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	Aproksymacja Boussinesqa	Dyfuzja Stefana-Maxwella	Sieć oporów cieplnych
Dziedzina	Termodynamika	Termodynamika	Termodynamika
Rodzina	Process / pipeline	Process / pipeline	Process / pipeline
Rok powstania	1903	1871	1985
Twórca	Joseph Boussinesq	Josef Stefan and James Clerk Maxwell	Frank Incropera and David DeWitt
Typ	Approximation technique	Diffusion equation	Heat transfer network analysis
Źródło pierwotne	Boussinesq, J. (1903). Théorie Analytique de la Chaleur. Gauthier-Villars.	Reid, R. C., Prausnitz, J. M., & Poling, B. E. (1987). The Properties of Gases and Liquids (4th ed.). McGraw-Hill. ISBN: 978-0071247009	Incropera, F. P., DeWitt, D. P., Bergman, T. L., & Lavine, A. S. (2007). Fundamentals of Heat and Mass Transfer (6th ed.). Wiley. ISBN: 978-0470055540
Inne nazwy	buoyancy approximation, Boussinesq model	Stefan-Maxwell equation, multicomponent diffusion	thermal circuit analogy, thermal network
Pokrewne	3	3	3
Podsumowanie	The Boussinesq Approximation simplifies the governing equations for natural convection by treating density as constant except in the buoyancy term. This approximation is valid when temperature variations produce small density changes and allows researchers to solve coupled heat-fluid flow problems without solving the full, nonlinear compressibility equations. The Boussinesq Approximation is fundamental to analyzing buoyancy-driven flows in buildings, enclosures, and geophysical applications.	The Stefan-Maxwell diffusion equation describes how multiple chemical species diffuse through each other in a mixture, accounting for interactions between all species pairs. Unlike Fick's law, which assumes species diffuse independently, Stefan-Maxwell theory captures the coupling that occurs when species with different diffusivities move at different rates. This is essential for analyzing gas separation, combustion, catalytic processes, and reactive distillation.	The Thermal Resistance Network method uses electrical circuit analogy to solve heat transfer problems. It treats heat flow as analogous to electric current, thermal resistance analogous to electrical resistance, and temperature difference analogous to voltage potential. This powerful conceptual framework enables engineers to analyze complex multi-layer heat transfer systems systematically.