Relevant bibliographies by topics / New Viscosity Function

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers

Academic literature on the topic 'New Viscosity Function'

Author: Grafiati
Published: 4 June 2021
Last updated: 1 February 2022

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Journal articles on the topic "New Viscosity Function"

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Stanciu, I. "A new mathematical model for the viscosity of vegetable oils based on freely sliding molecules." Grasas y Aceites 70, no. 3 (2019): 318. http://dx.doi.org/10.3989/gya.0824182.

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Viscosity is one of the most important parameters for vegetable oil. A new mathematical viscosity model was developed based on freely sliding molecules with Lennard-Jones’ potential and linear density-temperature relation. According to the functions derived from the new model, viscosity gradually decreases with temperature at atmospheric pressure. Viscosity increases with density, however, due to the molecular momentum transfer and statistical effect of average molecular potential. After the temperature dependent function is fitted to the 417 experimental data points collected from references
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Eto, T. K., B. J. Costello, S. W. Wenzel, R. M. White, and B. Rubinsky. "Viscosity Sensing With Lamb-Wave Microsensor: Dimethylsulfoxide Solution Viscosity as a Function of Temperature." Journal of Biomechanical Engineering 115, no. 3 (1993): 329–31. http://dx.doi.org/10.1115/1.2895494.

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Recently, a new microsensor employing low-velocity ultrasonic Lamb waves was developed and demonstrated to be capable of measuring the viscosity of solutions in small volumes. The microsensor, when attached to a temperature-controlled stage, can measure viscosity as a function of temperature. In this investigation, the ultrasonic Lamb-wave oscillator is employed to experimentally measure the viscosity of dimethylsulfoxide (Me2SO) solutions as a function of temperature. The microsensor and the experimental procedure are described and results for 1M, 3M, and 5M Me2SO aqueous solutions are presen
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Ahmed, Mushtaq, and Waseem Ahmed Khan. "A class of new exact solutions of the system of PDE for the plane motion of viscous incompressible fluids in the presence of body force." International Journal of Applied Mathematical Research 7, no. 2 (2018): 42. http://dx.doi.org/10.14419/ijamr.v7i2.9998.

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The purpose of this paper is to indicate a class of exact solutions of the system of partial differential equations governing the steady, plane motion of incompressible fluid of variable viscosity with body force term to the right-hand side of Navier-Stokes equations. The class consists of the stream function characterized by the equation in polar coordinates and where and are continuously differentiable functions and the function is such that where a non-zero constant is and overhead prime represents derivative with respect to . When or we show exact solutions for given one component of the b
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Doorwar, Shashvat, and Kishore K. Mohanty. "Viscous-Fingering Function for Unstable Immiscible Flows." SPE Journal 22, no. 01 (2016): 019–31. http://dx.doi.org/10.2118/173290-pa.

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Summary Displacement of viscous oils often involves unstable immiscible flow. Viscous instability and its influence on relative permeability were studied in this work at different viscosity ratios, injection rates, and domain widths. Micromodels and pore-scale models were used to visually inspect the interplay of viscous and capillary forces in the viscous-dominated regime. A new dimensionless scaling parameter, NI=(vwμwσow)(μoμw)2(D2/K), was developed that is useful in predicting the recoveries of unstable displacements at various viscosity ratios and injection rates. The scaling parameter sh
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Chandler, W. L., and G. Schmer. "Evaluation of a new dynamic viscometer for measuring the viscosity of whole blood and plasma." Clinical Chemistry 32, no. 3 (1986): 505–7. http://dx.doi.org/10.1093/clinchem/32.3.505.

