Here is an introduction to heat flux, including the factors influencing heat flux and how to calculate the heat flux equation.
Heat Conduction Boundary Conditions
Heat Equation - Heat Conduction Equation, Definition
Energies, Free Full-Text
Modes of Heat Transfer: Conduction, Convection and Radiation
Enthalpy Equations and Their Role in Fluid Systems Analysis, System Analysis Blog
What is Transport Equation?, SimWiki
Simulating Conductive Heat Transfer
Effectiveness of Nonuniform Heat Generation (Sink) and Thermal Characterization of a Carreau Fluid Flowing across a Nonlinear Elongating Cylinder: A Numerical Study
A set of equations that may be used to calculate heat fluxes in
Interface Boundary Condition