Pipe (Steady Flow) Tutorial).

dilPipeSteady.sim (Open)

.

(Load Simulation).

STAR-CCM+ (Explorer) , ( ) (Dilution Pipe (Steady Flow) Tutorial), dilPipeSteady.

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(Renaming the Simulation)

.

> (File > Save As...), . (Save) , .

dilPipeUnsteady (File Name).

(Save).

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(Explorer), (Properties) (Output) .

(Setting up the Unsteady Flow Model)

( ) (Dilution Pipe (Steady Flow) Tutorial), . , .

(Continua), (Dilution Pipe) (Select models...).

(Phusics Model Selection) :

(Steady) (Enabled Physics models) .

(Time).

( ) (Implicit Unsteady). :

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(Close).

, (Save).

(Creating Field Functions)

. STAR-CCM+ . :

v=10-4t

v=5+2t :

(Tools), (Field Functions) (New).

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1 (User Field Function 1).

(Rename...).

(Inner Inlet Velocity).

(Properties)

(Definition) 1 (User Field Function 1 Definition) ,

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(Outer Inlet Velocity) 5 + 2 * $Time

.

(Setting Boundary Conditions and Values)

, , (Creating Field Functions). :

> Fluid > > _ > > (Regions > Fluid > Boundaries > Inner_inlet > Physics Values > Velocity Magnitude).

(Properties) (Method) (Field Function).

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> (Velocity Magnitude > Field Function).

(Properties)

(Inner Inlet Velocity) (Scalar Function).

> _ (Boundaries > Outer_inlet) , , , . (Outer Inlet Velocity).

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.

(Setting Solver Parameters)

, ( ) (Dilution Pipe (Steady Flow)) 2 . 0.025, , 80 . :

> ( ) (Solvers > Implicit Unsteady).

(Properties) (Time-Step)

0.025.

:

> (Stopping Criteria > Maximum Physical Time).

(Properties)

(Max Physical Time) 2.0

.

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(Autosaving the Simulation)

0.5 . , . :

> (File > Auto Save...).

(Auto Save) , :

(Close).

(Running the Simulation)

, , . 1 (Scalar Scene 1):

(Scenes), 1 (Scalar Scene 1) (Open).

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(Graphics) .

(Mass Fraction of Methane), (Graphics).

, 1 (Scalar

1) (Transform) (Identity).

1 (Outline 1) (Transform) (Identity).

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, > -Z > +Y (Look Down > -Z > Up +Y).

(Run) . , > (Solution > Run). (Solution), > > (Tools > Toolbars > Solution), . (Residuals), . , (Residuals), . (Graphics) .

,

(Stop) . , (Run). , , 2 .

1 (Scalar Scene 1), .

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(Visualizing the Results)

:

2- :

(Scenes) > (New Scene > Vector).

, > -Z > +Y

(Look Down > -Z > Up +Y).

> 1 > (Displayers > Vector 1 > Parts).

(Properties)

(Parts). (Regions), Fluid .

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, :

0.5 :

(File) (Load Simulation...) dilPipeUnsteady@5.00e-01.sim.

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:

(Scenes) 1 (Scalar Scene 1), (Graphics) .

0.5 , . , :

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dilPipeUnsteady@2.00e+00

1 (Vector Scene 1).

(opy).

dilPipeUnsteady@5.00e-01 (Scenes).

(Paste).

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1 (Vector Scene 1). , (Graphics).

0.5 2 .

.

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(Summary)

STAR-CCM+:

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