Friction factor for water flow through packed beds of spherical and non-spherical particles
| Autor: | Zeljko Grbavcic, Nevenka Bošković-Vragolović, Mihal Djuris, Tatjana Kaludjerovic-Radoicic, Radmila Garic-Grulovic |
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| Rok vydání: | 2017 |
| Předmět: |
Materials science
Water flow General Chemical Engineering Mineralogy 02 engineering and technology non-spherical particles law.invention spherical particles symbols.namesake 020401 chemical engineering law 0204 chemical engineering lcsh:Chemical engineering Quartz lcsh:HD9650-9663 Filtration pressure drop Pressure drop Packed bed Range (particle radiation) packed bed Reynolds number lcsh:TP155-156 Mechanics 021001 nanoscience & nanotechnology quartz filtration sand symbols Particle 0210 nano-technology lcsh:Chemical industries |
| Zdroj: | Chemical Industry & Chemical Engineering Quarterly Chemical Industry and Chemical Engineering Quarterly, Vol 23, Iss 1, Pp 57-66 (2017) Chemical Industry and Chemical Engineering Quarterly / CICEQ |
| Popis: | The aim of this work was the experimental evaluation of different friction factor correlations for water flow through packed beds of spherical and non-spherical particles at ambient temperature. The experiments were performed by measuring the pressure drop across the bed. Packed beds made of monosized glass spherical particles of seven different diameters were used, as well as beds made of 16 fractions of quartz filtration sand obtained by sieving (polydisperse non-spherical particles). The range of bed voidages was 0.359 - 0.486, while the range of bed particle Reynolds numbers was from 0.3 to 286 for spherical particles and from 0.1 to 50 for non-spherical particles. The obtained results were compared using a number of available literature correlations. In order to improve the correlation results for spherical particles, a new simple equation was proposed in the form of Ergun`s equation, with modified coefficients. The new correlation had mean absolute deviation between experimental and calculated values of pressure drop of 9.04%. For non-spherical quartz filtration sand particles the best fit was obtained using Ergun`s equation, with mean absolute deviation of 10.36%. Surface-volume diameter (dSV) necessary for correlating the data for filtration sand particles was calculated based on correlations for dV=f(dm) and y=f(dm) from our previous paper [27]. [Projekat Ministarstva nauke Republike Srbije, br. ON172022] |
| Databáze: | OpenAIRE |
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