Non-Newtonian fluids are commonly used in a wide range of industries; one example biogas power plants. Proper measurements and modeling such can be crucial from the design operations point view. Results presented this study covered seven samples three plants (a sewage sludge treatment plant, utilization station plant sugar factory), including mechanically thickened excessive activated (MTEAS), ...

Pipeline transportation has become an effective way to transport sludge from wastewater treatment plants due its high efficiency, low operating cost, and environmental pollution. Before designing optimizing the sludge-conveying pipeline, it is first necessary analyze rheological properties of sludge. In this paper, activated with varying volume concentrations (Cw) 2.38%, 3.94%, 5.39% was used a...

Abstract Settling velocity or depositional is considered a key parameter to account for in the drilling technology of oil and gas wells as well hydrocarbon processing since an accurate estimation this allows transport cuttings efficiently, avoids non-productive time, helps avoid costly problems. Understanding settling fluid with high salinity will help better separation natural streams faciliti...

Secondary settling tanks (SSTs) are the most hydraulically sensitive unit operations in biological wastewater treatment plants. The maximum permissible inflow to the plant depends on the efficiency of SSTs in separating and thickening the activated sludge. The flow conditions and solids distribution in SSTs can be predicted using computational fluid dynamics (CFD) tools. Despite extensive studi...

The dynamics of an oscillating bubble near a liquid–liquid interface is complex multiphase flow problem due to the highly nonlinear interaction, such as fragmentation and tearing. When one liquid mediums non-Newtonian, its constitution would significantly influence both motion evolution. In this study, numerical model established based on Eulerian finite element method with non-Newtonian fluid ...

ABSTRACT Non-Newtonian rheology effects, such as pseudoplasticity and viscoplasticity, are understood shear stresses, incorporated to the energy slope term in Shallow-Water Equations (SWE). However, non-Newtonian stresses dependent of rate, whose formulation is a function gradient velocity profile bottom. This study investigated two rate formulations that commonly applied SWE literature: 1) non...

During the complicated cardiac surgery on a non-beating heart with cardiopulmonary bypass, protection of the heart is accomplished by injecting cold cardioplegic solutions. In most forms of circulatory shock, it is necessary to immediately restore the circulating volume. Intravenous solutions of volume expanders, such as hydroxyethyl starch and dextrans, are used to increase the volume of fluid...

The rheological behaviour of pulsed electric field (PEF) processed and thermally pasteurised mango nectar (Mangifera indica) was evaluated using controlled stress rheometer. The mango nectar was subjected to pulsed electric field (PEF) as well as thermal processing. The rheological parameter shear stress was measured up to the shear rate of 750 s -1 using co-axial cylinder attachment at wide ra...

ABSTRACT Fruit pulps undergo temperature variations during processing, leading to viscosity changes. This study aimed analyse the rheological behaviour of macaíba pulp at different temperatures (10 50 ºC, with 5 ºC increments) and speeds (2.5 200 rpm, totalling 17 speeds). Experimental measurements were performed in a Brookfield viscometer, fitting Ostwald-de-Waele, Mizrahi-Berk, Herschel-Bulkl...