Gotowe bibliografie tematyczne / Critical Flow Regime

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Gotowa bibliografia na temat „Critical Flow Regime”

Autor: Grafiati

Data publikacji: 6 września 2023

Data aktualizacji: 31 lipca 2025

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Artykuły w czasopismach na temat "Critical Flow Regime"

Dzhaugashtin, K. E. "The critical jet flow regime." Fluid Dynamics 25, no. 3 (1990): 335–39. http://dx.doi.org/10.1007/bf01049812.

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Gryparis, Evgenios, and Georgios C. Georgiou. "Annular Poiseuille flow of Bingham fluids with wall slip." Physics of Fluids 34, no. 3 (2022): 033103. http://dx.doi.org/10.1063/5.0086511.

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We consider the annular Poiseuille flow of a Bingham fluid with wall slip. First, the analytical solution is derived for the case in which Navier-slip conditions are applied at the two cylinders. A sliding (pure plug) regime is observed below a critical pressure gradient, and a yielding regime is eventually encountered above another critical pressure gradient in which the material yields near the two walls and moves as a plug in a core region. An intermediate semi-sliding regime is observed when different slip laws apply at the two walls in which the material yields only near the wall correspo

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Viebahn, Jan, and Henk A. Dijkstra. "Critical Transition Analysis of the Deterministic Wind-Driven Ocean Circulation — A Flux-Based Network Approach." International Journal of Bifurcation and Chaos 24, no. 02 (2014): 1430007. http://dx.doi.org/10.1142/s0218127414300079.

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A new method for constructing complex networks from fluid flow fields is proposed. The approach focuses on spatial properties of the flow field, namely, on the topology of the streamline field. The network approach is applied to a model of the wind-driven ocean circulation, which exhibits the prototype of a critical transition, that is, a back-to-back saddle-node bifurcation related to two separate dynamical regimes. The network analysis enables a structural characterization of, on the one hand, the viscous regime as a weakly-connected and highly-assortative regime, and, on the other hand, of

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Lamia, Hachemi Rachedi, Lakehal Moussa, and Achour Bachir. "Modern vision for critical flow in an egg-shaped section." Water Science and Technology 84, no. 4 (2021): 840–50. http://dx.doi.org/10.2166/wst.2021.274.

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Abstract The critical regime plays a primordial role in the study of gradually varying flows by classifying flow regimes and slopes. Through this work, a new approach is proposed to analyze critical flow regime in an egg-shaped channel. Based on both the definition of Froude number and Achour and Bedjaoui general discharge relationship, a relation between critical and normal depths is derived and then graphically represented for the particular case of a smooth channel characterized by a generating diameter equal to 1 m. The results show the influence of the slope on the frequency of occurrence

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Yu, Liyuan, Richeng Liu, and Yujing Jiang. "A Review of Critical Conditions for the Onset of Nonlinear Fluid Flow in Rock Fractures." Geofluids 2017 (July 6, 2017): 1–17. http://dx.doi.org/10.1155/2017/2176932.

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Selecting appropriate governing equations for fluid flow in fractured rock masses is of special importance for estimating the permeability of rock fracture networks. When the flow velocity is small, the flow is in the linear regime and obeys the cubic law, whereas when the flow velocity is large, the flow is in the nonlinear regime and should be simulated by solving the complex Navier-Stokes equations. The critical conditions such as critical Reynolds number and critical hydraulic gradient are commonly defined in the previous works to quantify the onset of nonlinear fluid flow. This study revi

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Sarraf Shirazi, Alireza, and Ian Frigaard. "SlurryNet: Predicting Critical Velocities and Frictional Pressure Drops in Oilfield Suspension Flows." Energies 14, no. 5 (2021): 1263. http://dx.doi.org/10.3390/en14051263.

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Improving the accuracy of the slurry flow predictions in different operating flow regimes remains a major focus for multiphase flow research, and it is especially targeted at industrial applications such as oil and gas. In this paper we develop a robust integrated method consisting of an artificial neural network (ANN) and support vector regression (SVR) to estimate the critical velocity, the slurry flow regime change, and ultimately, the frictional pressure drop for a solid–liquid slurry flow in a horizontal pipe, covering wide ranges of flow and geometrical parameters. Three distinct dataset

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Kunii, Kohei, Takahiro Ishida, Yohann Duguet, and Takahiro Tsukahara. "Laminar–turbulent coexistence in annular Couette flow." Journal of Fluid Mechanics 879 (October 1, 2019): 579–603. http://dx.doi.org/10.1017/jfm.2019.666.

