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Journal articles on the topic 'Flow characterization'

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1

Guzmán, A. M., and C. H. Amon. "Dynamical flow characterization of transitional and chaotic regimes in converging–diverging channels." Journal of Fluid Mechanics 321 (August 25, 1996): 25–57. http://dx.doi.org/10.1017/s002211209600763x.

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Numerical investigation of laminar, transitional and chaotic flows in converging–diverging channels are performed by direct numerical simulations in the Reynolds number range 10 < Re < 850. The temporal flow evolution and the onset of turbulence are investigated by combining classical fluid dynamics representations with dynamical system flow characterizations. Modern dynamical system techniques such as timedelay reconstructions of pseudophase spaces, autocorrelation functions, fractal dimensions and Eulerian Lyapunov exponents are used for the dynamical flow characterization of laminar,
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2

Yeneroğlu, Mustafa. "On new characterization of inextensible flows of space-like curves in de Sitter space." Open Mathematics 14, no. 1 (2016): 946–54. http://dx.doi.org/10.1515/math-2016-0071.

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AbstractElastica and inextensible flows of curves play an important role in practical applications. In this paper, we construct a new characterization of inextensible flows by using elastica in space. The inextensible flow is completely determined for any space-like curve in de Sitter space $\mathbb{S}_{1}^{3}$. Finally, we give some characterizations for curvatures of a space-like curve in de Sitter space $\mathbb{S}_{1}^{3}$.
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3

Nikolić, Marija, and Michel Bierlaire. "Pedestrian-oriented Flow Characterization." Transportation Research Procedia 2 (2014): 359–66. http://dx.doi.org/10.1016/j.trpro.2014.09.032.

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4

Amirabdollahian, Mahsa, and Bithin Datta. "Reliability Evaluation of Groundwater Contamination Source Characterization under Uncertain Flow Field." International Journal of Environmental Science and Development 6, no. 7 (2015): 512–18. http://dx.doi.org/10.7763/ijesd.2015.v6.647.

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5

Rubiolo, Pablo R., and Michael Y. Young. "ICONE15-10711 CHARACTERIZATION OF UNSTEADY CORE FLOW PATTERNS THROUGH NOISE ANALYSIS TECHNIQUES." Proceedings of the International Conference on Nuclear Engineering (ICONE) 2007.15 (2007): _ICONE1510. http://dx.doi.org/10.1299/jsmeicone.2007.15._icone1510_382.

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6

Zhao, Yiding, and Yao Shi. "Characterization of Flow Separation around Inline Cylinders within Oscillatory Flow." Shock and Vibration 2018 (October 15, 2018): 1–12. http://dx.doi.org/10.1155/2018/7569432.

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This paper has examined the effects of Reynolds number (Re), Keulegan–Carpenter number (KC), and gap ratio on flow separation around a cylinder array by PIV method in experiment. The vortex shedding in such situation occurs each half period of the oscillatory motion from the observation. No matter how many cylinders, KC is the key dominant parameter under low Re that has a great impact on the flow regime and flow motion in oscillatory flows. There is an influence area of vortex shedding around the cylinder. When two inline cylinders are in the flow, smaller gap ratio may extend the influence a
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7

Schimpf, M. E., and M. P. Petteys. "Characterization of humic materials by flow field-flow fractionation." Colloids and Surfaces A: Physicochemical and Engineering Aspects 120, no. 1-3 (1997): 87–100. http://dx.doi.org/10.1016/s0927-7757(96)03679-5.

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8

Deshmukh, Sharief, Nasser Bin Turki, and Hana Alsodais. "Characterizations of Trivial Ricci Solitons." Advances in Mathematical Physics 2020 (April 10, 2020): 1–6. http://dx.doi.org/10.1155/2020/9826570.