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Abstract We evaluated a new type of dynamic viscometer, the Sonoclot Coagulation Analyzer, for use in measuring the viscosity of whole-blood and plasma. Such information can be useful in monitoring patients with hyperviscosity syndromes, e.g., from multiple myeloma. A vibrating Teflon or plastic probe continuously measures dynamic viscosity. The instrument can be calibrated to measure a range of viscosities from 0.69 to 23 cP (mN X s X m-2) or more. The coefficient of variation at 0.69 cP was 3-4% for measurements with the Teflon probe, 7-9% with the plastic probe. Viscosity measured at 37 deg
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Chu, Yangxi, Erin Evoy, Saeid Kamal, et al. "Viscosity of erythritol and erythritol–water particles as a function of water activity: new results and an intercomparison of techniques for measuring the viscosity of particles." Atmospheric Measurement Techniques 11, no. 8 (2018): 4809–22. http://dx.doi.org/10.5194/amt-11-4809-2018.

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Abstract. A previous study reported an uncertainty of up to 3 orders of magnitude for the viscosity of erythritol (1,2,3,4-butanetetrol)–water particles. To help reduce the uncertainty in the viscosity of these particles, we measured the diffusion coefficient of a large organic dye (rhodamine B isothiocyanate–dextran, average molecular weight ∼70000gmol-1) in an erythritol–water matrix as a function of water activity using rectangular-area fluorescence recovery after photobleaching (rFRAP). The diffusion coefficients were then converted to viscosities of erythritol–water particles using the St
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Froelich, D., R. Muller, and Y. H. Zang. "New Extensional Rheometer for Elongational Viscosity and Birefringence Measurements: Experimental Results and Interpretation." Rubber Chemistry and Technology 59, no. 4 (1986): 564–73. http://dx.doi.org/10.5254/1.3538218.

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Abstract This study shows that by using the recoverable strain, one can represent the elongational viscosity ηe=σe/˙ε as a linear function of the quantity λr2−λr−1, characteristic of a neo-Hookian material. The elongational viscosity is then the sum of two contributions: One is related to the entropic elasticity of the chains through the recoverable deformation of the sample. The other is related to the shear viscosity at a shear rate equivalent to the extensional strain rate. In absence of a simple theoretical justification for such an equation, more experiments are being undertaken with diff
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Liu, Jun Qin, Feng Qing Zhao, Pei Xin Li, and Qian Chen. "Preparation of New Adhesive for Tobacco Sheet." Advanced Materials Research 466-467 (February 2012): 137–40. http://dx.doi.org/10.4028/www.scientific.net/amr.466-467.137.

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The purpose of this work was to prepare a multi-function adhesive for reconstituted tobacco. With chitin as the main raw material, adding complex moisturizer, cross-linking agent and other additives, an adhesive for tobacco sheet was obtained. Factor design was used in the experiment for formulation optimization. The product possesses excellent viscosity, water resistance and tensile strength.
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Naeem, Rana Khalid, and Mushtaq Ahmed. "A class of new exact solutions of the equations governing the steady plane flows of incompressible fluid of variable viscosity." International Journal of Basic and Applied Sciences 4, no. 4 (2015): 429. http://dx.doi.org/10.14419/ijbas.v4i4.5064.

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<p>The objective of this paper is to indicate a class of new exact solutions of the equations governing the steady plane flows of incompressible fluid of variable viscosity. The class consists of the stream function characterized by equation (2). Exact solutions are determined for and When is arbitrary we can construct an infinite set of streamlines and the velocity components, viscosity function, generalized energy function and temperature distribution . Therefore, an infinite set of solutions to flow equations. When is not arbitrary, there are two values of and therefore, two exact sol
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Dintenfass, Leopold. "A new outlook on body fluid viscosity and cell function: Concluding remarks and discussion." Biorheology 27, no. 3-4 (1990): 611–16. http://dx.doi.org/10.3233/bir-1990-273-440.

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Dissertations / Theses on the topic "New Viscosity Function"

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Ferreira, Márleson Rôndiner dos Santos. "Modelagem numérica e mecânica de escoamentos elasto-viscoplásticos tixotrópicos : investigações com uma nova função viscoplástica." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2018. http://hdl.handle.net/10183/183273.

