Studying the factors affecting the drag coefficient in non- newtonian fluids
المؤلفون المشاركون
Muhammad, Muhannad Abd al-Razzaq
Halagy, Dina Adil Iliya
المصدر
Iraqi Journal of Chemical and Petroleum Engineering
العدد
المجلد 14، العدد 2 (30 يونيو/حزيران 2013)، ص ص. 29-39، 11ص.
الناشر
تاريخ النشر
2013-06-30
دولة النشر
العراق
عدد الصفحات
11
التخصصات الرئيسية
الملخص EN
The aim of this research is to study the factors affecting drag coefficient (C d) in non-Newtonian fluids which are the rheological properties, concentrations of non- Newtonian fluids, particle shape, size and the density difference between particle and fluid .Also this study shows drag coefficient (C d) and particle Reynolds' number (ReP) relationship and the effect of rheological properties on this relationship.
An experimental apparatus was designed and built, which consists of Perspex pipe of length of 160 cm.
and inside diameter of 7.8 cm.
to calculate the settling velocity, also electronic circuit was designed to calculate the falling time of particles through fluid.
Types of solid particles were used ; glass spheres and crushed rocks as irregularly shaped particles with different diameters and compared with each other.
The concept of equivalent spherical diameter (D S) was used to calculate the diameters of irregularly shaped particles.
The flow behavior for Non-Newtonian fluids was represented by Power-Law model.
Two types of polymers were used, Carboxy Methyl Cellulose CMC with concentrations of (3.71, 5, 15 and 17.5) g / l and polyacrylamide with concentrations of (2, 4 and 6) g / l.
The results showed that the drag coefficient decreased with increasing settling velocity and particle diameters and sizes; and increased as fluid become far from Newtonian behavior and concentrations and the density difference between particle and fluid.
The results also showed that the rheological properties of Non-Newtonian fluids have a great effect on the drag coefficient and particle Reynolds number relationship, especially in laminar-slip regime and decreases or vanishes at transition and turbulentslip regimes.
New correlations were obtained which relates drag coefficient with concentrations of polymers and with flow behavior indices for spherical and irregular shaped particles in Carboxy Methyl Cellulose CMC and polyacrylamide solutions.
نمط استشهاد جمعية علماء النفس الأمريكية (APA)
Muhammad, Muhannad Abd al-Razzaq& Halagy, Dina Adil Iliya. 2013. Studying the factors affecting the drag coefficient in non- newtonian fluids. Iraqi Journal of Chemical and Petroleum Engineering،Vol. 14, no. 2, pp.29-39.
https://search.emarefa.net/detail/BIM-337186
نمط استشهاد الجمعية الأمريكية للغات الحديثة (MLA)
Muhammad, Muhannad Abd al-Razzaq& Halagy, Dina Adil Iliya. Studying the factors affecting the drag coefficient in non- newtonian fluids. Iraqi Journal of Chemical and Petroleum Engineering Vol. 14, no. 2 (Jun. 2013), pp.29-39.
https://search.emarefa.net/detail/BIM-337186
نمط استشهاد الجمعية الطبية الأمريكية (AMA)
Muhammad, Muhannad Abd al-Razzaq& Halagy, Dina Adil Iliya. Studying the factors affecting the drag coefficient in non- newtonian fluids. Iraqi Journal of Chemical and Petroleum Engineering. 2013. Vol. 14, no. 2, pp.29-39.
https://search.emarefa.net/detail/BIM-337186
نوع البيانات
مقالات
لغة النص
الإنجليزية
الملاحظات
Includes appendices: p. 37-39
رقم السجل
BIM-337186
قاعدة معامل التأثير والاستشهادات المرجعية العربي "ارسيف Arcif"
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