==================== Transport Properties ==================== Transport --------- .. mat:class:: Transport(th, model, loglevel) Transport class constructor. Create a new instance of class :mat:func:`Transport`. One to three arguments may be supplied. The first must be an instance of class :mat:func:`ThermoPhase`. The second (optional) argument is the type of model desired, specified by the string ``'default'`` or a specific transport model name such as ``'mixture-averaged'`` or ``'multicomponent'``. ``'default'`` uses the default transport specified in the phase definition. The third argument is the logging level desired. :param th: Instance of class :mat:func:`ThermoPhase` :param model: String indicating the transport model to use. Possible values are ``'default'``, ``'none'``, ``'mixture-averaged'``, and ``'multicomponent'``, among others. Optional. :param loglevel: Level of diagnostic logging. Default if not specified is 4. :return: Instance of class :mat:func:`Transport` .. mat:function:: binDiffCoeffs(a) Get the binary diffusion coefficents. :param a: Instance of class :mat:func:`Transport` (or another object derived from Transport) for which binary diffusion coefficients are desired. :return: A matrix of binary diffusion coefficients. The matrix is symmetric: d(i,j) = d(j,i). Units: m**2/s .. mat:function:: electricalConductivity(a) Get the electrical conductivity. :param a: Instance of class :mat:func:`Transport` (or another object derived from Transport) for which the electrical conductivity is desired. :return: Electrical conductivity in S/m .. mat:function:: mixDiffCoeffs(a) Get the mixture-averaged diffusion coefficients. Object ``a`` must belong to a class derived from Transport, and that was constructed using a model that implements mixture-averaged transport properties. If not, you will get the error message :: **** Method getMixDiffCoeffs not implemented. **** In this case, create a new gas mixture model that uses a mixture-averaged transport manager, for example:: >> gas = GRI30('mixture-averaged'); See also: :mat:func:`MultiDiffCoeffs` :param a: Instance of class :mat:func:`Transport` (or another object derived from Transport) for which mixture-averaged diffusion coefficients are desired. :return: Vector of length nSpecies with the mixture-averaged diffusion coefficients. Units: m**2/s .. mat:function:: multiDiffCoeffs(a) Get the multicomponent diffusion coefficients. Object ``a`` must belong to a class derived from Transport, and that was constructed by specifying the ``'multicomponent'`` option. If ``'multicomponent'`` was not specified, you will get the error message :: **** Method getMultiDiffCoeffs not implemented. **** In this case, try method :mat:func:`mixDiffCoeffs`, or create a new gas mixture model that uses a mixture-averaged transport manager, for example:: >> gas = GRI30('multicompnent'); :param a: Instance of class :mat:func:`Transport` (or another object derived from Transport) for which multicomponent diffusion coefficients are desired. :return: Matrix of size [nSpecies, nSpecies] with the multicomponent diffusion coefficients D(i,j), the diffusion coefficient for species i due to concentration gradients in species j. Units: m^2/s .. mat:function:: setThermalConductivity(tr, lam) Set the thermal conductivity. This method can only be used with transport models that support directly setting the value of the thermal conductivity. :param tr: Instance of class :mat:func:`Transport` (or another object derived from Transport) :param lam: Thermal conductivity in W/(m-K) .. mat:function:: thermalConductivity(a) Get the thermal conductivity. :param a: Instance of class :mat:func:`Transport` (or another object derived from Transport) for which the thermal conductivity is desired. :return: Thermal conductivity. Units: W/m-K .. mat:function:: thermalDiffCoeffs(a) Get the thermal diffusion coefficients. Object ``a`` must belong to a class derived from Transport, and that was constructed by specifying the ``'multicomponent'`` option. If ``'multicomponent'`` was not specified, the returned values will all be zero. :param a: Instance of class :mat:func:`Transport` (or another object derived from Transport) for which the thermal diffusion coefficients are desired. :return: Vector of thermal diffusion coefficients of length nSpecies .. mat:function:: viscosity(a) Get the dynamic viscosity. :param a: Instance of class :mat:func:`Transport` (or another object derived from Transport) for which the viscosity is desired. :return: Dynamic viscosity. Units: Pa*s