2015
DOI: 10.1016/j.compfluid.2014.11.032
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Improving the efficiency of ‘Clean-In-Place’ procedures using a four-lobed swirl pipe: A numerical investigation

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Cited by 23 publications
(9 citation statements)
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“…shear stress and fluctuation intensity, affect cleaning results (Jensen et al, 2006;Jensen and Friis, 2005;Schöler et al, 2012) and to improve the hygienic design of valves, pipes and connections (Friis and Jensen, 2002;Jensen and Friis, 2004). Li et al (2015aLi et al ( , 2015b) simulated a four-lobed swirl pipe by using CFD and identified the potential to improve the efficiency of CIP by…”
Section: A N U S C R I P Tmentioning
confidence: 99%
“…shear stress and fluctuation intensity, affect cleaning results (Jensen et al, 2006;Jensen and Friis, 2005;Schöler et al, 2012) and to improve the hygienic design of valves, pipes and connections (Friis and Jensen, 2002;Jensen and Friis, 2004). Li et al (2015aLi et al ( , 2015b) simulated a four-lobed swirl pipe by using CFD and identified the potential to improve the efficiency of CIP by…”
Section: A N U S C R I P Tmentioning
confidence: 99%
“…They found that the decay rate is not only a function of Reynolds number but also is related to the type of swirl generation. The relationship between the decay rate and friction factor coefficient obtained by Li et al (2015) was slightly higher than that of Steenbergen; they pointed out that the difference between the results may be due to the different types of swirl generators they used. The swirl flow induction method used in Steenbergen's experiment produced more tangential shear force on the wall compared to Li's experimental rotating wall and four-lobed tube.…”
Section: Effects Of Different Lobed Numbers Pitch Length Ratios On Dmentioning
confidence: 79%
“…We found that the decay rate varies linearly with the friction factor coefficient based on our analysis of exiting numerical data. The decay rate correlation formula obtained by fitting is β = 1.76 f, β = 1.72 f, β = 1.71 f, and β = 1.70 f for the Reynolds numbers Re = 50,000, 75,000, 100,000, and 125,000, (Cavazzuti & Corticelli, 2017;Li et al, 2015;Reader-Harris, 1994;Steenbergen & Voskamp, 1998).…”
Section: Effects Of Different Lobed Numbers Pitch Length Ratios On Dmentioning
confidence: 97%
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“…Thus, some authors have discarded standard wall functions for modeling swirl flows of small-scale experiments. Najafi et al used scalable wall functions, because of the robustness in turbulent components, and Li used nonequilibrium wall functions, because of the pressure gradients generated by the swirl pattern near the wall. Attending to these considerations, the following set of recommendations are defined: Scalable and standard wall functions are not recommended under strong pressure gradients. The pressure gradients may be significant at large swirl intensities, providing inconsistent results.…”
Section: Computational Fluid Dynamics (Cfd) Modelingmentioning
confidence: 99%