Drag coefficient in a crystal suspension
Hassan, N.M.S., Khan, M.M.K., Rasul, M.G., & Rackemann, D.W. (2008) Drag coefficient in a crystal suspension. International Journal of Mechanical and Materials Engineering, 3(2), pp. 198-205.
A single air bubble rising in xanthan gum crystal suspension has been studied experimentally. The suspension was made by different concentrations of xanthan gum solutions with 0.23 mm polystyrene crystal particles. Drag co-efficient data and a new correlation of drag coefficient is presented for spherical and nonspherical bubbles in non-Newtonian crystal suspension. The correlation is developed in terms of the Reynolds number, Re and the bubble shape factor, � (the ratio between the surface equivalent sphere diameter to the volume equivalent sphere diameter). The experimental drag coefficient was found to be consistent with this new predicted correlation and published data over the ranges, 0.1<Re< 200 and 1<�phi<2.5.
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|Item Type:||Journal Article|
|Keywords:||Crystal suspension, bubble rise velocity, drag coefficient, bubble shape factor|
|Subjects:||Australian and New Zealand Standard Research Classification > CHEMICAL SCIENCE (030000) > PHYSICAL CHEMISTRY (INCL. STRUCTURAL) (030600) > Transport Properties and Non-Equilibrium Processes (030607)|
Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > CHEMICAL ENGINEERING (090400) > Rheology (090408)
|Divisions:||Current > Research Centres > Centre for Tropical Crops and Biocommodities|
Past > QUT Faculties & Divisions > Faculty of Science and Technology
|Copyright Owner:||Copyright 2008 [please consult the authors]|
|Deposited On:||05 May 2011 09:00|
|Last Modified:||07 May 2011 06:32|
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