کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6664505 | 1427068 | 2018 | 30 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Modifications in the Rushton turbine for mixing viscoplastic fluids
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Modifications in the Rushton turbine for mixing viscoplastic fluids Modifications in the Rushton turbine for mixing viscoplastic fluids](/preview/png/6664505.png)
چکیده انگلیسی
The mixing characteristics of complex non-Newtonian fluids in a cylindrical vessel without baffles are determined in this paper. The working fluid has a shear thinning behavior with yield stress modeled by the Hershel-Bulkley model. Effects of the impeller design are explored; it concerns some modifications in the blade of a Rushton turbine mounted centrally at the half of the tank. Different shapes of cuts have been introduced in the blade of impeller, namely: U-, 2U-, V- and W-cuts. We focus on the determination of flow patterns, cavern size and power consumption for various shapes and Reynolds numbers. The obtained results revealed that the cut introduced in the blade gives a reduction in power consumption accompanied with a reduction in cavern size than that obtained with the plain blade. The best compromise between energy saving and well-mixed region size allows to select the impeller with V- or W-cut blade as the best one from all cases studied.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Food Engineering - Volume 233, September 2018, Pages 117-125
Journal: Journal of Food Engineering - Volume 233, September 2018, Pages 117-125
نویسندگان
Houari Ameur,