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Готові списки джерел за темами / Single-phase flow numerical simulation / Статті в журналах

Щоб переглянути інші типи публікацій з цієї теми, перейдіть за посиланням: Single-phase flow numerical simulation.

Статті в журналах з теми "Single-phase flow numerical simulation"

Автор: Grafiati

Опубліковано: 3 червня 2025

Оновлено: 31 липня 2025

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1

Trimulyono, Andi, S. Samuel, and Muhammad Iqbal. "Sloshing Simulation of Single-Phase and Two-Phase SPH using DualSPHysics." Kapal: Jurnal Ilmu Pengetahuan dan Teknologi Kelautan 17, no. 2 (2020): 50–57. http://dx.doi.org/10.14710/kapal.v17i2.27892.

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The sloshing phenomenon is one of the free surface flow that can endanger liquid cargo carriers such as ships. Sloshing is defined as the resonance of fluid inside a tank caused by external oscillation. When sloshing is close to the natural frequency of the tank it could endanger ships. Particle method has the advantages to be applied because sloshing is dealing with free surface. One of the particle methods is Smoothed Particle Hydrodynamics (SPH). In this study, compressible SPH was used as a result of the pressure oscillation, which exists because of the effect of density fluctuation as nat

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2

Hua, Hong, Xiao Bing Liu, Shun Bing Ou, and Yong Zhong Zeng. "Numerical Simulation of 3D Solid-Liquid Two-Phase Turbulence Flow in Axial-Flow Pump Impeller." Applied Mechanics and Materials 212-213 (October 2012): 1237–43. http://dx.doi.org/10.4028/www.scientific.net/amm.212-213.1237.

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With the use of the RNG k-ε turbulence model and the SIMPLEC algorithm, as well as after the secondary development of the software Fluent, the velocity field and pressure field of a axial flow impeller were numerically simulated in the single-phase (clear water) and the solid-liquid two-phase conditions. The distributions of pressure, velocity and solid concentration in the impeller under the single-phase flow and the solid-liquid two-phase flow conditions were compared. This study has shown that the numerical simulation results are the same as the actual situation.

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3

Teyssedou, A., A. Tapucu, and R. Camarero. "Blocked Flow Subchannel Simulation Comparison With Single-Phase Flow Data." Journal of Fluids Engineering 114, no. 2 (1992): 205–13. http://dx.doi.org/10.1115/1.2910017.

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The time integral of the local instantaneous conservation laws has been used as the starting point to write a subchannel model. The assumption of an ergodic stationary process has made possible further spatial integration of the resulting equations. The SIMPLER algorithm is adapted for the numerical solution. An adequate blockage model assures an overall momentum balance over the discretized cell elements. Comparison of the predictions of the proposed model with the experimental data confirms that it is capable of handling blockages of up to 90 percent of the flow area. Presently, this model o

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4

Anciaux-Sedrakian, Ani, Laura Grigori, Zakariae Jorti, and Soleiman Yousef. "Adaptive linear solution process for single-phase Darcy flow." Oil & Gas Science and Technology – Revue d’IFP Energies nouvelles 75 (2020): 54. http://dx.doi.org/10.2516/ogst/2020050.

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This article presents an adaptive approach for solving linear systems arising from self-adjoint Partial Differential Equations (PDE) problems discretized by cell-centered finite volume method and stemming from single-phase flow simulations. This approach aims at reducing the algebraic error in targeted parts of the domain using a posteriori error estimates. Numerical results of a reservoir simulation example for heterogeneous porous media in two dimensions are discussed. Using the adaptive solve procedure, we obtain a significant gain in terms of the number of time steps and iterations compare

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5

BÉG, O. ANWAR, M. M. RASHIDI, M. AKBARI, and A. HOSSEINI. "COMPARATIVE NUMERICAL STUDY OF SINGLE-PHASE AND TWO-PHASE MODELS FOR BIO-NANOFLUID TRANSPORT PHENOMENA." Journal of Mechanics in Medicine and Biology 14, no. 01 (2014): 1450011. http://dx.doi.org/10.1142/s0219519414500110.

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A computational fluid dynamics (CFD) simulation of laminar convection of Al 2 O 3–water bio-nanofluids in a circular tube under constant wall temperature conditions was conducted, employing a single-phase model and three different two-phase models (volume of fluid (VOF), mixture and Eulerian). The steady-state, three-dimensional flow conservation equations were discretised using the finite volume method (FVM). Several parameters such as temperature, flow field, skin friction and heat transfer coefficient were computed. The computations showed that CFD predictions with the three different two-p

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6

Al-Dulaimi, M. J., F. A. Hamad, A. A. Abdul Rasool, and K. A. Ameen. "Effect of sand particles on flow structure of free jet from a nozzle." Journal of Mechanical Engineering and Sciences 13, no. 3 (2019): 5542–61. http://dx.doi.org/10.15282/jmes.13.3.2019.21.0447.

