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Home / Examples / Fluid Analysis [Bernoulli] / Example 6: Flow Path with Multiple Inlets and Outlets
Example 6: Flow Path with Multiple Inlets and Outlets
General
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A flow path with multiple inlets and outlets is solved.
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Forced inflow and forced outflow are set one each.
Natural inflow/outflow is set to the three areas where it is not determined whether the flow is incoming or outgoing. -
Unless specified in the list below, the default conditions are applied.
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Obtain this session's project file. (Right-click and choose 'Save link as')
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Results will vary depending on Femtet version and the PC environment.
Analysis Space
|
Item |
Setting |
|
Analysis Space |
3D |
|
Model Unit |
mm |
Analysis Conditions
|
Item |
Tab |
Setting |
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Solver |
Solver Selection |
Fluid Analysis [Bernoulli] |
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Analysis Type |
Fluid Analysis |
Steady-state Analysis |
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Meshing Setup |
Mesh |
General Mesh Size: 5 [mm] |
Model
Body Attributes and Materials
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Body Number/Type |
Body Attribute Name |
Material Name |
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6/Solid |
Flow_path |
100_Water * |
* Available from the material DB
Boundary Condition
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Boundary Condition Name/Topology |
Tab |
Boundary Condition Type |
Setting |
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In_1/Face |
Fluid |
Inlet |
Forced Inflow Flow Velocity Specified: 0.1 [m/s] |
|
Out_1/Face |
Fluid |
Outlet |
Forced Outflow |
|
Inout_1/Face |
Fluid |
Inlet/Outlet |
Natural Inflow/Outflow |
|
Inout_2/Face |
Fluid |
Inlet/Outlet |
Natural Inflow/Outflow |
|
Inout_3/Face |
Fluid |
Inlet/Outlet |
Natural Inflow/Outflow |
Results
The vectors of the flow velocity are shown below.
The vectors are adjusted to the same length in the graphics setup.
Before the analysis, flow directions were unknown at three faces.
Inout1_1 has a flow in the inflow direction and Inout_2 and Inout_3 have flows in the outflow direction.
The table of the volumetric flow rate is shown as follows.
The inflow rate is shown in the positive value and the outflow rate in the negative values.
The sum of Inout_1 and In_1 gives the inflow rate of 11e-5 [m3/s] and
the sum of Inout_2 and Inout_3 and Out_1 gives the outflow rate of 4.15e-5 [m3/s].
The inflow and outflow rates are nearly balanced.
