کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6466778 1423246 2017 11 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Flow visualisation and modelling of solid soap extrusion
ترجمه فارسی عنوان
تجسم جریان و مدل سازی اکستروژن صابون جامد
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
چکیده انگلیسی


- Solid soap ram extrusion was studied using three sets of tools of different size.
- Data were analysed using two standard models: fitting suggested good agreement.
- Flow visualisation of the extrusion revealed an unexpected velocity field.
- Fluid simulations with wall slip did not match the real or model velocity profiles.

Ram extrusion of a solid granular soap was studied using three geometrically identical but differently-scaled extruders. The experimental design revealed deviation from the Benbow and Bridgwater (1993) extrusion model due to non-ideal, scale-dependent effects. Typically these effects, linked to the shear rate in the extruder, are absorbed into the model's material pseudo-properties. The data were able to be represented using the Basterfield et al. (2005) model for extrusion flow which does include a shear rate as a variable.Flow visualisation in conjunction with fluid dynamics-based simulations showed, however, that the assumptions underlying the Basterfield et al. model are not appropriate for soap extrusion, despite the good agreement of the model with the experimental extrusion data. This highlights a need for care in interpretation of extrusion data, in that the limited information gathered about any given experiment, typically just the extrusion pressure, can lead to the generation of spurious parameters if the wrong model is applied.

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ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chemical Engineering Science - Volume 173, 14 December 2017, Pages 110-120
نویسندگان
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