Volume-independent contact angle prediction

IF 1.1 4区工程技术 Q4 Engineering

High Temperatures-high Pressures Pub Date : 2021-01-01 DOI:10.32908/hthp.v50.1021

N. Çobanoğlu, Alper Genc, S. Korkut, Z. H. Karadeniz, M. Buschmann

引用次数: 1

Abstract

The contact angle of droplets attracts attention as one of the relevant thermophysical properties describing the wettability behaviour of the fluids. The contact angle depends on the surface characteristics such as surface type and roughness as well as on the liquid type and surrounding atmosphere. This study aims to correct the error in the coefficient of the theoretical model developed for droplet shape prediction by Vafaei and Podowski [1]. The corrected model is also rearranged by non-dimensional numbers. The contact angle and the shape of water droplets for different volumes and surface types are predicted by the rearranged model and validated by experimental results. Contact angles have been over-estimated compared to experimental results because of measurement errors in geometrical parameters. It is found that the contact angle model is too sensitive to geometrical parameters. Moreover, the contact angle is found to be independent of the volume.

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与体积无关的接触角预测

液滴的接触角作为描述流体润湿性的相关热物理性质之一引起了人们的关注。接触角取决于表面特性，如表面类型和粗糙度，以及液体类型和周围的大气。本研究旨在修正由Vafaei和Podowski等人建立的液滴形状预测理论模型的系数误差。修正后的模型也被无因次数重新排列。利用重新排列的模型预测了不同体积和表面类型下的接触角和水滴形状，并通过实验结果进行了验证。由于几何参数的测量误差，与实验结果相比，接触角的估计过高。研究发现，接触角模型对几何参数过于敏感。此外，发现接触角与体积无关。

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

High Temperatures-high Pressures THERMODYNAMICS-MECHANICS

CiteScore

1.00

自引率

9.10%

发文量

期刊介绍： High Temperatures – High Pressures (HTHP) is an international journal publishing original peer-reviewed papers devoted to experimental and theoretical studies on thermophysical properties of matter, as well as experimental and modelling solutions for applications where control of thermophysical properties is critical, e.g. additive manufacturing. These studies deal with thermodynamic, thermal, and mechanical behaviour of materials, including transport and radiative properties. The journal provides a platform for disseminating knowledge of thermophysical properties, their measurement, their applications, equipment and techniques. HTHP covers the thermophysical properties of gases, liquids, and solids at all temperatures and under all physical conditions, with special emphasis on matter and applications under extreme conditions, e.g. high temperatures and high pressures. Additionally, HTHP publishes authoritative reviews of advances in thermophysics research, critical compilations of existing data, new technology, and industrial applications, plus book reviews.