Academic literature on the topic 'Process fluids'

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Journal articles on the topic "Process fluids"

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Grzesik, Wit. "Media-assisted machining processes using nano-fluids. Part 2: Examples of the influence of nano-fluids on the cutting process." Mechanik, no. 3 (March 2021): 7–11. http://dx.doi.org/10.17814/mechanik.2021.3.5.

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Jegatheeswaran, Sinthuran, Farhad Ein-Mozaffari, and Jiangning Wu. "Laminar mixing of non-Newtonian fluids in static mixers: process intensification perspective." Reviews in Chemical Engineering 36, no. 3 (April 28, 2020): 423–36. http://dx.doi.org/10.1515/revce-2017-0104.

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AbstractStatic mixers are widely used in various industrial applications to intensify the laminar mixing of non-Newtonian fluids. Non-Newtonian fluids can be categorized into (1) time-independent, (2) time-dependent, and (3) viscoelastic fluids. Computational fluid dynamics studies on the laminar mixing of viscoelastic fluids are very limited due to the complexity in incorporating the multiple relaxation times and the associated stress tensor into the constitutive equations. This review paper provides recommendations for future research studies while summarizing the key research contributions in the field of non-Newtonian fluid mixing using static mixers. This review discusses the different experimental techniques employed such as electrical resistance tomography, magnetic resonance imaging, planar laser-induced fluorescence, and positron emission particle tracking. A comprehensive overview of the mixing fundamentals, fluid chaos, numerical characterization of fluid stretching, development of pressure drop correlations, and derivations of generalized Reynolds number is also provided in this review paper.
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Voelker, T., E. Blums, and S. Odenbach. "Separation Process in Magnetic Fluids." PAMM 1, no. 1 (March 2002): 321. http://dx.doi.org/10.1002/1617-7061(200203)1:1<321::aid-pamm321>3.0.co;2-v.

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Yin, Shao Hui, Zhi Qiang Xu, Hong Jie Duan, and Feng Jun Chen. "Effects of Magnetic Fluid on Machining Characteristics in Magnetic Field Assisted Polishing Process." Advanced Materials Research 797 (September 2013): 396–400. http://dx.doi.org/10.4028/www.scientific.net/amr.797.396.

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Magnetic characteristics of three magnetic polishing fluids such as magnetic fluid (MF), magnetorheological fluid (MRF), and magnetic compound fluid (MCF) under magnetic field are experimentally investigated and analyzed. Their magnetic cluster structures under action of magnet field are observed, and their magnetic cluster models are established. Magnetic flied assisted polishing experiments for tungsten carbide are developed used these three kinds of magnetic fluids, material removal and surface roughness are respectively measured. At last, the machining characteristic of three magnetic fluids are contrasted and discussed according to experimental results.
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Song, Peng Yun, and Ai Lin Ma. "The Concept and the Contents of Process Fluid Mechanics." Applied Mechanics and Materials 723 (January 2015): 194–97. http://dx.doi.org/10.4028/www.scientific.net/amm.723.194.

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Fluid mechanics is the mechanics of fluids, concerned with the motion of fluids and the forces associated with that motion. A Process is a series of operations which produce a physical or chemical change or biotransformation in the nature of a material. Process industries are those industries in which processes have been taken placed. Process engineering stems from chemical engineering, having much wider ranges and much deep content, and focusing on the design, operation and maintenance of process in process industries. Process fluid mechanics may be interpreted as the fluid mechanics related to process industries and/or process engineering, or as the fluid mechanics used for the process industries or process engineering, or as the knowledge of fluid mechanics should be mastered by the process engineers and process researchers or process scientists. Process fluid mechanics can be divided into physical process fluid mechanics, chemical process fluid mechanics, and biological process fluid mechanics.
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Borůvková, K., T. Bakalova, L. Voleský, and P. Louda. "The Influence of Nanoadditives on the Biological Properties and Chemical Composition of Process Fluids." Advances in Materials Science 15, no. 4 (December 1, 2015): 59–66. http://dx.doi.org/10.1515/adms-2015-0023.

