首页 | 本学科首页   官方微博 | 高级检索  
     


Power Requirement for Mixing Shear‐Thinning Fluids with a Planetary Mixer
Authors:Frederic Auger  Christophe André  Laurent Bouvier  Andreas Redl  Marie‐Hélène Morel  Guillaume Delaplace
Affiliation:1. Syral, Aalst, Belgium.;2. CSM Bakery, Bingen, Germany.;3. INRA‐UMR UMET 8207 – Equipe PIHM CNRS‐INRA‐ENSCL‐Univ.Lille1;4. UC Lille, HEI, Lille, France.;5. TEREOS SYRAL SAS, Marckolsheim, France.;6. INRA, UMR 1208 IATE, Montpellier, France.
Abstract:The optimal control of processes dealing with non‐Newtonian liquids requires the knowledge and control of the power demand of the mixing equipment. In this context, an extension of the Metzner and Otto concept to planetary mixers is proposed to adapt this concept to planetary mixers. The theoretical part of this work defines modified expressions of Reynolds and power numbers. These definitions introduce a characteristic velocity uch that is used to define the parameter Ks. A planetary mixer is employed to experimentally ascertain this guideline. Power consumption measurements carried out by mixing shear‐thinning fluids permit to determine the Ks factor. This factor varies only slightly with the flow behavior index and may be regarded as a defined constant for this geometry. Finally, experiments with an additional shear‐thickening fluid confirm the validity of this approach.
Keywords:Dimensional analysis  Mixing  Planetary mixer  Power consumption  Shear‐thinning fluids
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号