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Journal articles on the topic 'Gas-particles'

Author: Grafiati

Published: 16 November 2024

Last updated: 31 July 2025

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1

Dac Dien, Nguyen, Luong Huu Phuoc, Do Duc Tho, Nguyen Anh Phuc Duc, Nguyen Duc Chien, and Dang Duc Vuong. "HYDROTHERMAL SYNTHESIS AND NH3 GAS SENSING PROPERTY OFWO3 NANO PARTICLES." Journal of Science, Natural Science 60, no. 7 (2015): 68–74. http://dx.doi.org/10.18173/2354-1059.2015-0034.

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2

KASHU, SEIICHIRO. "Gas deposition of ultrafine particles." SHINKU 35, no. 7 (1992): 649–53. http://dx.doi.org/10.3131/jvsj.35.649.

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3

Sychevskii, V. A. "Gas-detonation processing of particles." High Temperature 46, no. 5 (2008): 686–94. http://dx.doi.org/10.1134/s0018151x08050143.

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4

Burde, Jan-Philipp, Thomas Wilhelm, Jochen Kuhn, and Stephan Lück. "“Particles” simuliert ein ideales Gas." Physik in unserer Zeit 45, no. 1 (2014): 46–47. http://dx.doi.org/10.1002/piuz.201490007.

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5

GILBERTSON, M. A., and I. EAMES. "Segregation patterns in gas-fluidized systems." Journal of Fluid Mechanics 433 (April 25, 2001): 347–56. http://dx.doi.org/10.1017/s0022112001003950.

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The formation of segregation patterns in initially homogeneous, fluidized, binary mixtures of particles has been studied. The adjustment of the bed depends on the proportions of fine and coarse particles in the mixture and the gas flow rate relative to the minimum fluidization velocities of the two components. The particles are immobile until the gas flow rate is sufficiently large to fluidize the mixture of particles. When the gas flow rate exceeds this critical value, alternating vertical bands of coarse and fine particles form. At a second critical gas velocity this pattern breaks down and

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6

x, Shubham. "CFD DEM Study of Gas Solid Fluidized Bed for Non Spherical Particles." International Journal of Science and Research (IJSR) 12, no. 7 (2023): 447–51. http://dx.doi.org/10.21275/sr23701235635.

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7

Inácio, Malmonge Martin. "RADON GAS INTENSITY VARIATION FROM APRIL TO JULY 2018 IN SÃO JOSÉ DOS CAMPOS, BRAZIL REGION." GLOBAL JOURNAL OF ENGINEERING SCIENCE AND RESEARCHES 5, no. 8 (2018): 90–96. https://doi.org/10.5281/zenodo.1342502.

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During the period from April 23 to July 23, 2018, the intensity of radon gas was measured at the ITA campus in the region of São José dos Campos, SP, Brazil. On this occasion between autumn and winter there were no rains, but covers of temporally clouds and drizzles in the region. Radon gas was monitored each 10-minute intervals and averaged for one hour, throughout the time interval considered in this study. A portable radon detector was usedmanufactured by RadonEye RD200 from South Korea. This system, which consists of an ionization chamber, was tested in the experimental ITA P

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Zhumaev, M. R. "INVARIANT RELATIVISTIC THEORY OF IDEAL GAS." Eurasian Physical Technical Journal 18, no. 4 (38) (2021): 88–101. http://dx.doi.org/10.31489/2021no4/88-101.

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The purpose of this study is to develop an original theory of a relativistic ideal gas and to prove the validity of the postulate of the special theory of relativity for the characteristic (i.e., arithmetic mean, root-mean-square) velocities of particles of a relativistic ideal gas even in the massless limit. In this work, the following original methods are used for the first time in the theory of a relativistic ideal gas: the method of nonlinear transformation to prove of the distribution function to find the distribution function of the velocities of particles of a relativistic ideal gas; th

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9

Wooldridge, Margaret S. "Gas-phase combustion synthesis of particles." Progress in Energy and Combustion Science 24, no. 1 (1998): 63–87. http://dx.doi.org/10.1016/s0360-1285(97)00024-5.

