In the two_phase_fluid.ssc domain file (located in: C:\Program Files\MATLAB\R2020a\toolbox\physmod\simscape\library\m\+foundation\+two_phase_fluid) does not include the fluid specific heat as a fluid property. Therefore, the tablelookup() function can not be used to find the fluid specific heat. The webpage: https://au.mathworks.com/help/physmod/simscape/lang/two-phase-fluid-domain.html shows that it is available but the domain file does not. The nu_TLU array in the two_phase_fluid.ssc file is not the specific heat but rather the kinematic viscosity as shown below.
nu_TLU = {[ ], 'mm^2/s'}; % Kinematic viscosity table
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