自振荡流体热机(SOFHE)中液塞摩擦力的研究

2019 19th International Conference on Micro and Nanotechnology for Power Generation and Energy Conversion Applications (PowerMEMS) Pub Date : 2019-12-01 DOI:10.1109/PowerMEMS49317.2019.92321106939

A. Nikkhah, A. Tessier-Poirier, N. Karami, O. Abouali, L. Fréchette

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引用次数: 3

摘要

本文采用数值模拟的方法研究了自振荡流体热机(SOFHE)在层流状态下振荡液体塞的摩擦力，并与分析关系和实验测量结果进行了比较。我们研究了长径比(L/D)的变化对液体塞的影响，并将结果与无限长液体塞的解析解进行了比较，以阐明半月板附近速度场的影响(末端效应)。结果表明，尽管速度尚未完全开发，但无限液体塞的解析解可用于$L/D\ gt10 $，精度可接受。为考虑$L/D $ lt $ 10的末端效应，需要进行修改。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Investigation of the Liquid Plug Friction Force in the Self-Oscillating Fluidic Heat Engine (SOFHE)

We investigate the friction force of the oscillating liquid plug in a self-oscillating fluidic heat engine (SOFHE) in the laminar regime using numerical simulations, compared to analytical relations and experimental measurements. We study the effect of varying the length to diameter ratio (L/D) and compare the results to the analytical solutions for an infinite length liquid plug, in order to clarify the impact of velocity field near the menisci (end effects). The results showed that the analytical solution for an infinite liquid plug can be used for $L/D\gt 10$ with acceptable accuracy, despite the velocity not being fully developed. Modifications are required to account for end effects for $L/D\lt 10$.

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2019 19th International Conference on Micro and Nanotechnology for Power Generation and Energy Conversion Applications (PowerMEMS)

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