Academic literature on the topic 'Fluid mechanics. Non-Newtonian fluids'

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Journal articles on the topic "Fluid mechanics. Non-Newtonian fluids"

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ALBAALBAKI, BASHAR, and ROGER E. KHAYAT. "Pattern selection in the thermal convection of non-Newtonian fluids." Journal of Fluid Mechanics 668 (January 5, 2011): 500–550. http://dx.doi.org/10.1017/s0022112010004775.

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The thermogravitational instability in a fluid layer of a non-Newtonian medium heated from below is investigated. Linear and weakly nonlinear analyses are successively presented. The fluid is assumed to obey the Carreau–Bird model. Although the critical threshold is the same as for a Newtonian fluid, it is found that non-Newtonian fluids can convect in the form of rolls, squares or hexagons, depending on the shear-thinning level. Similar to Newtonian fluids, shear-thickening fluids convect only in the form of rolls. The stability of the convective steady branches is carried out to determine under which specific conditions a pattern is preferred. The influence of the rheological and physical parameters is examined and discussed in detail.
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Gagnon, D. A., and P. E. Arratia. "The cost of swimming in generalized Newtonian fluids: experiments with C. elegans." Journal of Fluid Mechanics 800 (July 14, 2016): 753–65. http://dx.doi.org/10.1017/jfm.2016.420.

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Numerous natural processes are contingent on microorganisms’ ability to swim through fluids with non-Newtonian rheology. Here, we use the model organism Caenorhabditis elegans and tracking methods to experimentally investigate the dynamics of undulatory swimming in shear-thinning fluids. Theory and simulation have proposed that the cost of swimming, or mechanical power, should be lower in a shear-thinning fluid compared to a Newtonian fluid of the same zero-shear viscosity. We aim to provide an experimental investigation into the cost of swimming in a shear-thinning fluid from (i) an estimate of the mechanical power of the swimmer and (ii) the viscous dissipation rate of the flow field, which should yield equivalent results for a self-propelled low Reynolds number swimmer. We find the cost of swimming in shear-thinning fluids is less than or equal to the cost of swimming in Newtonian fluids of the same zero-shear viscosity; furthermore, the cost of swimming in shear-thinning fluids scales with a fluid’s effective viscosity and can be predicted using fluid rheology and simple swimming kinematics. Our results agree reasonably well with previous theoretical predictions and provide a framework for understanding the cost of swimming in generalized Newtonian fluids.
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Bullough, W. A., G. E. Cardew, J. Kinsella, and F. E. Boysan. "CFM Self-Teaching in the Fluids Laboratory: Newtonian and Non-Newtonian Flow in Circular Pipes." International Journal of Mechanical Engineering Education 26, no. 3 (1998): 167–76. http://dx.doi.org/10.1177/030641909802600301.

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Experiences of a computer fluid mechanics based self-teaching exercise on the flow of Newtonian and non-Newtonian fluids are reported. This was restricted to the steady flow of fluids in circular pipes. The work involved keyboard-literate students in the first year of a mechanical engineering degree course finding the pipe design laws, in terms of the effects of diameter and pressure gradient increase on flow rate. Also, velocity profile plus development length effects, not easily taught via analytical or laboratory classes, were illustrated.
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Shan, Jie, and Xiaojun Zhou. "The Effect of Bubbles on Particle Migration in Non-Newtonian Fluids." Separations 8, no. 4 (2021): 36. http://dx.doi.org/10.3390/separations8040036.