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Bischof, Oliver F., and Henna Tuomenoja. "Measurement of blow-by gas particles." MTZ worldwide 64, no. 7-8 (2003): 18–21. http://dx.doi.org/10.1007/bf03227601.

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11

Epstein, Norman, and Pratap P. Chandnani. "Gas spouting characteristics of fine particles." Chemical Engineering Science 42, no. 12 (1987): 2977–81. http://dx.doi.org/10.1016/0009-2509(87)87069-0.

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Wang, Shining, Jian Xu, Weisheng Wei, et al. "Gas spouting hydrodynamics of fine particles." Canadian Journal of Chemical Engineering 78, no. 1 (2000): 156–60. http://dx.doi.org/10.1002/cjce.5450780120.

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13

Lv, Hua, Zhongqi Wang, Yunming Zhang, and Jianping Li. "Initial Moving Mechanism of Densely-Packed Particles Driven by a Planar Shock Wave." Shock and Vibration 2021 (April 17, 2021): 1–12. http://dx.doi.org/10.1155/2021/8867615.

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The initial moving mechanism of densely packed particles driven by shock waves is unclear but vital for the next accurate calculation of the problem. Here, the initial motion details are investigated experimentally and numerically. We found that before particles show notable motion, shock waves complete reflection and transmission, and stress waves propagate downstream on particle skeleton. Due to the particle stress wave, particles successively accelerate and obtain an axial velocity of 6–8 m/s. Then, the blocked gas pushes the upstream particles integrally to move downstream, while the gas f

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14

Tomanovic, Ivan, Srdjan Belosevic, Aleksandar Milicevic, Nenad Crnomarkovic, and Dragan Tucakovic. "Numerical tracking of sorbent particles and distribution during gas desulfurization in pulverized coal-fired furnace." Thermal Science 21, suppl. 3 (2017): 759–69. http://dx.doi.org/10.2298/tsci160212196t.

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Furnace sorbent injection for sulfur removal from flue gas presents a challenge, as the proper process optimization is of crucial importance in order to obtain both high sulfur removal rates and good sorbent utilization. In the simulations a two-phase gas-particle flow is considered. Pulverized coal and calcium-based sorbent particles motion is simulated inside of the boiler furnace. It is important to determine trajectories of particles in the furnace, in order to monitor the particles heat and concentration history. A two-way coupling of the phases is considered ? influence of the gas phase

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Nguyen, Q. P. P., Peter K. Currie, and P. S. R. S. R. Bouzanga. "The Effect of Gas on the Injectivity of Particles in Sandstone." SPE Journal 16, no. 01 (2010): 95–103. http://dx.doi.org/10.2118/121637-pa.

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Summary Many operations involve the injection of fluids into the formation around a well. In many cases, the fluids contain colloidal particles, either initially present or introduced during the operation through dirt or naturally occurring particles. Therefore, all injection schemes potentially suffer from injectivity decline. This injectivity decline is caused by clogging of the formation by particles, forming an external filter cake on the surface of the formation and blocking the pores inside the formation. This paper reports on the effects of gas on the injectivity of particles in sandsto

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16

Xu, Zhongyi, Shaohua Gu, Daqian Zeng, Bing Sun, and Liang Xue. "Numerical Simulation of Sulfur Deposit with Particle Release." Energies 13, no. 6 (2020): 1522. http://dx.doi.org/10.3390/en13061522.

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Sulfur deposition commonly occurs during the development of a high-sulfur gas reservoirs. Due to the high gas flow velocity near the wellbore, some of the deposited sulfur particles re-enter the pores and continue to migrate driven by the high-speed gas flow. The current mathematical model for sulfur deposition ignores the viscosity between particles, rising flow caused by turbulence, and the corresponding research on the release ratio of particles. In order to solve the above problems, firstly, the viscous force and rising force caused by turbulence disturbance are introduced, and the critica

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17

Yokoyama, Seiji, and Katsuyoshi Saito. "Synthesis of Ultrafine Particles of Iron and Iron Nitride by Evaporation of Iron in Gas Mixtures of Argon and Ammonia or Argon and Nitrogen." Materials Science Forum 561-565 (October 2007): 1047–50. http://dx.doi.org/10.4028/www.scientific.net/msf.561-565.1047.

