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Structuring under flow of suspensions in a gel
Author(s) -
Jossic Laurent,
Magnin Albert
Publication year - 2004
Publication title -
aiche journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.958
H-Index - 167
eISSN - 1547-5905
pISSN - 0001-1541
DOI - 10.1002/aic.10219
Subject(s) - suspension (topology) , structuring , laminar flow , spheres , inertia , flow (mathematics) , mechanics , materials science , chemical engineering , physics , classical mechanics , engineering , mathematics , finance , astronomy , homotopy , pure mathematics , economics
Laminar flow of a suspension of spheres in a gelled fluid through a sudden expansion causes the suspended matter to become organized. Segregation and migration phenomena of mono and bi‐disperse suspensions have been highlighted. If different sizes of spheres and bimodal suspensions are used, this phenomenon can be used to form structured materials. Flow conditions are such that gravity effects and inertia are negligible. At rest, the spheres are stable in the gel. Nuclear magnetic resonance imaging was used to reveal the distribution of matter within the suspension downstream of the expansion. The interest of such structures for industrial applications is discussed. © 2004 American Institute of Chemical Engineers AIChE J, 50: 2691–2696, 2004