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Artykuły w czasopismach na temat „Two-Phase Reactive Flow”

Autor: Grafiati

Data publikacji: 2 listopada 2024

Data aktualizacji: 31 lipca 2025

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1

Cheng, Cheng, and Xiaobing Zhang. "Numerical simulation of two-phase reactive flow with moving boundary." International Journal of Numerical Methods for Heat & Fluid Flow 23, no. 8 (2013): 1277–90. http://dx.doi.org/10.1108/hff-11-2011-0242.

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Geiss, S., A. Dreizler, Z. Stojanovic, M. Chrigui, A. Sadiki, and J. Janicka. "Investigation of turbulence modification in a non-reactive two-phase flow." Experiments in Fluids 36, no. 2 (2004): 344–54. http://dx.doi.org/10.1007/s00348-003-0729-3.

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Rai, Nirmal K., and Tariq D. Aslam. "Evaluation of thermodynamic closure models for partially reacted two-phase mixture of condensed phase explosives." Journal of Applied Physics 131, no. 18 (2022): 185902. http://dx.doi.org/10.1063/5.0085208.

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One of the key fundamental issues that is crucial in the continuum modeling of reactive flow phenomena is the thermodynamically consistent description of reaction mixture properties. To define the mixture properties, thermodynamic closure rules that relate the properties of the individual reaction components to the mixture properties are required. In the context of reactive two-phase modeling approaches, various strategies to define the thermodynamic closures have been adopted such as pressure temperature (PT) equilibrium between the individual reaction components, pressure (specific) volume (

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4

Sengupta, Rajarshi, Mukul D. Tikekar, James V. Raj, Kris T. Delaney, Michael C. Villet, and Glenn H. Fredrickson. "Phase-field simulations of morphology development in reactive polymer blending." Journal of Rheology 67, no. 1 (2023): 1–14. http://dx.doi.org/10.1122/8.0000523.

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Reactive blending is an efficient method for synthesizing polymer blends. Industrially, this process is carried out in extruders, where the reacting polymers and the generated copolymer are subjected to high shear stresses. The dynamics of the process, and the resulting morphology is dictated by a coupling of the hydrodynamic forces in the extruder, the thermodynamic interactions between species, and the reaction kinetics on a complex interfacial manifold. We use phase-field simulations to quantify the evolution of the reactive blending process under an external shear flow. Specifically, we co

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5

Xue, She Sheng. "Modeling and Numerical Simulation of a Gas/Drop Flow." Applied Mechanics and Materials 444-445 (October 2013): 1503–7. http://dx.doi.org/10.4028/www.scientific.net/amm.444-445.1503.

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To investigate the mechanism of TUSOG(Transverse Uniform Singlet Oxygen Generator), a two-phase, chemistry reactive flows model is established to describe the physical and chemical performances of Cl2/He mixed gases which transversely travels through a falling BHP(KOH,H2O2,H2O) droplets field, and the relevant numerical simulation is carried out. In the gas-phase model equations, the mass source term is determined by drop-absorbed chlorine and released singlet oxygen due to chemical reaction between drops and chlorine. An assumption is made that the BHP drops have equal sizes and fall vertical

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6

Cheng, Cheng, and Xiaobing Zhang. "Numerical investigation of two-phase reactive flow with two moving boundaries in a two-stage combustion system." Applied Thermal Engineering 156 (June 2019): 422–31. http://dx.doi.org/10.1016/j.applthermaleng.2019.04.061.

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7

Oliver, J. M. "Thin-film theories for two-phase reactive flow models of active cell motion." Mathematical Medicine and Biology 22, no. 1 (2005): 53–98. http://dx.doi.org/10.1093/imammb/dqh022.

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Hannebique, Gregory, Patricia Sierra, Eleonore Riber, and Bénédicte Cuenot. "Large Eddy Simulation of Reactive Two-Phase Flow in an Aeronautical Multipoint Burner." Flow, Turbulence and Combustion 90, no. 2 (2012): 449–69. http://dx.doi.org/10.1007/s10494-012-9416-x.

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9

Sin, Irina, Vincent Lagneau, and Jérôme Corvisier. "Integrating a compressible multicomponent two-phase flow into an existing reactive transport simulator." Advances in Water Resources 100 (February 2017): 62–77. http://dx.doi.org/10.1016/j.advwatres.2016.11.014.