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Neste trabalho é apresentado a modelagem mecânica e numérica de um escoamento elastoviscoplástico tixotrópico, em termos dos campos de velocidade, pressão, tensão e parâmetro de estrutura. A discretização numérica é feita pelo Método de Elementos Finitos Estabilizado, também conhecido como Galerkin Mínimos Quadrados (GMQ), através de elementos quadrangulares bilineares. O clássico problema da cavidade é utilizado nas simulações, a fim de comparar a formulação e o código utilizados com os resultados conhecidos na literatura. Além disso, apresenta-se o estudo de materiais elasto-viscoplástico ti
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Books on the topic "New Viscosity Function"

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Batterman, Robert W. A Middle Way. Oxford University Press, 2021. http://dx.doi.org/10.1093/oso/9780197568613.001.0001.

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This book focuses on a method for exploring, explaining, and understanding the behavior of large many-body systems. It describes an approach to non-equilibrium behavior that focuses on structures (represented by correlation functions) that characterize mesoscale properties of the systems. In other words, rather than a fully bottom-up approach, starting with the components at the atomic or molecular scale, the “hydrodynamic approach” aims to describe and account for continuum behaviors by largely ignoring details at the “fundamental” level. This methodological approach has its origins in Einste
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Book chapters on the topic "New Viscosity Function"

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Tanko, J. M. "Free-Radical Chemistry in Supercritical Carbon Dioxide." In Green Chemistry Using Liquid and Supercritical Carbon Dioxide. Oxford University Press, 2004. http://dx.doi.org/10.1093/oso/9780195154832.003.0008.

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During the 1990s, the chemical industry has focused on ways to reduce and prevent pollution caused by chemical synthesis and manufacturing. The goal of this approach is to modify existing reaction conditions and/or to develop new chemistries that do not require the use of toxic reagents or solvents, or that do not produce toxic by-products. The terms “environmentally benign synthesis and processing” and “green chemistry” have been coined to describe this approach where the environmental impact of a process is as important an issue as reaction yield, efficiency, or cost. Most chemical reactions require the use of a solvent that may serve several functions in a reaction: for example, ensuring homogeneity of the reactants, facilitating heat transfer, extraction of a product (or by-product), or product purification via chromatography. However, because the solvent is only indirectly involved in a reaction (i.e., it is not consumed), its disposal becomes an important issue. Thus, one obvious approach to “green chemistry” is to identify alternative solvents that are nontoxic and/or environmentally benign. Supercritical carbon dioxide (sc CO2) has been identified as a solvent that may be a viable alternative to solvents such as CCl4, benzene, and chloroflurocarbons (CFCs), which are either toxic or damaging to the environment. The critical state is achieved when a substance is taken above its critical temperature and pressure (Tc, Pc). Above this point on a phase diagram, the gas and liquid phases become indistinguishable. The physical properties of the supercritical state (e.g., density, viscosity, solubility parameter, etc.) are intermediate between those of a gas and a liquid, and vary considerably as a function of temperature and pressure. The interest in sc CO2 specifically is related to the fact that CO2 is nontoxic and naturally occurring. The critical parameters of CO2 are moderate (Tc = 31 °C, Pc = 74 bar), which means that the supercritical state can be achieved without a disproportionate expenditure of energy. For these two reasons, there is a great deal of interest in sc CO2 as a solvent for chemical reactions. This chapter reviews the literature pertaining to free-radical reactions in sc CO2 solvent.
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Saltzman, W. Mark. "Cell Delivery and Recirculation." In Tissue Engineering. Oxford University Press, 2004. http://dx.doi.org/10.1093/oso/9780195141306.003.0016.