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As a series of fundamental study on the gas evaporation method, a levitation-melted iron was evaporated in the gas mixtures of argon + ammonia, argon + nitrogen to synthesize ultrafine particles of iron nitride that got attention as one of the magnetic materials. The particles that were obtained in the gas mixture of argon and nitrogen were α-Fe. But nitrogen was chemisorbed on the surface of the particle, because nitrogen content in the particles was larger than the solubility of nitrogen in iron. The particles that formed in the mixed gas of argon and ammonia were Fe4N. The mean size of the

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Alquaity, Awad B. S., and Bekir S. Yilbas. "Investigation of Spatter Trajectories in an SLM Build Chamber under Argon Gas Flow." Metals 12, no. 2 (2022): 343. http://dx.doi.org/10.3390/met12020343.

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Spatter particles ejected from the melt pool during selective laser melting processes can get redeposited on the build plate region and impact final part quality. Although an inert gas flow is used to purge the spattered particles away from the build plate region, some of the spatter particles get redeposited on the plate region leading to increased porosity and surface roughness. In this regard, the current study focuses on the numerical modeling of the interactions between the inert gas flow and spatter particles by using the discrete phase model. A Renishaw AM250 build chamber is used as th

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Kumar,, Anoop, Varun, Prashant Kumar, and S. K. Singal. "Performance of A Venturi Scrubbers in Intermediate Drop Reynolds Number Regime for Small Particles at Different Throat Length and Throat Gas Velocity." Asian Journal of Water, Environment and Pollution 6, no. 2 (2009): 7–13. http://dx.doi.org/10.3233/ajw-2009-6_2_02.

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Venturi scrubbers are devices where particle-laden gas (air) is cleaned of particles by capture on water drops. A high relative velocity at throat between drops and particles moving with gas enhances capture of particles. The present model estimates penetration (fraction of un-collected particles) of small particles (less than 3 mm) in intermediate drop Reynolds number (1 < ReD < 1000). In this model of venturi scrubber where intermediate drop Reynolds number effects are accounted for show reasonably good agreement with available experimental data. Venturi scrubber is found to be effecti

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20

Medvedev, Yu D. "On gas productivity of elongated cometary nucleus in rotation." International Astronomical Union Colloquium 173 (1999): 211–16. http://dx.doi.org/10.1017/s0252921100031432.

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AbstractDynamics and distribution of dust and ice particles in the cometary head is investigated for the elongated nucleus in rotation. Three kinds of particles are considered: the dust particles, the ones with volatile fraction and the ice ones. The particles with volatile fraction and sublimated from larger particles are in the cometary head for rather a long time and some abundance of particles and gas can be observed in the region of the head facing the Sun.To estimate the influence of dust density on the gas productivity a numerical simulation was done. The results show that the presence

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21

Dr. W.S. Abdul Wahab. "Coating Technology By Two – Phase (Cold gas – Solid particles) Flow." journal of the college of basic education 21, no. 87 (2022): 157–69. http://dx.doi.org/10.35950/cbej.v21i87.8862.

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The surface coating process which is known as a cold spray (CS) of solid particles is performed by acceleration the solid particles for a certain metal to supersonic speeds through nozzle gas flow , are subsequently deposited by impact onto surface . Also this paper presents an analytical model for (CS) process , by assuming one dimensional isentropic flow , to demonstrate the dynamics of dilute two – phase (powder particles plus carrier gas) flow . Furthermore the equations for particle model are introduced , when heat transfers between the solid particles and assumed gas. The velocity

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22

Shorinov, О., and S. Polyvianyi. "DETERMINATION OF ENERGY PARAMETERS OF Ni+Al2O3 POWDER PARTICLES IN A SUPERSONIC NOZZLE DURING COLD GAS-DYNAMIC SPRAYING USING THE ANALYTICAL METHOD." Innovative Materials and Technologies in Metallurgy and Mechanical Engineering, no. 2 (January 9, 2023): 64–70. http://dx.doi.org/10.15588/1607-6885-2022-2-11.

