Decreasing wall shear stress in hydromixture flow after deflocculant application

• Autorzy: Jaworska-Jóźwiak Beata

Identyfikatory

DOI

10.17466/tq2018/22.3/c

• Języki publikacji: EN

Abstrakty

EN

The aim of the paper is to present the influence of selected deflocculants on decreasing the hydromixture viscosity and as a consequence decreasing the wall shear stresses in a flowing medium. Adding deflocculants to improve the conditions encountered in a pipeline during the hydromixture flow is called chemical processing. The experimental studies presented in the article were performed for a hydromixture with a mass concentration of 20% and 43% consisting mostly of solids with the averaged diameter equal to 45.5μm. The measurements were performed for varied doses of deflocculants in three proportions in a wide range of shear rates. The results of experiments have confirmed that the influence of the deflocculant on the wall shear stress is complex as there is an opposing phenomenon strongly depending on the doses of deflocculant samples. The results of the experiments are discussed and major conclusions are drawn.

Słowa kluczowe

EN

slurry flow; wall shear stress; deflocculation

• Wydawca: Politechnika Gdańska
• Czasopismo: TASK Quarterly : scientific bulletin of Academic Computer Centre in Gdansk
• Rocznik: 2018
• Tom: Vol. 22, No 3
• Strony: 225--235
• Opis fizyczny: Bibliogr. 10 poz., rys.

Twórcy

autor

Jaworska-Jóźwiak Beata

• Faculty of Management and Production Engineering, Kielce University of Technology, Aleja Tysiąclecia Państwa Polskiego 7, 25–314 Kielce, Poland

Bibliografia

• [1] Bartosik A 2010 The Archive of Mechanical Engineering LVII(1)45
• [2] Bartosik A 2009 Simulation and experimental studies of axially-symmetrical flow offine- and coarse-dispersive slurry in delivery pipelines, Kielce University of Technology, M11257
• [3] Bartosik A and Jaworska B 2014 Proc. J. of Physics 530 12052
• [4] Caenn R, Darley H and Gray G 2017 Composition and properties of drilling andcompletion fluids, Elsevier
• [5] Chung T 1996 Applied continuum mechanics Cambridge University Press
• [6] Spelay R 2007 Solids transport in laminar, open channel flow of non-Newtonian slurries,University of Saskatchewan (PhD Thesis)
• [7] Korhonen M 2015 Flocculation/deflocculation of cellulosic materials and mineral particlesby polyelectrolyte complexes and nanocelluloses, Aalto University
• [8] Miedema S and Ramsdell R 2015 Slurry Transport Fundamentals. A Historical Overview& The Delft Head Loss & Limit Deposit Velocity Framework, Delft University of Technology
• [9] Matousek V and Vlasak P 2017 Conference for Experimental Fluid Mechanics in Mikulov Czech Republic EPJ Web of Conference180 2120
• [10] Bartosik A 1988 Proc. 6thInt. Conf. On Transport and Sedimentation of Solid ParticlesSc. Papers, Agricultural University of Wroclaw,176 57

Uwagi

PL

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2019).