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The Characteristics of single and two- phase flow from a circular turbulent free jet from a nozzle of 10 mm diameter were investigated experimentally and numerically. The measurements were conducted for ReJ = 10007 - 31561. The velocity was measured at location from the nozzle y/D (0-8) in axial and radial directions. The two phase measurement were done by using natural construction sand as a solid phase of sizes (220,350,550) µm and loading ratios (mass flow ratio of sand to mass flow rate of air) in the range (0.18-1.38). Two phase air velocity of jet showed that the introducing of natural s

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7

Ba, Te, Arthur Teck Bin Lim, and Chang Wei Kang. "Numerical Study of the Single-Phase and Two-Phase Flow in a Centrifugal Pump." Applied Mechanics and Materials 307 (February 2013): 215–18. http://dx.doi.org/10.4028/www.scientific.net/amm.307.215.

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The paper presents the numerical investigation of a radial flow centrifugal pump with 2D curvature blade geometry. The geometry is based on the experimental equipment by Anagostopulos. Single phase (water) flow is modeled with a normal mass flow rate and rotation speed. Pressure distribution and fluid streamlines are evaluated and visualized. An extension of the model to transient flow and two-phase flow simulation has been done to see the effect of impeller rotation and gas entrainment in the centrifugal operation procedure.

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8

Xu, Lan, Jiang-Hui Zhao, and Hua Liu. "Numerical simulation for the single-bubble electrospinning process." Thermal Science 19, no. 4 (2015): 1255–59. http://dx.doi.org/10.2298/tsci1504255x.

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This paper studies numerically the two-phase flow in the single-bubble electrospinning process by solving the modified Navier-Stokes equations under the influence of electric field, and the interface between the two fluids has been determined by using the volume of fluids method. A realizable k-? model is used to model the turbulent viscosity. The numerical results offer in-depth insight into physical understanding of many complex phenomena which cannot be fully explained experimentally.

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9

Li, Daheng, Yun Guo, Hui Bao, Jun Xiao, and Changhong Peng. "Numerical simulation of single-phase flow in a single square tube with blockage." Sustainable Energy Technologies and Assessments 44 (April 2021): 101053. http://dx.doi.org/10.1016/j.seta.2021.101053.

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10

Chen, Xianghui, Brenton S. McLaury, and Siamack A. Shirazi. "A Comprehensive Procedure to Estimate Erosion in Elbows for Gas/Liquid/Sand Multiphase Flow." Journal of Energy Resources Technology 128, no. 1 (2005): 70–78. http://dx.doi.org/10.1115/1.2131885.

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A comprehensive procedure that combines mechanistic analysis and numerical simulation approaches is proposed to estimate the erosion in elbows for gas/liquid/sand particle multiphase flow systems. The erosion problem in multiphase flow is approximately transferred to one in single-phase flow by introducing the effective sand mass ratio and a representative single-phase flow to which a single-phase computational-fluid-dynamics-based erosion-prediction model can be applied. Erosion in elbows is calculated for various multiphase flow patterns and compared to experimental data in the literature. R

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11

Salanon, Rémi, Loïc Ancian, Najib Fazail, and Claude Souprayen. "Globe valve in single phase flow: experimental and CFD analysis." Journal of Physics: Conference Series 2721, no. 1 (2024): 012001. http://dx.doi.org/10.1088/1742-6596/2721/1/012001.

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Abstract Flow-induced vibration (FIV) poses risks to engineering systems, prompting efforts for safety. Valves, crucial for fluid control, can induce turbulence-related mechanical loads, leading to vibration and potential failures. This paper combines experimental and numerical methods, using computational fluid dynamics (CFD) for flow analysis. A test loop with nine pressure sensors assesses water flow through a globe valve, testing various conditions. Dimensionless power spectral density (PSD) of pressure fluctuations is compared with CFD results. Steady simulations precede computational flu

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12

Toledo-Melchor, M. M., C. del C. Gutiérrez-Torres, J. A. Jiménez-Bernal, et al. "Numerical Simulation of Flow Behavior within a Venturi Scrubber." Mathematical Problems in Engineering 2014 (2014): 1–7. http://dx.doi.org/10.1155/2014/106329.