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Purpose. To calculate the temperature and velocity of nickel and aluminum oxide particles in the supersonic flow in the low-pressure cold gas-dynamic spraying nozzle. To investigate the effect of gas parameters at the nozzle inlet, in particular temperature and pressure, on the velocity and temperature of particles at the nozzle outlet. Research methods. The calculation of the temperature-velocity characteristics of the powder particles is performed after determining the parameters of the gas flow in the supersonic nozzle channel using well known gas-dynamic dependencies. The initial dat

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23

Nath, G. "A self-similar solution for shock waves in conducting rotating non-ideal dusty gas medium with monochromatic radiation and magnetic field." Zeitschrift für Naturforschung A 77, no. 4 (2022): 379–401. http://dx.doi.org/10.1515/zna-2021-0292.

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Abstract In this paper, the cylindrical shock wave propagation in a perfectly conducting rotating mixture of micro size dust particles and van der Waal gas with magnetic field either axial or azimuthal and monochromatic radiation is investigated. The effect of thermal radiation is included in the energy equation of the governing system. In our study, it is assumed that the flux of radiation moves in the mixture of particles and real gas with invariable intensity and the shock wave is moving appositive to the direction of radiation heat flux and the energy is engrossed behind the cylindrical sh

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24

Isayeva, S. A. "The effect of gas velocity on the specification of inner diameter of production tubing." Azerbaijan Oil Industry, no. 11 (November 15, 2021): 30–33. http://dx.doi.org/10.37474/0365-8554/2021-11-30-33.

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Based on the gas dynamics laws, the method of gas well calculation considering the solid particles in the flow is offered. The equation for the motion of gas with solid particles in various operation regimes of gas well is suggested. Obtained equations allow to specify the velocity of upwardly moving gas stream considering the rate of solid particles, to define the most optimum conditions for the extraction of particles in the borehole of gas well. The impact of the main parameters of gas well in the extraction process of solid phase has been considered. It should be noted that the improvement

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25

Wang, K. Y., and W. W. Yuen. "Rapid Heating of Gas/Small Particle Mixture." Journal of Solar Energy Engineering 109, no. 2 (1987): 143–49. http://dx.doi.org/10.1115/1.3268191.

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The concept of using a mixture of particles and air as a medium to absorb radiative energy has been proposed for various applications. In this paper, carbon particles mixed with gas form a medium that absorbs radiation from sources such as concentrated solar energy. A single-particle, two-temperature model is used to study the transient temperature of the particle/gas mixture as it undergoes a constant pressure expansion process. The results indicate that for particles smaller than 1 μm in diameter, the surrounding air can be heated as quickly as the particles, while for particles larger than

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26

Jiang, Zhaohua, Takuya Tsuji, Jun Oshitani, Kimiaki Washino, and Toshitsugu Tanaka. "Reverse to forward density segregation depending on gas inflow velocity in vibrated fluidized beds." Physics of Fluids 35, no. 3 (2023): 033313. http://dx.doi.org/10.1063/5.0138556.

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Particle density segregations in vibrated fluidized beds depending on gas inflow velocity under the same vertical vibration condition are studied. Coarse-graining discrete element method and computational fluid dynamics numerical simulations are employed to capture the behaviors of reverse segregation in which heavy particles are located above light particles at zero gas inflow velocity or at velocities considerably lower than the minimum fluidization velocity of light particles. Furthermore, upon increasing the gas inflow velocity slightly, the forward segregation occurs, such that heavy part

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27

Gomes, J. F., R. M. Miranda, P. A. Carvalho, and M. L. Quintino. "The effect of metal transfer modes and shielding gas composition on the emission of ultrafine particles in MAG steel welding." Soldagem & Inspeção 19, no. 2 (2014): 168–76. http://dx.doi.org/10.1590/0104-9224/si1902.09.