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Annular Couette flow is the flow between two coaxial cylinders driven by the axial translation of the inner cylinder. It is investigated using direct numerical simulation in long domains, with an emphasis on the laminar–turbulent coexistence regime found for marginally low values of the Reynolds number. Three distinct flow regimes are demonstrated as the radius ratio $\unicode[STIX]{x1D702}$ is decreased from 0.8 to 0.5 and finally to 0.1. The high-$\unicode[STIX]{x1D702}$ regime features helically shaped turbulent patches coexisting with laminar flow, as in planar shear flows. The moderate-$\

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Merritt, Angela, Belize Lane, and Charles Hawkins. "Classification and Prediction of Natural Streamflow Regimes in Arid Regions of the USA." Water 13, no. 3 (2021): 380. http://dx.doi.org/10.3390/w13030380.

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Understanding how natural variation in flow regimes influences stream ecosystem structure and function is critical to the development of effective stream management policies. Spatial variation in flow regimes among streams is reasonably well understood for streams in mesic regions, but a more robust characterization of flow regimes in arid regions is needed, especially to support biological monitoring and assessment programs. In this paper, we used long-term (41 years) records of mean daily streamflow from 287 stream reaches in the arid and semi-arid western USA to develop and compare several

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Ahmed, A., R. Manzoor, S. U. Islam, and H. Rahman. "Numerical investigation for flow over a square rod through a passive control method at various Reynolds numbers." Canadian Journal of Physics 98, no. 5 (2020): 425–32. http://dx.doi.org/10.1139/cjp-2019-0155.

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This work presents a numerical simulation performed to study the effect of Reynolds number (Re = 80–200) on fluid flow over a square rod attached to two small controlling rods using the Lattice Boltzmann method. For this reason, the spacing ratio between the control rods and main rod varies systematically from g = 0.5–5. Flow has been subdivided into three flow regimes based on spacing ratios. The first flow regime is considered at a small gap (g = 0.5, 1, and 1.5), the second flow regime is obtained at a moderate gap (g = 2, 2.5, and 3), and the third flow regime is considered a at large gap

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Yao, Jianfeng, Wenjuan Lou, Guohui Shen, Yong Guo, and Yuelong Xing. "Influence of Inflow Turbulence on the Flow Characteristics around a Circular Cylinder." Applied Sciences 9, no. 17 (2019): 3595. http://dx.doi.org/10.3390/app9173595.

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To study the influence of turbulence on the wind pressure and aerodynamic behavior of smooth circular cylinders, wind tunnel tests of a circular cylinder based on wind pressure testing were conducted for different wind speeds and turbulent flows. The tests obtained the characteristic parameters of mean wind pressure coefficient distribution, drag coefficient, lift coefficient and correlation of wind pressure for different turbulence intensities and of Reynolds numbers. These results were also compared with those obtained by previous researchers. The results show that the minimum drag coefficie

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Rozprawy doktorskie na temat "Critical Flow Regime"

Li, Shi-Ming. "Mean-Field Free-Energy Lattice Boltzmann Method for Liquid-Vapor Interfacial Flows." Diss., Virginia Tech, 2007. http://hdl.handle.net/10919/29621.

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This dissertation includes a theoretical and numerical development to simulate liquid-vapor flows and the applications to microchannels. First, we obtain a consistent non-local pressure equation for simulating liquid-vapor interfacial flows using mean-field free-energy theory. This new pressure equation is shown to be the general form of the classical van der Waals" square-gradient theory. The new equation is implemented in two-dimensional (2D) D2Q7, D2Q9, and three-dimensional (3D) D3Q19 lattice Boltzmann method (LBM). The three LBM models are validated successfully in a number of analytica

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Andersson, Nyberg Adrian. "Combining hydrologic modelling and boundary shear stress estimates to evaluate the fate of fine sediments in river Juktån : Impact of ecological flows." Thesis, Umeå universitet, Institutionen för ekologi, miljö och geovetenskap, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-145948.

