BackgroundField

class osaft.core.backgroundfields.BackgroundField(fluid, p_0, wave_type=WaveType.STANDING, position=None)

Bases: object

BackgroundField class which is a base class for all background field classes

Parameters:

• fluid (InviscidFluid) – fluid for to be used for the background field

• p_0 (float) – pressure amplitude in [Pa]

• wave_type (WaveType, optional) – wave type: either standing or traveling / travelling

  Default: WaveType.STANDING

• position (Optional[float], optional) – position of the scatterer in the standing wave in [rad]

  Default: None

Public Data Attributes:

p_0	Background pressure amplitude of the acoustic field [Pa]
wave_type	Wave type of the acoustic background field
position	Position of the particle in an acoustic standing wave field [rad]
abs_pos	Absolute position of the scatterer in the standing wave in [m]
A	Amplitude of the pressure wave [Pa]
abs_A_squared	\(A\,\text{conj}(A) = |A|^2\) [Pa^2]
E_ac	Mean acoustic energy density [J/m^3]
I_ac	Acoustic intensity / energy flux density [W/m^2]
f	wrapper for osaft.core.fluids.InviscidFluid.f
omega	wrapper for osaft.core.fluids.InviscidFluid.omega
c_f	wrapper for osaft.core.fluids.InviscidFluid.c_f
rho_f	wrapper for osaft.core.fluids.InviscidFluid.rho_f
eta_f	wrapper for osaft.core.fluids.ViscousFluid.eta_f
zeta_f	wrapper for osaft.core.fluids.ViscousFluid.zeta_f
eta_p	wrapper for osaft.core.fluids.ViscoelasticFluid.eta_p
zeta_p	wrapper for osaft.core.fluids.ViscoelasticFluid.zeta_p
lambda_M	wrapper for osaft.core.fluids.ViscoelasticFluid.lambda_M
lambda_f	wrapper for osaft.core.fluids.InviscidFluid.lambda_f
k_f	wrapper for osaft.core.fluids.InviscidFluid.k_f
k_v	wrapper for osaft.core.fluids.ViscousFluid.k_v
kappa_f	wrapper for osaft.core.fluids.ViscousFluid.kappa_f

Public Methods:

A_in(n)

Incident amplitude at order n [Pa]

---

A_in(n)

Incident amplitude at order n [Pa]

Parameters:

n (int) – order

Return type:

complex

property A: complex

Amplitude of the pressure wave [Pa]

property E_ac: float

Mean acoustic energy density [J/m^3]

property I_ac: float

Acoustic intensity / energy flux density [W/m^2]

property abs_A_squared: float

\(A\,\text{conj}(A) = |A|^2\) [Pa^2]

property abs_pos: float

Absolute position of the scatterer in the standing wave in [m]

property c_f: float

wrapper for osaft.core.fluids.InviscidFluid.c_f

property eta_f: float

wrapper for osaft.core.fluids.ViscousFluid.eta_f

property eta_p: float

wrapper for osaft.core.fluids.ViscoelasticFluid.eta_p

property f: float

wrapper for osaft.core.fluids.InviscidFluid.f

property k_f: float

wrapper for osaft.core.fluids.InviscidFluid.k_f

property k_v: complex

wrapper for osaft.core.fluids.ViscousFluid.k_v

property kappa_f: float

wrapper for osaft.core.fluids.ViscousFluid.kappa_f

property lambda_M: float

wrapper for osaft.core.fluids.ViscoelasticFluid.lambda_M

property lambda_f: float

wrapper for osaft.core.fluids.InviscidFluid.lambda_f

property omega: float

wrapper for osaft.core.fluids.InviscidFluid.omega

property p_0: float

Background pressure amplitude of the acoustic field [Pa]

Getter:

returns the value for the pressure amplitude

Setter:

automatically invokes osaft.core.variable.BaseVariable.notify()

property position: float

Position of the particle in an acoustic standing wave field [rad]

Getter:

returns the wave type

Setter:

automatically invokes osaft.core.variable.BaseVariable.notify()

property rho_f: float

wrapper for osaft.core.fluids.InviscidFluid.rho_f

property wave_type: WaveType

Wave type of the acoustic background field

Getter:

returns the wave type

Setter:

automatically invokes osaft.core.variable.BaseVariable.notify()

property zeta_f: float

wrapper for osaft.core.fluids.ViscousFluid.zeta_f

property zeta_p: float

wrapper for osaft.core.fluids.ViscoelasticFluid.zeta_p