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The present work details the three-dimensional numerical simulation of single-phase and two-phase flow (air-water) in a venturi scrubber with an inlet and throat diameters of 250 and 122.5 mm, respectively. The dimensions and operating parameters correspond to industrial applications. The mass flow rate conditions were 0.483 kg/s, 0.736 kg/s, 0.861 kg/s, and 0.987 kg/s for the gas only simulation; the mass flow rate for the liquid was 0.013 kg/s and 0.038 kg/s. The gas flow was simulated in five geometries with different converging and diverging angles while the two-phase flow was only simulat

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13

Oychueva, B. R. "NUMERICAL SIMULATION OF TWO-PHASE FLOW." Heralds of KSUCTA, №1, 2022, no. 1-2022 (March 14, 2022): 202–9. http://dx.doi.org/10.35803/1694-5298.2022.1.202-209.

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This article presents the results of a multiphase flow numerical calculations. The numerical modeling method used in this work includes a volume of fluid model and immersed boundary method for studying the flow structure. The simulation was carried out on a structured Cartesian adaptive grid, where the immersed boundary is a circular pipe. The volume of the liquid, based on the piecewise linear interface reconstruction, allows us to determine the liquid-liquid boundary. The Navier-Stokes equations are discretized over the entire domain using a finite-difference scheme. The possibilities of the

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14

Platonov, Dmitriy, Andrey Sentyabov, Sergey Shtork, Sergey Skripkin, and Dmitriy Dekterev. "NUMERICAL SIMULATION OF THE FLOW WITH DISPERSE PHASE IN A TANGENTIAL VORTEX CHAMBER." Eurasian Journal of Mathematical and Computer Applications 13, no. 1 (2025): 100–107. https://doi.org/10.32523/2306-6172-2025-13-1-100-107.

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The flow with a disperse phase in a tangential vortex chamber at high swirl numbers was studied using a numerical methods. The swirling flow is created using nozzles directed at an angle to the chamber axis. The numerical flow model was based on computational fluid dynamics methods and described the turbulent flow of water. Turbulence was simulated using the large eddy simulation method. Based on the results of single-phase flow simulation, particle motion was calculated using the Lagrange approach. The results of the single-phase flow simulation are consistent with the data from the correspon

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15

Luo, Liqiang, Hanzhong Tao, and Yannan Li. "The Scaling Analysis and Numerical Simulation of Single-phase Natural Circulation." Journal of Physics: Conference Series 2592, no. 1 (2023): 012039. http://dx.doi.org/10.1088/1742-6596/2592/1/012039.

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Abstract In this work, scaling analysis and numerical simulation of the single-phase natural circulation loop with water are presented. First, grid-dependency testing and model validation are performed. Then, according to the assumption of the boundary conditions, the effect of the heat input and structural parameters on the heat transfer characteristic is studied, including the boundary condition and temperature of the steam fluid. The results show that the scaling model can accurately express the flow heat transfer characteristics of the original model, and can reach a steady state under dif

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16

Yuan, Xiao Ming, Hui Jun Zhao, and Jing Yi Qu. "Numerical Simulation of Double Inlet Cylinder Cyclone Using CFD." Applied Mechanics and Materials 275-277 (January 2013): 558–61. http://dx.doi.org/10.4028/www.scientific.net/amm.275-277.558.

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Designed a new type of double inlet cylindrical cyclone. For search the separation performance in a cylindrical cyclone. By use of CFD，applied the RSM turbulence model and Euler two-phase flow method and ASM which to simulate separation process and flow field within a double inlet cylindrical cyclone. Then compared with the single inlet cyclone，obtained velocity distribution. Analyzed the differences of discrete phase volume fraction between different viscosity. The results show that the new-style cyclone caught more stable fluid field and higher separation efficiency. And when the viscosity i

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17

Sawicki, Jacek, Krzysztof Krupanek, Wojciech Stachurski, and Victoria Buzalski. "Algorithm Scheme to Simulate the Distortions during Gas Quenching in a Single-Piece Flow Technology." Coatings 10, no. 7 (2020): 694. http://dx.doi.org/10.3390/coatings10070694.

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Low-pressure carburizing followed by high-pressure quenching in single-piece flow technology has shown good results in avoiding distortions. For better control of specimen quality in these processes, developing numerical simulations can be beneficial. However, there is no commercial software able to simulate distortion formation during gas quenching that considers the complex fluid flow field and heat transfer coefficient as a function of space and time. For this reason, this paper proposes an algorithm scheme that aims for more refined results. Based on the physical phenomena involved, a nume

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18

Shi, Baocheng, and Jinjia Wei. "Numerical Simulation of 3D Solid-Liquid Turbulent Flow in a Low Specific Speed Centrifugal Pump: Flow Field Analysis." Advances in Mechanical Engineering 6 (January 1, 2014): 814108. http://dx.doi.org/10.1155/2014/814108.

