Academic literature on the topic 'Drop sizing methods'

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Journal articles on the topic "Drop sizing methods"

1

Löffler-Mang, M., K. D. Beheng, and H. Gysi. "Messung von Tropfengrößenverteilungen in Regen — ein Vergleich zweier Meßmethoden." Meteorologische Zeitschrift 5, no. 4 (1996): 139–44. http://dx.doi.org/10.1127/metz/5/1996/139.

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Lima, João L. M. P. de, Valdemir P. Silva, M. Isabel P. de Lima, João R. C. B. Abrantes, and Abelardo A. A. Montenegro. "Revisiting simple methods to estimate drop size distributions: a novel approach based on infrared thermography." Journal of Hydrology and Hydromechanics 63, no. 3 (2015): 220–27. http://dx.doi.org/10.1515/johh-2015-0025.

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Abstract The infrared thermography has been successfully applied as a tool for high resolution imaging in different hydrological studies. This exploratory experimental study aimed at evaluating the possibility of using infrared thermography to determine the diameter of raindrops. Rain samples are collected on a pre-heated acrylic board, which is exposed to rain during an instant, and thermograms are recorded. The area of the thermal stains (“signatures” of the raindrops) emerging on the board is measured and converted to drop diameters, applying a calibration equation. Diameters of natural rai
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Brkić, Dejan. "Two Iterative Methods for Sizing Pipe Diameters in Gas Distribution Networks with Loops." Computation 12, no. 2 (2024): 25. http://dx.doi.org/10.3390/computation12020025.

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Closed-loop pipe systems allow the possibility of the flow of gas from both directions across each route, ensuring supply continuity in the event of a failure at one point, but their main shortcoming is in the necessity to model them using iterative methods. Two iterative methods of determining the optimal pipe diameter in a gas distribution network with closed loops are described in this paper, offering the advantage of maintaining the gas velocity within specified technical limits, even during peak demand. They are based on the following: (1) a modified Hardy Cross method with the correction
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Cai, Wenlu, Cherdpong Jomdecha, Yingsong Zhao, Li Wang, Shejuan Xie, and Zhenmao Chen. "Quantitative evaluation of electrical conductivity inside stress corrosion crack with electromagnetic NDE methods." Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences 378, no. 2182 (2020): 20190589. http://dx.doi.org/10.1098/rsta.2019.0589.

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This paper presents a comparison of studies on the local distributed electrical conductivity in stress corrosion crack (SCC) from signals of eddy current testing (ECT) and direct current potential drop (DCPD) aiming to improve SCC sizing accuracy when using electromagnetic non-destructive testing (NDT) methods. Experimental setups of ECT and DCPD were established, respectively, to collect measurement signals due to artificial SCCs in a plate of austenitic stainless steel. The local conductivity in the SCC region was reconstructed from the feature parameters extracted from the measured ECT and
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Singleton, E. W. "Development of a High-Performance Choke Valve with Reference to Sizing for Multiphase Flow." Measurement and Control 24, no. 9 (1991): 273–81. http://dx.doi.org/10.1177/002029409102400902.

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The paper describes events leading up to the development of a variable choke valve for high-pressure drop service on multiphase fluids. During the evolvement of the design, which has now been proved in service, it was found necessary to discard some of the accepted precepts and conventions of control valve design. This work also led to an investigation into the various methods of sizing valves for multiphase fluids. The results obtained from available methods were compared and a new method was devised which appears to maintain a higher level of accuracy over a wide range of multiphase flow con
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Satyarnarayan, L., D. M. Pukazhendhi, Krishnan Balasubramaniam, C. V. Krishnamurthy, and D. S. Ramachandra Murthy. "Phased Array Ultrasonic Measurement of Fatigue Crack Growth Profiles in Stainless Steel Pipes." Journal of Pressure Vessel Technology 129, no. 4 (2006): 737–43. http://dx.doi.org/10.1115/1.2767367.

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This paper reports experimental sizing of fatigue crack profiles that are initiated from artificially made circumferential starter notches in stainless steel pipes of 169mm outer diameter and 14.33mm thickness, which were subjected to cyclic bending loads in a four point bending load arrangement using two nondestractive evaluation (NDE) methods: (a) phased array ultrasonic technique and (b) alternating current potential drop technique. The crack growth estimated using the two NDE techniques were compared with the beach marks that were present in the fracture surface. A simulation study using t
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Gyürki, Dániel, Benjamin Csippa, György Paál, and István Szikora. "Impact of Design and Deployment Technique on the Hydrodynamic Resistance of Flow Diverters." Clinical Neuroradiology 32, no. 1 (2021): 107–15. http://dx.doi.org/10.1007/s00062-021-01106-1.

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Abstract Purpose Despite the high efficacy of flow diverters (FD) in treating sidewall intracranial aneurysms, failures are reported. One of the physical factors determining efficacy is the flow reducing capacity of the FD that is currently unknown to the operator. Our aim was to measure the flow reducing capacity expressed as the hydrodynamic resistance (HR), the metallic surface area (MSA) and pore density (PD) of two different FD designs and quantitatively investigate the impact of sizing and the deployment technique on these parameters. Methods Altogether 38 Pipeline (Medtronic) and P64 (P
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Kalioudjoglou, Loïck, Clément Bonneau, Vincent Melot, Bruno Auvity, Christophe Josset, and Yoann Merriaux. "Prediction or hydraulic performance of shell-and-tube heat exchanger: comparison of 1D and CFD-porous media approaches." MATEC Web of Conferences 240 (2018): 02008. http://dx.doi.org/10.1051/matecconf/201824002008.

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The present paper deals with Heat Exchanger sizing methods and offers a comparison between two of them: 1D global method and CFD porous media method. Following Prithiviraj et al. work [1], new developments are based on recent knowledge acquired on porous media, using a coupling strategy of a three-dimensional commercial code with an in-house code library. The distributed hydraulic resistance concept and the numerical model are briefly described and confronted with pressure drop measurements from an experimental E-type STHE setup (shell-and-tube heat exchanger) from the literature. The present
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Martinez, Gabrielle L., Farzad Poursadegh, Gina M. Magnotti, et al. "Measurement of Sauter mean diameter in diesel sprays using a scattering–absorption measurement ratio technique." International Journal of Engine Research 20, no. 1 (2018): 6–17. http://dx.doi.org/10.1177/1468087418819912.

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A new diagnostic for the quantification of Sauter mean diameter in high-pressure fuel sprays has been recently developed using combined optical and X-ray measurements at the Georgia Institute of Technology and Argonne National Laboratory, respectively. This diagnostic utilizes liquid scattering extinction measurements from diffuse back-illumination imaging, conducted at Georgia Tech, and liquid absorption measurements from X-ray radiography, conducted at Argonne’s Advanced Photon Source. The new diagnostic, entitled the scattering–absorption measurement ratio, quantifies two-dimensional distri
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Grossmann, Wolf, Iris Grossmann, and Karl W. Steininger. "Solar electricity supply isolines of generation capacity and storage." Proceedings of the National Academy of Sciences 112, no. 12 (2015): 3663–68. http://dx.doi.org/10.1073/pnas.1316781112.

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The recent sharp drop in the cost of photovoltaic (PV) electricity generation accompanied by globally rapidly increasing investment in PV plants calls for new planning and management tools for large-scale distributed solar networks. Of major importance are methods to overcome intermittency of solar electricity, i.e., to provide dispatchable electricity at minimal costs. We find that pairs of electricity generation capacity G and storage S that give dispatchable electricity and are minimal with respect to S for a given G exhibit a smooth relationship of mutual substitutability between G and S.
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