ARF
Examples using this class are:
- class osaft.solutions.settnes2012.arf.ARF(f, R_0, rho_s, c_s, rho_f, c_f, eta_f, p_0, wave_type, position=None)[source]
Bases:
BaseARF,BaseSphereFrequencyComposite,BaseSolutionARF class for Settnes and Bruus (2012)
The standing wave solution is based on Eqs. (50a) - (50b) of the paper and the traveling wave solution on Eq (48).
Note
This model is based on the following assumptions: - \(\lambda \gg R_0, \, \delta\)
Note
The expression for the travelling wave has been corrected. The expression in the article by Settnes & Bruus was off by a factor of 2. The error was reported in an article Marston (2013)
- Parameters
f (Frequency | float | int) – Frequency [Hz]
R_0 (Sphere | float | int) – Radius of the sphere [m]
rho_s (float) – Density of the sphere [kg/m^3]
c_s (float) – Speed of sound of the fluid-like sphere [m/s]
rho_f (float) – Density of the fluid [kg/m^3]
c_f (float) – Speed of sound of the fluid [m/s]
eta_f (float) – Dynamic viscosity of the fluid [Pa s]
p_0 (float) – Pressure amplitude of the field [Pa]
wave_type (WaveType) – Type of incident wave (traveling/standing)
position (None | float, optional) – Position in the standing wave field [rad]
Default:NonePublic Data Attributes:
supported_wavetypesMonopole scattering coefficient \(f_1\) [-]
Dipole scattering coefficient \(f_2\) [-]
Normalized boundary layer thickness \(\tilde{\delta}\) [-]
Dimensionless variable \(\gamma\) [-]
Compressibility ratio \(\tilde{\kappa}\) [-]
Density ratio \(\tilde{\rho}\) [-]
Acoustic contrast factor \(\Phi\) [-]
Wraps to
osaft.core.backgroundfields.BackgroundField.positionWraps to
osaft.core.backgroundfields.BackgroundField.wave_typeWraps to
osaft.core.fluids.InviscidFluid.rho_sWraps to
osaft.core.fluids.InviscidFluid.c_sWraps to
osaft.core.fluids.ViscousFluid.rho_fWraps to
osaft.core.fluids.ViscousFluid.c_fWraps to
osaft.core.fluids.ViscousFluid.eta_fWraps to
osaft.core.fluids.ViscousFluid.k_fWraps to
osaft.core.fluids.ViscousFluid.k_fInherited from
BaseSphereFrequencyCompositeWrapper for
osaft.core.geometries.Sphere.R_0Wrapper for
osaft.core.geometries.Sphere.areaWrapper for
osaft.core.geometries.Sphere.volumeInherited from
BaseFrequencyCompositewrapper for
osaft.core.frequency.Frequency.fwrapper for
osaft.core.frequency.Frequency.omegaInherited from
BaseSolutionsupported_wavetypesWraps to
osaft.core.backgroundfields.BackgroundField.wave_typePublic Methods:
Computes the ARF and returns the force in Newton [N].
Inherited from
BaseARFReturns the value for the ARF in Newton [N].
Inherited from
BaseFrequencyCompositeReturns all properties that are settable.
- check_wave_type()
Checks if
wave_typeis insupported_wavetypes- Raises
WrongWaveTypeError – If
wave_typeis not supported- Return type
None
- compute_arf()[source]
Computes the ARF and returns the force in Newton [N].
Computes ARF according to Eq. (47a) - (47e) for standing wave case or according to Eq. (48) for the travelling wave case. Checks before computation of assumption of theory small particle radius to pressure field wavelength is valid.
- Raises
WrongWaveTypeError – if wrong
wave_typeAssumptionWarning – if the used parameters might not be valid for the chosen limiting case
- Return type
float
- copy()
Returns a copy of the object
- Return type
- classmethod input_variables()
Returns all properties that are settable.
Returns a list of the names of all properties that are settable, i.e. all properties that wrap a PassiveVariable.
- Return type
list[str]
- property E_ac: float
Wraps to
osaft.core.backgroundfields.BackgroundField.E_ac- Return type
float
- property Phi: float
Acoustic contrast factor \(\Phi\) [-]
- Return type
float
- property R_0: float
Wrapper for
osaft.core.geometries.Sphere.R_0- Return type
float
- property area: float
Wrapper for
osaft.core.geometries.Sphere.area- Return type
float
- property c_f: float
Wraps to
osaft.core.fluids.ViscousFluid.c_f- Return type
float
- property c_s: float
Wraps to
osaft.core.fluids.InviscidFluid.c_s- Return type
float
- property delta
Wraps to
osaft.core.fluids.ViscousFluid.k_f
- property delta_t: float
Normalized boundary layer thickness \(\tilde{\delta}\) [-]
(Eq. 34)
- Return type
float
- property eta_f: float
Wraps to
osaft.core.fluids.ViscousFluid.eta_f- Return type
float
- property f: float
wrapper for
osaft.core.frequency.Frequency.f- Return type
float
- property f_1: float
Monopole scattering coefficient \(f_1\) [-]
(Eq. 26)
- Return type
float
- property f_2: complex
Dipole scattering coefficient \(f_2\) [-]
(Eq. 39)
- Return type
complex
- property gamma: complex
Dimensionless variable \(\gamma\) [-]
(Eq. 38)
- Return type
complex
- property k_f: complex
Wraps to
osaft.core.fluids.ViscousFluid.k_f- Return type
complex
- property kappa_f: float
Wraps to
osaft.core.fluids.ViscousFluid.kappa_f- Return type
float
- property kappa_s: float
Wraps to
osaft.core.fluids.InviscidFluid.kappa_f- Return type
float
- property kappa_t: float
Compressibility ratio \(\tilde{\kappa}\) [-]
(Eq. 26)
- Return type
float
- property omega: float
wrapper for
osaft.core.frequency.Frequency.omega- Return type
float
- property p_0: float
Wraps to
osaft.core.backgroundfields.BackgroundField.p_0- Return type
float
- property position: float
Wraps to
osaft.core.backgroundfields.BackgroundField.position- Return type
float
- property rho_f: float
Wraps to
osaft.core.fluids.ViscousFluid.rho_f- Return type
float
- property rho_s: float
Wraps to
osaft.core.fluids.InviscidFluid.rho_s- Return type
float
- property rho_t: float
Density ratio \(\tilde{\rho}\) [-]
(Eq. 39)
- Return type
float
- property volume: float
Wrapper for
osaft.core.geometries.Sphere.volume- Return type
float
- property wave_type: WaveType
Wraps to
osaft.core.backgroundfields.BackgroundField.wave_type- Return type