A numerical investigation on heat transfer characteristics of a particle cluster in fluid with variable properties

IF 4.1 2区材料科学 Q2 ENGINEERING, CHEMICAL Particuology Pub Date : 2024-09-10 DOI:10.1016/j.partic.2024.08.019

Xiaoyu Li, Huibo Wang, Bowei Zhang, Hui Jin

引用次数: 0

Abstract

This work investigates the heat transfer characteristics of particle clusters under the effects of the complex properties of supercritical water (SCW). It analyzes the heat transfer characteristics of sub-particles and the average heat transfer characteristics of particle clusters. The results reveal a phenomenon of shifting positions of high specific heat regions. It led to variations in the dimensionless heat transfer coefficient distribution. Furthermore, the results indicate that as the heat transfer process strengthens, the effects of variations in property distribution on heat transfer tends to stabilize. Based on this conclusion, the effects of variations in property distribution on heat transfer are categorized into Stable Effects Region and Non-Stable Effects Region. By utilizing the principles of fluid flow-heat transfer coupling and similarity, a heat transfer prediction model for particle clusters in SCW is established.

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关于具有可变性质的流体中颗粒团簇传热特性的数值研究

本研究探讨了超临界水（SCW）复杂特性影响下颗粒团簇的传热特性。它分析了子颗粒的传热特性和颗粒团的平均传热特性。结果发现了高比热区域位置移动的现象。这导致了无量纲传热系数分布的变化。此外，结果表明，随着传热过程的加强，属性分布变化对传热的影响趋于稳定。根据这一结论，属性分布变化对传热的影响分为稳定影响区和非稳定影响区。利用流体流动-传热耦合和相似性原理，建立了 SCW 中颗粒团簇的传热预测模型。

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来源期刊

Particuology 工程技术-材料科学：综合

CiteScore

6.70

自引率

2.90%

发文量

1730

审稿时长

32 days

期刊介绍： The word ‘particuology’ was coined to parallel the discipline for the science and technology of particles. Particuology is an interdisciplinary journal that publishes frontier research articles and critical reviews on the discovery, formulation and engineering of particulate materials, processes and systems. It especially welcomes contributions utilising advanced theoretical, modelling and measurement methods to enable the discovery and creation of new particulate materials, and the manufacturing of functional particulate-based products, such as sensors. Papers are handled by Thematic Editors who oversee contributions from specific subject fields. These fields are classified into: Particle Synthesis and Modification; Particle Characterization and Measurement; Granular Systems and Bulk Solids Technology; Fluidization and Particle-Fluid Systems; Aerosols; and Applications of Particle Technology. Key topics concerning the creation and processing of particulates include: -Modelling and simulation of particle formation, collective behaviour of particles and systems for particle production over a broad spectrum of length scales -Mining of experimental data for particle synthesis and surface properties to facilitate the creation of new materials and processes -Particle design and preparation including controlled response and sensing functionalities in formation, delivery systems and biological systems, etc. -Experimental and computational methods for visualization and analysis of particulate system. These topics are broadly relevant to the production of materials, pharmaceuticals and food, and to the conversion of energy resources to fuels and protection of the environment.