Use an Inlet node to define where the vector field starts. Select the boundaries to define as the vector field’s inlet in the Boundary Selection section.
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For the Diffusion Method, the Inlet node sets a condition on a value or a flux depending on what you choose from the Condition on list in the Inlet section:
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Choose Flux to specify that
 , where the flux F is 1 by default. For example, if you add a Flux boundary condition, stating that the normal flux is 1, you can combine that boundary condition with an Outlet boundary condition U = 0. Then the potential represents the path length from the Outlet boundary. |
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For the Adaptive Method, the Inlet node identifies a set of exterior boundaries where the vector field enters orthogonally the domain selection. A red arrow in the Graphics window shows the direction of the vector field on the boundary. Select the Reverse direction check box to reverse the direction of the vector field.
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For the Elasticity Method, an Inlet node with no selection is added by default. It sets
 at the inlet. |
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For the Flow Method you can choose, in the Inlet section, to define the type of inlet using the Type list:
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Choose Normal velocity to specify the normal velocity u·n as a velocity un (default value: 1, SI unit: m/s) in the Velocity field.
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Choose Velocity field to specify the components of the velocity field uin in the text fields under Velocity (default: 0, SI unit: m/s). In the Coordinate System Selection section, you can select any coordinate system for the Component from the Coordinate system list to use as the coordinate system for defining the velocity field. The Global coordinate system is the default.
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