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10

Xue, Tao, Xiaobing Zhang, and K. K. Tamma. "An in-depth study on the implementation aspect of unified time integrators in reactive two-phase flows with consistent time level." International Journal of Numerical Methods for Heat & Fluid Flow 29, no. 2 (2019): 617–39. http://dx.doi.org/10.1108/hff-04-2018-0173.

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Purpose A consistent implementation of the general computational framework of unified second-order time accurate integrators via the well-known GSSSS framework in conjunction with the traditional Finite Difference Method is presented to improve the numerical simulations of reactive two-phase flows. Design/methodology/approach In the present paper, the phase interaction evaluation in the present implementation of the reactive two-phase flows has been derived and implemented to preserve the consistency of the correct time level evaluation during the time integration process for solving the two p

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11

Keller, Tobias, and Jenny Suckale. "A continuum model of multi-phase reactive transport in igneous systems." Geophysical Journal International 219, no. 1 (2019): 185–222. http://dx.doi.org/10.1093/gji/ggz287.

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SUMMARY Multiphase reactive transport processes are ubiquitous in igneous systems. A challenging aspect of modelling igneous phenomena is that they range from solid-dominated porous to liquid-dominated suspension flows and therefore entail a wide spectrum of rheological conditions, flow speeds and length scales. Most previous models have been restricted to the two-phase limits of porous melt transport in deforming, partially molten rock and crystal settling in convecting magma bodies. The goal of this paper is to develop a framework that can capture igneous system from source to surface at all

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12

Zamuner, B., P. Gilbank, D. Bissières, and C. Berat. "Numerical simulation of the reactive two-phase flow in a kerosene/air tubular combustor." Aerospace Science and Technology 6, no. 7 (2002): 521–29. http://dx.doi.org/10.1016/s1270-9638(02)01190-2.

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13

Bougamra, Ahmed, and Huilin Lu. "Interior Ballistics Two-Phase Reactive Flow Model Applied to Small Caliber Projectile-Gun System." Propellants, Explosives, Pyrotechnics 40, no. 5 (2015): 720–28. http://dx.doi.org/10.1002/prep.201400268.

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14

Shabanian, Jaber, and Jamal Chaouki. "Performance of a Catalytic Gas–Solid Fluidized Bed Reactor in the Presence of Interparticle Forces." International Journal of Chemical Reactor Engineering 14, no. 1 (2016): 433–44. http://dx.doi.org/10.1515/ijcre-2014-0106.

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AbstractThe influence of interparticle forces (IPFs) on the hydrodynamics of a gas–solid fluidized bed was experimentally investigated with the help of a polymer coating approach. The results showed that the presence of IPFs in the bed can considerably change the hydrodynamic parameters. The tendency of the fluidizing gas passing through the bed in the emulsion phase increased with IPFs in the bubbling regime. The performance of a fluidized bed reactor was then studied through simulation of a reactive catalytic system using three different hydrodynamic models: (a) a simple two-phase flow model

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15

Siratarnsophon, Piyapath, Vinicius C. Cunha, Nicholas G. Barry, and Surya Santoso. "Interphase Power Flow Control via Single-Phase Elements in Distribution Systems." Clean Technologies 3, no. 1 (2021): 37–58. http://dx.doi.org/10.3390/cleantechnol3010003.

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The capability of routing power from one phase to another, interphase power flow (IPPF) control, has the potential to improve power systems efficiency, stability, and operation. To date, existing works on IPPF control focus on unbalanced compensation using three-phase devices. An IPPF model is proposed for capturing the general power flow caused by single-phase elements. The model reveals that the presence of a power quantity in line-to-line single-phase elements causes an IPPF of the opposite quantity; line-to-line reactive power consumption causes real power flow from leading to lagging phas

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16

Belhachmi, Z., Z. Mghazli, and S. Ouchtout. "A coupled compressible two-phase flow with the biological dynamics modeling the anaerobic biodegradation process of waste in a landfill." Mathematical Modeling and Computing 9, no. 3 (2022): 483–500. http://dx.doi.org/10.23939/mmc2022.03.483.

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In this article, we present and study a new coupled model combining the biological and the mechanical aspects describing respectively the process of the biogas production and the compressible two-phase leachate-biogas flow during the anaerobic biodegradation of organic matters in a landfill, which is considered a reactive porous medium. The model obtained is governed by a reaction-diffusion system for the bacterial activity coupled with a compressible two-phase flow system of a non-homogeneous porous medium. We carry out the analysis and the numerical approximation of the model within a variat

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17

Rashad, M., X. Zhang, and H. El Sadek. "Interior Ballistics Two-Phase Reactive Flow Model Applied to Large Caliber Guided Projectile-Gun System." Advances in Mechanical Engineering 6 (February 12, 2015): 698032. http://dx.doi.org/10.1155/2014/698032.