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Abstract In this study process fluids were tested after the addition of nanoparticles. Cooling and lubricating process fluids are used in machining to reduce wear on tools, to increase machine performance and to improve product quality. The use of process fluids leads to their pollution and contamination. Nanoparticles were added to the process fluids in order to increase their antibacterial activity. The selected nanoparticles were nanoparticles of metallic silver. The process fluids were modified by the addition of silver nitrate and ascorbic acid. Reduction of silver nanoparticles in the volume of the fluid was achieved using UV. The modified fluids were tested for their cytotoxicity and changes in chemical composition. The cytotoxicity of process fluids was tested for the purpose of verifying whether the process fluids, which are in direct contact with the skin of the operator, affect the health of the operator. The cytotoxicity of the process fluids was tested on human fibroblast cells. Fibroblasts are the basic cells of fibrous tissue. The cytotoxicity was tested by measuring the cell viability and using XTT. Analysis of chemical composition was performed for the purpose of determining the individual substances in the process fluids and their chemical stability. Qualitative analysis of the process fluids was performed using gas chromatography mass spectrometry (GC - MS).
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Yasuda, S., H. Yonetsu, and T. Tanahashi. "Separation process of two-phase fluids." Journal of Visualization 8, no. 1 (March 2005): 5. http://dx.doi.org/10.1007/bf03181594.

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Singaravel, Balasubramaniyan, K. Chandra Shekar, G. Gowtham Reddy, and S. Deva Prasad. "Performance Analysis of Vegetable Oil as Dielectric Fluid in Electric Discharge Machining Process of Inconel 800." Materials Science Forum 978 (February 2020): 77–83. http://dx.doi.org/10.4028/www.scientific.net/msf.978.77.

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Electric discharge machining (EDM) is a spark erosion process widely used to machine difficult-to-cut material by conventional machining method. The major elements of EDM process are work piece, electrode and dielectric fluid. In this work, an attempt is made to investigate vegetable oil as dielectric fluid and their process performance for machining of Inconel 800 in EDM process. The effects of dielectric fluids are investigated with vegetable oils and conventional dielectric fluid namely Sunflower oil and Kerosene respectively. The important input variables considered in this study are pulse on/off time, current and voltage. Three levels of energy setting are employed for machining with selected dielectric fluids. The output parameters are considered tool wear rate (TWR), material removal rate (MRR) and surface roughness (SR). In the present study effect of vegetable oil as dielectric fluid and the results are compared with conventional dielectric fluid. The result revealed that vegetable oils are successfully employed as dielectric fluids and they are having similar dielectric properties and erosion mechanism compared to conventional dielectric fluid. This proposed vegetable oil based dielectric fluids showed higher MRR than conventional dielectric. It shows vegetable oils have similar dielectric properties compared with conventional dielectric and it is possible to replace as dielectric fluid in EDM process.
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Zhou, Ming, P. Jia, and M. Li. "Study on the Machinability of Glass Soda-Lime in Diamond Cutting Process." Materials Science Forum 626-627 (August 2009): 47–52. http://dx.doi.org/10.4028/www.scientific.net/msf.626-627.47.

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Glass possesses poor machinability in diamond cutting due to its high hardness and high brittleness. In order to investigate the effect of cutting fluids on the machinability of glass, this paper first conducted soda-lime indentation experiment, and then examined the resulting indentation by optical microscope. Based on this, turning tests were carried out to evaluate the influence of the cutting fluid properties on the machinability of glass. Boric acid solutions were selected as cutting fluids in the tests. The surface processing quality of soda-lime was assessed based on the observations of the micro- morphology of the turned surfaces utilizing AFM. Experimental results indicated that compared with the process without cutting fluid action, the machinability of glass soda-lime can be improved by using boric acid solution as the cutting fluid.
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Wu, Chenjun, Qingxu Zhang, Xinpeng Fan, Yihu Song, and Qiang Zheng. "Magnetorheological elastomer peristaltic fluid conveying system for non-Newtonian fluids with an analogic moisture loss process." Journal of Intelligent Material Systems and Structures 30, no. 13 (June 4, 2019): 2013–23. http://dx.doi.org/10.1177/1045389x19853625.

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A magnetorheological elastomer peristaltic fluid conveying system consisting of a magnetorheological elastomer tube and two electromagnets implements controlled movements via an external magnetic field with varying periods of driving voltages to convey non-Newtonian fluids over a certain time period. The effects of backpressure at the outlet of the magnetorheological elastomer peristaltic fluid conveying system, the viscosity of fluids at zero shear rate, and moisture loss along the longitudinal direction on net pumped volume are investigated systematically. The results demonstrate that the net pumped volume declines linearly with backpressure under all driving voltage periods. An improvement of the viscosity of fluids at zero shear rate allows at first the decrease, then the increase, and finally the decrease of the net pumped volume. Moisture loss plays a second role in the net pumped volume and the change of the fluid viscosity profile. The compression of the magnetorheological elastomer tube, the maximum shear stress, and the maximum von Mises stress in the magnetorheological elastomer peristaltic fluid conveying system are investigated to evaluate the magneto-fluid-structure interaction. This research offers a new approach to biological fluid conveying with an analogic moisture loss process.
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Dissertations / Theses on the topic "Process fluids"

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Yerlett, T. K. "Enthalpies of fluids and fluid mixtures." Thesis, University of Bristol, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.355339.

