粘弹性羧甲基纤维素溶液的射流破碎动力学

IF 3.6 2区工程技术 Q1 MECHANICS

International Journal of Multiphase Flow Pub Date : 2025-07-21 DOI:10.1016/j.ijmultiphaseflow.2025.105349

Ketan Vinayak Warghat , Yogesh Biswal , Sukesh Sharma , Pankaj Sharadchandra Kolhe , Lakshmana Dora Chandrala , Kirti Chandra Sahu

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引用次数: 0

摘要

实验研究了由羧甲基纤维素（CMC）溶液组成的粘弹性射流的破裂动力学，重点研究了低流速下的滴流和瑞利流。通过改变CMC浓度、针头直径（Dn）和流速(Q)，我们分析了弹性、粘度和流动条件对射流稳定性和液滴形成的影响。研究结果表明，CMC浓度的增加增强了粘弹性效应，延长了射流寿命，延长了液体螺纹，并改善了夹断行为。在较高的浓度下，弹性抑制毛细血管驱动的不稳定性，减缓变薄并促进珠状结构的形成。我们观察到惯性力、毛细力和弹性力之间的相互作用，以及CMC浓度的影响，决定了射流长度、液滴体积和破裂时间，其中针尖直径和流速对射流破裂现象起着至关重要的作用。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Jet breakup dynamics of viscoelastic carboxymethyl cellulose solutions

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Jet breakup dynamics of viscoelastic carboxymethyl cellulose solutions

We experimentally investigate the breakup dynamics of viscoelastic jets composed of carboxymethyl cellulose (CMC) solutions, focusing on the dripping and Rayleigh regimes at low flow rates. By varying the CMC concentration, needle diameter (

D_{n}

), and flow rate (

Q

), we analyze the effects of elasticity, viscosity, and flow conditions on jet stability and droplet formation. Our results show that increasing CMC concentration enhances viscoelastic effects, leading to prolonged jet lifetimes, extended liquid threads, and modified pinch-off behavior. At higher concentrations, elasticity suppresses capillary-driven instabilities, slowing thinning and facilitating the formation of beaded structures. We observe that the interplay between inertial, capillary, and elastic forces, influenced by CMC concentration, governs the jet length, droplet volume, and breakup time, with needle diameter and flow rate playing a crucial role in jet breakup phenomenon.

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来源期刊

International Journal of Multiphase Flow 物理-力学

CiteScore

7.30

自引率

10.50%

发文量

244

审稿时长

4 months

期刊介绍： The International Journal of Multiphase Flow publishes analytical, numerical and experimental articles of lasting interest. The scope of the journal includes all aspects of mass, momentum and energy exchange phenomena among different phases such as occur in disperse flows, gas–liquid and liquid–liquid flows, flows in porous media, boiling, granular flows and others. The journal publishes full papers, brief communications and conference announcements.