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# Example6Flow Path with Multiple Inlets and Outlets

### General

• A flow path with multiple inlets and outlets is solved.

• Forced inflow and forced outflow are set one each.
Natural inflow/outflow is set to the three areas where it is not known if the flow is incoming or outgoing.

• Unless specified in the list below, the default conditions are applied.

### Analysis Space

 Item Setting Analysis Space 3D Model Unit mm

### Analysis Conditions

 Item Tab Setting Solver Solver selection Fluid analysis [Bernoulli] Analysis Type Fluid analysis Steady-state analysis Meshing Setup Mesh General mesh size: 5[mm]

### Body Attributes and Materials

 Body Number/Type Body Attribute Name Material Name 6/Solid Path 100_Water *

* Available from the material DB

### Boundary Condition

 Boundary Condition Name/Topology Tab Boundary Condition Type Setting in_1/Face Fluid Inlet Forced inflow Specify flow velocity: 0.1[m/s] out_1/Face Fluid Outlet Forced outflow Specify pressure: -1[Pa] 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.

For the three areas where it was not know if they were inflow or outflow before the analysis,
the result shows that inout_1 is inflow, inout_2 and inout_3 are outflow.

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.

For the inflow rate, inout_1 and in_1 are added totaling 4.11e-5[m3/s].
For the outflow rate, inout_2, inout_3, and out_1 are added totaling 4.15e-5[m3/2].
The inflow face and the outflow rate are almost balanced.

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