Current issue
Archive
About the Journal
About
Editorial Board
Abstract & Indexing
Contact
Editorial Policies
Authorship & COI
Ethical principles
Principles of Transparent Checklist
Open access
For Authors
Instructions to Authors
Detailing Guidelines for Authors
Review process
Review sheet
How to submit
Open Access license
ORIGINAL PAPER
Influence of Viscosity on the Shape of an Air Taylor Bubble in a Stagnant Liquid Under Turbulent Condition in Falling Film
1
Advanced Computational Fluid Dynamics Research Unit, Department of Mechanical Engineering Faculty of Engineering, Chulalongkorn University Bangkok, 10330, Thailand
Online publication date: 2019-03-12
Publication date: 2019-03-01
International Journal of Applied Mechanics and Engineering 2019;24(1):67-77
KEYWORDS
ABSTRACT
This work aims to find the influence of the liquid viscosity on the shape of an air Taylor bubble, rising up in a pipe column which contains the liquid under conditions that the liquid is stagnant and the Froude number is approximately equal to 0.35. Five liquid viscosities (from 0.001 to 0.01 Pa · s) were selected for being computationally investigated. An appropriate shape of a Taylor bubble, corresponding to each selected viscosity, was obtained by considering a pressure distribution of the air inside the bubble. Simulation results showed that the Taylor bubble shape would be thicker if the liquid viscosity was decreased. This could be explained by using the theory of the log-law velocity profile.
REFERENCES (24)
1.
Nogueira S., Riethmuler M.L., Campos J.B.L.M. and Pinto A.M.F.R. (2006): Flow in the nose region and annual film around a Taylor bubble rising through vertical columns of stagnant and flowing Newtonian liquids. – Chemical Engineering Science, vol.61, pp.845-857.
2.
Dumitrescu D.T. (1943): Strömung an Einer Luftblase im Senkrechten Rohr. – Zeitschrift fur An-gewandte Mathematik und Mechanik, vol.23, pp.139-149.
3.
Bugg J.D., Mack K. and Rezkallah K.S. (1998): A numerical model of Taylor bubbles rising through stagnant liquids in vertical tubes. – International Journal of Multiphase Flow, vol.24, No.2, pp.271-281.
4.
Mao Z-S. and Dukler A.E. (1990): The motion of Taylor bubbles in vertical tubes. I. A numerical simulation for the shape and rise velocity of Taylor bubbles in stagnant and flowing liquid. – Journal of Computational Physics, vol.91, No.1, pp.132-160.
5.
Mao Z-S. and Dukler A.E. (1991): The motion of Taylor bubbles in vertical tubes-II. Experimental data and simulations for laminar and turbulent flow. – Chemical Engineering Science, vol.46, No.8, pp.2055-2064.
6.
Smith S., Taha T. and Cui Z. (2002): Enhancing hollow fibre ultrafiltration using slug-flow – a hydrodynamic study. – Desalination, vol.146, pp.69-74.
7.
Taha T. and Cui Z.F. (2004): Hydrodynamics of slug flow inside capillaries. – Chemical Engineering Science, vol.59, pp.1181-1190.
8.
Thulasidas T.C., Abraham M.A. and Cerro R.L. (1997): Flow patterns in liquid slugs during bubble-train flow inside capillaries. – Chemical Engineering Science, vol.52, pp.2947-2962.
9.
Van Baten J.M. and Krishna R. (2004): CFD simulation of mass transfer from Taylor bubbles rising in circular capillaries. – Chemical Engineering Science, vol.59, pp.2535-2545.
10.
Hayashi K., Kurimoto R. and Tomiyama A. (2011): Terminal velocity of a Taylor drop in a vertical pipe. – International Journal of Multiphase Flow, vol.37, pp.241-251.
11.
White E.T. and Beardmore R.H. (1962): The velocity of rise of single cylindrical air bubbles through liquids contained in vertical tubes. – Chemical Engineering Science, vol.17, No. 5, pp.351-361.
12.
Ahmad W.R., DeJesus J.M. and Kawaji M. (1998): Falling film hydrodynamics in slug flow. – Chemical Engineering Science, vol.53, pp.123-130.
13.
Hout R.V., Bernea D. and Shemer L. (2001): Evolution of statistical parameters of gas-liquid slug flow along vertical pipes. – International Journal of Multiphase Flow, vol.27, pp.1579-1602.
14.
Pinto A.M.F.R., Coelho Pinheiro M.N. and Campos J.B.L. (2001): On the interaction of Taylor bubbles rising in two-phase co-current slug flow in vertical columns: turbulent wakes. – Experiments in Fluids, vol.31, pp.643-652.
15.
Kytömaa H.K. and Brennen C.E. (1991): Small amplitude kinematic wave propagation in two-component media. – International Journal of Multiphase Flow, vol.17, No.1, pp.13-26.
16.
Cheng H., Hills J.H. and Azzorpardi B.J. (1998): A study of the bubble-to-slug transition in vertical gas-liquid flow in columns of different diameter. – International Journal of Multiphase Flow, vol.24, No.3, pp.431-452.
17.
Sun B., Wang R., Zhao X. and Yan D. (2002): The mechanism for the formation of slug flow in vertical gas-liquid two-phase flow. – Solid-State Electronics, vol.46, No.12, pp.2323-2329.
18.
Mayor T.S., Pinto A.M.F.R. and Campos J.B.L.M. (2007): Hydrodynamics of gas-liquid slug flow along vertical pipes in the laminar regimes-experimental and simulation study. – Industrial and Engineering Chemistry Research, vol.46, pp.3794-3809.
19.
Ferziger J.H. and Peric M. (2002): Computational Methods for Fluid Dynamics. – Germany: Springer.
20.
Hout R.V., Bernea D. and Shemer L. (2003): Evolution of hydrodynamic and statistical parameters of gas-liquid slug flow along inclined pipes. – Chemical Engineering Science, vol.58, No.1, pp.115-133.
21.
Shemer L. (2003): Hydrodynamic and statistical parameters of slug flow. – International Journal of Heat and Fluid Flow, vol.24, pp.334-344.
22.
Lertnuwat B. (2015): Model for predicting the head shape of a Taylor bubble rising through stagnant liquids in a vertical tube. – Thammasat International Journal of Science and Technology, vol.20, No. 1, pp.37-46.
23.
Lertnuwat B. (2018): Shapes of an air Taylor bubble in stagnant liquids influenced by different surface tensions. – International Journal of Applied Mechanics and Engineering. vol.23, No.1, pp.79-90.
24.
Salakij S. and Lertnuwat B. (2018): Influence of viscosity on the shape of an air Taylor bubble in a stagnant liquid under laminar condition in falling film region. – International Journal of Applied Engineering Research, vol.13, No.1, pp.8-13.
Share
RELATED ARTICLE
| eISSN: | 2353-9003 |
| ISSN: | 1734-4492 |
Task: edition of a scientific journal, its internationalization and ensuring open access to the journal via the Internet
© 2006-2024 Journal hosting platform by Bentus
We process personal data collected when visiting the website. The function of obtaining information about users and their behavior is carried out by voluntarily entered information in forms and saving cookies in end devices. Data, including cookies, are used to provide services, improve the user experience and to analyze the traffic in accordance with the Privacy policy. Data are also collected and processed by Google Analytics tool (more).
You can change cookies settings in your browser. Restricted use of cookies in the browser configuration may affect some functionalities of the website.
You can change cookies settings in your browser. Restricted use of cookies in the browser configuration may affect some functionalities of the website.