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Altered flow regimes following river regulation can result in significant changes in river bed geomorphology and subsequent negative ecological impacts caused by re-suspended sediments deposited on the riverbed. This study aimed to evaluate the consequences of implementing an ecological flow regime on sediments accumulated within the regulated river Juktån. Sediments were sampled and analysed for particle size distribution to estimate sediment stability. Flow alteration following the ecological flow regime was analysed with HEC-RAS unsteady flow simulation serving as a basis for calculations o

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Tebowei, Roland. "Computational fluid dynamics (CFD) modelling of critical velocity for sand transport flow regimes in multiphase pipe bends." Thesis, Robert Gordon University, 2016. http://hdl.handle.net/10059/2118.

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The production and transportation of hydrocarbon fluids in multiphase pipelines could be severely hindered by particulate solids deposit such as produced sand particles which accompany hydrocarbon production. Knowledge of the flow characteristics of solid particles in fluids transported in pipelines is important in order to accurately predict solid particles deposition in pipelines. This research thesis presents the development of a three-dimensional (3D) Computational Fluids Dynamics (CFD) modelling technique for the prediction of liquid-solids multiphase flow in pipes, with special emphasis

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Dogan, Huseyin Ali. "Investigation Of Bit Hydraulics For Gasified Drilling Fluids." Master's thesis, METU, 2004. http://etd.lib.metu.edu.tr/upload/3/12604906/index.pdf.

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Accurate determination of the pressure losses at the bit is very important for drilling practices in petroleum industry. In the literature, there are several studies on determination of the pressure losses. Major focus is concentrated on single phase drilling fluids, which is far from accurate estimation of pressure losses for multiphase fluids, i.e., fluids including a liquid and a gas phase, at the bit. Some of these models are valid for multiphase fluids, however, they are either valid for very high gas flow rates, or developed using very strong assumptions. This study presents a mathemati

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Gupta, Pradeep. "Studies on Mixing Characteristics in the Critical Flow Regime of Supersonic Ejectors." Thesis, 2021. https://etd.iisc.ac.in/handle/2005/5576.

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Ejectors are passive devices having ubiquitous applications in several engineering domains, including modern-day applications in supercritical CO2-based power and refrigeration cycles. The ejector compresses a low-enthalpy fluid (secondary flow) through gasdynamic interactions with a co-flowing high-enthalpy fluid (primary flow). The ejector operates in the critical mode when the secondary flow is choked aerodynamically, and the entrainment ratio (ER, ratio of secondary to primary mass flow rate) becomes independent of the compression ratio (CR, ratio of the ejector exit pressure to the second

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Blackmore, Adam. "The Use of End Plates for a Cylinder in the Sub-critical Flow Regime." Thesis, 2011. http://hdl.handle.net/1807/29494.

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Experiments were conducted in a free-surface, re-circulating water channel to determine the dependence of spanwise flow uniformity in the near wake of a circular cylinder on the end conditions using Particle Image Velocimetry. The Reynolds number was 10,000. The end conditions consisted of plates with different leading edge geometries and configurations. A cylinder bounded by two endplates with sharp leading edge geometry generated the most uniform near wake. The horseshoe vortex dynamics in the cylinder/ wall and cylinder/endplate junctions were also studied. Upstream flow separation signific

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Chin-TsungWang and 王津琮. "Experimental investigations on initial transition of flow over a circular cylinder from the sub-critical to pre-critical regime." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/39708847463171251300.

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碩士 國立成功大學 航空太空工程學系碩博士班 101 This study aims to investigate the phenomenon of flow around a circular cylinder at Reynolds numbers between 1.7×105 and 4×105. The pressure taps signals on the circular cylinder were used to determine the pre-critical regime B state regime, the pre-critical regime A state regime and the one bubble regime. The experiment used different circular cylinders characterized by different relative roughness. Velocity measurements were carried out with a single hot-wire situated in the wake region. Both of the pressure and velocity signals obtained were analyzed w

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Meng-ChiaoChen and 陳孟巧. "Investigations of Transition Phenomenon of the Flow around a Circular Cylinder in the Critical Regime." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/86375561413599384706.

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Hsu, Wei-ting, and 許瑋婷. "Investigations of wake flow of a circular cylinder in the critical regime by MEMS film sensors array." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/15000169017029822366.