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The movement of the gas–liquid interface caused by the movement of the bubble position will have an impact on the starting conditions for particle migration. This article quantifies the influence of moving bubbles on the starting conditions of particle migration in non-Newtonian fluids, and it aims to better understand the influence of bubbles moving in non-Newtonian fluids on particle migration to achieve more effective control. First, the forces and moments acting on the particles are analyzed; then, fluid dynamics, non-Newtonian fluid mechanics, extended DLVO (Derjaguin Landau Verwey Overbeek theory), surface tension, and friction are applied on the combined effects of particle migration. Then, we reasonably predict the influence of gas–liquid interface movement on particle migration in non-Newtonian fluids. The theoretical results show that the movement of the gas–liquid interface in non-Newtonian fluids will increase the separation force acting on the particles, which will lead to particle migration. Second, we carry out the particle migration experiment of moving bubbles in non-Newtonian fluid. Experiments show that when the solid–liquid two-phase flow is originally stable, particle migration occurs after the bubble movement is added. This phenomenon shows that the non-Newtonian fluid with bubble motion has stronger particle migration ability. Although there are some errors, the experimental results basically support the theoretical data.
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Sirivat, A., K. R. Rajagopal, and A. Z. Szeri. "An experimental investigation of the flow of non-Newtonian fluids between rotating disks." Journal of Fluid Mechanics 186 (January 1988): 243–56. http://dx.doi.org/10.1017/s0022112088000126.

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The results of an experimental investigation on the flow of a non-Newtonian fluid between rotating, parallel disks are described in this paper. These results are qualitatively different from those exhibited by linearly viscous fluids in that a narrow layer of exceedingly high velocity gradients appears in the non-Newtonian fluid.
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Dai, F., and M. M. Khonsari. "A Theory of Hydrodynamic Lubrication Involving the Mixture of Two Fluids." Journal of Applied Mechanics 61, no. 3 (1994): 634–41. http://dx.doi.org/10.1115/1.2901507.

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Based on the principles of continuum mechanics, we drive the governing equations for the hydrodynamic lubrication involving the mixture of two incompressible fluids. The governing equations are general in the sense that they can be applied to the mixture of any simple non-Newtonian fluid with a Newtonian fluid. A mixture thus formed is considered to be nonhomogeneous and non-Newtonian. In the theoretical development, the interaction between the constituents is taken into consideration. It is shown that a number of currently available models are special cases of the theory presented in this paper. As an example, results are presented for journal bearing performance lubricated with a mixture of a power-law fluid mixed with Newtonian oil.
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McNeil, D. A., A. J. Addlesee, and A. Stuart. "Newtonian and non-Newtonian viscous flows in nozzles." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 214, no. 11 (2000): 1425–36. http://dx.doi.org/10.1243/0954406001523399.

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A study of laminar, Newtonian and non-Newtonian fluids in nozzles has been undertaken. A theoretical model, previously deduced for Newtonian flows in expansions, was developed for Newtonian and non-Newtonian flows in nozzles. The model is based on a two-stream approach where the momentum and kinetic energy stored in the velocity profile of the fluid is altered by an area change of one stream relative to the other. The non-Newtonian liquids investigated were shear thinning. The model was used to investigate these non-Newtonian fluids and to justify the use of simpler, more approximate equations developed for the loss and flow coefficients. The model is compared favourably with data available in the open literature.
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VIERU, D., and I. SIDDIQUE. "AXIAL FLOW OF SEVERAL NON-NEWTONIAN FLUIDS THROUGH A CIRCULAR CYLINDER." International Journal of Applied Mechanics 02, no. 03 (2010): 543–56. http://dx.doi.org/10.1142/s1758825110000640.

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The velocity field, the longitudinal and the normal tensions corresponding to the axial flow of an Oldroyd-B fluid due to an infinite circular cylinder subject to a longitudinal time-dependent stress are determined by means of the Laplace and finite Hankel transforms. The similar solutions for Maxwell, second grade or Newtonian fluids have been obtained as particular cases of the solutions for Oldroyd-B fluids. Finally, by using dimensionless variables, some characteristics of the motion as well as the influence of the material parameters on the behavior of fluid are shown by graphical illustrations.
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Méndez-Mora, Lourdes, Maria Cabello-Fusarés, Josep Ferré-Torres, et al. "Microrheometer for Biofluidic Analysis: Electronic Detection of the Fluid-Front Advancement." Micromachines 12, no. 6 (2021): 726. http://dx.doi.org/10.3390/mi12060726.