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Finding characterizations of trivial solitons is an important problem in geometry of Ricci solitons. In this paper, we find several characterizations of a trivial Ricci soliton. First, on a complete shrinking Ricci soliton, we show that the scalar curvature satisfying a certain inequality gives a characterization of a trivial Ricci soliton. Then, it is shown that the potential field having geodesic flow and length of potential field satisfying certain inequality gives another characterization of a trivial Ricci soliton. Finally, we show that the potential field of constant length satisfying an
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9

Nejad, A. S., S. P. Vanka, S. C. Favaloro, M. Samimy, and C. Langenfeld. "Application of Laser Velocimetry for Characterization of Confined Swirling Flow." Journal of Engineering for Gas Turbines and Power 111, no. 1 (1989): 36–45. http://dx.doi.org/10.1115/1.3240225.

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A two-component LDV was used in a cold flow dump combustor model to obtain detailed mean and turbulence data for both swirling and nonswirling inlet flows. Large samples were collected to resolve the second and third-order products of turbulent fluctuations with good accuracy. Particle interarrival time weighting was used to remove velocity bias from the data. The swirling flows, with and without vortex breakdown, exhibited significantly different mean flow and turbulent field behavior. A numerical scheme with the k–ε closure model was used to predict the flow fields. Comparison of the numeric
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10

Frede, Timothy Aljoscha, Moritz Greive, and Norbert Kockmann. "Measuring Kinetics in Flow Using Isoperibolic Flow Calorimetry." Reactions 3, no. 4 (2022): 525–36. http://dx.doi.org/10.3390/reactions3040035.

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Continuous flow calorimeters are a promising tool in process development and safety engineering, particularly for flow chemistry applications. An isoperibolic flow calorimeter is presented for the characterization of exothermic reactions. The calorimeter is adapted to commercially available plate microreactors made of glass and uses Seebeck elements to quantify the heat of reaction. For automation of calibration procedures and calorimetric measurements, the device is connected to a lab automation system. Reaction enthalpy of exothermic reactions is determined via an energy balance of the entir
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11

LIU, Pan-Pan, Can QUAN, Hong-Mei LI, and Jun-Su JIN. "Characterization of Nanoparticle Diameter by Asymmetrical Flow Field-Flow Fractionation." CHINESE JOURNAL OF ANALYTICAL CHEMISTRY (CHINESE VERSION) 41, no. 7 (2013): 1063. http://dx.doi.org/10.3724/sp.j.1096.2013.21224.

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12

Adams, Kurt L., and Ludwig Rebenfeld. "In-Plane Flow of Fluids in Fabrics: Structure/Flow Characterization." Textile Research Journal 57, no. 11 (1987): 647–54. http://dx.doi.org/10.1177/004051758705701104.

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13

van der Merwe, Werner, and Willie Nicol. "Characterization of Multiple Flow Morphologies within the Trickle Flow Regime." Industrial & Engineering Chemistry Research 44, no. 25 (2005): 9446–50. http://dx.doi.org/10.1021/ie050216f.

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14

Kendoush, Abdullah Abbas, and Salah A. W. Al-Khatab. "Experiments on flow characterization in vertical downward two-phase flow." Experimental Thermal and Fluid Science 9, no. 1 (1994): 34–38. http://dx.doi.org/10.1016/0894-1777(94)90005-1.

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15

Gecim, Gozde, and Ertugrul Erkoc. "Gas Flow Hydrodynamics in Vortex Mixers: Flow Visualization and PIV Flow Field Characterization." Industrial & Engineering Chemistry Research 60, no. 15 (2021): 5674–87. http://dx.doi.org/10.1021/acs.iecr.1c00522.

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16

Dhaygude, Vinod, Anita Soós, Réka Juhász, and László Somogyi. "Characterization of coconut oil flow behavior." Progress in Agricultural Engineering Sciences 14, s1 (2018): 57–67. http://dx.doi.org/10.1556/446.14.2018.s1.6.

