Bulk nanobubbles-colloid fluid electroconvection

IF 2.6 3区工程技术 Q2 ENGINEERING, MECHANICAL

International Journal of Heat and Fluid Flow Pub Date : 2025-07-11 DOI:10.1016/j.ijheatfluidflow.2025.109907

Francisco J. Arias

引用次数: 0

Abstract

In recent years, bulk nanobubbles (BNBs) have caught the attention of scientific and engineering community owing to their singular physicochemical features. One of these features is their strong electric charge which is believed to play an important role in their unexpected stability. The electric charge of BNBs open an unexplored possibility for heat and fluid flow. Here and in complete analogy with ferrofluids, it is investigated the induced electroconvection for a colloidal dispersion of subdomain electric BNBs (bulk nanobubbles-colloid fluid) in a liquid carrier — whose concentration is high enough to show a collective behavior similar than that shown by magnetic particles in a ferrofluid, and under the influence of an electrical field. Utilizing a simplified model an expression for the electroconvective Rayleigh number was derived.

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大块纳米气泡-胶体流体电对流

近年来，体纳米气泡以其独特的物理化学特性引起了科学界和工程界的广泛关注。这些特征之一是它们的强电荷，这被认为在它们意想不到的稳定性中起着重要作用。bnb的电荷为热和流体流动打开了一种未知的可能性。在这里，与铁磁流体完全相似，研究了在液体载体中亚域电bnb（体纳米气泡-胶体流体）胶体分散的感应电对流，其浓度足够高，在电场的影响下，表现出与铁磁流体中磁性颗粒相似的集体行为。利用简化模型推导了电对流瑞利数的表达式。

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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来源期刊

International Journal of Heat and Fluid Flow 工程技术-工程：机械

CiteScore

5.00

自引率

7.70%

发文量

131

审稿时长

33 days

期刊介绍： The International Journal of Heat and Fluid Flow welcomes high-quality original contributions on experimental, computational, and physical aspects of convective heat transfer and fluid dynamics relevant to engineering or the environment, including multiphase and microscale flows. Papers reporting the application of these disciplines to design and development, with emphasis on new technological fields, are also welcomed. Some of these new fields include microscale electronic and mechanical systems; medical and biological systems; and thermal and flow control in both the internal and external environment.