Experimental investigation of head resistance reduction in bubbly Couette–Taylor flow

Maryami, R.; Javadpoor, M.; Farahat, Said

doi:10.1007/s00231-015-1739-4

Cited by 5 publications

(2 citation statements)

References 52 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Bubbly CT flow has been experimentally and numerically studied in recent years (Murai et al, 2005;Murai et al, 2008;Mehel et al, 2007;Van der Berg et al, 2005;Van der Berg et al, 2007;Van Gils et al, 2013;Maryami et al, 2014;, Maryami et al, 2016Sugiyam et al, 2008). The influence of solid particles and microbubbles on the viscous drag reduction in the turbulence CT flow has been experimentally and numerically studied by Van der Berg et al (2005.…”

Section: Introductionmentioning

confidence: 99%

Numerical study of frictional drag reduction using micro-bubbles in a vertical Couette-Taylor system

Javadpour

Maryami

Kadivar

2022

ijpse

View full text Add to dashboard Cite

In this work, we numerically study the reduction of frictional drag in a vertical Couette-Taylor system by using micro-bubbles. The silicon flow is in the annular gap between two concentric cylinders as the internal cylinder is rotating while the outer cylinder is stationary. Taylor vortices are formed between the cylinders and the rotational Reynolds number also varies from 700 to 4500. The carrier flow is silicone while air bubbles are constantly injected into the carrier phase at the bottom of cylinders and rise through the flow. By employing a discrete phase model and Euler-Lagrange approach, we investigate a two-phase turbulent flow. In this way, we study the distribution of the bubbles through the flow, which is acquired using numerical modeling. Our numerical results are in good agreement with the experimentally reported data for different values of Reynolds numbers. We also investigate the effect of injected air with a constant flow rate on the skin friction drag and on the drag coefficient ratio. Our numerical results illustrate a reduction of drag about 36% when microbubbles are injected into the system. This reduction can be achieved by the effect of the bubbles on the density of the fluid and transformed momentum.

show abstract

Section: Introductionmentioning

confidence: 99%

Numerical study of frictional drag reduction using micro-bubbles in a vertical Couette-Taylor system

Javadpour

Maryami

Kadivar

2022

ijpse

View full text Add to dashboard Cite

show abstract

“…For small Reynolds numbers, a decrease in the viscous torque was found, while for larger Reynolds numbers an increase was evidenced, with the transition between these two trends depending on the bubble size. Moreover, Maryami et al [68] also conducted experiments in a Taylor-Couette setup, but in this case a circulated vertical flow was also added (axial flow) by injecting water at the bottom from a pump (see Table 6 for details of dimensions). The rotating internal cylinder was painted in matt black and the outer concentric hollow cylinder was made of transparent acrylic.…”

mentioning

confidence: 99%

Micro/Bubble Drag Reduction Focused on New Applications

García-Magariño

Lopez-Gavilan

Sor

et al. 2023

JMSE

View full text Add to dashboard Cite

Bubble drag reduction has been shown to be a promising technique for reducing the drag in ships, thus reducing the emission of pollutants and allowing the compliance with the new requirements imposed recently in this respect. Different searches have been conducted in the publications related to this technique, and an increase in interest has been shown, especially in the last decade. In this context, a review of the experimental work related to bubble drag reduction published in the last decade is presented in the present article. The works were classified according to the facility used (towing tank, cavitation tunnel, water channel, Taylor–Couette…), and the main finding are presented. It was found that two new trends in research have arisen, while there are still contradictions in the fundamental basis, which needs further study.

show abstract

Taylor-Couette flow and transient heat transfer inside the annulus air-gap of rotating electrical machines

2017

View full text Add to dashboard Cite

Experimental investigation of head resistance reduction in bubbly Couette–Taylor flow

Cited by 5 publications

References 52 publications

Numerical study of frictional drag reduction using micro-bubbles in a vertical Couette-Taylor system

Numerical study of frictional drag reduction using micro-bubbles in a vertical Couette-Taylor system

Micro/Bubble Drag Reduction Focused on New Applications

Taylor-Couette flow and transient heat transfer inside the annulus air-gap of rotating electrical machines

Contact Info

Product

Resources

About