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The present study aims to characterize ultrafine particles emitted during gas metal arc welding of mild steel and stainless steel, using different shielding gas mixtures, and to evaluate the effect of metal transfer modes, controlled by both processing parameters and shielding gas composition, on the quantity and morphology of the ultrafine particles. It was found that the amount of emitted ultrafine particles (measured by particle number and alveolar deposited surface area) are clearly dependent from the main welding parameters, namely the current intensity and the heat input of the welding p

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Bikkulov, Rustem Ya, Andrey V. Dmitriev, Vadim E. Zinurov, and Guzel R. Badretdinova. "Separation of Fine Particles from Gas in Paint-Spraying Booths." MATEC Web of Conferences 346 (2021): 03070. http://dx.doi.org/10.1051/matecconf/202134603070.

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Nowadays, at production facilities with paint-spraying booths that use paint and varnish materials to cover the surfaces of product, the problem of gas flow contamination with finely dispersed solid particles of dust and rubbish, which negatively affect the quality of products, is increasingly being raised. In order to minimize the content of solid particles in the gas flow, coarse and fine filters are installed in the paint-spraying booths, which prevent dust particles from entering the surface of products. However, the existing purification devices have a number of disadvantages that affect

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He, Jie, Xiang Huang, and Pei Cao. "Fine Particle Migration in a Gas Hydrate Sand: Single- and Two-Phase Fluid Using a Device for Observation at the Pore Scale." Journal of Marine Science and Engineering 12, no. 1 (2024): 109. http://dx.doi.org/10.3390/jmse12010109.

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The production of natural gas hydrates will change the cementation strength, porosity, and effective stress in the stratum, which may lead to engineering and geological disasters. Sand production is a phenomenon where sand particles are carried out of the reservoir along with fluids during gas extraction, posing challenges to safe and sustainable production. This study explored the mechanism of fine particle migration in multiphase flow by a microscopic visualization test device. The device can inject a gas–liquid–solid phase at the same time and allow real-time observation. Experimental tests

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Li, Wen-Jun, Er-Wei Shi, Ming-Yuan Tian, Wei-Zhuo Zhong, and Zhi-Wen Yin. "The Synthesis of ZnO Acicular Particles by the Hydrothermal Discharging-gas Method." Journal of Materials Research 14, no. 4 (1999): 1532–37. http://dx.doi.org/10.1557/jmr.1999.0205.

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In this paper, a new hydrothermal method—discharging-gas method—is introduced. ZnO acicular particles with the ratio of length and diameter 16: 1 are synthesized by the hydrothermal discharging-gas method using a mixed solution of Zn(CH3COO)2 with NaNO2 as precursor at 190 °C for 1 h. The effects of reaction temperature and precursor concentration on formation of acicular particles are investigated. The results show that the main factor for formation of acicular particles prepared by the hydrothermal discharging-gas method is the extent of crystallinity of ZnO powders before releasing gas.

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Orlovska, S. G. "Study of the influence of external heat and mass exchange on the features of combustion and extinction of gas suspensions of carbon particles." Physics of Aerodisperse Systems, no. 61 (December 9, 2023): 124–30. http://dx.doi.org/10.18524/0367-1631.2023.61.292232.

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In the work, the regularities of the influence of heat and mass exchange of gas suspensions of carbon particles with the external gas environment on the processes of ignition, burning and quenching at different mass concentrations of carbon fuel are studied. A monodisperse gas suspension of carbon particles located in a gas heated to a high temperature, which contains an oxidant, is considered. As a result of the conducted physical and mathematical modeling, the following characteristics of high-temperature processes were determined: induction period, burning time and time of complete transfor

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32

GANGWAR, P. K., Y. SINGH, and D. KUMAR. "Analytical Study of Cylindrical Imploding Strong Shock in a Uniform Real Dusty Gas." Journal of Ultra Scientist of Physical Sciences Section B 34, no. 6 (2022): 46–64. http://dx.doi.org/10.22147/jusps-b/340601.