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Schwarz, Cara Elsbeth. "The phase equilibrium of alkanes and supercritical fluids." Thesis, Stellenbosch : University of Stellenbosch, 2001. http://hdl.handle.net/10019.1/2532.

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Thesis (MScEng (Process Engineering))--University of Stellenbosch, 2001.
Current methods for wax fractionation result in products with large polydispersity, and due to the high temperatures required, thermal degradation of the wax is often incurred. The need for an alternative process thus exists. The purpose of this project is to investigate the technical viability of supercritical fluid processing as an alternative wax fractionation technology. The main aims of this project are to select a suitable supercritical solvent, to conduct binary phase equilibrium experiments, to determine if the process is technically viable and to investigate the ability of various equations of state to correlate the phase equilibrium data. Based on limited data from the literature, propane and a propane rich LPG (Liquefied Petroleum Gas) were selected as suitable solvents. Literature data for propane and high molecular weight alkanes is scares and incomplete, thus necessitating experimental measurements. A phase equilibrium cell was designed, constructed and commissioned. The cell was designed for pressures up to 500 bar and temperatures to 200 oC, and with the aid of an endoscope, the phase transitions were detected visually. The measurements correspond well to literature values from reliable research groups. Phase equilibrium data sets for propane with nC32, nC36, nC38, nC40, nC44, nC46, nC54 and nC60 as well as LP Gas with nC36 were measured. At temperatures just above the melting point of the alkanes, the phase transition pressures can be considered to be moderate, which will positively impact the economics of the process. The phase transition pressure increases with increasing carbon number, the relationship being found to be linear when the pressure is plotted as a function of carbon number at constant mass fractions and temperature. The increase in phase transition pressure with increasing carbon number indicates that the solvent will be able to selectively fractionate the wax. At higher temperatures the gradient of the line is larger and may thus lead to improved selectivity. The higher temperatures will also lead to better mass transfer. The linear relationship indicates that limited extrapolation to higher carbon numbers may be possible. However, this needs to be verified experimentally. The inability to measure the critical point and vapour pressure curves of the higher molecular weight normal alkanes, as well as the inability of cubic equations of state to predict liquid volumes and to capture the chain specific effects such as internal rotations, results in cubic equations of state requiring large interaction parameters to fit the data. The alternative, statistical mechanical equations of state, have difficulty in predicting the critical point of the solvent correctly and thus overpredicts the mixture critical point, yet require smaller interaction parameters to fit the data. Further work is required to improve the predictability of these non-cubic equations of state. This project has proven that wax fractionation by supercritical extraction with propane is technically feasible.
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Tao, Zhengsu. "Characteristics of the transparent fluid assisted in-process measurement method /." View Abstract or Full-Text, 2003. http://library.ust.hk/cgi/db/thesis.pl?MECH%202003%20TAO.

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Thesis (Ph. D.)--Hong Kong University of Science and Technology, 2003.
Includes bibliographical references (leaves 106-114). Also available in electronic version. Access restricted to campus users.
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Schwarz, Cara Elsbeth. "The processing of wax and wax additives with supercritical fluids." Thesis, Link to the online version, 2005. http://hdl.handle.net/10019/1195.

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West, Kevin Neal. "CO₂ -expanded liquids as environmentally benign process solvents." Diss., Georgia Institute of Technology, 2001. http://hdl.handle.net/1853/9367.

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Li, Bo. "Detection of particles and estimation of size distribution in process fluids /." Online version of thesis, 1992. http://hdl.handle.net/1850/11258.

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Al, Sofyani Sharaf. "Analytical Modeling and Experimental Analysis of Metalworking Fluids in theMilling Process." University of Toledo / OhioLINK, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1494853268000644.

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Ohmori, Tsutomu. "The Study on Diffusion Process of Species on Reaction in Supercritical Fluids." 京都大学 (Kyoto University), 2003. http://hdl.handle.net/2433/149090.

