AI 中文总结
本文研究零重力下壁面加热的静止简单流体的对流可能性，发现低普朗特数流体在几何不均匀性满足条件时可形成稳定循环态，且定量解释了纯体积效应无法单独诱导常规流体零重力对流的原因。
AI 中文摘要
本文探讨零重力条件下，壁面加热的静止简单流体发生对流的可能性。研究表明，低普朗特数（low-Prandtl-number）流体在零重力下存在稳定循环状态，且不会使扩散态失稳，前提是几何不均匀性允许热循环产生净机械功。该分析定量解释了为何纯体积效应无法单独诱导常规流体在零重力下发生对流。
英文摘要
The possibility of convection in a wall-heated unstirred simple fluid in zero-gravity conditions is discussed. It is shown that a low-Prandtl-number fluid possesses a stable circulating state in zero gravity, without destabilization of the diffusive state, provided geometric inhomogeneity allows the thermal cycle to perform net mechanical work. The analysis provides a quantitative explanation of why purely volumetric effects cannot induce by themselves convection in conventional fluids under zero-gravity conditions.
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