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The motivation for this study was to develop a microdevice for the precise rheological characterization of biofluids, especially blood. The method presented was based on the principles of rheometry and fluid mechanics at the microscale. Traditional rheometers require a considerable amount of space, are expensive, and require a large volume of sample. A mathematical model was developed that, combined with a proper experimental model, allowed us to characterize the viscosity of Newtonian and non-Newtonian fluids at different shear rates. The technology presented here is the basis of a point-of-care device capable of describing the nonlinear rheology of biofluids by the fluid/air interface front velocity characterization through a microchannel. The proposed microrheometer uses a small amount of sample to deliver fast and accurate results, without needing a large laboratory space. Blood samples from healthy donors at distinct hematocrit percentages were the non-Newtonian fluid selected for the study. Water and plasma were employed as testing Newtonian fluids for validation of the system. The viscosity results obtained for the Newtonian and non-Newtonian fluids were consistent with pertinent studies cited in this paper. In addition, the results achieved using the proposed method allowed distinguishing between blood samples with different characteristics.
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de Souza Mendes, Paulo R. "Dimensionless non-Newtonian fluid mechanics." Journal of Non-Newtonian Fluid Mechanics 147, no. 1-2 (2007): 109–16. http://dx.doi.org/10.1016/j.jnnfm.2007.07.010.

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Dissertations / Theses on the topic "Fluid mechanics. Non-Newtonian fluids"

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Mennad, Abed. "Singular behaviour of Non-Newtonian fluids." Thesis, Peninsula Technikon, 1999. http://hdl.handle.net/20.500.11838/1253.

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Thesis (MTech (Mechanical Engineering))--Peninsula Technikon, 1999<br>Since 1996, a team at the Centre for Research in Applied Technology (CRATECH) at Peninsula Technikon, under NRF sponsorship and with industrial co-operation, has been involved in the simulation of Non-Newtonian flow behaviour in industrial processes, in particular, injection moulding of polymers. This study is an attempt to deal with some current issues of Non-Newtonian flow, in small areas, from the viewpoint of computational mechanics. It is concerned with the numerical simulation of Non-Newtonian fluid flows in mould cavities with re-entrant corners. The major complication that exists in this numerical simulation is the singularity of the stresses at the entry of the corner, which is responsible for nonintegrable stresses and the propagation of solution errors. First, the study focuses on the derivation of the equations of motion of the flow which leads to Navier- Stokes equations. Thereafter, the occurrence of singularities in the numerical solution of these equations is investigated. Singularities require special attention no matter what numerical method is used. In finite element analysis, local refinement around the singular point is often employed in order to improve the accuracy. However, the accuracy and the rate of convergence are not, in general, satisfactory. Incorporating the nature of singularity, obtained by an asymptotic analysis in the numerical solution, has proven to be a very effective way to improve the accuracy in the neighborhood of the singularity and, to speed up the rate of convergence. This idea has been successfully adopted in solving mainly fracture mechanics problems by a variety of methods: finite difference, finite elements, boundary and global elements, and spectral methods. In this thesis, the singular finite elements method (SFEM), similar in principle to the crack tip element used in fracture mechanics, is proposed to improve the solution accuracy in the vicinity of the singular point and to speed up the rate of convergence. This method requires minor modifications to standard finite element schemes. Unfortunately, this method could not be implemented in this study due to the difficulty in generating the mesh for the singular element. Only the standard finite element method with mesh refinement has been used. The results obtained are in accordance with what was expected.
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Chilcott, Mark David. "Mechanics of non-Newtonian fluids." Thesis, University of Cambridge, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.329946.

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Gouldson, Iain William. "The flow of Newtonian and non-Newtonian fluids in an annular geometry." Thesis, University of Liverpool, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.243035.

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Van, Sittert Fritz Peter. "The effect of pipe roughness on non-Newtonian turbulent flow." Thesis, Cape Technikon, 1999. http://hdl.handle.net/20.500.11838/1035.

