{"title":"Experimental and Numerical Study of Heat Transfer and Pressure Drop Non-Newtonian Nanofluid in Corrugated Tube with Twisted Tapes","authors":"Kourosh Javaherdeh, Habib Karimi, Hossein Ghalyanchi Langeroudi","doi":"10.1134/s0036024424701231","DOIUrl":null,"url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>In present research, an experimental and numerical study investigated for heat transfer of non-Newtonian nanofluid flows in corrugated tubes under constant heat flux which are equipped with twisted tapes. The experimental results are based on different Reynolds number from 2400 up to 6800 and with various volume concentrations of silicon dioxide <span>\\(({\\text{Si}}{{{\\text{O}}}_{2}})\\)</span> nanoparticles and different twisted ratios. Present numerical simulation is carried out by utilizing computation fluid dynamic (CFD) code and for validation of obtained results, they are compared to various turbulence modeling and empirical correlations presented by other researchers. Results of experiments showed that amount of power law index of non-Newtonian nanofluids increased while the consistency index generally decreased by intensifying volume concentrations of nanoparticles. Moreover, the numerical results showed standard κ–ε model of turbulence is more proper model rather than other available models.</p>","PeriodicalId":767,"journal":{"name":"Russian Journal of Physical Chemistry A","volume":null,"pages":null},"PeriodicalIF":0.7000,"publicationDate":"2024-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Russian Journal of Physical Chemistry A","FirstCategoryId":"92","ListUrlMain":"https://doi.org/10.1134/s0036024424701231","RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
引用次数: 0
Abstract
In present research, an experimental and numerical study investigated for heat transfer of non-Newtonian nanofluid flows in corrugated tubes under constant heat flux which are equipped with twisted tapes. The experimental results are based on different Reynolds number from 2400 up to 6800 and with various volume concentrations of silicon dioxide \(({\text{Si}}{{{\text{O}}}_{2}})\) nanoparticles and different twisted ratios. Present numerical simulation is carried out by utilizing computation fluid dynamic (CFD) code and for validation of obtained results, they are compared to various turbulence modeling and empirical correlations presented by other researchers. Results of experiments showed that amount of power law index of non-Newtonian nanofluids increased while the consistency index generally decreased by intensifying volume concentrations of nanoparticles. Moreover, the numerical results showed standard κ–ε model of turbulence is more proper model rather than other available models.
Abstract In this research, an experimental and numerical study investigated for heat transfer of non-Newtonian nanofluid flows in corrugated tubes under constant heat flux which are equipped with twisted tapes.实验结果基于从 2400 到 6800 的不同雷诺数，以及不同体积浓度的二氧化硅纳米颗粒和不同的扭曲比例。目前的数值模拟是利用计算流体动力学（CFD）代码进行的，为了验证获得的结果，将其与其他研究人员提出的各种湍流模型和经验相关性进行了比较。实验结果表明，随着纳米粒子体积浓度的增加，非牛顿纳米流体的幂律指数增加，而稠度指数普遍降低。此外，数值结果表明，标准 κ-ε 湍流模型比其他现有模型更合适。
期刊介绍：
Russian Journal of Physical Chemistry A. Focus on Chemistry (Zhurnal Fizicheskoi Khimii), founded in 1930, offers a comprehensive review of theoretical and experimental research from the Russian Academy of Sciences, leading research and academic centers from Russia and from all over the world.
Articles are devoted to chemical thermodynamics and thermochemistry, biophysical chemistry, photochemistry and magnetochemistry, materials structure, quantum chemistry, physical chemistry of nanomaterials and solutions, surface phenomena and adsorption, and methods and techniques of physicochemical studies.
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