The core principle is the derivation and application of general differential conservation equations for mass and energy within Cartesian coordinate systems using a shell balance method. This theory formally defines the accumulation, convective transport, diffusive flux (via Fick's law), and source/sink terms to establish a unified framework describing unidirectional or multi-dimensional transport phenomena in fluid systems belonging to chemical engineering and transport processes. The concept relates its parent discipline by providing closed-form partial differential equations that govern field variables like concentration and temperature, requiring specific initial conditions and boundary conditions for solution due to their first-order time dependence and second-order spatial derivatives.
The core principle is the derivation and application of general differential conservation equations for mass and energy within Cartesian coordinate systems using a shell balance method. This theory f…