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In the present study, we have investigated the motion of cylindrical imploding shock in a real dusty gas having uniform initial density distribution by using (CCW) Chester2 -Chisnell3 -Whitham (1958) method. It is considered that the real dusty gas is the mixture of real gas and a large number of small spherical solid particles of uniform size. Initial volume fraction of the solid particles is also assumed constant in this particular study. The particles do not interact with each other therefore their thermal motion is negligible. Initial density of the medium is taken to be constant and mediu

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Fan, Xuchen, Yuping Fu, Yongliang He, and Liying Sun. "Study on Separation Kinetics of Non-Spherical Single Feeding Particle in the Gas–Solid Separation Fluidized Bed." Separations 11, no. 12 (2024): 341. http://dx.doi.org/10.3390/separations11120341.

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Gas–solid separation fluidized bed is an efficient and clean coal separation technology with a good separation effect for coal particles. However, there is a lack of systematic research on the complex motion behavior of the feeding particles in gas–solid separation fluidized beds. In this study, the separation kinetics of non-spherical single feeding particles in the fluidized bed are examined. The particle sphericity coefficient Φ is introduced to characterize the morphology of irregular coal particles, and the drag coefficient for the feeding particles is modified to verify the suitability o

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Pervan Mursalov, Yusif Alakbarov, Pervan Mursalov, Yusif Alakbarov. "CLEANING OF NATURAL GASES FROM MECHANICAL MIXTURES." PAHTEI-Procedings of Azerbaijan High Technical Educational Institutions 26, no. 03 (2023): 98–103. http://dx.doi.org/10.36962/pahtei26032023-98.

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Mechanical impurities in natural gas are understood as rock particles removed from the well by the gas flow, construction slurries remaining after the completion of the construction of mining gas collection networks and main pipelines, corrosion and erosion products of the internal surfaces of pipelines, as well as water and condensate particles. In this article, existing apparatus and devices for cleaning gases from mechanical mixtures will be reviewed according to the working principle and innovations related to this issue will be discussed. Cleaning of natural gas from mechanical particles

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Li, Liangchao, and Bin Xu. "CFD simulation of gas-liquid floating particles mixing in an agitated vessel." Chemical Industry and Chemical Engineering Quarterly 23, no. 3 (2017): 377–89. http://dx.doi.org/10.2298/ciceq160129052l.

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Gas dispersion and floating particles suspension in an agitated vessel were studied numerically by using computational fluid dynamics (CFD). The Eulerian multi-fluid model along with standard k-? turbulence model was used in the simulation. A multiple reference frame (MRF) approach was used to solve the impeller rotation. The velocity field, gas and floating particles holdup distributions in the vessel were first obtained, and then, the effects of operating conditions on gas dispersion and solid suspension were investigated. The simulation results show that velocity field of solid phase and ga

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Cadiou, Corentin, Yohan Dubois, and Christophe Pichon. "Accurate tracer particles of baryon dynamics in the adaptive mesh refinement code Ramses." Astronomy & Astrophysics 621 (January 2019): A96. http://dx.doi.org/10.1051/0004-6361/201834496.

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We present a new implementation of the tracer particles algorithm based on a Monte Carlo approach for the Eulerian adaptive mesh refinement code RAMSES. The purpose of tracer particles is to keep track of where fluid elements originate in Eulerian mesh codes, so as to follow their Lagrangian trajectories and re-processing history. We provide a comparison to the more commonly used velocity-based tracer particles, and show that the Monte Carlo approach reproduces the gas distribution much more accurately. We present a detailed statistical analysis of the properties of the distribution of tracer

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Vishnyakov, V. I., S. A. Kiro, M. V. Oprya, O. D. Chursina, and A. A. Ennan. "Formation of Particles in Welding Fume Plasmas: Numerical Modeling and Experiment." Ukrainian Journal of Physics 64, no. 5 (2019): 392. http://dx.doi.org/10.15407/ujpe64.5.392.