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Thesis (MTech (Civil Engineering))--Cape Technikon, Cape Town, 1999<br>Pipe roughness is known to greatly increase the turbulent flow friction factor for Newtonian fluids. The well-known Moody diagram shows that an order of magnitude increase in the friction is possible due to the effect of pipe roughness. However, since the classical work of Nikuradse (1926 -1933), very little has been done in this area. In particular, the effects that pipe roughness might have on non-Newtonian turbulent flow head loss, has been all but totally ignored. This thesis is directed at helping to alleviate this problem. An experimental investigation has been implemented in order to quantify the effect that pipe roughness has on non-Newtonian turbulent flow head loss predictions. The Balanced Beam Tube Viscometer (BBTV), developed at the University of Cape Town, has been rebuilt and refined at the Cape Technikon and is being used for research in this field. The BBTV has been fitted with pipes of varying roughness. The roughness of smooth P\'C pipes was artificially altered using methods similar to those of Nikuradse. This has enabled the accumulation of flow data in laminar and turbulent flow in pipes that are both hydraulically smooth and rough Newtonian and non-Newtonian fluids have been used for the tests. The data have been subjected to analysis using various theories and scaling laws. The strengths and problems associated with each approach are discussed and It is concluded that roughness does have a significant effect on Newtonian as well as non-Newtonlan flow.
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Kabamba, Batthe Matanda. "Evaluation of centrifugal pump performance derating procedures for non-Newtonian slurries." Thesis, Cape Peninsula University of Technology, 2006. http://hdl.handle.net/20.500.11838/2170.

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Thesis (MTech(Civil Engineering))--Cape Peninsula University of Technology, 2006.<br>The performance of a centrifugal pump is altered for slurry or viscous materials (Stepanoff, 1969) and this needs to be accounted for. Usually, the suitable selection and evaluation of centrifugal pumps is based only on water pump performance curves supplied by the pump manufacturer (Wilson, Addie, Sellgren & Clift, 1997). In 1984 Walker and Goulas conducted a number of pump performance tests with kaolin clay slurries and coal slurries on a Warman 4/3 AH horizontal slurry pump and a Hazleton 3-inch B CTL horizontal pump (Walker and Goulas, 1984). Walker and Goulas have analysed the test data and correlated the performance derating both at the best efficiency flow rate (BEP) and at 10% of the best efficiency flow rate (0.1 BEP) to the modified pump Reynolds number (NRep). They have noticed that the head and the efficiency reduction ratio decreased for the pump Reynolds number less then 10⁶. Furthermore, Walker and Goulas obtained a reasonably good agreement (± 5%) between pump test data for non-Newtonian materials and pump performance prediction using the Hydraulics Institute chart. Sery and Slatter (2002) have investigated pump deration for non-Newtonian yield pseudoplastic materials. The NRep was calculated using the Bingham plastic viscosity (µp). Results have shown good agreement with regard to head and efficiency reduction ratios in comparison with previous work. However, Sery and Slatter's pump performance correlation using the HI chart did not reach the same conclusion. Error margin of ± 20% and ± 10% were found for head and efficiency respectively. This study is an attempt to reconcile the differences between Walker and Goulas (1984) and Sery and Slatter (2002) and extend the evaluation of these derating methods to pseudoplastic materials. The test work was conducted in the Flow Process Research Centre laboratory of the Cape Peninsula University of Technology using two centrifugal pumps; a Warman 6/4 and a GrW 4/3. The materials used were water, CMC solution bentonite and kaolin suspension at different concentrations (7% and 9% by weight for bentonite; 5%, 6% and 7% by weight for CMC; 17%, 19% and 21% by volume for kaolin).
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Keiller, Robert A. "Non-Newtonian extensional flows." Thesis, University of Cambridge, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.315030.

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Thorvaldsen, Gary Sven. "The effect of the particle size distribution on non-Newtonian turbulent slurry flow in pipes." Thesis, Cape Technikon, 1996. http://hdl.handle.net/20.500.11838/896.

