[soln-plugin-fwh]
Use Ffowcs Williams–Hawkings equation to approximate far field noise in a uniformly moving medium:
tstart
— time at which to start sampling, default is0
:float
dt
— time step between samples:float
file
— output file path; should the file already exist it will be appended to:string
header
— if to output a header row or not:boolean
surface
— a region the surface of which is saple for the FWH sovler, only use a combination of the geometric shapes specified in Regions:shape(args, ...)
quad-deg
— degree of surface quadrature rule (optional):int
quad-pts-{etype}
— name of surface quadrature rule (optional):string
observer-pts
— the obversation point in the far field at which noise is approximated:[(x, y), (x, y), ...]
|[(x, y, z), (x, y, z), ...]
rho, u, v, (w), p, (c)
— the constant far field properties of the flow. For incompressible calculations the sound speedc
and the dnsityrho
must be given:float
Example:
[soln-plugin-fwh]
file = fwh.csv
region = box((1, -5), (10, 5))
header = true
tstart = 10
dt = 1e-2
observer-pts = [(1, 10), (1, 30), (1, 100), (1, 300)]
rho = 1
u = 1
v = 0
p = 10