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    An optimization framework for process discovery algorithms
    A J M M Weijters
    Journal of Non-Newtonian Fluid Mechanics（2011）SCI 3区
    Today there are many process mining techniques that, based on an event log, allow for the automatic induction of a process model. The process mining algorithms that are able to deal with incomplete event logs, exceptions, and noise typically have many parameters to tune the algor...
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    Mechanism of Drag Increase on Spheres in Viscoelastic Cross-Shear Flows
    Roger I. Tanner,Kostas D. Housiadas,Fuzhong Qi
    Journal of Non-Newtonian Fluid Mechanics（2013）SCI 3区
    A sphere falling along the vorticity axis of a shear flow in a viscoelastic fluid is known to experience an increase in drag from the value in a quiescent fluid (van den Brule and Gheissary, 1993). Two recent papers have analysed the problem and this paper seeks to provide a simp...
    Cited17Views3
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    Numerical Analysis of Start-Up Planar and Axisymmetric Contraction Flows Using Multi-Mode Differential Constitutive Models
    FPT BAAIJENS
    Journal of Non-Newtonian Fluid Mechanics（1993）SCI 3区
    The flow of multi-mode differential model fluids through planar and axisymmetric 4:1 contractions is studied numerically and comparison with experimental results is made where possible. The Phan-Thien/Tanner, Giesekus and Modified Upper Convected Maxwell constitutive models are i...
    Cited43Views3
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    Mixing of Non-Newtonian Fluids in Time-Periodic Cavity Flows
    PD Anderson,OS Galaktionov,GWM Peters,FN van de Vosse,HEH Meijer
    Journal of Non-Newtonian Fluid Mechanics（2000）SCI 3区
    Fluid mixing in two-and three-dimensional time-periodic cavity flows as a function of rheological fluid parameters is studied. Computational methods are applied to obtain accurate descriptions of the velocity fields, which form the basis of the mixing analysis. In addition to som...
    Cited65Views8
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    Entry Flow of Fiber Suspensions in a Straight Channel
    L TANG,MC ALTAN
    Journal of Non-Newtonian Fluid Mechanics（1995）SCI 3区
    The planar channel entry flow of a Newtown fluid containing neutrally buoyant, non-Brownian, slender particles is studied numerically. In particular, the effects of Reynolds number, Re, and a nondimensional suspension parameter, C, on the developing velocity and orientation field...
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    Bubbles Rising Through a Layer of Carbopol Capped with Water
    K. Zhao,E. W. Tedford,M. Zare,I. A. Frigaard,G. A. Lawrence
    Journal of Non-Newtonian Fluid Mechanics（2022）SCI 3区
    Air bubbles are injected into a Carbopol column capped with water to mimic ebullition from lake sediments. The first bubble sets an invisible path as it rises through the Carbopol. Subsequent bubbles rise along this path and, unlike the first bubble, break up into two separate bu...
    Cited3Views16
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    Constitutive Equations for Polymer Melts Predicted by the Doi—Edwards and Curtiss—Bird Kinetic Theory Models
    PK CURRIE
    Journal of Non-Newtonian Fluid Mechanics（1982）SCI 3区
    The constitutive equations derived by Doi and Edwards and by Curtis and Bird from kinetic theory models are shown to possess a potential function U, which completely determines the strain-dependent memory fading. An exact expression for U is found, together with a good approximat...
    Cited122Views7
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    Numerical Simulation of Contraction and Expansion Flows of Langmuir Monolayers
    Evan Mitsoulis,Ioannis Argyropaidas
    Journal of Non-Newtonian Fluid Mechanics（2008）SCI 3区
    Langmuir monolayers consist of amphiphilic molecules at the air–water interface and can be modeled as two-dimensional fluids. Earlier experiments [D.J. Olson, G.G. Fuller, J. Non-Newtonian Fluid Mech. 89 (2000) 187–207] on 4:1 contraction and 4:1 expansion flows have been simulat...
    Cited3Views2
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    Flow Dynamics of a Viscoelastic Fluid Squeezed and Extruded Between Two Parallel Plates
    P. Kaushik,Pranab Kumar Mondal,Suman Chakraborty
    Journal of Non-Newtonian Fluid Mechanics（2015）SCI 3区
    We investigate the flow dynamics of a viscoelastic fluid squeezed and extruded between two parallel plates. We use the Oldroyd-B fluid model to describe the fluid rheology, in an effort to capture the essential flow features. We unveil the force distribution in the flow-field, as...