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Rutnakornpituk, Metha. "Synthesis of Silicone Magnetic Fluids for Use in Eye Surgery." Diss., Virginia Tech, 2002. http://hdl.handle.net/10919/27723.

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Stable suspensions of superparamagnetic cobalt nanoparticles have been prepared in poly(dimethysiloxane) (PDMS) carrier fluids in the presence of poly[dimethylsiloxane-b-(3-cyanopropyl)methylsiloxane-b-dimethylsiloxane] (PDMS-PCPMS-PDMS) triblock copolymers as steric stabilizers. A series of the polysiloxane triblock copolymers with systematically varied molecular weights were prepared via anionic polymerization using LiOH as an initiator. These copolymers formed micelles in toluene or poly(dimethylsiloxane) (PDMS) carrier fluids and served as â nanoreactorsâ for thermal decomposition of the Co2(CO)8 precursor. The nitrile groups on the PCPMS central blocks are thought to coordinate onto the particle surface, while the PDMS endblocks protrude into the reaction medium to provide steric stability. The particle size can be controlled by adjusting the cobalt to copolymer ratio. Ordered self-assemblies of these cobalt nanoparticles are observed when the dispersions are cast from toluene. Electron diffraction spectroscopy reveals that the cobalt nanoparticles have fcc crystal structures. TEM shows non-aggregated cobalt nanoparticles with narrow size distributions, which are evenly surrounded with copolymer sheaths. However, some degree of surface oxidation was observed over time, resulting in a decrease in magnetic susceptibility. Novel poly[dimethylsiloxane-b-methyltriethoxysilylsiloxane-b-(3-cyanopropyl) methylsiloxane-b-methyltriethoxysilylsiloxane-b-dimethylsiloxane] (PDMS-PMTEOS-PCPMS-PMTEOS-PDMS) pentablock terpolymers were prepared. These terpolymers could fill the dual role both as steric stabilizers for preparing stable cobalt nanoparticle dispersions and precursors for the particle coating process. Silica films coated on the particles surfaces were employed to prevent the surface oxidation of the nanoparticles. Specific saturation magnetic measurement indicates that coating the nanoparticles with silica thin films can effectively inhibit the oxidation process.
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Tessaro, Elias Paulo. "Avaliação de processos oxidativos para o tratamento ambientalmente adequado de fluidos de corte." Universidade de São Paulo, 2008. http://www.teses.usp.br/teses/disponiveis/75/75132/tde-20062008-165020/.

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Durante o processo metalúrgico de usinagem de uma peça ocorre a geração de calor proveniente do atrito ferramenta/peça e cavaco/ferramenta. Para que ocorra uma menor geração de calor possibilitando o manuseio, bem como a minimização na deformação da peça, utilizam-se fluidos, que são soluções lubrificantes à base de óleos, água ou polímeros, podendo ser sintéticos ou não, diminuindo, assim, o coeficiente de atrito reduzindo-se a quantidade de calor gerado no processo. Há uma grande variedade de fluidos de corte disponíveis no mercado que são constituídos por diversos compostos como: aminas, compostos clorados e/ou aromáticos, glicóis, nitrosaminas além da presença de metais provenientes do processo de manufatura, portanto, sem tratamento, não podem ser lançados na rede de esgoto convencional. Atualmente não há um método de tratamento para os fluidos de corte nas indústrias. Nesse contexto, propõe-se um estudo sobre a viabilidade dos tipos de tratamento dos fluidos de corte para uma disposição adequada. Os processos de tratamento propostos neste trabalho compreendem hidrolise ácida e Processo Oxidativo Avançado (POA), mais especificamente, Sistema Fenton, além de propor um tratamento baseado na fotodegradação. A caracterização do fluido antes e após seu tratamento foi realizada por técnicas analíticas e espectrométricas. Os processos oxidativos mostraram-se satisfatórios para o tratamento dos efluentes, reduzindo os níveis de contaminantes aos permitidos pela legislação. O processo foto-Fenton mostrou-se mais eficiente que o processo Fenton na degradação de todos os parâmetros avaliados, incluindo BTEX e HPAs. Os processos de hidrólise ácida não apresentaram resultados satisfatórios, reduzindo apenas os metais aos níveis permitidos para descarte.
During the cutting process, part of the heat generation results from tool-part and chip-tool friction. So that it happens a smaller generation of heat making possible the handling, as well as minimization in the tool deformation, cutting fluids are used, that are the oils base, water or polymeric lubricating solutions, could be synthetic or no, decreasing the attrition coefficient being reduced the amount of heat generated in the process. There is a great variety of cutting fluids that are constituted for several composed as: amines, chlorinated and/or aromatic composed, glycols and nitrosamines besides the presence of metals proceeding of manufacture process, therefore, without a treatment, they cannot be discarded in the conventional sewerage system. At the moment there isn\'t a treatment method for the cut fluids in the industries. In that context, intends a study about the viability types of cutting fluids treatment for appropriate disposition. Treatment processes proposed in this work understand acid hydrolysis and Advanced Oxidative Process (AOP), more specifically, Fenton System, in addition proposing a treatment based on the photodegradation (photo-Fenton process). The characterization of fluid before and after treatment it was accomplished by analytical and spectrometry techniques. Oxidative processes were exposed satisfactory for cutting fluids treatment, reducing the levels of pollutants to the allowed by the legislation. Photo-Fenton process was shown more efficient than Fenton process in the oxidation of BTEX and PAHs. Acid hydrolysis processes didn\'t present satisfactory results, just reducing the metals at the levels allowed for discard.
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Books on the topic "Process fluids"