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Thesis (MTech (Chemical Engineering))--Cape Technikon, Cape Town,1996<br>The handling of solid-liquid suspensions is an important concern within the chemical and processing industries and many theoretical models have been proposed to try and explain and predict turbulent flow behaviour. However, the prediction of turbulent flow from only the viscous properties of non-Newtonian suspensions has over the years been questioned by researchers. This thesis considers theoretical models well established in the literature and the Slatter model, which uses both the rheology of the suspension and the particle size distribution of the solids. These models are used to analyze the experimental data and the effect that particle size and the particle size distribution has on turbulent flow behaviour. The literature concerning the rheological fundamentals relevant to fluid flow in pipes has been examined. The Newtonian turbulent flow model as well as the non-Newtonian models of Dodge & Metzner, Torrance, Kemblowski & Kolodziejski, Wilson & Thomas and Slatter have been reviewed. Test work was conducted at the University of Cape Town's Hydrotransport Research Laboratory using a pumped recirculating pipe test rig. The test apparatus has been fully described and calibration and test procedures to enable collecting of accurate pipeline data have been presented. Three slurries were used in test work namely kaolin clay, mixture I (kaolin clay and rock flour) and mixture 2 (kaolin clay, rock flour and sand) with ad,s particle size ranging from 24/Lm to 170/Lm. The yield pseudoplastic model has been used to model and predict the laminar flow of the suspensions that were tested and the meth9J adopted by Neill (1988) has been used to determine the rheological constants. The pipeline test results have been presented as pseudoshear diagrams together with the theoretical model lines providing a visual appraisal of the performance of each model. The Slatter model predicts the test data best with the other theoretical models that were considered tending to under predict the head loss. The reason the Slatter model performs better than the other theoretical models is because this model can account for the wall roughness and particle roughness effect. Evidence to support this statement has been presented. This thesis highlights the fact that the particle size distribution is a vitally important property of the suspension and that it does influence turbulent flow behaviour. It shows that turbulence modelling using the particle roughness effect (eg Slatter, 1994) is valid and can be adopted for non-Newtonian slurries. It is concluded that the particle size distribution must be used to determine the particle roughness effect and this effect must be incorporated in the turbulent flow analysis of non-Newtonian slurries.
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Redmon, Jessica. "Stochastic Bubble Formation and Behavior in Non-Newtonian Fluids." Case Western Reserve University School of Graduate Studies / OhioLINK, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=case15602738261697.

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Ntamba, Ntamba Butteur Mulumba. "Non-Newtonian pressure loss and discharge coefficients for short square-edged orifices plates." Thesis, Cape Peninsula University of Technology, 2011. http://hdl.handle.net/20.500.11838/1252.

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Thesis (MTech (Mechanical Engineering))--Cape Peninsula University of Technology, 2011.<br>Despite the extensive research work carried out on flow through short square-edged orifice plates over the last century (e.g. Johansen, 1930; Benedict, 1977; Alvi et al., 1978; Swamee, 2005; ESDU, 2007), gaps in the engineering data still exist for certain ranges of flow conditions and geometries. The majority of data available in the literature are for Newtonian fluids in the turbulent flow regime (ESDU, 2007). Insufficient data have been observed for the orifice with pipe diameter ratio, β = 0.2, in the laminar flow regime. There are no experimental data for β = 0.3 and 0.57. The objective of this thesis was to conduct wide-ranging experimental studies of the flow in orifice plates, which included those geometrical configurations, by measuring pressure loss coefficients and discharge coefficients across the orifice plates using both Newtonian fluids and non-Newtonian fluids in both laminar and turbulent flow regimes. The test work was conducted on the valve test rig at the Cape Peninsula University of Technology. Four classical circular short square-edged orifice plates having, β = 0.2, 0.3, 0.57 and 0.7, were tested. In addition, two generation 0 Von Koch orifice plates (Von Koch, 1904), with equivalent cross sectional area were also tested for β = 0.57. Water was used as Newtonian fluid to obtain turbulent regime data and also for calibration purposes to ensure measurement accuracy and carboxymethyl cellulose, bentonite and kaolin slurries were used at different concentrations to obtain laminar and transitional loss coefficient data. The hydraulic grade line method was used to evaluate pressure loss coefficients (Edwards et al., 1985), while the flange tap arrangement method was used to determine the discharge coefficients (ESDU, 2007). A tube viscometer with three different pipe diameters was used to obtain the rheological properties of the fluids. The results for each test are presented in the form of pressure loss coefficient (kor) and discharge coefficient (Cd) against pipe Reynolds number (Re)
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Modekurti, Arvind. "Numerical Investigation of Fluid Flow and Heat Transfer for Non-Newtonian Fluids Flowing through Twisted Ducts with Elliptical Cross-sections." University of Cincinnati / OhioLINK, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1504782280273333.