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Perhaps the simplest realization of tissue engineering involves the direct administration of a suspension of engineered cells—cells that have been isolated, characterized, manipulated, and amplified outside of the body. One can imagine engineering diverse and useful properties into the injected cells: functional enzymes, secretion of drugs, resistance to immune recognition, and growth control. We are most familiar with methods for manipulating the cell internal chemistry by introduction or removal of genes; for example, the first gene therapy experiments involved cells that were engineered to produce a deficient enzyme, adenine deaminase (see Chapter 2). But genes also encode systems that enable cell movement, cell mechanics, and cell adhesion. Conceivably, these systems can be modified to direct the interactions of an administered cell with its new host. For example, cell adhesion signals could be introduced to provide tissue targeting, cytoskeleton-associated proteins could be added to alter viscosity and deformability (in order to prolong circulation time), and motor proteins could be added to facilitate cell migration. Ideally, cell fate would also be engineered, so that the cell would move to the appropriate location in the body, no matter how it was administered; for example, transfused liver cells would circulate in the blood and, eventually, crawl into the liver parenchyma. Cells find their place in developing organisms by a variety of chemotactic and adhesive signals, but can these same signaling mechanisms be engaged to target cells administered to an adult organism? We have already considered the critical role of cell movement in development in Chapter 3. In this chapter, the utility of cell trafficking in tissue engineering is approached by first considering the normal role of cell recirculation and trafficking within the adult organism. Most cells can be easily introduced into the body by intravenous injection or infusion. This procedure is particularly appropriate for cells that function within the circulation; for example, red blood cells (RBCs) and lymphocytes. The first blood transfusions into humans were performed by Jean-Baptiste Denis, a French physician, in 1667. This early appearance of transfusion is startling, since the circulatory system was described by William Harvey only a few decades earlier, in 1628.
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Kung, Edward, and Alan J. Lesser. "Preparation and Studies of Polymer/Polymer Composites Prepared Using Supercritical Carbon Dioxide." In Green Chemistry Using Liquid and Supercritical Carbon Dioxide. Oxford University Press, 2004. http://dx.doi.org/10.1093/oso/9780195154832.003.0015.

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Because of the recent emphasis on green chemistry, there has been interest in using supercritical carbon dioxide (sc CO2) as a solvent or swelling agent to aid in polymer processing and polymer chemistry (Adamsky and Beckman, 1994; DeSimone et al., 1992; Hayes and McCarthy, 1998; Kung et al., 1998; Mistele et al., 1996; Romack et al., 1995; Watkins and McCarthy, 1995). Supercritical CO2 is a very weak solvent for most polymers (some fluoropolymers and silicones are exceptions); however, it swells most polymers and dissolves many small molecules (Berens and Huvard, 1989). The density of a supercritical fluid (SCF), and thus its solvent strength, is continuously tunable as a function of temperature or pressure up to liquidlike values. This provides the ability to control the degree of swelling in a polymer as well as the partitioning of small-molecule penetrants between a swollen polymer phase and the fluid phase. The low viscosity and zero surface tension of SCFs allows for fast transfer of penetrants into swollen polymers. The lack of vapor/liquid coexistance in SCFs allows the sorption to proceed without the penetrant solution wetting the substrate surface. Since most of the common SCFs are gases at ambient conditions, the removal and recovery of the solvent from the final product is extremely facile. All of these factors aid in a new method we have developed for preparing polymer composites. This method involves the absorption of a supercritical solution of a monomer, initiator, and CO2 into a solid polymer substrate and subsequent thermal polymerization of the monomer to yield a composite system of the two polymers. We have focused on radical polymerization of styrene within various solid semicrystalline polymer substrates (Hayes and McCarthy, 1998; Kung et al., 1998; Watkins and McCarthy, 1995). Table 10.1 lists a number of systems that we have studied to make polymer–polystyrene composites. The method for preparing the polymer blends listed in Table 10.1 involves the soaking of the substrate polymer in a supercritical solution of styrene, a thermal radical initiator, and CO2 at a temperature where the initiator decomposes very slowly (half-lives of hundreds of hours).
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Conference papers on the topic "New Viscosity Function"

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Rahman, A. S. M. Asifur, and Rafiqul A. Tarefder. "Development of a New Dynamic Modulus Predictive Model Based on Binder Viscosity for the Superpave Mixtures of New Mexico." In ASME 2016 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/imece2016-66317.