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碩士 國立成功大學 航空太空工程學系碩博士班 96 An experimental investigation of flow around a smooth circular cylinder was carried out in a transonic wind tunnel,at Reynolds numbers 4.1x105~5.67x105,corresponding the Mach numbers in a range of 0.4 to 0.7. Unsteady characteristics of flow separation were studied with an array of self-made micro-electrical-mechanical-system (MEMS) film sensors, which were flushed with the cylinder surface, aligned in the circumferential direction. By correlation analysis of the signals obtained by two neighboring sensors, it is found that the location of flow separation

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Tsai, Hsing-Wen, and 蔡星汶. "Experimental Investigations of Flows Around Circular Cylinders in the Critical Regime." Thesis, 2006. http://ndltd.ncl.edu.tw/handle/95194954393300496105.

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碩士 國立成功大學 航空太空工程學系碩博士班 94 In this study, we investigated the aerodynamic characteristics of the flows around circular cylinders at Reynolds numbers 1.73×10^5~5.86×10^5. First of all, the base pressures across the critical regime were measured, therefore the relation between base-pressure coefficient and Reynolds number was reduced. Then, we determined the lowest Reynolds number at which the flow field entered the one-bubble regime by comparing the root-mean-square values of the pressure coefficients on two sides of a cylinder. In this way, all the sub-regimes in the critical regime

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Książki na temat "Critical Flow Regime"

M, Ishii, U.S. Nuclear Regulatory Commission. Office of Nuclear Regulatory Research. Division of Systems Research., and Argonne National Laboratory, eds. Flow visualization study of post critical heat flux region for inverted bubbly, slug and annular flow regimes. Division of Systems Research, Office of Nuclear Regulatory Research, U.S. Nuclear Regulatory Commission, 1988.

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Barsky, Eugene. Critical Regimes of Two-Phase Flows with a Polydisperse Solid Phase. Springer Netherlands, 2010. http://dx.doi.org/10.1007/978-90-481-8838-3.

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Cathcart, Adam, Christopher Green, and Steven Denney, eds. Decoding the Sino-North Korean Borderlands. Amsterdam University Press, 2021. http://dx.doi.org/10.5117/9789462987562.

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Since the 1990s, the Chinese-North Korean border region has undergone a gradual transformation into a site of intensified cooperation, competition, and intrigue. These changes have prompted a significant volume of critical scholarship and media commentary across multiple languages and disciplines. Drawing on existing studies and new data, Decoding the Sino-North Korean Borderlands brings much of this literature into concert by pulling together a wide range of insight on the region's economics, security, social cohesion, and information flows. Drawing from multilingual sources and transnational

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Barsky, Eugene. Critical Regimes of Two-Phase Flows with a Polydisperse Solid Phase. Springer, 2010.

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Barsky, Eugene. Critical Regimes of Two-Phase Flows with a Polydisperse Solid Phase. Springer London, Limited, 2012.

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Critical regimes of two-phase flows with a polydisperse solid phase. Springer, 2010.

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Al-Sahan, Muzahem Abdulraham. On the development of the flow regimes and the formulation of a mechanistic non-equilibrium model for critical two-phase flow. 1988.

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Thompson, Alexander. Political and Legal Challenges. Edited by Kevin R. Gray, Richard Tarasofsky, and Cinnamon Carlarne. Oxford University Press, 2016. http://dx.doi.org/10.1093/law/9780199684601.003.0007.

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This chapter explores the interplay between politics and international law in the field of climate finance, with an emphasis on its North-South dimensions, which is the promotion of resource flows by developed nations towards developing nations. Participation by developing countries in the climate regime is critical as they are the largest emitters of greenhouse gas. Unfortunately, it is the less-developed nations that are harmed the most by climate change. It is here where North-South finance emerges as an important issue. The chapter addresses two critical issues in the governance and future

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Idler, Annette, and Juan Carlos Garzón Vergara, eds. Transforming the War on Drugs. Oxford University Press, 2021. http://dx.doi.org/10.1093/oso/9780197604359.001.0001.

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This book asks how the international community can tackle the complex causes and consequences that the War on Drugs is intended to address. This question arises against the backdrop of the War on Drugs’ failure to significantly reduce the scale or impact of illicit drug production and trafficking as well as the lack of consensus on the way forward in the international policy debate. Challenging conventional defense- and security-sector thinking, this book constitutes the first comprehensive, systematic effort to theoretically, conceptually, and empirically investigate the effects of the intern

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Pilcher, Jeffrey M., ed. The Oxford Handbook of Food History. Oxford University Press, 2012. http://dx.doi.org/10.1093/oxfordhb/9780199729937.001.0001.

