You use the Port In Duct excitation condition is used to create an incident wave and acoustic duct ports.
Analysis Types
The Port In Duct loading condition is available for Coupled Field Harmonic and Harmonic Acoustics analyses.
Common Characteristics
This section describes the characteristics of the boundary condition, including the application requirements, support limitations, and loading definitions and values.
Dimensional Types
3D Simulation: Supported.
2D Simulation: Not Supported.
Scoping
The Port In Duct excitation scoped using the Port object.
The Port In Duct excitation condition is defined as a constant only.
Boundary Condition Application
To apply a Port In Duct:
On the Environment Context tab: select > Port In Duct. Or, right-click the Environment tree object or click in the Geometry window and select > > Port In Duct.
Define Port Attribution, Wave Type, Coordinate System.
Define Pressure Amplitude & Phase Angle
Define Width, Height, and Mode indices along width and height for Wave Type = Rectangular Duct
Define Radius, and Mode indices along azimuth and radii for Wave Type = Circular Duct
Select a Port from the available Ports
Details View Properties
The selections available in the Details view are described below.
Category | Fields/Options/Description |
---|---|
Definition |
Type: Read-only field that describes the object – . Port Attribution: This property provides the options and . Wave Type: This property provides the following options.
Coordinate System: Drop-down list of available coordinate systems. Global Coordinate System is the default. The Local Coordinate System should be chosen such that the cross section of lies in X-Y Plane. Specification of the following inputs are required based on Wave Type.
For Wave Type = , define the following rectangular duct properties:
For Wave Type = , define the following circular duct properties:
Port Selection: Select a port from drop-down list of available valid ports. The option for Port Behavior is supported. Suppressed: Include ( - default) or exclude ( ) the boundary condition. |
Mechanical APDL References and Notes
The command APORT is used to apply the Acoustic Port In Duct excitation condition. For more information, refer to the Specified Mode Excitation in an Acoustic Duct section in the Mechanical APDL Acoustic Analysis Guide.
API Reference
See the Port In Duct section of the ACT API Reference Guide for specific scripting information.