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Heat transfer fluids and systems for process and energy applications. New York: M. Dekker, 1985.

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Chhabra, R. P. Non-Newtonian flow in the process industries: Fundamentals and engineering applications. Oxford: Butterworth-Heinemann, 1999.

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Tulik, Mirela. Anatomiczne parametry przewodnictwa hydraulicznego drewna pni dębu szypułkowego (Quercus robur L.) a proces zamierania drzew: Anatomical parameters of hydraulic conductivity in pedunculate oak (Quercus robur L.) stema wood and the process of trees declining. Warszawa: Wydawnictwo SGGW, 2012.

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G, Bike Stacy, ed. Fluid mechanics for chemical engineers. Upper Saddle River, N.J: Prentice Hall PTR, 1999.

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Sadeghbeigi, Reza. Fluid catalytic cracking handbook. Houston, Tex: Gulf Pub. Co., 1995.

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Laine, Jouko. Calculation of process response with matrices. Lappeenranta: Lappeenranta University of Technology, 1985.

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W, Bernard John, ed. Computer control strategies for the fluid process industries. Research Triangle Park, N.C: Instrument Society of America, 1990.

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Oliemans, R. V. A. Computational Fluid Dynamics for the Petrochemical Process Industry. Dordrecht: Springer Netherlands, 1991.

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Oliemans, R. V. A., ed. Computational Fluid Dynamics for the Petrochemical Process Industry. Dordrecht: Springer Netherlands, 1991. http://dx.doi.org/10.1007/978-94-011-3632-7.

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Mory, Mathieu. Fluid mechanics for chemical engineering. London: ISTE, 2011.

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Book chapters on the topic "Process fluids"

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Timmerhaus, Klaus D., and Thomas M. Flynn. "Properties of Cryogenic Fluids." In Cryogenic Process Engineering, 13–38. Boston, MA: Springer US, 1989. http://dx.doi.org/10.1007/978-1-4684-8756-5_2.

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Toledo, Romeo T. "Flow of Fluids." In Fundamentals of Food Process Engineering, 160–231. Boston, MA: Springer US, 1993. http://dx.doi.org/10.1007/978-1-4615-7052-3_6.

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Toledo, Romeo T. "Flow of Fluids." In Fundamentals of Food Process Engineering, 160–231. Boston, MA: Springer US, 1999. http://dx.doi.org/10.1007/978-1-4615-7055-4_6.

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Kumar Das, Susanta, and Madhusweta Das. "Flow of Fluids in Food Processing." In Fundamentals and Operations in Food Process Engineering, 39–97. Boca Raton : Taylor & Francis, CRC Press, 2019.: CRC Press, 2019. http://dx.doi.org/10.1201/9780429058769-2.

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Golwalkar, Kiran. "Equipments/Accessories for Handling of Fluids." In Process Equipment Procurement in the Chemical and Related Industries, 39–53. Cham: Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-12078-2_4.

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Liščič, Bozidar, Rosa L. Simencio Otero, Luigi L. M. Albano, George E. Totten, and Lauralice C. F. Canale. "Chapter 24 | Nonlubricating Process Fluids: Steel Quenching Technology." In Fuels and Lubricants Handbook: Technology, Properties, Performance, and Testing, 2nd Edition, 977–1036. 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959: ASTM International, 2019. http://dx.doi.org/10.1520/mnl3720160012.