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Books on the topic "Fluid mechanics. Non-Newtonian fluids"

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Böhme, G. Non-Newtonian fluid mechanics. North-Holland, 1987.

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I͡Ankov, Viktor Ivanovich. Osnovy mekhaniki nenʹi͡utonovskikh zhidkosteĭ: Uchebnoe posobie. Tverskoĭ politekhn. in-t, 1991.

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Bubbles, drops, and particles in non-Newtonian fluids. 2nd ed. CRC Taylor & Francis, 2007.

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Richardson, J. F. (John Francis), Knovel (Firm), and ScienceDirect (Online service), eds. Non-Newtonian flow and applied rheology: Engineering applications. 2nd ed. Butterworth-Heinemann/Elsevier, 2008.

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Bubbles, drops, and particles in non-Newtonian fluids. CRC Press, 1993.

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Meeting, American Society of Mechanical Engineers Winter. Recent advances in non-newtonian flows: Presented at the Winter Annual Meeting of the American Society of Mechanical Engineers, Anaheim, California, November 8-13, 1992. American Society of Mechanical Engineers, 1992.

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International, Workshop on Numerical Methods for Non-Newtonian Flows (12th 2001 Monterey Bay Calif ). XIIth International Workshop on Numerical Methods for Non-Newtonian Flows. Elsevier, 2002.

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Farina, Angiolo, Lorenzo Fusi, Andro Mikelić, Giuseppe Saccomandi, Adélia Sequeira, and Eleuterio F. Toro. Non-Newtonian Fluid Mechanics and Complex Flows. Edited by Angiolo Farina, Andro Mikelić, and Fabio Rosso. Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-74796-5.

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Zhou cheng jian xi fei niu dun run hua ji de fei xian xing dong li xue. Beijing li gong da xue chu ban she, 2009.

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service), SpringerLink (Online, ed. Cavitation in Non-Newtonian Fluids: With Biomedical and Bioengineering Applications. Springer-Verlag Berlin Heidelberg, 2011.

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Book chapters on the topic "Fluid mechanics. Non-Newtonian fluids"

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Irgens, Fridtjov. "Basic Equations in Fluid Mechanics." In Rheology and Non-Newtonian Fluids. Springer International Publishing, 2013. http://dx.doi.org/10.1007/978-3-319-01053-3_3.

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Cioranescu, D., V. Girault, and K. R. Rajagopal. "Classical Non-Newtonian Fluids." In Advances in Mechanics and Mathematics. Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-39330-8_4.

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Lyubimova, T. P. "Thermal Convection of Non-Newtonian Fluids under Low Gravity Conditions." In Microgravity Fluid Mechanics. Springer Berlin Heidelberg, 1992. http://dx.doi.org/10.1007/978-3-642-50091-6_57.

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Nijenhuis, Klaas, Gareth McKinley, Stephen Spiegelberg, et al. "Non-Newtonian Flows." In Springer Handbook of Experimental Fluid Mechanics. Springer Berlin Heidelberg, 2007. http://dx.doi.org/10.1007/978-3-540-30299-5_9.

