Effect of upstream conditions on the two phase flow in the large diameter vertical pipe

Conference paper


Ali, S. and Yeung, H. (2008). Effect of upstream conditions on the two phase flow in the large diameter vertical pipe. 6th North American BHRG Conference on Multiphase Technology. Banff, Canada 04 - 06 Jun 2008 BHR Group.
AuthorsAli, S. and Yeung, H.
TypeConference paper
Abstract

Two phase flow in large diameter vertical pipes is of considerable importance to various fields of multiphase flows. Recently, due to increase in demand in various energy sectors considerable attention has been paid in understanding the flow behavior in large diameter vertical pipes.

This paper reports the experimental results of flow pattern identification in relatively large diameter (254mm) vertical pipe. The present work also investigates the effect of upstream conditions on the flow patterns occurring in the vertical test section. The observed flow patterns are classified as bubbly, agitated bubbly, unstable slug and churn/froth flow. Absence of hydrodynamic slugging i.e. non occurrence of Taylor bubble in the riser is also reported. It is found that agitated bubbly and churn/froth type of flows dominates in the vertical large diameter pipe under the condition where conventional small diameter pipe indicates slug flow. Experimental results demonstrate the sensitivity of the flow patterns occurring in the vertical section with the upstream conditions in the flowline. The statistical analysis performed on the data along with visual observations, suggests that liquid slugs formed in flowline dissipate as they travelled up the riser, due to the high velocity distorted bubble clusters.

KeywordsAir–water; Flow patterns; Flow regime transitions; Large diameter; Small diameter; Vertical pipe; Void fraction
Year2008
JournalBHRG Conference on Multiphase Technology proceedings
PublisherBHR Group
Web address (URL)https://www.proceedings.com/bhr-group/?MtgYr=2008&filterPage=1&&page=2
Accepted author manuscript
License
File Access Level
Open
Publication dates
Print04 Jun 2008
Publication process dates
Deposited18 Mar 2022
Additional information

6th North American Conference on Multiphase Technology, Banff, Canada: 4-6 June 2008.

Permalink -

https://openresearch.lsbu.ac.uk/item/8xq0y

Download files


Accepted author manuscript
  • 11
    total views
  • 13
    total downloads
  • 1
    views this month
  • 0
    downloads this month

Export as

Related outputs

A review on the potential use of flammable gases from sewage systems as a source of energy
Ghaffari, M., Paurine, A., Ali, S. and Mavroulidou, M. A review on the potential use of flammable gases from sewage systems as a source of energy . 17th International Conference on Environmental Science and Technology CEST2021. Athens, Greece 01 - 04 Sep 2021 Springer.
Opportunities to decarbonize heat in the UK using Urban Wastewater Heat Recovery
Ali, S. and Gillich, A. (2021). Opportunities to decarbonize heat in the UK using Urban Wastewater Heat Recovery. Building Services Engineering Research and Technology. https://doi.org/10.1177/01436244211034739
Remedial Adaptations in Building Services to Reduce COVID-19 Transmission
Ali, S. and Waters, J. (2021). Remedial Adaptations in Building Services to Reduce COVID-19 Transmission. Virtual CIBSE Technical Symposium 2021, 13 - 14 July 2021 CIBSE.. Virtual 13 - 14 Jul 2021 CIBSE.
The potential for heat recovery from urban wastewater.
Ali, S. and Gillich, A. (2020). The potential for heat recovery from urban wastewater. CIBSE ASHRAE Technical Symposium 2020. On line 14 - 14 Sep 2020 CIBSE.
Determining the UK’s potential for heat recovery from wastewater using steady state and dynamic modelling - preliminary results
Ali, S. and Gillich, A. (2018). Determining the UK’s potential for heat recovery from wastewater using steady state and dynamic modelling - preliminary results. 2nd Global Conference on Energy and Sustainable Development, GCESD2018. Edinburgh 18 - 20 Dec 2018 WEENTECH. https://doi.org/10.32438/WPE.58181
The Theoretical versus Practical Potential of Existing and Emerging Wastewater Heat Recovery Technologies
Ali, S. and Gillich, A. (2018). The Theoretical versus Practical Potential of Existing and Emerging Wastewater Heat Recovery Technologies. Energy Systems Conference 201. London, UK 19 - 20 Jun 2018
Greenhouse effect reduction by recovering energy from waste landfills in Pakistan
Zuberi, MJS and Ali, SF (2015). Greenhouse effect reduction by recovering energy from waste landfills in Pakistan. Renewable and Sustainable Energy Reviews. 44, pp. 117-131. https://doi.org/10.1016/j.rser.2014.12.028
Experimental Study of Two-Phase Air–Water Flow in Large-Diameter Vertical Pipes
Ali, S. and Yeung, H. (2014). Experimental Study of Two-Phase Air–Water Flow in Large-Diameter Vertical Pipes. Chemical Engineering Communications. 202 (6), pp. 823-842. https://doi.org/10.1080/00986445.2013.879058
Two Phase Flow Patterns in Large Diameter Vertical Pipes
Ali, S. and Yeung, H. (2013). Two Phase Flow Patterns in Large Diameter Vertical Pipes. Asia Pacific Journal of Chemical Engineering. 9 (1), pp. 105-116. https://doi.org/10.1002/apj.1750
Performance Assessment of Void Fraction Correlations in Large Diameter Vertical Pipe Up Flow
Ali, S. and Yeung, H. (2008). Performance Assessment of Void Fraction Correlations in Large Diameter Vertical Pipe Up Flow. 11th International Conference on Multiphase Flow in Industrial Plant. Palermo, Italy 07 - 10 Sep 2008 MFIP.
Hydrodynamic Flow Behaviour in Large Diameter Vertical Riser: Experimental and Simulation Studies
Ali, S. and Yeung, H. (2008). Hydrodynamic Flow Behaviour in Large Diameter Vertical Riser: Experimental and Simulation Studies. 11th International Conference on Multiphase Flow in Industrial Plant. Palermo, Italy 07 - 10 Sep 2008 MFIP.