เปรียบเทียบวิธี

	การประมาณแบบบูสเนสค์	การแพร่แบบสเตฟาน-แมกซ์เวลล์	วัฏจักรการอัดไอ
สาขาวิชา	อุณหพลศาสตร์	อุณหพลศาสตร์	อุณหพลศาสตร์
ตระกูล	Process / pipeline	Process / pipeline	Process / pipeline
ปีกำเนิด	1903	1871	1834
ผู้ริเริ่ม	Joseph Boussinesq	Josef Stefan and James Clerk Maxwell	Jacob Perkins
ประเภท	Approximation technique	Diffusion equation	Thermodynamic cycle
แหล่งต้นตำรับ	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	Stoecker, W. F., Jones, J. W., & Sunnam, B. A. (1998). Refrigeration and Air Conditioning (2nd ed.). McGraw-Hill. ISBN: 978-0070613638
ชื่อเรียกอื่น	buoyancy approximation, Boussinesq model	Stefan-Maxwell equation, multicomponent diffusion	refrigeration cycle, heat pump cycle
ที่เกี่ยวข้อง	3	3	3
สรุป	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 Vapor Compression Cycle is the fundamental thermodynamic cycle for refrigeration systems and heat pumps. It describes how mechanical work is used to transfer heat from a cold space (evaporator) to a warm space (condenser), operating against the natural temperature gradient. The cycle consists of four processes: isentropic compression, isobaric condensation, isenthalpic throttling, and isobaric evaporation.