Droplet-based microfluidics has emerged as an efficient platform in a number of lab-on-chip devices for chemical or biomedical analysis. In most of such applications, a non-Newtonian complex liquid constitutes the continuous phase. In the present study, a two-phase gas-non-Newtonian liquid flow has been studied in a horizontal rectangular microchannel with a built-in T-junction. Aqueous solutions of carboxy-methyl cellulose (CMC) of different mass concentrations (0.4%-4%) have been taken as the liquid phase which behaves like a shear-thinning (non-Newtonian) liquid. The air has been used as the gaseous phase. Effects of non-Newtonian continuous phase on the shape, size, and hydrodynamics of the Taylor bubbles inside a microchannel were investigated to understand the influence of viscous stress and surface tension force under various flow conditions. Effects of contact angle (nature of confining walls), gas-liquid superficial velocity ratio, channel dimension etc. were studied at different Capillary numbers (Ca) and viscosity ratios. The rheological properties of CMC solutions are found to affect the formation characteristics and dynamics of the Taylor bubbles significantly. The present work covers a wide range of viscosity ratios and shows the effect of concentration variation of CMC of the non-Newtonian liquid on the bubble dynamics inside the microchannel.
{"title":"Dynamics of Taylor bubbles in non-Newtonian shear thinning continuous phase","authors":"Shilpi Chatterjee, Abhiram Hens, Kartik Chandra Ghanta, Gautam Biswas","doi":"10.1504/pcfd.2023.134201","DOIUrl":"https://doi.org/10.1504/pcfd.2023.134201","url":null,"abstract":"Droplet-based microfluidics has emerged as an efficient platform in a number of lab-on-chip devices for chemical or biomedical analysis. In most of such applications, a non-Newtonian complex liquid constitutes the continuous phase. In the present study, a two-phase gas-non-Newtonian liquid flow has been studied in a horizontal rectangular microchannel with a built-in T-junction. Aqueous solutions of carboxy-methyl cellulose (CMC) of different mass concentrations (0.4%-4%) have been taken as the liquid phase which behaves like a shear-thinning (non-Newtonian) liquid. The air has been used as the gaseous phase. Effects of non-Newtonian continuous phase on the shape, size, and hydrodynamics of the Taylor bubbles inside a microchannel were investigated to understand the influence of viscous stress and surface tension force under various flow conditions. Effects of contact angle (nature of confining walls), gas-liquid superficial velocity ratio, channel dimension etc. were studied at different Capillary numbers (Ca) and viscosity ratios. The rheological properties of CMC solutions are found to affect the formation characteristics and dynamics of the Taylor bubbles significantly. The present work covers a wide range of viscosity ratios and shows the effect of concentration variation of CMC of the non-Newtonian liquid on the bubble dynamics inside the microchannel.","PeriodicalId":54552,"journal":{"name":"Progress in Computational Fluid Dynamics","volume":"128 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136307370","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-01DOI: 10.1504/pcfd.2023.134191
Satyajit Das Karmakar, Syed Mujibur Rahman, Himadri Chattopadhyay
{"title":"Numerical investigations on the performance of Darrieus vertical axis wind turbine with NACA0017 blade profile","authors":"Satyajit Das Karmakar, Syed Mujibur Rahman, Himadri Chattopadhyay","doi":"10.1504/pcfd.2023.134191","DOIUrl":"https://doi.org/10.1504/pcfd.2023.134191","url":null,"abstract":"","PeriodicalId":54552,"journal":{"name":"Progress in Computational Fluid Dynamics","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136307580","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-01-01DOI: 10.1504/pcfd.2022.10048280
Hadi Siyahi, A. Baytaş
{"title":"An adaptive approach for modeling ice accretion on aircraft","authors":"Hadi Siyahi, A. Baytaş","doi":"10.1504/pcfd.2022.10048280","DOIUrl":"https://doi.org/10.1504/pcfd.2022.10048280","url":null,"abstract":"","PeriodicalId":54552,"journal":{"name":"Progress in Computational Fluid Dynamics","volume":"1 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66711113","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-01-01DOI: 10.1504/pcfd.2022.123181
X. Nguyen, D. Saury, D. Lemonnier
{"title":"Coupled natural convection and radiation in a cubic cavity filled with an air - H2O mixture in the presence of a heated obstacle","authors":"X. Nguyen, D. Saury, D. Lemonnier","doi":"10.1504/pcfd.2022.123181","DOIUrl":"https://doi.org/10.1504/pcfd.2022.123181","url":null,"abstract":"","PeriodicalId":54552,"journal":{"name":"Progress in Computational Fluid Dynamics","volume":"1 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66711577","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-01-01DOI: 10.1504/pcfd.2022.10050513
Ramin Fadaei Roodi, M. Pasandidehfard
{"title":"Analysis of three-dimensional cavitating flow over different cavitators using boundary element method","authors":"Ramin Fadaei Roodi, M. Pasandidehfard","doi":"10.1504/pcfd.2022.10050513","DOIUrl":"https://doi.org/10.1504/pcfd.2022.10050513","url":null,"abstract":"","PeriodicalId":54552,"journal":{"name":"Progress in Computational Fluid Dynamics","volume":"1 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66711215","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-01-01DOI: 10.1504/pcfd.2022.10050511
D. R. Kaushal, Manoj Kumar Gopaliya
{"title":"Numerical prediction of solid-liquid slurry flows and derivation of simulation-based correlations for local solid concentration","authors":"D. R. Kaushal, Manoj Kumar Gopaliya","doi":"10.1504/pcfd.2022.10050511","DOIUrl":"https://doi.org/10.1504/pcfd.2022.10050511","url":null,"abstract":"","PeriodicalId":54552,"journal":{"name":"Progress in Computational Fluid Dynamics","volume":"104 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66711072","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-01-01DOI: 10.1504/pcfd.2022.10048869
S. Tiwari, T. Sundararajan, R. R. Shenoi, N. P. Manelil
{"title":"Wake interaction studies of flow past tandem circular cylinders for different diameter and gap ratios","authors":"S. Tiwari, T. Sundararajan, R. R. Shenoi, N. P. Manelil","doi":"10.1504/pcfd.2022.10048869","DOIUrl":"https://doi.org/10.1504/pcfd.2022.10048869","url":null,"abstract":"","PeriodicalId":54552,"journal":{"name":"Progress in Computational Fluid Dynamics","volume":"142 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66711132","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-01-01DOI: 10.1504/pcfd.2022.10046001
Yiqiang Jiang, W. Cai, Ying Fan, Zhiyong Wu
{"title":"Numerical investigation on shear flow and boiling heat transfer on shell-side of LNG spiral wound heat exchanger","authors":"Yiqiang Jiang, W. Cai, Ying Fan, Zhiyong Wu","doi":"10.1504/pcfd.2022.10046001","DOIUrl":"https://doi.org/10.1504/pcfd.2022.10046001","url":null,"abstract":"","PeriodicalId":54552,"journal":{"name":"Progress in Computational Fluid Dynamics","volume":"1 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66710571","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-01-01DOI: 10.1504/pcfd.2022.10047990
A. Zohary, W. Asrar, M. Aldheeb
{"title":"A successful microblowing strategy for airfoils","authors":"A. Zohary, W. Asrar, M. Aldheeb","doi":"10.1504/pcfd.2022.10047990","DOIUrl":"https://doi.org/10.1504/pcfd.2022.10047990","url":null,"abstract":"","PeriodicalId":54552,"journal":{"name":"Progress in Computational Fluid Dynamics","volume":"1 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66710706","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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