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For numerically simulating 3D solid-liquid turbulent flow in low specific speed centrifugal pumps, the iteration convergence problem caused by complex internal structure and high rotational speed of pump is always a problem for numeral simulation researchers. To solve this problem, the combination of three measures of dynamic underrelaxation factor adjustment, step method, and rotational velocity control means according to residual curves trends of operating parameters was used to improve the numerical convergence. Numeral simulation of 3D turbulent flow in a low specific speed solid-liquid ce

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19

Sheikh, Md Al Amin. "Numerical simulation of blood flow in Cerebral aneurysms using two-phase model." Asian Journal Of Medical Technology 1, no. 1 (2021): 1–17. http://dx.doi.org/10.32896/ajmedtech.v1n1.1-17.

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ABSTRACT: Computational fluid dynamic (CFD) simulation techniques have played an essential role in simulating and understanding the initiation, growth, and rupture of cerebral aneurysms. Hemodynamic parameters are mainly used to examine the rupture risk status of cerebral aneurysms using blood flow CFD simulation. Blood was considered as single-phase flow model with both Newtonian and non-Newtonian to predict the rupture risk analysis. However, to better understand predicting the risk of cerebral aneurysm rupture, blood requires two-phase, such as plasma and red blood cells (RBCs), also known

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20

Frank, Th, H. Schneider, K. Bernert, and K. Pachler. "Parallel Numerical Prediction of Pulverized Coal Particle Flow in Bifurcator-Type Flow Splitters." Journal of Pressure Vessel Technology 125, no. 1 (2003): 1–6. http://dx.doi.org/10.1115/1.1526856.

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This paper deals with the numerical simulation of two-phase flows based on the solution of the Navier-Stokes equations with a k−ε turbulence model for the gas phase and a particle tracking model of the disperse phase fulfilling the framework of the Eulerian-Lagrangian (PSI-cell) approach. The numerical procedures for the two phases are based on multigrid and domain decomposition methods applied to a block-structured grid. Due to the enormous numerical effort of such flow simulations the entire solving procedure has been parallelized for computers of MIMD architecture. The paper gives a short d

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21

Qiao, Shouxu, Wenyi Zhong, Shuang Wang, Lanxin Sun, and Sichao Tan. "Numerical simulation of single and two-phase flow across 90° vertical elbows." Chemical Engineering Science 230 (February 2021): 116185. http://dx.doi.org/10.1016/j.ces.2020.116185.

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22

Arbogast, Todd. "Analysis of the Simulation of Single Phase Flow Through a Naturally Fractured Reservoir." SIAM Journal on Numerical Analysis 26, no. 1 (1989): 12–29. http://dx.doi.org/10.1137/0726002.

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23

Haidour, Ahmed, Achour Mansouri, Hamou Soualmi, and Boumedien Touati. "Air cooling condenser simulation and numerical modeling in a steady-state." STUDIES IN ENGINEERING AND EXACT SCIENCES 5, no. 2 (2024): e5882. http://dx.doi.org/10.54021/seesv5n2-034.

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Due to their crucial significance in cooling equipment, air-cooled condensers have been extensively studied in scientific studies to increase their quality and efficiency. The refrigerant fluid travels via three different locations in the condenser. First, a single-phase fluid flow has overheated gas at the compressor outlet. Subsequently, a two-phase fluid with a gas and a liquid component flows. In the end, the liquid moves in a single phase. This study is predicated on the fluid's compressibility and the fixed diet in the three circumstances. The heat and mass transport phenomena between li

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24

Yang, Dong, Zhiqin Kang, and Yangsheng Zhao. "Mechanism of the Gas-Liquid Two-Phase Chaotic Flow in Single Fracture." Geofluids 2020 (August 25, 2020): 1–11. http://dx.doi.org/10.1155/2020/8860058.

