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arXiv 2206.03046physics.flu-dynmath-phmath.MP
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浮力流的Boussinesq近似

The Boussinesq approximation for buoyant flows

Antonio Barletta

AI总结:

本文针对浮力流的Boussinesq近似,提出一种简化且严格的控制方程推导方法,基于一般流体的局部平衡方程,通过分析渐近极限下的首阶项完成推导,并纳入粘性耗散效应的考量。

摘要:

本文的目的是给出浮力流Boussinesq近似控制方程的一种简化但严格的推导。为开展核心推导过程,本文讨论了现有文献中多种渐近分析的一个简化版本。本研究采用的方法聚焦于适用于一般流体(不一定是牛顿流体)的局部平衡方程。分析过程通过论证表征该近似的渐近极限下控制方程中的首阶项来开展,同时也考虑了粘性耗散效应的作用。

英文摘要:

The aim of this communication is to present a simplified, yet rigorous, deduction of the Boussinesq approximated governing equations for buoyant flows. In order to carry out the core deduction procedure, a simplified version of the manifold asymptotic analyses available in the literature is discussed. The method adopted in this study is focussed on the local balance equations valid for a general, not necessarily Newtonian, fluid. The analysis is carried out by demonstrating the leading order terms in the governing equations for the asymptotic limit which characterises the approximation. The role played by the effect of viscous dissipation is also taken into account.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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