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18

Jones, W. P., A. J. Marquis, and D. Noh. "A stochastic breakup model for Large Eddy Simulation of a turbulent two-phase reactive flow." Proceedings of the Combustion Institute 36, no. 2 (2017): 2559–66. http://dx.doi.org/10.1016/j.proci.2016.06.033.

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19

Karadimitriou, N. K., V. Joekar-Niasar, S. M. Hassanizadeh, P. J. Kleingeld, and L. J. Pyrak-Nolte. "A novel deep reactive ion etched (DRIE) glass micro-model for two-phase flow experiments." Lab on a Chip 12, no. 18 (2012): 3413. http://dx.doi.org/10.1039/c2lc40530j.

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20

Akmal Zuhdi, Muhammad, and Faiz Husnayain. "Power Flow Analysis in Unbalanced Three-Phase Distribution Systems using Backward/Forward Sweep and Current Injection Methods." ELKHA 16, no. 2 (2024): 107. http://dx.doi.org/10.26418/elkha.v16i2.82179.

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The electrical power distribution system is a part of the power system that distributes electricity from the transmission network to customers. In the distribution system, imbalances often occur due to the varying load profiles in each phase. This can cause voltage imbalances in the distribution system. This study aims to compare two power flow analysis methods, Backward/Forward Sweep and Current Injection. The study analyses the voltage and power loss conditions on each phase at each bus and line in the three-phase distribution system under unbalanced conditions. Simulations were conducted on

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21

Zaretskiy, Yan, Sebastian Geiger, and Ken Sorbie. "Direct numerical simulation of pore-scale reactive transport: applications to wettability alteration during two-phase flow." International Journal of Oil, Gas and Coal Technology 5, no. 2/3 (2012): 142. http://dx.doi.org/10.1504/ijogct.2012.046318.

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Tatomir, Alexandru, Dejian Zhou, Huhao Gao, Alexandru-Nicolae Dimache, Iulian Iancu, and Martin Sauter. "Modelling of kinetic interface sensitive tracers reactive transport in 2D two-phase flow heterogeneous porous media." E3S Web of Conferences 85 (2019): 07003. http://dx.doi.org/10.1051/e3sconf/20198507003.

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Fluid-fluid interfacial area plays an important role for mass- and energy-transfer processes across the interface which is relevant in several hydrogeological and engineering applications, e.g. enhanced oil-gas recovery, CO2 storage in geological formations, unconventional geothermal systems, contaminant removal, etc. Kinetic interface sensitive tracers were designed to determine the size of the interface between two fluids by undergoing hydrolysis at the fluid-fluid interface. This study investigates by means of numerical modelling the influence of heterogeneity on the KIS tracer breakthrough

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23

Schwendeman, D. W., A. K. Kapila, and W. D. Henshaw. "A study of detonation diffraction and failure for a model of compressible two-phase reactive flow." Combustion Theory and Modelling 14, no. 3 (2010): 331–66. http://dx.doi.org/10.1080/13647830.2010.489955.

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Schwendeman, D. W., C. W. Wahle, and A. K. Kapila. "A study of detonation evolution and structure for a model of compressible two-phase reactive flow." Combustion Theory and Modelling 12, no. 1 (2007): 159–204. http://dx.doi.org/10.1080/13647830701564538.

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25

Cheng, Cheng, and Xiaobing Zhang. "Numerical modeling and investigation of two-phase reactive flow in a high-low pressure chambers system." Applied Thermal Engineering 99 (April 2016): 244–52. http://dx.doi.org/10.1016/j.applthermaleng.2016.01.046.

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26

Bazdidi-Tehrani, Farzad, and Hamed Zeinivand. "Presumed PDF modeling of reactive two-phase flow in a three dimensional jet-stabilized model combustor." Energy Conversion and Management 51, no. 1 (2010): 225–34. http://dx.doi.org/10.1016/j.enconman.2009.09.020.

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27

LOGAN, J. DAVID, and THOMAS S. SHORES. "ON A SYSTEM OF NONLINEAR HYPERBOLIC CONSERVATION LAWS WITH SOURCES." Mathematical Models and Methods in Applied Sciences 03, no. 03 (1993): 341–58. http://dx.doi.org/10.1142/s0218202593000187.