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This book chronicles the history of food. It starts with the Columbian Exchange, a term coined in 1972 by the historian Alfred Crosby to refer to the flow of plants, animals and microbes across the Atlantic Ocean and beyond. It then explores the spice trade during the medieval period, the social biography and politics of food, and how food history is connected with race and ethnicity in the United States. The book also focuses on cookbooks as an important primary source for historians; contemporary food ethics, ethical food consumerism, and “ethical food consumption”; the link between food and

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Części książek na temat "Critical Flow Regime"

Thangadurai, Murugan, Mrityunjay Singh, Vinoth Kumar, and P. K. Chatterjee. "Effect of Free Stream Turbulence on Flow over a Circular Cylinder in the Sub-critical Regime: An Experimental Investigation." In Fluid Mechanics and Fluid Power – Contemporary Research. Springer India, 2016. http://dx.doi.org/10.1007/978-81-322-2743-4_119.

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Li, Sicheng, and Jinjun Wang. "Frequency Effect on Properties of Turbulent/Non-turbulent Interface in Separated and Reattaching Flows Past an Oscillating Fence." In IUTAM Bookseries. Springer Nature Switzerland, 2024. https://doi.org/10.1007/978-3-031-78151-3_14.

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AbstractThe turbulent/non-turbulent interface (TNTI) in the separated and reattaching flows induced by an oscillating fence is experimentally study using particle image velocimetry in this paper. The oscillation frequency of fence is varied spanning subcritical, transitional, critical and supercritical flow regimes, respectively. In the subcritical case, the flow pattern and the TNTI properties are very similar to that in the static case, except in the vicinity of the fence where the actuated low-frequency flapping of the separated shear layer causes larger TNTI height fluctuations. The strong

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Barsky, Eugene. "Principal Statistical Relations of Mass Transfer in Critical Flow." In Critical Regimes of Two-Phase Flows with a Polydisperse Solid Phase. Springer Netherlands, 2010. http://dx.doi.org/10.1007/978-90-481-8838-3_5.

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Barsky, Eugene. "Critical Regimes of Two-Phase Flows in Complicated Systems." In Critical Regimes of Two-Phase Flows with a Polydisperse Solid Phase. Springer Netherlands, 2010. http://dx.doi.org/10.1007/978-90-481-8838-3_11.

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Barsky, Eugene. "Stochastic Model of Critical Regimes of Two-Phase Flows." In Critical Regimes of Two-Phase Flows with a Polydisperse Solid Phase. Springer Netherlands, 2010. http://dx.doi.org/10.1007/978-90-481-8838-3_12.

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Barsky, Eugene. "Mass Transfer in Critical Regimes of Two-Phase Flows." In Critical Regimes of Two-Phase Flows with a Polydisperse Solid Phase. Springer Netherlands, 2010. http://dx.doi.org/10.1007/978-90-481-8838-3_13.

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Barsky, Eugene. "General Ideas of Mass Transfer Processes in Critical Regimes." In Critical Regimes of Two-Phase Flows with a Polydisperse Solid Phase. Springer Netherlands, 2010. http://dx.doi.org/10.1007/978-90-481-8838-3_1.

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Barsky, Eugene. "Stability and Kinetic Aspects of Mass Distribution in Critical Regimes." In Critical Regimes of Two-Phase Flows with a Polydisperse Solid Phase. Springer Netherlands, 2010. http://dx.doi.org/10.1007/978-90-481-8838-3_10.

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Barsky, Eugene. "System of Particles of the Same Size Class in a Critical Flow." In Critical Regimes of Two-Phase Flows with a Polydisperse Solid Phase. Springer Netherlands, 2010. http://dx.doi.org/10.1007/978-90-481-8838-3_3.

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Barsky, Eugene. "Structural Model of Mass Transfer in Critical Regimes of Two-Phase Flows." In Critical Regimes of Two-Phase Flows with a Polydisperse Solid Phase. Springer Netherlands, 2010. http://dx.doi.org/10.1007/978-90-481-8838-3_7.

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Streszczenia konferencji na temat "Critical Flow Regime"

Schmitt, G., and M. Bakalli. "A Critical Review of Measuring Techniques for Corrosion Rates under Flow Conditions." In CORROSION 2006. NACE International, 2006. https://doi.org/10.5006/c2006-06593.