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Blending is widely used for modification of the physicochemical properties of fats to enhance their commercial applications. This paper studied the flow behavior of coconut oil (NHCO) under variation in the temperature and proportion of fully hydrogenated coconut oil (FHCO). The oscillatory results showed that there is a change in the linear viscoelastic region, storage (G') and loss (G'') moduli with increasing proportion of FHCO in NHCO. In rotational tests, the blends showed shearthinning behavior. The viscosity of oils and their blends were investigated at different temperatures. The Hersc
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17

Cheng, Ziwei, Juan H. Leal, Carrie E. Hartford, et al. "Flow behavior characterization of biomass Feedstocks." Powder Technology 387 (July 2021): 156–80. http://dx.doi.org/10.1016/j.powtec.2021.04.004.

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18

Cui, Heng, Yang Liu, and Dongxia Li. "Fluid Flow Characterization in Asymmetric Tundish." ISIJ International 55, no. 12 (2015): 2604–8. http://dx.doi.org/10.2355/isijinternational.isijint-2015-409.

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19

Khan, Daud, Zawar Hussain Khan, Waheed Imran, Khurram Shehzad Khattak, and Thomas Aaron Gulliver. "Macroscopic flow characterization at T-junctions." Transportation Research Interdisciplinary Perspectives 14 (June 2022): 100591. http://dx.doi.org/10.1016/j.trip.2022.100591.

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20

Takahashi, Haruka, Shizuka Bando, Kosuke Oiwa, Akio Nozawa, Tomoharu Ishikawa, and Minoru Mitsui. "Cognitive Characterization of Air-flow Stimulus." IEEJ Transactions on Electronics, Information and Systems 137, no. 7 (2017): 898–903. http://dx.doi.org/10.1541/ieejeiss.137.898.

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21

Aumelas, V., Y. Lecoffre, G. Maj, and J. P. Franc. "Micro-bubbles seeding for flow characterization." IOP Conference Series: Earth and Environmental Science 49 (November 2016): 062005. http://dx.doi.org/10.1088/1755-1315/49/6/062005.

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22

Philip, Beverly K., and James H. Philip. "Characterization of Flow in Intravenous Catheters." IEEE Transactions on Biomedical Engineering BME-33, no. 5 (1986): 529–31. http://dx.doi.org/10.1109/tbme.1986.325743.

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23

Tao, Ran, Yakang Jin, Xiang Gao, and Zhigang Li. "Flow characterization in converging-diverging microchannels." Physics of Fluids 30, no. 11 (2018): 112004. http://dx.doi.org/10.1063/1.5048322.

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24

Petersen, Timothy W., C. Brent Harrison, Daniel N. Horner, and Ger van den Engh. "Flow cytometric characterization of marine microbes." Methods 57, no. 3 (2012): 350–58. http://dx.doi.org/10.1016/j.ymeth.2012.07.001.

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25

Wright, Roger N., Peter M. Hale, and Jeremy Vosburgh. "Rapid Flow Stress Characterization of Steel." Journal of Materials Engineering and Performance 18, no. 7 (2009): 985–89. http://dx.doi.org/10.1007/s11665-008-9328-z.

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26

Li, Weichang, Max Deffenbaugh, and Mohamed Noui-Mehidi. "Ultrasonic tomography for multiphase flow characterization." Journal of the Acoustical Society of America 141, no. 5 (2017): 3917. http://dx.doi.org/10.1121/1.4988848.

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27

Chicharro, R., A. Vazquez, and R. Manasseh. "Characterization of patterns in rimming flow." Experimental Thermal and Fluid Science 35, no. 6 (2011): 1184–92. http://dx.doi.org/10.1016/j.expthermflusci.2011.04.005.

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28

Iftikhar, Amir, Zawar H. Khan, T. Aaron Gulliver, et al. "Macroscopic Traffic Flow Characterization at Bottlenecks." Civil Engineering Journal 6, no. 7 (2020): 1227–42. http://dx.doi.org/10.28991/cej-2020-03091543.