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Bush, M. B. "Applications in Non-Newtonian Fluid Mechanics." In Viscous Flow Applications. Springer Berlin Heidelberg, 1989. http://dx.doi.org/10.1007/978-3-642-83683-1_7.

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Draad, Aswin A., and Martien A. Hulsen. "Transition From Laminar to Turbulent Flow for Non-Newtonian Fluids." In Fluid Mechanics and Its Applications. Springer Netherlands, 1995. http://dx.doi.org/10.1007/978-94-011-0457-9_21.

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Jones, R. N., and K. Walters. "The Basic Equations of Non-Newtonian Fluid Mechanics." In Rheological Fundamentals of Polymer Processing. Springer Netherlands, 1995. http://dx.doi.org/10.1007/978-94-015-8571-2_1.

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Malkus, David S., John A. Nohel, and Bradley J. Plohr. "Oscillations in Piston-Driven Shear Flow of a Non-Newtonian Fluid." In Fluid Mechanics and Its Applications. Springer Netherlands, 1995. http://dx.doi.org/10.1007/978-94-011-0191-2_5.

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Janela, João, Alexandra Moura, and Adélia Sequeira. "Towards a Geometrical Multiscale Approach to Non-Newtonian Blood Flow Simulations." In Advances in Mathematical Fluid Mechanics. Springer Berlin Heidelberg, 2009. http://dx.doi.org/10.1007/978-3-642-04068-9_18.

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Farina, Angiolo, Lorenzo Fusi, Andro Mikelić, Giuseppe Saccomandi, Adélia Sequeira, and Eleuterio F. Toro. "Correction to: Non-Newtonian Fluid Mechanics and Complex Flows." In Lecture Notes in Mathematics. Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-74796-5_6.

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Conference papers on the topic "Fluid mechanics. Non-Newtonian fluids"

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Caggio, M., and Š. Nečasová. "NOTE ON THE PROBLEM OF COMPRESSIBLE NON-NEWTONIAN FLUIDS." In Topical Problems of Fluid Mechanics 2019. Institute of Thermomechanics, AS CR, v.v.i., 2019. http://dx.doi.org/10.14311/tpfm.2019.005.

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Ugarelli, R., M. Bottarelli, and V. Di Federico. "Displacement of non-Newtonian compressible fluids in plane porous media flow." In ADVANCES IN FLUID MECHANICS 2008. WIT Press, 2008. http://dx.doi.org/10.2495/afm080231.

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Baumert, H. Z., and B. Wessling. "TURBULENT MIXING IN NON-NEWTONIAN DISPERSIONS." In Topical Problems of Fluid Mechanics 2016. Institute of Thermomechanics, AS CR, v.v.i., 2016. http://dx.doi.org/10.14311/tpfm.2016.002.

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Bertola, Volfango, and Emilio Cafaro. "Formal Analogy Between Non-Newtonian Flows and Compressible Flows." In 3rd Theoretical Fluid Mechanics Meeting. American Institute of Aeronautics and Astronautics, 2002. http://dx.doi.org/10.2514/6.2002-3078.

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"Dissipative properties of non-Newtonian fluid under impact load." In Engineering Mechanics 2018. Institute of Theoretical and Applied Mechanics of the Czech Academy of Sciences, 2018. http://dx.doi.org/10.21495/91-8-321.

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Di Federico, V., S. Cintoli, and G. Bizzarri. "Viscous spreading of non-Newtonian gravity currents in radial geometry." In ADVANCES IN FLUID MECHANICS 2006. WIT Press, 2006. http://dx.doi.org/10.2495/afm06040.

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7

Fomin, Sergei, and Toshiyuki Hashida. "Rimming Flow of Non-Newtonian Fluids." In ASME 2004 International Mechanical Engineering Congress and Exposition. ASMEDC, 2004. http://dx.doi.org/10.1115/imece2004-61443.

