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Estimating the Richardson-Zaki index n for non-spherical irregular natural sediments in a concentrated suspension
Joint Authors
Ismail, Norli
al-Rawi, Rim A.
Umar, A. K. Muhammad
Ahmad, Anis
Source
ZANCO Journal of Pure and Applied Sciences
Publisher
Salahaddin University-Erbil Department of Scientific Publications
Publication Date
2016-06-30
Country of Publication
Iraq
No. of Pages
6
Main Subjects
Earth Sciences, Water and Environment
English Abstract
The hindered settling velocity (uh) of the particles is considered as a part of the terminal (free) settling velocity (ut).
Richardson and Zaki investigated this relation and derived an equation known as R and Z formula ( n h t u = u ε ) for spherical particles.
Currently work is modified the R & Z index n to become suitable for nonspherical irregular natural sediments that settled in concentrated suspension known as palm oil mill effluent (POME).
Aspect ratio (AR) adopted as a shape factor to determine the particle diameter.
The n-indexes modified at different Reynolds number (Re) taking into consideration the wall effect (λ).
The obtained results shows that the index n for non- spherical irregular particles has close values of index n for the spherical particles in comparison to the previous published data.
Data Type
Conference Papers
Record ID
BIM-787281
American Psychological Association (APA)
al-Rawi, Rim A.& Ahmad, Anis& Ismail, Norli& Umar, A. K. Muhammad. 2016-06-30. Estimating the Richardson-Zaki index n for non-spherical irregular natural sediments in a concentrated suspension. International Conference on Engineering and Innovative Technology (1st : 2016 : Erbil, Iraq). . Vol. 28, no. 2 (Supplement) (2016), pp.406-411.Irbil Iraq : Salahaddin University-Erbil Department of Scientific Publications.
https://search.emarefa.net/detail/BIM-787281
Modern Language Association (MLA)
al-Rawi, Rim A.…[et al.]. Estimating the Richardson-Zaki index n for non-spherical irregular natural sediments in a concentrated suspension. . Irbil Iraq : Salahaddin University-Erbil Department of Scientific Publications. 2016-06-30.
https://search.emarefa.net/detail/BIM-787281
American Medical Association (AMA)
al-Rawi, Rim A.& Ahmad, Anis& Ismail, Norli& Umar, A. K. Muhammad. Estimating the Richardson-Zaki index n for non-spherical irregular natural sediments in a concentrated suspension. . International Conference on Engineering and Innovative Technology (1st : 2016 : Erbil, Iraq).
https://search.emarefa.net/detail/BIM-787281