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Traffic congestion is a significant issue in urban areas. Realistic traffic flow models are crucial for understanding and mitigating congestion. Congestion occurs at bottlenecks where large changes in density occur. In this paper, a traffic flow model is proposed which characterizes traffic at the egress and ingress to bottlenecks. This model is based on driver response which includes driver reaction and traffic stimuli. Driver reaction is based on time headway and driver behavior which can be classified as sluggish, typical or aggressive. Traffic stimuli are affected by the transition width a
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29

YANG, C., T. N. WONG, Y. L. LEU, K. T. OOI, and J. C. CHAI. "CHARACTERIZATION OF ELECTROOSMOTIC FLOW IN MICROCHANNELS." International Journal of Computational Engineering Science 04, no. 02 (2003): 273–76. http://dx.doi.org/10.1142/s146587630300106x.

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30

Pal, Rajinder, and Jacob Masliyah. "Flow characterization of a flotation column." Canadian Journal of Chemical Engineering 67, no. 6 (1989): 916–23. http://dx.doi.org/10.1002/cjce.5450670608.

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31

TAKAHASHI, HARUKA, SHIZUKA BANDO, KOSUKE OIWA, AKIO NOZAWA, TOMOHARU ISHIKAWA, and MINORU MITSUI. "Cognitive Characterization of Air-Flow Stimulus." Electronics and Communications in Japan 101, no. 3 (2018): 58–65. http://dx.doi.org/10.1002/ecj.12037.

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32

Lehnert, Bruce E., Yolanda E. Valdez, David A. Fillak, John A. Steinkamp, and Carleton C. Stewart. "Flow Cytometric Characterization of Alveolar Macrophages." Journal of Leukocyte Biology 39, no. 3 (1986): 285–98. http://dx.doi.org/10.1002/jlb.39.3.285.

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33

Neuwirth, M., K. Mester, M. Weiss, and E. Bruder. "Material characterization in flexible flow splitting." Materialwissenschaft und Werkstofftechnik 48, no. 1 (2017): 53–60. http://dx.doi.org/10.1002/mawe.201600734.

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34

Asif, Mohammad. "Flow Dynamic Characterization of Cylindrical Particles." Particle & Particle Systems Characterization 26, no. 4 (2009): 210–19. http://dx.doi.org/10.1002/ppsc.200700025.

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35

Coleman, S. E., and V. I. Nikora. "Fluvial dunes: initiation, characterization, flow structure." Earth Surface Processes and Landforms 36, no. 1 (2010): 39–57. http://dx.doi.org/10.1002/esp.2096.

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36

Monni, Grazia, Mario De Salve, Bruno Panella, and Carlo Randaccio. "Electrical Capacitance Probe Characterization in Vertical Annular Two-Phase Flow." Science and Technology of Nuclear Installations 2013 (2013): 1–12. http://dx.doi.org/10.1155/2013/568287.

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The paper presents the experimental analysis and the characterization of an electrical capacitance probe (ECP) that has been developed at the SIET Italian Company, for the measurement of two-phase flow parameters during the experimental simulation of nuclear accidents, as LOCA. The ECP is used to investigate a vertical air/water flow, characterized by void fraction higher than 95%, with mass flow rates ranging from 0.094 to 0.15 kg/s for air and from 0.002 to 0.021 kg/s for water, corresponding to an annular flow pattern. From the ECP signals, the electrode shape functions (i.e., the signals a
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37

Bulkley, G. B., W. A. Womack, J. M. Downey, P. R. Kvietys, and D. N. Granger. "Characterization of segmental collateral blood flow in the small intestine." American Journal of Physiology-Gastrointestinal and Liver Physiology 249, no. 2 (1985): G228—G235. http://dx.doi.org/10.1152/ajpgi.1985.249.2.g228.

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Collateral blood flow and the pressures and resistances determining that flow were measured between two adjacent segments of canine jejunum following acute occlusion of the arterial branch perfusing one of the segments (the “recipient” segment). Collateral flow was approximately 55% of control flow in the recipient segment. This flow was provided by an equal increment in arterial flow to the nonischemic (“donor”) segment, such that pressures, resistances, and flows in the donor segment were not affected. Virtually all of the total collateral flow was derived from precapillary channels and was
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38

Gebrehiwot, S. G., U. Ilstedt, A. I. Gärdenas, and K. Bishop. "Hydrological characterization of watersheds in the Blue Nile Basin, Ethiopia." Hydrology and Earth System Sciences 15, no. 1 (2011): 11–20. http://dx.doi.org/10.5194/hess-15-11-2011.