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Formation of particles in a fume plasma obtained from the gas metal arc welding is investigated by the numerical modeling of the plasma evolution. The model of welding fume plasma evolution includes the following processes: vapor emission from the arc zone and mixing with a shielding gas, plasma formation, nucleation, nucleus growth via the material condensation and coalescence, solidification of liquid droplets into primary particles, and coagulation of primary particles into inhalable particles in the breathing zone. The computed results are compared with experimental data on the specific su

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Chen, Ju Hui, Ting Hu, and Jiu Ru Li. "Large Eddy Simulation of Gas - Second Order Moment of Particle Approach for Riser." Applied Mechanics and Materials 274 (January 2013): 596–99. http://dx.doi.org/10.4028/www.scientific.net/amm.274.596.

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Flow behavior of gas and particles is performed by means of gas–solid two-fluid model with the large eddy simulation for gas and the second order moment for particles in the riser. This study shows that the computed solids volume fractions of two cases are compared with the experimental data using a two-dimensional model. The gas and solid velocity is computed.

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Abdolkarimi, Vahid, and Rasool Mohammadikhah. "CFD Modeling of Particulates Erosive Effect on a Commercial Scale Pipeline Bend." ISRN Chemical Engineering 2013 (October 5, 2013): 1–10. http://dx.doi.org/10.1155/2013/105912.

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The computational fluid dynamics modeling of solid particles hydrodynamic based on the Lagrangian framework for diluted solid-gas flow through 90° gas pipeline bend is carried out to discover the effect of particles size distribution on particles flow pattern and their erosive effect on the bend. Particles size distribution has been obtained experimentally by measuring the sizes of solid particles that are flowing through the gas pipelines of Aghajari gas booster station. Also the erosion rate at the outer wall of the bend is predicted. The pipeline bend under study has a pipe diameter of 56 i

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Kopiyka, O. K., and A. N. Gorlichenko. "The self-ignition of the boron particles gas suspension with an oxide-free surface." Physics of Aerodisperse Systems, no. 62 (December 25, 2024): 97–103. https://doi.org/10.18524/0367-1631.2024.62.320213.

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The paper presents an analysis of the current state of the issue of ignition of dispersed boron systems, as one of the promising components of solid rocket fuels. It was found that the main, limiting role in slowing down the ignition of a gas suspension of boron particles is played by the stage of oxygen diffusion through the film of boron trioxide B2O3 on the surface of boron particles. Various known methods (thermal, chemical) of intensification of the ignition process are considered in detail and a new method is proposed, which involves organizing the process directly on the surface of the

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Jiang, Fang, and Guo Guang Cheng. "Inclusion Removal at the Free Surface of Steel Bath by Bubble Flotation." Advanced Materials Research 399-401 (November 2011): 216–22. http://dx.doi.org/10.4028/www.scientific.net/amr.399-401.216.

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In the present work, physical model experiments were carried out to clarify the inclusion removal at the free surface of steel bath. Polyethylene particles were used to simulate the non-wetting inclusions like alumina and silica. The influence of gas flow rate and bubble size on the inclusion removal at the free surface was evaluated. It is demonstrated that not all particles are removed when they arrive at the free surface of liquid bath, and those which are not removed will get back to the bath. It is found an annular particle layer is formed by the removed particles at free surface, which c

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Shang, Li Yan, Shan Lin Zhao, Zhen Pan, and Teng Long Huang. "Study on Kinetic Characteristics of Solid-Liquid Two-Phase in Transporting Pipeline of Natural Gas Hydrate." Advanced Materials Research 881-883 (January 2014): 1814–18. http://dx.doi.org/10.4028/www.scientific.net/amr.881-883.1814.