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Kopac, J., M. Sokovic, and K. Mijanovic. "Influences of New Cutting Fluids on the Tapping Process." In Advanced Manufacturing Systems and Technology, 153–60. Vienna: Springer Vienna, 1996. http://dx.doi.org/10.1007/978-3-7091-2678-3_16.

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Nose, T. "Time Evolution of the Structure Function in the Late Stage of the Phase Separation Process in Polymer Mixtures." In Space-Time Organization in Macromolecular Fluids, 40–50. Berlin, Heidelberg: Springer Berlin Heidelberg, 1989. http://dx.doi.org/10.1007/978-3-642-83948-1_5.

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Gallagher, P. M., M. P. Coffey, V. J. Krukonis, and N. Klasutis. "Gas Antisolvent Recrystallization: New Process To Recrystallize Compounds Insoluble in Supercritical Fluids." In ACS Symposium Series, 334–54. Washington, DC: American Chemical Society, 1989. http://dx.doi.org/10.1021/bk-1989-0406.ch022.

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Mittelman, Marc W., and David C. White. "The Role of Bacterial Biofilms in Contamination of Process Fluids by Biological Particulates." In Particles in Gases and Liquids 2, 33–50. Boston, MA: Springer US, 1990. http://dx.doi.org/10.1007/978-1-4899-3544-1_3.

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Conference papers on the topic "Process fluids"

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Strongin, Mikhail P. "Pump Mixing Process Calculations." In ASME 2009 Fluids Engineering Division Summer Meeting. ASMEDC, 2009. http://dx.doi.org/10.1115/fedsm2009-78395.

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The mixing of two or more liquids is very common in many industrial applications. In some cases the liquids set on the pump inlet. The mixing process of two fluids in a pump is investigated in the presented work. Different pump geometries have been studied with comparison of steady state and transient results. Turbulence closure model k-w has been used for simulations. The pump model consists of suction, impeller and discharge parts which were meshed and calculated together. This, for instance, naturally permits the effects of non-uniformity of velocity and liquids concentrations distribution on the impeller eye and on the inlet of the discharge segment to be taken into account. Commercial code Fluent 6.3.26 was used for CFD computations. A sliding mesh for transient calculations and the Multiple Reference Frame (MRF) model for steady state calculations were used with the total number of cells from four to eight million. The results show a significant change in the mixing uniformity coefficient γ, depending on where on the inlet the injected fluid is located. In the annular injection on the pump inlet, γ is close to 1 (an ideal mixture) on the outlet; whereas, γ is less than 0.9 for strong angular asymmetry injection on the pump inlet. The latter is not sufficient for some applications. Furthermore, the following transient effect is observed. Large oscillations of concentration and γ with the blade passing frequency takes place on the impeller section. However, the value of γ oscillations on the impeller – discharge interface is relatively small and fades very quickly when the distance from the impeller outlet exceeds two outlet diameters.
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Beasley, R. D., and S. F. Dear. "A Process Engineering Approach to Drilling Fluids Management." In SPE Annual Technical Conference and Exhibition. Society of Petroleum Engineers, 1989. http://dx.doi.org/10.2118/spe-19532-ms.

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Akafuah, Nelson K., Abraham J. Salazar, and Kozo Saito. "Infrared Visualization of Automotive Paint Spray Transfer Process." In ASME 2009 Fluids Engineering Division Summer Meeting. ASMEDC, 2009. http://dx.doi.org/10.1115/fedsm2009-78033.

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An Infrared thermography based visualization technique for automotive paint spray is presented. Two common automotive paint applicators were studied using this technique and the results presented. The paint applicators studied were high-speed rotary bell atomizer and low pressure air atomizer. The technique uses a uniformly heated blackbody emitter as a background. The emitted infrared energy from the background passing through the spray is attenuated by the droplets in the spray. The attenuated intensity is captured by an infrared camera, to form a two-Dimensional image of the spray flow field. From the acquired intensity image, the entire spray flow field structure is visualized and the result discussed.
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He, Pu, Li Chen, Yu-Tong Mu, and Wen-Quan Tao. "PORE-SCALE SIMULATION OF ICE MELTING PROCESS IN POROUS MEDIA." In Second Thermal and Fluids Engineering Conference. Connecticut: Begellhouse, 2017. http://dx.doi.org/10.1615/tfec2017.prm.017991.

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Bell, Kenneth J. "Heat Exchanger Design for the Process Industries." In ASME 2004 Heat Transfer/Fluids Engineering Summer Conference. ASMEDC, 2004. http://dx.doi.org/10.1115/ht-fed2004-56910.