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The seepage of gas-liquid two-phase flow in fracture is a commonly found phenomenon in nature. To reveal the underlying mechanism and the critical condition of the chaos occurrence, a stochastic gas-liquid two-phase flow seepage model is established, and then investigated through a numerical simulation and a horizontal Hele-Shaw experiment. The numerical simulation and laboratory experiment results show that the seepage chaos of gas-liquid two-phase flow takes place when the relative saturation is in the range of gas relative saturation 44%-70%, and the occurrence probability can be expressed

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25

Hu, Yong, Jiong Wei, Tao Li, et al. "Numerical Simulation of Fluid Flow in Carbonate Rocks Based on Digital Rock Technology." Energies 15, no. 10 (2022): 3748. http://dx.doi.org/10.3390/en15103748.

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Strong heterogeneity, low matrix permeability, and complex oil–water interaction make the fluid flow in carbonate rocks extremely complicated. In this study, we quantitatively characterize and simulate single-phase and multiphase flows with multiscale pore–vug–fracture structures involved in the carbonate reservoir developments. The main studies and conclusions include: (i) The CT technology is utilized to characterize the pores, fractures, and vugs of carbonate cores at multiple scales. It is found that even if the CT resolution reaches 0.5 μm, the pores of the core are still unconnected as a

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26

Ishigaki, Masahiro, Tadashi Watanabe, and Hideo Nakamura. "ICONE19-43830 Numerical Simulation of Two-phase Critical Flow with the Phase Change in the Nozzle Tube." Proceedings of the International Conference on Nuclear Engineering (ICONE) 2011.19 (2011): _ICONE1943. http://dx.doi.org/10.1299/jsmeicone.2011.19._icone1943_319.

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27

Carcione, José M., Stefano Picotti, Juan E. Santos, Ayman Qadrouh, and Hashim S. Almalki. "Numerical simulation of two-phase fluid flow." Journal of Petroleum Exploration and Production Technology 4, no. 3 (2014): 233–43. http://dx.doi.org/10.1007/s13202-014-0109-y.

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28

ZEIDAN, D., A. SLAOUTI, E. ROMENSKI, and E. F. TORO. "NUMERICAL SOLUTION FOR HYPERBOLIC CONSERVATIVE TWO-PHASE FLOW EQUATIONS." International Journal of Computational Methods 04, no. 02 (2007): 299–333. http://dx.doi.org/10.1142/s0219876207000984.

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We outline an approximate solution for the numerical simulation of two-phase fluid flows with a relative velocity between the two phases. A unified two-phase flow model is proposed for the description of the gas–liquid processes which leads to a system of hyperbolic differential equations in a conservative form. A numerical algorithm based on a splitting approach for the numerical solution of the model is proposed. The associated Riemann problem is solved numerically using Godunov methods of centered-type. Results show the importance of the Riemann problem and of centered schemes in the soluti

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29

Huang, Jun, Guang Yin, Muk Chen Ong, Dag Myrhaug, and Xu Jia. "Numerical Investigation of Scour Beneath Pipelines Subjected to an Oscillatory Flow Condition." Journal of Marine Science and Engineering 9, no. 10 (2021): 1102. http://dx.doi.org/10.3390/jmse9101102.

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The present study carries out two-dimensional numerical simulations to investigate scour beneath a single pipeline and piggyback pipelines subjected to an oscillatory flow condition at a Keulegan–Carpenter (KC) number of 11 using SedFoam (an open-source, multi-dimensional Eulerian two-phase solver for sediment transport based on OpenFOAM). The turbulence flow is resolved using the two-phase modified k−ω 2006 model. The particle stresses due to the binary collisions and enduring contacts among the sediments are modeled using the rheology model of granular flow. The present numerical model is va

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30

Zhou, Ai Min, Yong Jiang, Jian Chen, and Shi Zhong Wang. "Numerical Simulation for Subcooled Boiling Flow Process of High Pressure Liquid." Advanced Materials Research 532-533 (June 2012): 257–61. http://dx.doi.org/10.4028/www.scientific.net/amr.532-533.257.

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A numerical simulation has been performed for subcooled boiling process of high pressure liquid. On the basis of two-fluid model, the RPI model is used to calculate the mass transfer on the heating wall between gas-liquid two phases. The results show there is an obvious turning point on wall temperature along with flow direction，which demonstrates the onset point of subcooled boiling according to the variation of wall temperature. The fluid velocity isn’t in linear increase, which increases gradually at first and then increases sharply, which is the similar with that of void fraction. The gas-

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31

Tran, Minh Cong, Hai Anh Nguyen, and Dat Tien Nguyen. "Numerical Simulation of Two-Phase Slug Flow Liquid-Carryover in a Converging T-junction." International Journal of Materials, Mechanics and Manufacturing 8, no. 3 (2020): 94–103. http://dx.doi.org/10.18178/ijmmm.2020.8.3.490.