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Abstract The rotated disc, rotated cylinder, rotated cage, jet impingement, pipes and channels are frequently used to study the corrosion performance of materials in flowing media. All these corrosion investigation and test tools are discussed critically with respect to beneficial aspects and inherent shortcomings. Clear distinction is made between corrosion experiments and electrochemical measurements in order to clarify the depth of information and the limits of application of both approaches. This is important specifically for reliable estimation of threshold conditions for the initiation o

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Singh, Binder, and Kana Krishnathasan. "Pragmatic Effects of Flow on Corrosion Prediction." In CORROSION 2009. NACE International, 2009. https://doi.org/10.5006/c2009-09275.

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Abstract Recent design work regarding deep Gulf of Mexico (GOM) subsea flowlines has emphasized the need to identify, develop, and verify critical relationships between corrosion prediction and flow regime mechanisms. In practice this often reduces to a pragmatic interpretation of the effects of flow on corrosion mechanisms. Most importantly the identification of positions or sites, within the internal surface contact areas where the maximum corrosion stimulus may be expected to occur, thereby allowing better understanding, mitigation, monitoring and corrosion control over the life cycle. Some

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Paolinelli, L. D. "Study of Phase Wetting in Three-Phase Oil-Water-Gas Horizontal Pipe Flow - Recommendations for Corrosion Risk Assessment." In CORROSION 2018. NACE International, 2018. https://doi.org/10.5006/c2018-11213.

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Abstract Accurate prediction of the phase wetting regime of internal pipe walls of oil production lines is of paramount importance when performing internal corrosion assessments. Therefore, corrosion control costs can be reduced as mitigation efforts can be directly aimed at the most critical pipeline areas where water is most likely to segregate and wet the pipe wall. Surface wetting regime (e.g., oil wet or water wet) depends on several factors, such as flow rates and physicochemical properties of the transported fluids, pipe diameter and inclination, and also pipe surface wettability. This

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Lagad, Vishal V., Sridhar Srinivasan, and Russell D. Kane. "Facilitating Internal Corrosion Direct Assessment Using Advanced Flow and Corrosion Prediction Models." In CORROSION 2008. NACE International, 2008. https://doi.org/10.5006/c2008-08131.

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Abstract Internal Corrosion Direct Assessment (ICDA) is a process used to evaluate pipeline integrity based on identifying locations along the pipeline where internal corrosion damage is most likely to occur. Liquid Petroleum Internal Corrosion Direct Assessment (LP-ICDA) is designed to address pipelines that are fully packed with a liquid phase and Wet Gas Internal Corrosion Direct Assessment (WG-ICDA) is being targeted towards wet gas pipelines much like Dry Gas ICDA (DG-ICDA) has been developed to address normally dry gas transmission pipelines. The four step ICDA process requires integrati

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Cheng, W., D. I. Pullin, and Ravi Samtaney. "Large-eddy simulation of flow over a circular cylinder in the sub-critical regime." In Tenth International Symposium on Turbulence and Shear Flow Phenomena. Begellhouse, 2017. http://dx.doi.org/10.1615/tsfp10.1200.

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Bower, Jason S., and James F. Klausner. "Effect of Flow Orientation on Critical Heat Flux in Subcooled Flow Boiling." In ASME 2004 Heat Transfer/Fluids Engineering Summer Conference. ASMEDC, 2004. http://dx.doi.org/10.1115/ht-fed2004-56554.

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Recent work has demonstrated that as the bulk convective velocity in subcooled nucleate flow boiling increases, the heat transfer tends to become independent of flow orientation with respect to gravity. There is significant interest in developing heat exchangers for next generation spacecraft that operate in the gravity-independent flow boiling regime. In order to develop such heat exchangers it is important to understand the effect of gravity on the critical heat flux and to determine whether a gravity on the critical heat flux and to determine whether a gravity-independent flow boiling criti

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Endo, Takahide, and Ryutaro Himeno. "NUMERICAL SIMULATION OF FLOW ACROSS A COMPLIANT BLUFF BODY IN THE CRITICAL REYNOLDS NUMBER REGIME." In Fourth International Symposium on Turbulence and Shear Flow Phenomena. Begellhouse, 2005. http://dx.doi.org/10.1615/tsfp4.880.

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Ota, Terukazu, Ken-ichiro Ueda, and Hiroyuki Yoshikawa. "Hysteresis of Flow Around an Elliptic Cylinder in Critical Reynolds Number Regime." In ASME 2004 Heat Transfer/Fluids Engineering Summer Conference. ASMEDC, 2004. http://dx.doi.org/10.1115/ht-fed2004-56141.