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We study the existence of travelling reaction fronts connecting equilibrium states in the nonlinear reactive-convective system [Formula: see text] where r represents a given chemical reaction rate of a reversible reaction A⇌B, and f(u)=(2−u)(u−1) represents a nonlinear heat source. The original model equations for irreversible reactions and without sources were motivated by an analog of reactive flow and detonation processes posed by Fickett and Majda. It is shown that endothermic compressions exist for wave speeds c≥2 and in this case, a singular perturbation method is developed to find a two

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28

Raju, M. S., and W. A. Sirignano. "Spray Computations in a Centerbody Combustor." Journal of Engineering for Gas Turbines and Power 111, no. 4 (1989): 710–18. http://dx.doi.org/10.1115/1.3240317.

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A hybrid Eulerian–Lagrangian method is employed to model the reactive flow field of a centerbody combustor. The unsteady two-dimensional gas-phase equations are represented in Eulerian coordinates and liquid-phase equations are formulated in Lagrangian coordinates. The gas-phase equations based on the conservation of mass, momentum, and energy are supplemented by turbulence and combustion models. The vaporization model takes into account the transient effects associated with the droplet heating and liquid-phase internal circulation. The integration scheme is based on the TEACH algorithm for ga

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29

Peskova, E. E., and V. N. Snytnikov. "Mathematical Modelling of the Impact of IR Laser Radiation on an Oncoming Flow of Nanoparticles with Methane." Computational Mathematics and Information Technologies 8, no. 3 (2024): 34–42. http://dx.doi.org/10.23947/2587-8999-2024-8-3-34-42.

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Introduction. The study is devoted to the numerical investigation of laser radiation’s effect on an oncoming two-phase flow of nanoparticles and multicomponent hydrocarbon gases. Under such exposure, the hydrogen content in the products increases, and methane is bound into more complex hydrocarbons on the surface of catalytic nanoparticles and in the gas phase. The hot walls of the tube serve as the primary source of heat for the reactive two-phase medium containing catalytic nanoparticles. Materials and Methods. The main method used is mathematical modelling, which includes the numerical solu

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Gharde, Mr Rahul, and Dr Prashant Thakre. "“Enhance the Power Quality of the Smart Grid System by Using Advance UPQC.”." International Journal for Research in Applied Science and Engineering Technology 10, no. 5 (2022): 2778–85. http://dx.doi.org/10.22214/ijraset.2022.42837.

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Abstract: The UPQC is the grouping of a DVR and D- STATCOM which perform series, shunt compensating and phase shifting at the same time. This is capable to control the PQ with leading and lagging reactive and real power flow through a particular route with enhance the system stability. The salient options of UPQC device are its multiple management functions, like voltage management, transient stability improvement & damping oscillation. Voltage sag and swell compensation is important for secure system operation. This is a multivariable versatile AC transmission systems controller. In this

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31

Ahusborde, E., and M. El Ossmani. "A sequential approach for numerical simulation of two-phase multicomponent flow with reactive transport in porous media." Mathematics and Computers in Simulation 137 (July 2017): 71–89. http://dx.doi.org/10.1016/j.matcom.2016.11.007.

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Zhou, Chongbo, Lingyi Guo, Li Chen, Xin Tian, Tiefeng He, and Qinghua Yang. "Pore-Scale Modeling of Air–Water Two Phase Flow and Oxygen Transport in Gas Diffusion Layer of Proton Exchange Membrane Fuel Cell." Energies 14, no. 13 (2021): 3812. http://dx.doi.org/10.3390/en14133812.

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Understanding multiphase flow and gas transport occurring in electrodes is crucial for improving the performance of proton exchange membrane fuel cells. In the present study, a pore-scale model using the lattice Boltzmann method (LBM) was proposed to study the coupled processes of air–water two-phase flow and oxygen reactive transport processes in porous structures of the gas diffusion layer (GDL) and in fractures of the microscopic porous layer (MPL). Three-dimensional pore-scale numerical results show that the liquid water generation rate is gradually reduced as the oxygen consumption reacti

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Kiełczyński, Piotr. "Relation between Mass Sensitivity and Complex Power Flow in Love Wave Sensors." Sensors 22, no. 16 (2022): 6100. http://dx.doi.org/10.3390/s22166100.

