Theory
A section is a plane normal to x, y or z at a percentage of the model's extent. It is sampled on a regular grid inside the gas, where the active intensity is summed. The part of a plane inside a packing is left out and reported. Details: Additional acoustic results: receivers, section power, dissipation, flow effect. For one frequency, the Results step's acoustic field plot gives the same power on any section without a new run.
Equations
(1)
| where | meaning | unit |
|---|---|---|
| Net power through the plane, positive along its normal | W | |
| Area weight: exact gas area of the plane over the number of samples (spacing 1/90 of the longest size) | m² | |
| Pressure and normal particle velocity at a sample | Pa, m/s |
Default and rule
- Default
- off
- Rule
Off.
Valid range on | off
Cost
About 2 % of the sweep.
Packing
The area inside a packing is not counted.