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Experimental investigations of the flow around an elliptic cylinder of axis ratio 1:2 were carried out for several angles of attack in a wide range of Reynolds number. The flow characteristics were studied by measuring the fluid forces and the surface pressure. In the critical Reynolds number regime, a discontinuous change of flow state was observed. This change was accompanied by the remarkable hysteresis phenomenon. The fluctuation of fluid forces and surface pressure, in general, markedly decreases in the critical flow state.

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Ota, Terukazu, Seijiro Takahashi, and Hiroyuki Yoshikawa. "Hysteresis of Flow Around an Elliptic Cylinder in Critical Reynolds Number Regime." In ASME 2005 Fluids Engineering Division Summer Meeting. ASMEDC, 2005. http://dx.doi.org/10.1115/fedsm2005-77236.

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Experimental investigations of the flow around an elliptic cylinder of axis ratio 1:3 were carried out for several angles of attack in a wide range of Reynolds number. The flow characteristics were studied by measuring the fluid forces and the surface pressure. In the critical Reynolds number regime, a discontinuous change of flow state was observed. This change was accompanied by the remarkable hysteresis phenomenon. Details of this hysteresis process are described in the paper.

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Gupta, Pradeep, Srisha Rao MV, and Pramod Kumar. "Effect of Mixing Duct Geometry of Supersonic Ejector in the Critical Flow Regime." In Proceedings of the 32nd International Symposium on Shock Waves (ISSW32 2019). Research Publishing Services, 2019. http://dx.doi.org/10.3850/978-981-11-2730-4_0152-cd.

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Raporty organizacyjne na temat "Critical Flow Regime"

Esquivel, Maricarmen, Alfred Grunwaldt, Juan Roberto Paredes, and Enrique Rodríguez-Flores. Vulnerability to Climate Change of Hydroelectric Production Systems in Central America and their Adaptation Options: Executive Summary. Inter-American Development Bank, 2016. http://dx.doi.org/10.18235/0006338.

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Central America is one of the most vulnerable regions to the effects of climate change. With more than 50% of the electricity generation depending on existing hydroelectric plants by 2015, the region's energy security is heavily dependent on the amount of hydroelectric energy that can be produced and thus on the water flows available in its rivers. In addition, the region still has a significant untapped potential. Consequently, it is critical to determine the potential impacts of climate change on water flows in current and future hydroelectric plants so as to ensure energy reliability and se

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de Marcellis-Warin, Nathalie, Martin Trépanier, and Thierry Warin. Measuring Competitiveness in the Great Lakes-St. Lawrence Region Using a Digital Twin: A Geospatial Data Science Approach. CIRANO, 2024. https://doi.org/10.54932/dkbc6587.

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The study of competitiveness has long been constrained by traditional trade analyses, which focus on inter-industry flows between countries while overlooking the intricate interconnectedness of supply chains. This position paper advocates for the use of digital twin technology to replicate complex economic systems, enabling the modeling of firm-to-firm interactions and uncovering the micro-level impacts of macroeconomic phenomena. We present an integrated analytical framework to analyze the bi-national Great Lakes-St. Lawrence (GLSL) region, spanning Canada and the United States. The creation

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Brouard, E., J. E. Campbell, P. M. Godbout, et al. Report of 2023 field activities for the GEM-GeoNorth West-central Keewatin Glacial Dynamics activity, Nunavut. Natural Resources Canada/CMSS/Information Management, 2024. http://dx.doi.org/10.4095/332531.

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The landscapes we see today in northern Canada are the results of the dynamics of former continental glaciations of the Quaternary. As the environment evolved with the cyclic growth and decay of ice sheets, it is paramount to understand the history of these glacial cycles to provide a robust framework for geological and environmental studies. Much is known about these glaciations in southern Canada, but in northern Canada, extensive regions remain poorly studied because of their remoteness and hence knowledge of past glaciations there remains somewhat limited. West-central Keewatin, for exampl

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Serra, Lucila, Diana Smallridge, Barbara Buchner, José Juan Gomes Lorenzo, Chiara Trabacchi, and Maria Netto. The Role of National Development Banks in Intermediating International Climate Finance to Scale Up Private Sector Investments. Inter-American Development Bank, 2012. http://dx.doi.org/10.18235/0006938.