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32

Martel, Simon, Laura Matteo, Gédéon Mauger, Timo Bouvard, and Regiane Fortes-Patella. "Streamline rotodynamic pump model for two-phase flow simulation." IOP Conference Series: Earth and Environmental Science 1411, no. 1 (2024): 012063. https://doi.org/10.1088/1755-1315/1411/1/012063.

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Abstract This study is concerned with the simulation of water-vapor two-phase flows in pressurized water reactors (PWR) primary pumps. The correct modeling of such flows is essential to predict the consequences of a Loss Of Coolant Accident (LOCA), an accident scenario involving a rupture in the reactor primary circuit. During such accidents, pressure loss leads to important coolant vaporization in the circuits, pumps and other system components. A review of turbomachinery streamline models, used to represent pumps in system codes, is presented. Particular attention is paid to the model used i

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33

Wang, Yi, Yan Wang, and Zhe Cheng. "Direct Numerical Simulation of Gas-Liquid Drag-Reducing Cavity Flow by the VOSET Method." Polymers 11, no. 4 (2019): 596. http://dx.doi.org/10.3390/polym11040596.

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Drag reduction by polymer is an important energy-saving technology, which can reduce pumping pressure or promote the flow rate of the pipelines transporting fluid. It has been widely applied to single-phase pipelines, such as oil pipelining, district heating systems, and firefighting. However, the engineering application of the drag reduction technology in two-phase flow systems has not been reported. The reason is an unrevealed complex mechanism of two-phase drag reduction and lack of numerical tools for mechanism study. Therefore, we aim to propose governing equations and numerical methods o

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34

Xu, Lan, HongYing Liu, Na Si, and Eric Wai Ming Lee. "Numerical simulation of a two-phase flow in the electrospinning process." International Journal of Numerical Methods for Heat & Fluid Flow 24, no. 8 (2014): 1755–61. http://dx.doi.org/10.1108/hff-05-2013-0178.

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Purpose – An electrospinning process is a multi-phase and multi-physics process. The purpose of this paper is to numerically simulate the two-phase flow in the electrospinning process. The numerical results can offer in-depth insight into physical understanding of many complex phenomena which cannot be fully explained experimentally. Design/methodology/approach – The two-phase flow can be calculated by solving the modified Navier-Stokes equations under the influence of electric field and the interface between the two fluids has been determined by using the Volume of Fluids (VOF) method. A real

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35

Luo, Wei, Wenqi Ke, and Ruiquan Liao. "Numerical Simulation and Experimental Investigation of Variable Mass Flow in Horizontal Wellbores: Single-Phase and Multiphase Analysis." Energies 16, no. 16 (2023): 6073. http://dx.doi.org/10.3390/en16166073.

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Considering the current limitations and restricted scope of existing experiments, as well as the absence of corresponding numerical simulation verifications and comparisons, and the lack of actual case studies of variable mass flow calculation and comparison, this study focuses on high production oilfields in the Mideast and South China Sea. The objective is to investigate single-phase and multiphase variable mass flow through numerical and experimental simulations. The study develops linear regression equations to establish the relationship between the mixture pressure drop caused by side flo

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36

Wei, Lihong, and Jaime Honra. "Impact of Rock Cuttings on Downhole Fluid Movement in Polycrystalline Diamond Compact (PDC) Bits, Computational Fluid Dynamics, Simulation, and Optimization of Hydraulic Structures." Fluids 10, no. 1 (2025): 13. https://doi.org/10.3390/fluids10010013.

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The flow occurring at the bottom of a polycrystalline diamond compact (PDC) drill bit involves a complex process made up of drilling fluid and the drilled rock cuttings. A thorough understanding of the bottom-hole flow conditions is essential for accurately evaluating and optimizing the hydraulic structure design of the PDC drill bit. Based on a comprehensive understanding of the hydraulic structure and fluid flow characteristics of PDC drill bits, this study integrates computational fluid dynamics (CFD) with rock-breaking simulation methods to refine and enhance the numerical simulation appro

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37

Qin, Hao, Huicui Chen, and Tong Zhang. "Study on anode single-phase flow pressure drop law of proton exchange membrane fuel cell." Journal of Physics: Conference Series 2534, no. 1 (2023): 012009. http://dx.doi.org/10.1088/1742-6596/2534/1/012009.

