Volume Velocity Source

R2026b

Ideal sinusoidal volume velocity source

Since R2026b

Libraries:
Simscape Acoustics / Acoustic Sources

Description

Add-On Required: This feature requires the Simscape Acoustics add-on.

The Volume Velocity Source block represents an ideal volume velocity source that maintains sinusoidal volume velocity through its output terminals, independent of the pressure across its terminals.

The output volume velocity is defined by the equation

$U = U_{0} + U_{1} \sin (2 π F t + ϕ)$

where:

U is the volume velocity.
U₀ is static flow.
U₁ is peak dynamic flow.
F is frequency.
φ is phase shift.
t is time.

Ports

Conserving

expand all

+ — Positive terminal
acoustic

Acoustic conserving port associated with the positive terminal.

- — Negative terminal
acoustic

Acoustic conserving port associated with the negative terminal.

Parameters

expand all

Static flow — Static flow
`0` m³/s (default) | scalar

Static flow, specified in m³/s.

Peak dynamic flow — Peak dynamic flow
`1` m³/s (default) | scalar

Peak dynamic flow, specified in m³/s.

Phase shift — Phase shift
`0` rad (default) | scalar

Phase shift, specified in radians.

Frequency — Volume velocity frequency
`60` Hz (default) | positive scalar

Volume velocity frequency, specified in Hz.

Version History

Introduced in R2026b

Volume Velocity Source

Description

Ports

Conserving

+ — Positive terminal acoustic

- — Negative terminal acoustic

Parameters

Static flow — Static flow 0 m3/s (default) | scalar

Peak dynamic flow — Peak dynamic flow 1 m3/s (default) | scalar

Phase shift — Phase shift 0 rad (default) | scalar

Frequency — Volume velocity frequency 60 Hz (default) | positive scalar