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The design process for heat exchangers in the process industries and for similar applications in the power and large-scale environmental control industries is described. Because of the variety of substances (frequently multicomponent, of variable and uncertain composition, and changing phase) to be processed under wide ranges of temperatures, pressures, flow rates, chemical compatibility, and fouling propensity, these exchangers are almost always custom-designed and constructed. Many different exchanger configurations are commercially available to meet special conditions, with design procedures of varying degrees of reliability. A general design logic can be applied, with detailed procedures specific to the type of exchanger. The basis of the design process is first a careful and comprehensive specification of the range of conditions to be satisfied, and second, organized use of a fundamentally valid and extrapolatable rating method. The emphasis in choosing a design method is upon rational representation of the physical processes, rather than upon high accuracy. Finally, the resultant design must be vetted in detail by the designer and the process engineer for operability, flexibility, maintainability, and safety.
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6

Foust, Henry, Reda Bakeer, and Sergey Drakunov. "Determination of Time Optimal Diafiltration for an Ultrafiltration Process." In ASME 2005 Fluids Engineering Division Summer Meeting. ASMEDC, 2005. http://dx.doi.org/10.1115/fedsm2005-77224.

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An ultrafiltration process (UFP) associated with the Hanford Department of Energy facility separates sodium solution from radioactive solids, which are then individually immobilized. An oversight of the UFP design and operation has identified several areas to improve the capacity of the UFP. This paper presents the development of a time optimal controller for an ultrafiltration process (UFP). The current mode of operation is a form of diafiltration where feed rates into the UFP are matched with the permeate rates (permeate matching diafiltration). Another approach advocated in this paper is to allow the control parameters into the UFP to vary with time and is termed time optimal diafiltration. It will be shown that permeate matching diafiltration and time optimal diafiltration are equivalent in terms of dewatering times, but not in terms of feedback. An empirical model for optimal time was then developed.
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7

Splingaire, Lucas, Holly Korte, Udo Schnupf, Kazuhiro Manseki, Takashi Sugiura, and Saeid Vafaei. "PRODUCTION OF ANATASE TIO2 NANOCRYSTALS USING FREEZE-DRY PROCESS." In 5th Thermal and Fluids Engineering Conference (TFEC). Connecticut: Begellhouse, 2020. http://dx.doi.org/10.1615/tfec2020.sol.031819.

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8

Franklin, Randall, Jack Edwards, Richard Gould, Ruben Carbonell, and Yury Chernyak. "Numerical simulation of the rapid expansion of supercritical solutions process for depositing polymeric coating materials." In Fluids 2000 Conference and Exhibit. Reston, Virigina: American Institute of Aeronautics and Astronautics, 2000. http://dx.doi.org/10.2514/6.2000-2300.

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9

Sumitomo, Takashi, Junichiro Fukutomi, Toru Shigemitsu, Naoki Ishida, and Yoshio Yoshimura. "Study of Internal Flow and Emulsification Process in a Homogenizer." In ASME 2009 Fluids Engineering Division Summer Meeting. ASMEDC, 2009. http://dx.doi.org/10.1115/fedsm2009-78335.

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The pressure homogenizer is extensively used to emulsify, disperse the products in various industrial fields including: food, chemical, pharmaceutical and biotechnology. The homogenizer basically consists of a high-pressure plunger pump usually with triple plungers to minimize pressure fluctuations and a homogenizing valve with a narrow gap. The homogenizing valve consists of a valve, valve seat and impact ring. The homogenizer exerts effects, such as a shear, an impingement, and a cavitation to fluid momentarily. The relatively large polydisperse oil globules of a coarse oil-in-water emulsion are subdivided into a large number of smaller globules in a narrow size range by a homogenizer. However, the flow within the homogenizing valve is not clarified theoretically. Therefore the action of a high-pressure, radial-flow homogenizer in breaking up the internal phase of oil drops in a coarse emulsion was investigated theoretically and experimentally. If the flow pattern within the homogenizing valve could be solved, a more efficient and stabilized emulsification could be carried out. In this paper, the influence of shape modification of the homogenizing valve was investigated in the emulsification action. The experiments using a small homogenizer are conducted and the experimental results were compared with the numerical simulation results. In short, we compared the calculated flow pattern (velocity distributions, pressure distributions, shear stress) with the drop size distribution result obtained in the experiment, and investigated the relation between the flow and the emulsification action in the homogenizing valve. In this experiment, two valve types (Sharp type and Flat type) were applied. In the experiment, the pressure drop in the valve, the distance from a valve outlet to an impact ring and the parallel gap part length were changed. The flow patterns were investigated using a Computational Fluid Dynamic model of the flow in the homogenizing valve. Here, a k-ε turbulent model was used for the modeling of the flow in the homogenizing valve. The flow in the homogenizing valve was calculated as a two-dimensional axisymmetric flow. The purpose of this paper is to clarify the effects of differences in the shapes of valves on the results of emulsification through the above experiments and numerical simulations.
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Li, Yong Bing, Zhong Qin Lin, Li Li, and Guan Long Chen. "Numerical Analysis of Transport Phenomena in Resistance Spot Welding Process." In ASME 2009 Fluids Engineering Division Summer Meeting. ASMEDC, 2009. http://dx.doi.org/10.1115/fedsm2009-78210.

