ViscousFluid

class osaft.core.fluids.ViscousFluid(frequency, rho, c, eta_f, zeta_f)[source]

Bases: InviscidFluid

Class for a viscous fluid

Parameters

frequency (int | float | Frequency) – frequency in [Hz]
rho (float) – density in [km/m^3]
c (float) – speed of sound [m/s]
eta_f (float) – shear viscosity [Pa s]
zeta_f (float) – bulk viscosity [Pa s]

Public Data Attributes:

`eta_f`	Shear viscosity \(\eta_f\) [Pa s].
`zeta_f`	Bulk viscosity \(\zeta_f\) [Pa s].
`k_f`	Returns the wave number \(k_f\) [1/m]
`k_v`	Returns the viscous wave number \(k_v\) [1/m]
`delta`	Returns the boundary layer thickness \(\delta\) [m]
`lambda_v`	Returns the viscous wave length \(\lambda_v\) [m]

Inherited from InviscidFluid

`c_f`	Speed of sound \(c_f\) [ms].
`rho_f`	Density \(\rho_f\) [kg/m^3].
`kappa_f`	Returns the compressibility \(\kappa_f\) [1/Pa]
`k_f`	Returns the wave number \(k_f\) [1/m]
`lambda_f`	Returns the wavelength \(\lambda_f\) [m]

Inherited from BaseFrequencyComposite

`f`	wrapper for `osaft.core.frequency.Frequency.f`
`omega`	wrapper for `osaft.core.frequency.Frequency.omega`

Public Methods:

Inherited from BaseFrequencyComposite

input_variables()

Returns all properties that are settable.

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 c_f: float

Speed of sound \(c_f\) [ms].

Getter: returns the value for the frequency
Setter: automatically invokes osaft.core.variable.BaseVariable.notify()
Return type: float

property delta: float

Returns the boundary layer thickness \(\delta\) [m]

Return type: float

property eta_f: float

Shear viscosity \(\eta_f\) [Pa s].

Getter: returns the shear viscosity
Setter: automatically invokes osaft.core.variable.BaseVariable.notify()
Return type: float

property f: float

wrapper for osaft.core.frequency.Frequency.f

Return type: float

property k_f: complex

Returns the wave number \(k_f\) [1/m]

Return type: complex

property k_v: complex

Returns the viscous wave number \(k_v\) [1/m]

Return type: complex

property kappa_f: float

Returns the compressibility \(\kappa_f\) [1/Pa]

Return type: float

property lambda_f: float

Returns the wavelength \(\lambda_f\) [m]

Return type: float

property lambda_v: float

Returns the viscous wave length \(\lambda_v\) [m]

Return type: float

property omega: float

wrapper for osaft.core.frequency.Frequency.omega

Return type: float

property rho_f: float

Density \(\rho_f\) [kg/m^3].

Getter: returns the value for the density
Setter: automatically invokes osaft.core.variable.BaseVariable.notify()
Return type: float

property zeta_f: float

Bulk viscosity \(\zeta_f\) [Pa s].

Getter: returns the bulk viscosity
Setter: automatically invokes osaft.core.variable.BaseVariable.notify()
Return type: float