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Based on multiphase flow theory and calculation method, the distribution of internal multiphase flow field in the vertical rise pipeline of natural gas hydrate is simulated with FLUENT as a tool and the mixture of natural gas hydrate solid particles and water as a medium. The change rules of velocity field and volume concentration field are described and the effect of solid particles diameter, density and volume concentration of the natural gas hydrate on the pressure loss and resistance loss of pipeline is also analyzed deeply. It provides theoretical basis on transporting of natural gas hydr

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Thomasson, Magnus. "Simulations of Gas Clouds in Interacting Galaxies." International Astronomical Union Colloquium 124 (1990): 749–53. http://dx.doi.org/10.1017/s0252921100005923.

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A companion can induce a varitey of morphological changes in a galaxy. I use N-body simulations to study the effects of different kinds of perturbations on the dynamics of a disk galaxy. The model is two-dimensional, with a disk consisting of about 60,000 particles. Most of the particles (80 %) represent the old stellar population with a high velocity dispersion, while the rest (20 %) represent gas clouds with a low velocity dispersion. Initially, the velocity dispersion corresponds to Q = 1 for the “star” particles, and Q = 0 for the “gas” particles, where Q is Toomre’s (1964) stability param

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van Ommen, J. "(Invited) Gas Phase Coating of Particles for Energy Applications." ECS Meeting Abstracts MA2022-02, no. 31 (2022): 1114. http://dx.doi.org/10.1149/ma2022-02311114mtgabs.

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Advanced materials, often relying on nanostructured particles as building blocks, are crucial in meeting grand challenges in energy: battery materials, electrocatalysts, phase change materials, etc. etc. Gas phase deposition techniques, such as chemical vapour deposition (CVD), atomic layer deposition (ALD), and molecular layer deposition (MLD) are excellent methods to make such nanostructured particles: particles of which the surface is either covered by an ultrathin film or by nanoclusters. When combined with proper particle handling, these coating methods are also very well suitable for sca

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HOGENDOORN, J. A., W. P. M. VAN SWAAIJ, and G. F. VERSTEEG. "CONTINUOUS GAS SEPARATION WITH LIQUID IMPREGNATED PARTICLES IN GAS-SOLID REACTORS." Chemical Engineering Communications 144, no. 1 (1996): 19–50. http://dx.doi.org/10.1080/00986449608936443.

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Oman, Janez, and Peter Novak. "Volumetric absorption in gas—properties of particles and particle-gas suspensions." Solar Energy 56, no. 6 (1996): 597–606. http://dx.doi.org/10.1016/0038-092x(96)00009-6.

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Pongó, Tivadar, Dmitry Puzyrev, Kirsten Harth, Ralf Stannarius, and Raúl Cruz Hidalgo. "Continuously heated granular gas of elongated particles." EPJ Web of Conferences 249 (2021): 04003. http://dx.doi.org/10.1051/epjconf/202124904003.

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Some years ago, Harth et al. experimentally explored the steady state dynamics of a heated granular gas of rod-like particles in microgravity [K. Harth et al. Phys. Rev. Lett. 110, 144102 (2013)]. Here, we report numerical results that quantitatively reproduce their experimental findings and provide additional insight into the process. A system of sphero-cylinders is heated by the vibration of three flat side walls, resulting in one symmetrically heated direction, one non-symmetrically heated direction, and one non-heated direction. In the non-heated direction, the speed distribution follows a

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YAMAZOE, Noboru, Norio MIURA, and Jun TAMAKI. "Ultrafine particles as semiconductor gas sensor materials." RESOURCES PROCESSING 37, no. 2 (1990): 75–81. http://dx.doi.org/10.4144/rpsj1986.37.75.

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Hakonen, Aron, Anders Karlsson, Lena Lindman, Oliver Büker, and Karine Arrhenius. "Particles in fuel-grade Liquefied Natural Gas." Journal of Natural Gas Science and Engineering 55 (July 2018): 350–53. http://dx.doi.org/10.1016/j.jngse.2018.05.005.

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Sethi, S. A. "Generation of small particles by gas fluidization." Journal of Aerosol Science 28 (September 1997): S539—S540. http://dx.doi.org/10.1016/s0021-8502(97)85269-x.

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