Use the Pressure node to define the boundary pressure at the pipe ends.
Enter a value or expression for the Pressure pin (SI unit: Pa). The default is 0 Pa.
In the frequency domain pin represents the amplitude and phase (if it is complex valued) of a harmonic pressure source.
In the time domain enter an expression for the pressure pin, for example, a forward moving sinusoidal wave of amplitude 1 Pa can be written as
1[Pa]*sin(omega*t-k*x), where
omega and
k are parameters defining the angular frequency and wave number, respectively.
) and select Advanced Physics Options in the Show More Options dialog.