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Abstract. Thirty-two watersheds (31–4350 km2), in the Blue Nile Basin, Ethiopia, were hydrologically characterized with data from a study of water and land resources by the US Department of Interior, Bureau of Reclamation (USBR) published in 1964. The USBR document contains data on flow, topography, geology, soil type, and land use for the period 1959 to 1963. The aim of the study was to identify watershed variables best explaining the variation in the hydrological regime, with a special focus on low flows. Moreover, this study aimed to identify variables that may be susceptible to management
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39

Zhang, Dawei, Haitao Zhu, Shi Qiu, and Boyan Wang. "Characterization of Collision Avoidance in Pedestrian Crowds." Mathematical Problems in Engineering 2019 (March 28, 2019): 1–9. http://dx.doi.org/10.1155/2019/9237674.

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The avoidance behavior of pedestrians was characterized in the present paper by simulating the movement of crowds in both unidirectional and bidirectional pedestrian flow. A phase change of alternative lane formation observed in real bidirectional pedestrian flows has been studied, where pedestrians tended to evade individuals in counterflow and simultaneously keep a certain distance from each other in the uniform pedestrian flow when the counterflow disappeared. What is more, the comparison between the effect of evading and pushing behavior on evacuation has been investigated in the room egre
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40

Tromp, Rutger R., and Lucas M. C. Cerioni. "Multiphase Flow Regime Characterization and Liquid Flow Measurement Using Low-Field Magnetic Resonance Imaging." Molecules 26, no. 11 (2021): 3349. http://dx.doi.org/10.3390/molecules26113349.

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Multiphase flow metering with operationally robust, low-cost real-time systems that provide accuracy across a broad range of produced volumes and fluid properties, is a requirement across a range of process industries, particularly those concerning petroleum. Especially the wide variety of multiphase flow profiles that can be encountered in the field provides challenges in terms of metering accuracy. Recently, low-field magnetic resonance (MR) measurement technology has been introduced as a feasible solution for the petroleum industry. In this work, we study two phase air-water horizontal flow
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41

Bannwart, Antonio C., Oscar M. H. Rodriguez, Carlos H. M. de Carvalho, Isabela S. Wang, and Rosa M. O. Vara. "Flow Patterns in Heavy Crude Oil-Water Flow." Journal of Energy Resources Technology 126, no. 3 (2004): 184–89. http://dx.doi.org/10.1115/1.1789520.

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This paper is aimed to an experimental study on the flow patterns formed by heavy crude oil (initial viscosity and density 488 mPa s, 925.5kg/m3 at 20°C) and water inside vertical and horizontal 2.84-cm-i.d. pipes. The oil-water interfacial tension was 29 dyn/cm. Effort is concentrated into flow pattern characterization, which was visually defined. The similarities with gas-liquid flow patterns are explored and the results are expressed in flow maps. In contrast with other studies, the annular flow pattern (“core annular flow”) was observed in both horizontal and vertical test sections. These
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42

Stevenson, S. G., S. You, M. S. Izydorczyk, and K. R. Preston. "Characterization of Polymeric Wheat Proteins by Flow Field‐Flow Fractionation/MALLS." Journal of Liquid Chromatography & Related Technologies 26, no. 17 (2003): 2771–81. http://dx.doi.org/10.1081/jlc-120025044.

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43

Thaker, Jignesh, and Jyotirmay Banerjee. "Characterization of two-phase slug flow sub-regimes using flow visualization." Journal of Petroleum Science and Engineering 135 (November 2015): 561–76. http://dx.doi.org/10.1016/j.petrol.2015.10.018.