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The newly developed mechanistic-empirical pavement design method uses the dynamic modulus as one of the crucial input parameters for the asphalt pavement to be designed or analyzed. This study proposes a new regression-based predictive model to estimate dynamic modulus of asphalt concrete from the viscosity of the asphalt binder used in the asphalt-aggregate mixture. Other parameters related to the aggregate gradation, such as, fineness modulus, and uniformity coefficient and the parameters related to the mixture volumetric are also incorporated in this model. A total of 21 asphalt concrete mi
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Sun, Liangfeng, Arthur M. Sterling, Su-Seng Pang, and Michael A. Stubblefield. "Rheological Analysis of Curing Process of Epoxy Prepreg Used as Composite Pipe Joints." In ASME 2002 Engineering Technology Conference on Energy. ASMEDC, 2002. http://dx.doi.org/10.1115/etce2002/ot-29154.

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The rheological properties of curing process of epoxy prepreg were measured by Bohlin Rheometer. The variations of storage modulus, loss modulus and viscosity are monitored vs. the cure time and temperature. Viscosity profiles were described by different models. Except the first order viscosity models, new viscosity models based on Boltzmann function were proposed. In the new models, a parameter called critical time was introduced. Critical time is a function of temperature and also meets an Arrhenius law. The activation energy calculated by critical time closes to that obtained by initial vis
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Hyun, Sinjae, and Clement Kleinstreuer. "RBC Distribution in Stenosed Arterial Geometries Using Hematocrit Dependent Viscosity Model (HDVM)." In ASME 2004 International Mechanical Engineering Congress and Exposition. ASMEDC, 2004. http://dx.doi.org/10.1115/imece2004-59948.

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Human blood is a concentrated suspension of mainly red blood cells (RBCs) in plasma and exhibits some non-Newtonian behavior at low shear rates. Traditionally, computational simulations have employed non-Newtonian viscosity models, such as the power-law, Casson, or Quemada model, which are a function of the local shear rate and depend on two to four constant parameters, including the hematocrit. In this study the non-Newtonian behavior of the blood viscosity is expressed as a function of the hematocrit. Specifically, a convection-diffusion equation for the RBCs has been solved, integrated into
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Sagdeev, D., Ch Isyanov, I. Gabitov, et al. "TEMPERATURE EFFECT ON DENSITY AND VISCOSITY OF LIGHT, MEDIUM, AND HEAVY CRUDE OILS." In RENEWABLE ENERGY: CHALLENGES AND PROSPECTS. ALEF, 2020. http://dx.doi.org/10.33580/2313-5743-2020-8-1-177-206.

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The density and dynamic viscosity of four light, medium, and heavy (extra-viscous) crude oil samples from Tatarstan Oil Field (Russian Federation) have been measured over the temperature range from (293 to 473) K (for density) and from (293 to 348) K (for viscosity) at atmospheric pressure (101 kPa). The density measurements were made using a new densimeter based on hydrostatic weighing method. The viscosity measurements of the same crude oil samples were made us-ing Brookfield rotational viscometer (DV-II+PRO, LVD-II+PRO). The combined expanded uncertainty of the density, viscosity, atmospher
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Marquez, Richard, and Mauricio Gargaglione Prado. "Modelling Downhole Separation Efficiency Using a Stream Function Approach." In ASME 2009 28th International Conference on Ocean, Offshore and Arctic Engineering. ASMEDC, 2009. http://dx.doi.org/10.1115/omae2009-79763.

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A new technique for solving simultaneously the mass and momentum balance equations for a gas-liquid mixture is proposed in this paper. The technique is based on the vorticity-stream function approach, under a cylindrical coordinate system. Important variables such as slip velocity in the radial and vertical direction, characteristic of the bottomhole, gas and liquid flow rates, pressures, flow pattern, among others, are considered simultaneously in the solution of the problem. The two-phase model proposed in this work allows obtaining the liquid and gas velocities fields as well as the two-pha
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Li, Xueying, Jing Ren, and Hongde Jiang. "Algebraic Anisotropic Eddy-Viscosity Modeling for Application to Turbulent Film Cooling Flows." In ASME 2011 Turbo Expo: Turbine Technical Conference and Exposition. ASMEDC, 2011. http://dx.doi.org/10.1115/gt2011-45791.