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In this paper, we investigate the connection between average power flows in Love wave waveguides with the mass sensitivity of Love wave sensors. In fact, loading with a Newtonian liquid gives rise to two extra power flows, in the transverse direction towards the loading Newtonian liquid. The first is an active power flow feeding viscous losses in the Newtonian liquid and the second is a reactive power flow that is responsible for the phase delay of the Love wave and consequently for the changes in phase velocity of the Love wave. Since loading with a lossless mass also leads to changes in the

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Salmerón, Patricio, Juan L. Flores-Garrido, and Juan A. Gómez-Galán. "Instantaneous Reactive Power Theory in the Geometric Algebra Framework." Applied Sciences 13, no. 3 (2023): 1796. http://dx.doi.org/10.3390/app13031796.

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In this paper, a new approach for instantaneous reactive power analysis in the geometric algebra (GA) environment is presented. The different formulations of the instantaneous reactive power theory (IRPT) proposed, to date, have been developed in three-phase systems. There, an instantaneous power variable, and two/three reactive power variables, all handled independently, were introduced. Thanks to GA, it is possible to carry out a global treatment where an instantaneous power multivector is defined. Thus, in the same multidimensional entity all the power variables are included. From the insta

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35

Zhang, Xinying, Runze Fan, Miao Qi, et al. "Studies on a sinusoidally driven gas–liquid two-phase plasma discharge and its application to sterilization." AIP Advances 12, no. 11 (2022): 115218. http://dx.doi.org/10.1063/5.0100815.

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Atmospheric pressure cold plasmas are widely used in the biomedical field as evidenced by developments in recent years. In this study, a quartz tube-guided gas–liquid two-phase discharge has been configured with a hollow needle-water structure. The power source for the device was sinusoidal, and switching between a gas–liquid miscible discharge and a pure gaseous discharge was simple. It was discovered that the gas–liquid discharge was beneficial in terms of reactant species generation and reaction efficiency in terms of processing water. The types of particles, the physicochemical properties,

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36

Sauni Camposano, Yesenia Haydee, Sascha Sebastian Riegler, Konrad Jaekel, et al. "Phase Transformation and Characterization of 3D Reactive Microstructures in Nanoscale Al/Ni Multilayers." Applied Sciences 11, no. 19 (2021): 9304. http://dx.doi.org/10.3390/app11199304.

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Reactive multilayer systems represent an innovative approach for potential usage in chip joining applications. As there are several factors governing the energy release rate and the stored chemical energy, the impact of the morphology and the microstructure on the reaction behavior is of great interest. In the current work, 3D reactive microstructures with nanoscale Al/Ni multilayers were produced by alternating deposition of pure Ni and Al films onto nanostructured Si substrates by magnetron sputtering. In order to elucidate the influence of this 3D morphology on the phase transformation proc

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Radwan, Eyad, Mutasim Nour, Ali Baniyounes, Khalid S. Al Olimat, and Emad Awada. "Direct control of active and reactive power for a grid-connected single-phase photovoltaic inverter." International Journal of Power Electronics and Drive Systems (IJPEDS) 12, no. 1 (2021): 139. http://dx.doi.org/10.11591/ijpeds.v12.i1.pp139-150.

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This paper presents a single-phase grid-connected photovoltaic system with direct control of active and reactive power through a power management system of a Photovoltaic inverter. The proposed control algorithm is designed to allow maximum utilization of the inverter’s available KVA capacity while maintaining grid power factor and current total harmonic distortion (THD) requirements within the grid standards. To reduce the complexity and improve the efficiency of the system, two independent PI controllers are implemented to control single-phase unipolar PWM voltage source inverter. One contro

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Eyad, Radwan, Nour Mutasim, Baniyounes Ali, S. Al-Olimat Khalid, and Awada Emad. "Direct control of active and reactive power for a grid-connected single-phase photovoltaic inverter." International Journal of Power Electronics and Drive System (IJPEDS) 12, no. 1 (2021): 139–50. https://doi.org/10.11591/ijpeds.v12.i1.pp139-150.