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Resistance Spot Welding (RSW) is a very complicated process involving electro-magnetic, thermal, fluid flow, mechanical and metallurgical variables. Since weld nugget area is close and unobservable with experimental means, numerical methods are mainly used to reveal the nugget formation mechanism. Traditional RSW models focus on the electro-thermal behaviors in the nugget, and do not have the ability to model mass transport caused by induced magnetic forces in the molten nugget. In this paper, a multi-physics model, which comprehensively considers the coupling of electric, magnetic, thermal and flow fields during RSW, temperature-dependent physical properties and phase transformation, is used to investigate the heat and mass transport laws in the weld nugget and to reveal the interaction of the heat and mass transports. Results show that the heat transport behaviors in the weld nugget, the profile of the nugget, and the thermal field evolution are significantly changed when the mass transport is considered. At the same time, a good agreement is also found between experimental and numerically calculated nugget sizes. As a result, when predicting crystal growth process, the effects of the mass transport should be considered in order to obtain a more accurate prediction results.
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Reports on the topic "Process fluids"

1

Cavestri, R. C., and D. L. Schooley. Compatibility of manufacturing process fluids with R-134a and polyolester lubricant. Final report. Office of Scientific and Technical Information (OSTI), July 1996. http://dx.doi.org/10.2172/273819.

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2

Pryfogle, Peter Albert. Comparison of Selective Culturing and Biochemical Techniques for Measuring Biological Activity in Geothermal Process Fluids. Office of Scientific and Technical Information (OSTI), September 2000. http://dx.doi.org/10.2172/911015.

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3

Cavestri, R. C. Compatibility of manufacturing process fluids with HFC refrigerants and ester lubricants. First draft of final report of part one and quarterly report of part two, January 3, 1994--November 30, 1994. Office of Scientific and Technical Information (OSTI), November 1994. http://dx.doi.org/10.2172/61694.

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4

Carter, S. D., D. N. Taulbee, T. L. Robl, and J. C. Hower. The development of an integrated multistage fluid bed retorting process. [Kentort II process]. Office of Scientific and Technical Information (OSTI), August 1992. http://dx.doi.org/10.2172/6869068.

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Carter, S., A. Vego, D. Taulbee, and J. Stehn. The development of an integrated multistage fluid bed retorting process. [KENTORT II process--50-lb/hr]. Office of Scientific and Technical Information (OSTI), January 1992. http://dx.doi.org/10.2172/5092907.

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Carter, S., J. Stehn, A. Vego, and D. Taulbee. The development of an integrated multistage fluid bed retorting process. [Kentort II process--50-lb/hr]. Office of Scientific and Technical Information (OSTI), May 1992. http://dx.doi.org/10.2172/7310245.

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7

Kestner, N. Theoretical studies of electrons and electron transfer processes in fluids. Office of Scientific and Technical Information (OSTI), January 1989. http://dx.doi.org/10.2172/7252887.

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8

Wyngaard, J. C., Mark Piper, and W. H. Snyder. Fluid-Modeling Studies of Convective Dispersion Processes. Fort Belvoir, VA: Defense Technical Information Center, September 1993. http://dx.doi.org/10.21236/ada351129.

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9

Fernando, H. J. Laboratory Simulation of Fluid Dynamical Process Related to Winter Arctic Leads. Fort Belvoir, VA: Defense Technical Information Center, September 1991. http://dx.doi.org/10.21236/ada252266.

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Oh, C. H. Alternate fluid to improve energy efficiency of supercritical water oxidation process. Office of Scientific and Technical Information (OSTI), March 1996. http://dx.doi.org/10.2172/236239.

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