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Under-predicting the spanwise spreading of film cooling is a big problem in the film cooling computation. This is mainly due to the incorrect simulation of the spanwise transport of the jet in crossflow by conventional isotropic eddy viscosity turbulent models. An improved algebraic anisotropic eddy viscosity method including both the influence of the wall and the strain of the mean flow field to the anisotropic ratio has been raised by the authors in the paper, referred to as Algebraic Anisotropic Eddy Viscosity (AAEV) method. An equation derived from the algebraic Reynolds stress transport e
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Prichard, Reid, Wayne Strasser, and Thomas Eldredge. "Cavitation Number As a Function of Disk Cavitator Radius: A Numerical Analysis of Natural Supercavitation." In ASME 2019 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/imece2019-12492.

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Abstract Due to the greater viscosity and density of water compared to air, the maximum speed of underwater travel is severely limited compared to other methods of transportation. However, a technology called supercavitation — which uses a disk-shaped cavitator to envelop a vehicle in a bubble of steam — promises to greatly decrease skin friction drag. While a large cavitator enables the occurrence of supercavitation at low velocities, it adds substantial drag at higher speeds. Based on CFD results, we propose a new relationship between drag coefficient and disk cavitator radius, and we predic
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Takahashi, Tsutomu, and Masataka Shirakashi. "Evaluation of Planar Elongation Viscosity for Low Viscous Fluids Using Two-Dimensional Converging Channel Piston Technique." In ASME/JSME 2007 5th Joint Fluids Engineering Conference. ASMEDC, 2007. http://dx.doi.org/10.1115/fedsm2007-37180.

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The planar elongation viscosity is one of the important properties on the processes for film formation and blow formation. In this study, a new technique to evaluate planar elongation viscosity for low viscous fluids is investigated. To generate the planar elongation flow, a rectangular cylinder piston with two-dimensional converging channel is pushed into a reservoir. The sample fluid is filled in the reservoir. The rectangular piston is inserted into the reservoir at a constant velocity by an electrical actuator. The fluid is pushed out through the two-dimensional converging channel in the p
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Amano, R. S., Takahiko Hasegawa, and Shaohua Shen. "A Study of the Development of an Analytical Wall Function for LES." In ASME 2014 4th Joint US-European Fluids Engineering Division Summer Meeting collocated with the ASME 2014 12th International Conference on Nanochannels, Microchannels, and Minichannels. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/fedsm2014-21191.

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In order to invent a new near-wall treatment for turbulence in Computational Fluid Dynamics (CFD) simulation, an Analytical Wall Function (AWF) has been studied and shown that it is possible to work accurately with Reynolds Averaged Navier-Stokes (RANS) Simulation even for complicated geometry such as impinging jet flow or separation and reattachment flow. One of the most common wall functions is the Standard Wall Function (SWF) which assumes log-law inside the boundary layer. However, there is a problem that SWF has been used for industrial applications even though it is difficult to analyze
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Williams, Logan T. "Methodology for the Evaluation of Gear Pump Performance." In BATH/ASME 2020 Symposium on Fluid Power and Motion Control. American Society of Mechanical Engineers, 2020. http://dx.doi.org/10.1115/fpmc2020-2763.

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Abstract Currently, most performance curves of gear pumps present volumetric efficiency as a function of one or more operating conditions. However, the nature of gear pumps is that volumetric efficiency is dependent on pump speed, pump pressure rise, and fluid viscosity. This dependency on multiple parameters impedes direct comparisons between pumps tested at disparate operating conditions or on different testbeds. A new method has been developed that formulates the volumetric efficiency as a function of a single parameter that captures pump speed, pressure, and fluid viscosity. The characteri
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