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This paper presents a single-phase grid-connected photovoltaic system with direct control of active and reactive power through a power management system of a Photovoltaic inverter. The proposed control algorithm is designed to allow maximum utilization of the inverter’s available KVA capacity while maintaining grid power factor and current total harmonic distortion (THD) requirements within the grid standards. To reduce the complexity and improve the efficiency of the system, two independent PI controllers are implemented to control single-phase unipolar PWM voltage source inverter. One

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Calcio Gaudino, Emanuela, Giorgio Grillo, Maela Manzoli, Silvia Tabasso, Simone Maccagnan, and Giancarlo Cravotto. "Mechanochemical Applications of Reactive Extrusion from Organic Synthesis to Catalytic and Active Materials." Molecules 27, no. 2 (2022): 449. http://dx.doi.org/10.3390/molecules27020449.

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In the past, the use of mechanochemical methods in organic synthesis was reported as somewhat of a curiosity. However, perceptions have changed over the last two decades, and this technology is now being appreciated as a greener and more efficient synthetic method. The qualified “offer” of ball mills that make use of different set-ups, materials, and dimensions has allowed this technology to mature. Nevertheless, the intrinsic batch nature of mechanochemical methods hinders industrial scale-ups. New studies have found, in reactive extrusion, a powerful technique with which to activate chemical

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B Sharadvithi, K Sreelatha, arnam Amaresh, and C H V Ganesh. "DESIGN AND DEVELOPMENT OF UNIFIED POWER FLOW CONTROLLER USING STATCOM AND VAR COMPENSATORS." Journal of Nonlinear Analysis and Optimization 14, no. 02 (2023): 757–63. https://doi.org/10.36893/jnao.2023.v14i2.121.

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Using MATLAB/SIMULINK, this paper indicates the theory and operation of flexible alternatingcurrent transmission system (facts) devices, namely the unified power flow controller. Two voltage source converters can be connected back to back through a common DC link capacitor in this paper's UPFC. At the point of connection, the VSC-1, referred to as STATCOM, injects a reactive current into the system. The VSC-2 also called the SSSC, injects voltage into the system in series. The unified power flow controller (UPFC) facilitates real-time control of power flow in transmission lines by adjusting li

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41

Ahmed, E., and Y. Huang. "Flame volume prediction and validation for lean blow-out of gas turbine combustor." Aeronautical Journal 121, no. 1236 (2017): 237–62. http://dx.doi.org/10.1017/aer.2016.125.

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ABSTRACTLean Blow-Out (LBO) limits are critically important in the operation of aero engines. Previously, Lefebvre's LBO empirical correlation has been extended to the flame volume concept by the authors. Flame volume takes into account the effects of geometric configuration, spatial interaction of mixing jets, turbulence, heat transfer and combustion processes inside the gas turbine combustion chamber. For these reasons, LBO predictions based on flame volume are more accurate. Although LBO prediction accuracy has improved, it poses a challenge associated with Vfestimation in real gas turbine

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Panariello, Luca, Gaowei Wu, Maximilian O. Besenhard, et al. "A Modular Millifluidic Platform for the Synthesis of Iron Oxide Nanoparticles with Control over Dissolved Gas and Flow Configuration." Materials 13, no. 4 (2020): 1019. http://dx.doi.org/10.3390/ma13041019.

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Gas–liquid reactions are poorly explored in the context of nanomaterials synthesis, despite evidence of significant effects of dissolved gas on nanoparticle properties. This applies to the aqueous synthesis of iron oxide nanoparticles, where gaseous reactants can influence reaction rate, particle size and crystal structure. Conventional batch reactors offer poor control of gas–liquid mass transfer due to lack of control on the gas–liquid interface and are often unsafe when used at high pressure. This work describes the design of a modular flow platform for the water-based synthesis of iron oxi

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Nie, Guo Zheng, Chun Liang Zhong, Lan E. Luo, Ren Long Zhou, and Qiang Liu. "Effect of N₂ Flow on Microstructure, Mechanical Properties and Oxidation Resistance of CrN_x Coatings." Advanced Materials Research 750-752 (August 2013): 2117–20. http://dx.doi.org/10.4028/www.scientific.net/amr.750-752.2117.

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A series of CrNx coatings were deposited by direct-current reactive magnetron sputtering. The microstructure, the hardness and oxidation resistance of the thin films were characterized respectively with X-ray diffraction (XRD) and nanoindentor. The effect of N2 flow on the microstructure, the hardness and oxidation resistance was studied. It was found that the CrNx film has two phases, the conformation of hcp-Cr2N (hexagonal structure) and fcc-CrN (face-centered cubic). In CrNx film phase structure, with N2 flow increasing, there is the conformation of CrNx films transition from Cr2N to Cr2N a

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Rosa, David, Rivana Mabel Lucena Oliveira Souto, Romildo Pereira Brito, Victor Hugo Braz de Lima, Vicemário Simões, and Wellington França de Oliveira. "Thermodynamic and economic evaluation of the butyl acetate production process via reactive distillation." OBSERVATÓRIO DE LA ECONOMÍA LATINOAMERICANA 22, no. 12 (2024): e8330. https://doi.org/10.55905/oelv22n12-193.

