کد مقاله کد نشریه سال انتشار مقاله انگلیسی ترجمه فارسی نسخه تمام متن
237821 465727 2011 7 صفحه PDF سفارش دهید دانلود رایگان
عنوان انگلیسی مقاله ISI
Real-time analysis of the growth of granular media by an ultrasonic method: Application to the sedimentation of glass balls in water
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موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
Real-time analysis of the growth of granular media by an ultrasonic method: Application to the sedimentation of glass balls in water
چکیده انگلیسی

In this work, we propose a real-time analysis of the growth of a granular material by a high frequency ultrasonic method (around 5 MHz) based on normal incidence reflectometry. This method is non-destructive. It can be applied to the general case of cloudy solutions in optically opaque sedimentation cells. Results were obtained on glass balls used as a model granular material. Glass balls were sedimenting in water. Measurement of the deposit thickness (varying from several dozen of micrometers to several millimeters) leads to morphological and dynamic properties such as the volume solid fraction and the deposit growing rate. The strong influence of the particle size distribution (median diameter, broadness of the size distribution) on the dynamic properties of the particle packing was determined quantitatively. Our results are in good agreement with the classical model of sedimentation for an isolated sphere (Stokes law).

We study glass balls sedimentation in water by a high frequency ultrasonic method. Real-time measurement of the deposit thickness allows the determination of morphological and dynamic properties such as the volume solid fraction and the deposit growing rate. The strong influence of the particle size distribution on the deposit dynamic properties was determined quantitatively.Figure optionsDownload as PowerPoint slide

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Powder Technology - Volume 208, Issue 2, 25 March 2011, Pages 301–307
نویسندگان
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