Modeling pressure drop in curvature and reacceleration zones in bends during pneumatic conveying of fine powders

This paper presents the results of ongoing research aimed at modeling the pressure drop in bends during pneumatic conveying of fine powders. Based on the test results of conveying fly ash and two grades of cement through three different radii of curvature of the bends, two different bend diameters,...

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Bibliographic Details
Published inParticulate science and technology Vol. 42; no. 3; pp. 377 - 392
Main Authors Sharma, Atul, Poddar, Rachit, Saluja, Gourav, Mallick, S. S.
Format Journal Article
LanguageEnglish
Published Philadelphia Taylor & Francis 02.04.2024
Taylor & Francis Ltd
Subjects
Bends
Conveying
fine powders
Fly ash
Modelling
Pneumatic conveying
Pneumatic conveyors
Pressure drop
Radius of curvature
reacceleration zone
solids friction
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Summary:This paper presents the results of ongoing research aimed at modeling the pressure drop in bends during pneumatic conveying of fine powders. Based on the test results of conveying fly ash and two grades of cement through three different radii of curvature of the bends, two different bend diameters, and two different locations of the test bend, a semi-empirical relationship was developed for bend loss with various pressure drop components modeled separately. The newly developed model was used to predict the bend loss for a solid loading ratio in the range of 51-170 (very dense phase). The proposed model exhibited a satisfactory level of prediction accuracy, with relative error percentages of less than 12.2% and 19.6% for the high and low solids loading ratios, respectively.
ISSN:0272-6351
1548-0046
DOI:10.1080/02726351.2023.2255865