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This work deals with a study on the production of butyl acetate through the liquid phase reaction between methyl acetate and butanol. This reversible reaction generates methanol as a by-product and forms two azeotropes, presenting challenges in the process. To overcome these problems and reduce process units, two different configurations are investigated: one with three distillation columns and another with only two, both with a reactive distillation column. Although these distillation systems are efficient in terms of their purpose, they consume a significant amount of energy in the plants wh

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Baer, M. R., and J. W. Nunziato. "A two-phase mixture theory for the deflagration-to-detonation transition (ddt) in reactive granular materials." International Journal of Multiphase Flow 12, no. 6 (1986): 861–89. http://dx.doi.org/10.1016/0301-9322(86)90033-9.

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Ahusborde, Etienne, Michel Kern, and Viatcheslav Vostrikov. "Numerical simulation of two-phase multicomponent flow with reactive transport in porous media: application to geological sequestration of CO2." ESAIM: Proceedings and Surveys 50 (March 2015): 21–39. http://dx.doi.org/10.1051/proc/201550002.

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Sin, Irina, Vincent Lagneau, Laurent De Windt, and Jérôme Corvisier. "2D simulation of natural gas reservoir by two-phase multicomponent reactive flow and transport—Description of a benchmarking exercise." Mathematics and Computers in Simulation 137 (July 2017): 431–47. http://dx.doi.org/10.1016/j.matcom.2016.12.003.

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Eyenubo, OJ, and P. Oshevire. "IMPROVEMENT OF POWER SYSTEM QUALITY USING VSC-BASED HVDC TRANSMISSION." Nigerian Journal of Technology 36, no. 3 (2017): 889–96. http://dx.doi.org/10.4314/njt.v36i3.31.

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The HVDC technology can be represented by the combination of a Direct Current (DC) circuit with two power electronics converters, each one at a link terminal, for AC/DC and DC/AC conversion The principal characteristic of VSC-HVDC transmission is its ability to independently control the reactive and real power flow at each of the AC systems via the Point of Common Coupling (PCC). The active and reactive power is related to the power angle and the magnitude ofÂ voltage in the reference -frame selected such that the quadrature component will result in the ratio between the maximum fundamental pe

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SHORT, M., I. I. ANGUELOVA, T. D. ASLAM, J. B. BDZIL, A. K. HENRICK, and G. J. SHARPE. "Stability of detonations for an idealized condensed-phase model." Journal of Fluid Mechanics 595 (January 8, 2008): 45–82. http://dx.doi.org/10.1017/s0022112007008750.

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The stability of travelling wave Chapman–Jouguet and moderately overdriven detonations of Zeldovich–von Neumann–Döring type is formulated for a general system that incorporates the idealized gas and condensed-phase (liquid or solid) detonation models. The general model consists of a two-component mixture with a one-step irreversible reaction between reactant and product. The reaction rate has both temperature and pressure sensitivities and has a variable reaction order. The idealized condensed-phase model assumes a pressure-sensitive reaction rate, a constant-γ caloric equation of state for an

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Murthy, G. V. K., Sowjan Kumar, B. Nagaraju, R. Shankar, C. Rajalingam, and C. Rajaselvan. "Power Factor Compensation for a Single-Phase AC-DC Hybrid Micro-Grid." International Journal of Innovative Research in Engineering and Management 9, no. 5 (2022): 327–30. http://dx.doi.org/10.55524/ijirem.2022.9.5.49.

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A single-phase AC-DC Hybrid Micro-Grid (HMG) power flow control strategy is modeled and simulated in this paper. Two AC and two DC zones are separated by a bidirectional interlinking converter (BIC) in the full bridge IGBT structure, which is a typical H-Bridge inverter/rectifier, in the proposed HMG system topology. Based on the DQ transformation theory, the BIC's switching pattern comes from one voltage loop (Vdc) and two power control loops. The transfer of both active and reactive power between the HMG and the public AC Grid is controlled by this control strategy. Additionally, this can be

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