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	ブシネスク近似	熱抵抗ネットワーク
分野	熱力学	熱力学
系統	Process / pipeline	Process / pipeline
提唱年	1903	1985
提唱者	Joseph Boussinesq	Frank Incropera and David DeWitt
種類	Approximation technique	Heat transfer network analysis
原典	Boussinesq, J. (1903). Théorie Analytique de la Chaleur. Gauthier-Villars.	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
別名	buoyancy approximation, Boussinesq model	thermal circuit analogy, thermal network
関連	3	3
概要	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 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.