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The present study is related to the rimming flow of non-Newtonian fluid on the inner surface of a horizontal rotating cylinder. Using a scale analysis, the main characteristic scales and non-dimensional parameters, which describe the principal features of the process, are found. Exploiting the fact that one of the parameters is very small, an approximate asymptotic mathematical model of the process is developed and justified. For a wide range of fluids, a general constitutive law can be presented by a single function relating shear stress and shear rate that corresponds to a generalized Newtonian model. For this case, the run-off condition for rimming flow is derived. Provided the run-off condition is satisfied, the existence of a steady-state solution is proved. Within the bounds stipulated by this condition, film thickness admits a continuous solution, which corresponds to subcritical and critical flow regimes. It is proved that for the critical regime solution has a corner on the rising wall of the cylinder. In the supercritical flow regime, a discontinuous solution is possible and a hydraulic jump may occur. It is shown that straightforward leading order steady-state theory can work well to study the shock location and height. For the particular case of a power-law model, the analytical solution of steady-state equation for the fluid film thickness is found in explicit form. More complex theological models, which show linear Newtonian behavior at low shear rates with transition to power-law at moderate shear rates, are also considered. In particular, numerical computations were carried out for Ellis model. For this model, some analytical asymptotic solutions have been also obtained in explicit form and compared with the results of numerical computations. Based on these solutions, the optimal values of parameters, which should be used in the Ellis equation for correct simulation of coating flows, are determined; the criteria that guarantee the steady-state continuous solutions are defined; the size and location of the stationary hydraulic jumps, which form when the flow is in the supercritical state, are obtained for the different flow parameters.
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8

Šedivý, Dominik, Simona Fialová, and Darina Jašíková. "Flow of Newtonian and non-Newtonian fluid through pipe with flexible wall." In 37TH MEETING OF DEPARTMENTS OF FLUID MECHANICS AND THERMODYNAMICS. Author(s), 2018. http://dx.doi.org/10.1063/1.5049922.

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9

Zhao, Jiangang, and Roger E. Khayat. "Jet Impingement of a Non-Newtonian Fluid." In ASME 2006 International Mechanical Engineering Congress and Exposition. ASMEDC, 2006. http://dx.doi.org/10.1115/imece2006-15993.

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The similarity solutions are presented for the wall flow which is formed when a smooth planar jet of power-law fluids impinges vertically on to a horizontal plate, and spreads out in a thin layer bounded by a hydraulic jump. This problem is formulated analogous to radial jet flow problem and the solution procedure is accounted for by means of similarity solution of the boundary-layer equation [1] for Newtonian fluids. For the convenience of analysis, the flow may be divided into three regions, namely a developing boundary-layer region, a fully viscous boundary-layer region, and a hydraulic jump region. The similarity solutions of the film thickness and free surface velocity in fully viscous boundary-layer region include unknown constant L, which is solved numerically and approximately in the developing boundary-layer flow region. Comparison between the numerical and approximate solutions leads generally to good agreement, except for severely shear-thinning fluids. The boundary-layer solution depends on two parameters: power-law index n and α, the dimensionless flow parameters. The effect of α on film thickness and free surface velocity is investigated. The relations between the position of the hydraulic jump and dimensionless flow parameter are obtained and the effect of α on the position of the jump is presented.
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Chambarel, Andre´. "Numerical Tool for Non Newtonian Fluids Extrusion." In ASME 2002 International Mechanical Engineering Congress and Exposition. ASMEDC, 2002. http://dx.doi.org/10.1115/imece2002-33933.

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The main difficulty of the numerical approach of non Newtonian fluids is its strong non linearities. For example we propose a numerical simulation of the flow of non Newtonian fluid through a capillary rheometer. This model is associated with the extrusion phenomenon.
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Reports on the topic "Fluid mechanics. Non-Newtonian fluids"

1

Long, Kevin Nicholas, Kurtis Ross Ford, and William M. Scherzinger. Modeling a Newtonian Fluid with a Rate-Dependent, Von Mises Plasticity Model for Solid Mechanics Applications. Office of Scientific and Technical Information (OSTI), 2015. http://dx.doi.org/10.2172/1177723.

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