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Abstract This article briefly describes the research status of water flooding and pressure drop (PD) of the fuel cell. Then, a mathematical model of the single-phase flow PD of the fuel cell anode is established using hydrodynamics theory and referring to existing research. Then, the three-dimensional fuel cell model is established with Gambit software, and the grid is divided. Then, the numerical simulation of the single-phase flow of the fuel cell is carried out with Fluent software. Through the analysis of the simulation data, the relationship between the fuel cell anode pressure drops and

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38

Horiguchi, Naoki, Hiroyuki Yoshida, Tetsuya Kanagawa, Akiko Kaneko, and Yutaka Abe. "ICONE23-1803 NUMERICAL SIMULATION OF SELF-PRIMING PHENOMENA IN VENTURI SCRUBBER BY TWO-PHASE FLOW SIMULATION CODE TPFIT." Proceedings of the International Conference on Nuclear Engineering (ICONE) 2015.23 (2015): _ICONE23–1—_ICONE23–1. http://dx.doi.org/10.1299/jsmeicone.2015.23._icone23-1_386.

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39

Huang, Jing, Jun Zhang, Hong Zhou He, Ming Fang Lu, and Xiao Liu. "Numerical Simulation and Improved Design of Inner Flow Field on Single Function Shower." Applied Mechanics and Materials 246-247 (December 2012): 423–27. http://dx.doi.org/10.4028/www.scientific.net/amm.246-247.423.

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To reveal the variation of the inner flow field on a single function shower, numerical simulation was conducted for single-phase flow using water as the working medium. The standard k-ε turbulence model is employed to simulate inner flow characteristics. To improve the uniformity of outlet flow, according to the simulation results of the old shower, the mold structural have been modified. The results show that, the outlet shape and different size will affect the internal flow field. According to the old shower analysis of the flow, speed of the outlet fluctuations are more obvious, while the i

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40

Zheng, J. G., B. C. Khoo, and Z. M. Hu. "Simulation of Wave-Flow-Cavitation Interaction Using a Compressible Homogenous Flow Method." Communications in Computational Physics 14, no. 2 (2013): 328–54. http://dx.doi.org/10.4208/cicp.050412.140812a.

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AbstractA numerical method based on a homogeneous single-phase flow model is presented to simulate the interaction between pressure wave and flow cavitation. To account for compressibility effects of liquid water, cavitating flow is assumed to be compressible and governed by time-dependent Euler equations with proper equation of state (EOS). The isentropic one-fluid formulation is employed to model the cavitation inception and evolution, while pure liquid phase is modeled by Tait equation of state. Because of large stiffness of Tait EOS and great variation of sound speed in flow field, some of

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41

Lysenko, Dmitry A. "Large-Eddy Simulation of the Flow Past a Circular Cylinder at Re = 130,000: Effects of Numerical Platforms and Single- and Double-Precision Arithmetic." Fluids 10, no. 1 (2024): 4. https://doi.org/10.3390/fluids10010004.

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Numerical simulations of sub-critical flow past a circular cylinder at Reynolds number Re = 130,000 are performed using two numerical platforms: the commercial, Ansys Fluent, and the open-source, OpenFOAM (finite volume method and large-eddy simulation based on a differential equation for the sub-grid kinetic energy). An overview of the available experimental data and similar large-eddy simulation studies is presented. A detailed analysis of all accumulated data demonstrates satisfactory agreement between them with a dispersion of approximately 20% for the main integral flow parameters. A deta

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42

Pakhomov M. A. and Terekhov V. I. "Effect of sudden constriction of a flat duct on forced convection in a turbulent droplet-laden mist flow." Technical Physics Letters 49, no. 4 (2023): 14. http://dx.doi.org/10.21883/tpl.2023.04.55868.19453.

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Numerical modeling of the flow structure and heat transfer in a gas-droplet turbulent flow in a duct with forward-facing step is carried out. The two-dimensional RANS equations are used in the numerical solution. The Eulerian two-fluid approach is used for describing the flow dynamics and heat transfer in the gaseous and dispersed phases. The turbulence of the carrier phase is described using an elliptical Reynolds stress model with taking the presence of dispersed phase. It is shown that finely-dispersed droplets are involved in the separation recirculation motion of the gas phase. The additi

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43

Boertz, Hendrik, Albert Baars, Janusz T. Cieśliński, and Sławomir Smoleń. "Turbulence Model Evaluation for Numerical Modelling of Turbulent Flow and Heat Transfer of Nanofluids." Applied Mechanics and Materials 831 (April 2016): 165–80. http://dx.doi.org/10.4028/www.scientific.net/amm.831.165.