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44

Ratanathanawongs, S. K., and J. C. Giddings. "Rapid size characterization of chromatographic silicas by flow field-flow fractionation." Chromatographia 38, no. 9-10 (1994): 545–54. http://dx.doi.org/10.1007/bf02277152.

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45

Mamet, V., P. Namy, and J. M. Dedulle. "Numerical modeling of flow focusing: Quantitative characterization of the flow regimes." Physics of Fluids 29, no. 9 (2017): 093606. http://dx.doi.org/10.1063/1.5003840.

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46

Leszczyńska, Agnieszka, Aleksandra Kowalska, Krzysztof Grudzień, Andrzej Romanowski, and Dominik Sankowski. "Pneumatic Flow Characterization Using ECT Tomography Images Analysis." Image Processing & Communications 22, no. 4 (2017): 13–22. http://dx.doi.org/10.1515/ipc-2017-0018.

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Abstract The control of dense phase pneumatic convening process is not a trivial task. The control of bulk solids flow phenomena requires detailed knowledge about the temporal and spatial changes of material concentration during flow. This paper describes application of electrical capacitance tomography for the characterization of the pneumatic conveying of solids. The level of concentration changes obtained with the aid of tomography imaging and calculated flow velocity allows monitoring flow behaviour during the granular material transport process. The cross-correlation technique applied for
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47

Colvert, Brendan, Kevin Chen, and Eva Kanso. "Local flow characterization using bioinspired sensory information." Journal of Fluid Mechanics 818 (March 31, 2017): 366–81. http://dx.doi.org/10.1017/jfm.2017.137.

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Most marine creatures exhibit remarkable flow sensing abilities. Their task of discerning hydrodynamic cues from local sensory information is particularly challenging because it relies on local and partial measurements to accurately characterize the ambient flow. This is in contrast to classical flow characterization methods, which invariably depend on the ability of an external observer to reconstruct the flow field globally and identify its topological structures. In this paper, we develop a mathematical framework in which a local sensory array is used to identify select flow features. Our a
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48

Quattrini, Federico, Germán Berrecoso, José Crecente-Campo, and María José Alonso. "Asymmetric flow field-flow fractionation as a multifunctional technique for the characterization of polymeric nanocarriers." Drug Delivery and Translational Research 11, no. 2 (2021): 373–95. http://dx.doi.org/10.1007/s13346-021-00918-5.

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AbstractThe importance of polymeric nanocarriers in the field of drug delivery is ever-increasing, and the accurate characterization of their properties is paramount to understand and predict their behavior. Asymmetric flow field-flow fractionation (AF4) is a fractionation technique that has gained considerable attention for its gentle separation conditions, broad working range, and versatility. AF4 can be hyphenated to a plurality of concentration and size detectors, thus permitting the analysis of the multifunctionality of nanomaterials. Despite this potential, the practical information that
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49

HU, LI-DAN, NING-DE JIN, and ZHONG-KE GAO. "CHARACTERIZATION OF HORIZONTAL GAS–LIQUID TWO-PHASE FLOW USING MARKOV MODEL-BASED COMPLEX NETWORK." International Journal of Modern Physics C 24, no. 05 (2013): 1350028. http://dx.doi.org/10.1142/s0129183113500289.

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Horizontal gas–liquid two-phase flow widely exists in many physical systems and chemical engineering processes. Compared with vertical upward gas–liquid two-phase flow, investigations on dynamic behavior underlying horizontal gas–liquid flows are quite limited. Complex network provides a powerful framework for time series analysis of complex dynamical systems. We use a network generation method based on Markov transition probability to infer directed weighted complex networks from signals measured from horizontal gas–liquid two-phase flow experiment and find that the networks corresponding to
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50

Nakai, Motonori, Hisahiro Tanaka, Takakatsu Inoue, Mimoto Shindome, and Masato Goto. "Flow and Viscosity Characterization of Fluorocarbon Polymer." Seikei-Kakou 31, no. 4 (2019): 153–56. http://dx.doi.org/10.4325/seikeikakou.31.153.

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