The following commands are commonly used in an acoustic analysis:
Table 2.2: Primary Acoustic Analysis Commands
Command | Comments |
APORT | Specifies parameters for the plane wave and acoustic duct port. |
ASIFILE | Defines writing or reading the one-way acoustic-structural coupling data to or from a file. |
ASOL | Specify an acoustic harmonic analysis with the scattered pressure formulation. |
ASCRES | Output control for an acoustic scattering analysis. |
AWAVE | Defines the analytic acoustic incident wave source. |
DFSWAVE | Specifies the incident planar waves with random phases for a diffuse sound field. |
ECPCHG | Optimizes degree-of-freedom usage in a coupled acoustic model. |
FLUREAD | Reads one-way Fluent-to-Mechanical APDL coupling data via a .cgns file with one-side fast Fourier transformation complex pressure peak value. |
HFANG | Defines spatial angles of a spherical radiation surface for an acoustic radiator. |
HFSYM | Indicates the presence of symmetry planes for the computation of an acoustic field in the near- or far-field domains (beyond the finite element region). |
MRPM | Defines the frequency of machine rotation in revolutions per minute. |
MSOLVE | Starts multiple solutions for random acoustics analysis with diffuse sound field. |
PLAS | Plots a specified acoustic quantity on the selected exterior surface, energy on the selected elements, or the frequency-band sound pressure level (SPL) on the nodes over a frequency range. |
PLFAR | Plots acoustic far-field parameters. |
PLNEAR | Plots the acoustic parameters in the near zone exterior to the equivalent source surface. |
PMLOPT | Defines perfectly matched layers (PML) or irregular perfectly matched layers (IPML). |
PMLSIZE | Determines the number of PML or IPML layers. |
PRAS | Prints a specified acoustic quantity on the selected exterior surface, energy on the selected elements, or the frequency-band sound pressure level (SPL) on the nodes over a frequency range. |
PRFAR | Prints acoustic far-field parameters. |
PRNEAR | Prints the acoustic parameters in the near zone exterior to the equivalent source surface. |
PSYS | Sets the PML element coordinate system attribute pointer. |
Table 2.3: Secondary Acoustic Analysis Commands
Command | Comments |
ANTYPE | Sets a flag indicating whether a subsequent linear perturbation will be performed. |
BF | Defines the acoustic body loads. |
CP | Couples nodes for the Floquet periodic boundary condition. |
CPCYC | Couples nodes for the Floquet periodic boundary condition (cyclic symmetry). |
*GET | Obtains acoustic parameters in post-processing. |
HARFRQ | Defines the frequency range in the harmonic analysis, including the octave bands. |
LDREAD | Reads mean flow results from the results file and applies them as loads. |
MORPH | Specify the morphing operation in an acoustic linear perturbation. |
NSOL | Prints the solution results for nodes. |
PLESOL | Plots the acoustic solution results for elements. |
PRESOL | Prints the acoustic solution results for elements. |
PLNSOL | Plots the acoustic solution results for nodes. |
PRNSOL | Prints the acoustic solution results for nodes. |
SF | Defines the acoustic surface loads and flags. |
TB | Defines the acoustic frequency-dependent materials, the equivalent model of perforated materials, and the viscous-thermal model. |
/UNITS | Annotates the database with the system of units used for acoustic default values. |