    Cited34Views7
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    Rotational Rheometry of Liquid Metal Systems: Measurement Geometry Selection and Flow Curve Analysis
    Mohammad Minhajuddin Malik,Manickaraj Jeyakumar,Mohamed S. Hamed,Michael J. Walker,Sumanth Shankar
    Journal of Non-Newtonian Fluid Mechanics（2010）SCI 3区
    In the present study, a rotational measurement technique was used to evaluate viscosities of liquid metals and metallic alloys. Three types of measurement geometries in a high temperature rotational rheometer were evaluated: cone and plate, DIN coaxial, and double concentric cyli...
    Cited22Views13
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    Haemodynamics Around Confined Microscopic Cylinders
    T. Rodrigues,F. J. Galindo-Rosales,L. Campo-Deano
    Journal of Non-Newtonian Fluid Mechanics（2020）SCI 3区
    Motivated by the recent developments in the research of untethered microrobots for performing minimally invasive procedures inside blood vessels, we have devised a novel microfluidic experiment for studying the haemodynamics around different types of cylinders confined inside a s...
    Cited8Views8
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    Numerical Simulation of Large Amplitude Oscillatory Shear of a High-Density Polyethylene Melt Using the MSF Model
    P Wapperom,A Leygue,R Keunings
    Journal of Non-Newtonian Fluid Mechanics（2005）SCI 3区
    We study the flow response in large amplitude oscillatory shear of the molecular stress function (MSF) model that has recently been proposed by Wagner et al. [M.H. Wagner, P. Rubio, H. Bastian, The molecular stress function model for polydisperse polymer melts with dissipative co...
    Cited30Views0
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    Measuring Maximum Tensile Strength of Liquids at Low Stressing Rates
    A. S. Lubansky, R. Brad,P. R. Williams,D. Deganello,T. C. Claypole
    Journal of Non-Newtonian Fluid Mechanics（2011）SCI 3区
    A technique is presented for determining the maximum tensile strength of a given fluid through the analysis of the break-up at the end of a capillary-thinning experiment. This technique allows the characterisation of the tensile strength, an important parameter for understanding ...
    Cited2Views2
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    Weissenberg Effect Of The Fluid M1 - Study By An Optical Method
    D Dupuis
    Journal of Non-Newtonian Fluid Mechanics（1990）SCI 3区
    Abstract An optical method, double laser speckle photography, is applied to the Weissenberg effect obtained with the fluid M1. The second normal stress coefficient is derived from the curvature of the free surface measured by this technique and from rheogoniometer data.
    Cited2Views1
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    Funtional derivatives and finite elements for the steady spinning of a viscoelastic filament
    D Malkus
    Journal of Non-Newtonian Fluid Mechanics（1981）SCI 3区
    In many cases the familiar equations for the steady spinning of a viscoelastic filament can be solved without resort to differential equations. The method of solution is illustrated here using the Maxwell fluid as a model. The integral form of the Maxwell constitutive equation is...
    Cited11Views1
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    Promotion of Ferrofluid Microchannel Flows by Gradient Magnetic Fields
    Wenming Yang,Boshi Fang,Beiying Liu,Zhen Yang
    Journal of Non-Newtonian Fluid Mechanics（2021）SCI 3区
    Inspired from the wide engineering applications of ferrofluids, we investigated the ferrofluid microchannel flows subject to a gradient magnetic field applied perpendicular to the channel walls. The ferrohydrodynamic problem encompassing the Fokker-Planck magnetization equation i...
    Cited5Views8
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    Flow Around Individual Taylor Bubbles Rising in Stagnant Polyacrylamide (PAA) Solutions
    RG Sousa,ML Riethmuller, AMFR Pinto,JBLM Campos
    Journal of Non-Newtonian Fluid Mechanics（2006）SCI 3区
    The flow around single Taylor bubbles rising in stagnant non-Newtonian solutions of polyacrylamide (PAA) polymer was studied using a technique employing simultaneous particle image velocimetry (PIV) and shadowgraphy. Solutions with different weight percentages of polymer, varying...
    Cited41Views3
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    Entry Flow of LDPE Melts in a Planar Contraction
    E Mitsoulis,M Schwetz,H Munstedt
    Journal of Non-Newtonian Fluid Mechanics（2003）SCI 3区
    Experiments using laser–Doppler velocimetry (LDV) and numerical simulations have been undertaken for the creeping entry flow of two rheologically well-characterised low-density polyethylene (LDPE) melts in a 14:1 planar contraction. LDV measurements of the flow reveal a distinct ...
    Cited43Views8
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    New Closure Approximations for the Kinetic Theory of Finitely Extensible Dumbbells
    G Lielens,P Halin,I Jaumain,R Keunings,V Legat
    Journal of Non-Newtonian Fluid Mechanics（1998）SCI 3区
    We address the closure problem for the most elementary non-linear kinetic model of a dilute polymeric solution, known as the Warner finitely extensible non-linear elastic (FENE) dumbbell model. In view of the closure problem, the FENE theory cannot be translated into an equivalen...
    Cited98Views14
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