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Shear rate in stirred tank and bubble column bioreactors [An article from: Chemical Engineering Journal]
Book Details
PublisherElsevier
ISBN / ASINB000PAUZS2
ISBN-13978B000PAUZS2
AvailabilityAvailable for download now
MarketplaceUnited States 🇺🇸
Description
This digital document is a journal article from Chemical Engineering Journal, published by Elsevier in 2006. The article is delivered in HTML format and is available in your Amazon.com Media Library immediately after purchase. You can view it with any web browser.
Description:
A rigorous theoretical analysis is used to show that for both Newtonian and non-Newtonian power law fluids agitated in stirred vessels, the average shear rate @c in the fluid is a function of the rotational speed N of the impeller, as follows:@c=constant@?N(laminarflow)@c=constant@?N^3^/^2(turbulentflow).Only in turbulent flow, the proportionality constant in the above equation depends on the flow index and the consistency index of the power law fluid. The above equations derived by theoretical reasoning are in excellent agreement with the long established empirical art. In bubble columns, the average shear rate depends on the superficial gas velocity U"g, as follows:@c=constant@?U"g^1^/^(^n^+^1^)where n is the flow index of the power law fluid. The proportionality constant in the above equation for bubble columns is a function of the flow index, consistency index and the density of the liquid.
Description:
A rigorous theoretical analysis is used to show that for both Newtonian and non-Newtonian power law fluids agitated in stirred vessels, the average shear rate @c in the fluid is a function of the rotational speed N of the impeller, as follows:@c=constant@?N(laminarflow)@c=constant@?N^3^/^2(turbulentflow).Only in turbulent flow, the proportionality constant in the above equation depends on the flow index and the consistency index of the power law fluid. The above equations derived by theoretical reasoning are in excellent agreement with the long established empirical art. In bubble columns, the average shear rate depends on the superficial gas velocity U"g, as follows:@c=constant@?U"g^1^/^(^n^+^1^)where n is the flow index of the power law fluid. The proportionality constant in the above equation for bubble columns is a function of the flow index, consistency index and the density of the liquid.