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Significant investments are needed to support the global transition to a low-carbon, climate resilient future. Current finance flows fall short of global financing needs, and massive scaling up is needed to unlock additional financial resources and foster a sustainable investment pathway. Overcoming barriers to private sector investments is critical, and international climate finance can play a catalytic role in this regard. National development banks (NDBs) have a unique role in this context, both complementing and catalyzing private sector players. NDBs have a privileged position in their lo

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Nguyen, Hung. DTPH56-14-H-CAAP02 Wall Break-Through in Composite Repaired Defects. Pipeline Research Council International, Inc. (PRCI), 2017. http://dx.doi.org/10.55274/r0011839.

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Composite materials installed on pipelines where damage generated by corrosion or erosion that begins as a wall-loss defect that can transition to a through-wall defect. Critically, the damage generated by the process tends to have a region of diffuse wall loss surrounding a through-wall penetration. Design qualification of repairs for through-wall defects are performed using simulated flaws manufactured by drilling through the pipe wall. This creates straight-sided flaws with significant remaining stiffness, very different from the diffuse, tapered flaws produced by erosion or corrosion. This

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Gavin, Greg, Paul Inkenbrandt, Trevor Schlossnagle, and Rebecca Molinari. Groundwater of Pahvant Valley, Millard County, Utah. Utah Geological Survey, 2024. http://dx.doi.org/10.34191/ss-173.

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Pahvant Valley, located in Millard County, Utah, encompasses 1610 square miles and includes several small towns, agricultural districts, hot springs, and biologically important wetlands, all heavily reliant on groundwater. This study, conducted by the Utah Geological Survey during 2022 and 2023, aims to define Pahvant Valley’s water recharge and discharge estimates, characterize its primary hydrogeologic units, and describe groundwater recharge and discharge areas. The research includes the collection of groundwater and surface water samples to estimate flow paths, sources of recharge and disc

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Brushett, D. M., C. E. Beckett-Brown, M. B. McClenaghan, et al. Till geochemical data for the Brazil Lake pegmatite area, southwest Nova Scotia, Canada (NTS 21-A/04, 20-O/16 and 20-P/13): samples collected in 2020, 2021, and 2022. Natural Resources Canada/CMSS/Information Management, 2024. http://dx.doi.org/10.4095/332384.

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This open file reports geochemical data for till samples collected as a part of a till geochemical and surficial mapping project around the Brazil Lake lithium-cesium-tantalum (LCT-type) pegmatite in southwestern Nova Scotia (NTS map sheets 21A/04, 20O/16 and 20P/13). The global rise in lithium demand has motivated the Geological Survey of Canada's (GSC) recent investigations of the Brazil Lake pegmatites to study surficial geochemistry methods that can be used to explore for lithium and associated critical minerals (i.e., Cs, Ta, Be, In, Sn, W). These types of deposits are important sources o

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Huntley, D., D. Rotheram-Clarke, R. Cocking, J. Joseph, and P. Bobrowsky. Current research on slow-moving landslides in the Thompson River valley, British Columbia (IMOU 5170 annual report). Natural Resources Canada/CMSS/Information Management, 2022. http://dx.doi.org/10.4095/331175.

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Interdepartmental Memorandum of Understanding (IMOU) 5170 between Natural Resources Canada (NRCAN), the Geological Survey of Canada (GSC) and Transport Canada Innovation Centre (TC-IC) aims to gain new insight into slow-moving landslides, and the influence of climate change, through testing conventional and emerging monitoring technologies. IMOU 5107 focuses on strategically important sections of the national railway network in the Thompson River valley, British Columbia (BC), and the Assiniboine River valley along the borders of Manitoba (MN) and Saskatchewan (SK). Results of this research ar

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Lawrence, David, Mike Tercek, Amber Runyon, and Jeneva Wright. Historical and projected climate change for Grand Canyon National Park and surrounding areas. National Park Service, 2024. http://dx.doi.org/10.36967/2301726.

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Globally, anthropogenic climate change is one of the greatest threats to resources in protected areas. This report examines historical and projected climate change across the Greater Grand Canyon Landscape (GGCL), including Grand Canyon National Park. Grand Canyon National Park warmed significantly from 1895-2020 (annual mean increase of 1.89? F/century), with temperatures increasing at a faster rate from 1970-2020 (6.31? F/century). Warming occurred at all elevations and seasons across the GGCL, but rates differed spatially. Average annual total precipitation within Grand Canyon National Park

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