singlePhaseTransportModel laminarTransport(U, phi);
// Density [kg/m^3]
dimensionedScalar rho(laminarTransport.lookup("rho"));
// Heat capacity [J/kgK]
dimensionedScalar Cp(laminarTransport.lookup("Cp"));
// Thermal expansion coefficient [1/K]
dimensionedScalar beta(laminarTransport.lookup("beta"));
// Reference temperature [K]
dimensionedScalar TRef(laminarTransport.lookup("TRef"));
// Laminar Prandtl number
dimensionedScalar Pr(laminarTransport.lookup("Pr"));
// Turbulent Prandtl number
dimensionedScalar Prt(laminarTransport.lookup("Prt"));