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In this work, Nusselt number and friction factor are calculated numerically for turbulent pipe flow (Reynolds number between 6000 and 12000) with constant heat flux boundary condition using nanofluids. The nanofluid is modelled with the single-phase approach and the simulation results are compared with experimental data. Ethylene glycol and water, 60:40 EG/W mass ratio, as base fluid and SiO2 nanoparticles are used as nanofluid with particle volume concentrations ranging from 0% to 10%. A prior turbulence model evaluation of k-ε-, k-ω- and k-ω-SST-model revealed substantial deviations between

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44

Ajeeb, Wagd, Monica S. A. Oliveira, Nelson Martins, and S. M. Sohel Murshed. "Numerical approach for fluids flow and thermal convection in microchannels." Journal of Physics: Conference Series 2116, no. 1 (2021): 012049. http://dx.doi.org/10.1088/1742-6596/2116/1/012049.

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Abstract The heat transfer performance of conventional thermal fluids in microchannels is an attractive method for cooling devices such as microelectronic applications. Computational fluid dynamics (CFD) is a very significant research technique in heat transfer studies and validated numerical models of microscale thermal management systems are of utmost importance. In this paper, some literature studies on available numerical and experimental models for single-phase and Newtonian fluids are reviewed and methods to tackle laminar fluid flow through a microchannel are sought. A few case studies

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45

Holešová, Natália, Richard Lenhard, Katarína Kaduchová, and Milan Malcho. "Correlation Coefficients in Lee’s Model of Multiphase Flows." MATEC Web of Conferences 369 (2022): 01001. http://dx.doi.org/10.1051/matecconf/202236901001.

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Анотація:

Multiple technical and biological systems exhibit multiphase flow phenomena. The demands for accurate calculations of the physical phenomena that occur in engineering technologies have increased along with their rapid advancement. However, it is very hard to identify two- and multi-phase flow through experimental measurements, as a result, in addition to experimental measurements, numerical simulations are also performed, which can help improve our physical understanding of the complex phenomenon of phase transformations. The goal of numerical simulations of phase changes is to precisely simul

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46

KANFOUDI, HATEM, and RIDHA ZGOLLI. "A NUMERICAL MODEL TO SIMULATE THE CAVITATING FLOWS." International Journal of Modeling, Simulation, and Scientific Computing 02, no. 03 (2011): 277–97. http://dx.doi.org/10.1142/s1793962311000505.

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The object of this paper is to propose a model to simulate steady and unsteady cavitating flows. In the engineering practice, cavitation flow is often modeled as a single-phase flow (mixture), where the cavitation area is handled as an area with the pressure lower than the vapor pressure. This approach always leads to the result, and the requirement of computer time is many times lower in comparison with multiphase flow models. The Reynolds-averaged Navier–Stokes equations are solved for the mixture of liquid and vapor, which is considered as a single-phase with variable density. The vaporizat

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47

Milanovic, Sasa, Milos Jovanovic, Zivan Spasic, and Boban Nikolic. "Two-phase flow in channels with non-circular cross-section of pneumatic transport of powder material." Thermal Science 22, Suppl. 5 (2018): 1407–24. http://dx.doi.org/10.2298/tsci18s5407m.

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The paper presents a numerical simulation of two-phase turbulent flow in straight horizontal channels of pneumatic transport with non-circular cross-section. For the granular flow simulation, we have chosen the flow of solid particles of quartz, flour, and ash in the flow of air, which is transporting fluid. During the modeling of the flow, the transported solid particles are reduced to spherical shapes. A correction of the stress model of turbulence is performed by taking into account the influences of the induction of secondary flows of the second order in the gas phase. The full Reynolds st

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48

Fu, Ben-Ran. "LIQUID–LIQUID MIXTURES FLOW IN MICROCHANNELS." Transactions of the Canadian Society for Mechanical Engineering 37, no. 3 (2013): 631–40. http://dx.doi.org/10.1139/tcsme-2013-0051.

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This study constitutes an experimental and numerical investigation into the single-phase flow of liquid–liquid mixtures and of water in uniform, converging and diverging microchannels. The experimental results for the pressure drop in three microchannels show good agreement with both theoretical predictions and CFD simulation results. The numerical velocity profiles in microchannels are also presented and show excellent agreement with the analytical velocity profiles. In addition, the pressure distribution prediction for the converging and diverging microchannels is also consistent with that o

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49

Lackner, G., F. J. S. Alhanati, S. A. Shirazi, D. R. Doty, and Z. Schmidt. "Numerical Simulation of the Gas-Liquid Flow in a Rotary Gas Separator." Journal of Energy Resources Technology 120, no. 1 (1998): 41–48. http://dx.doi.org/10.1115/1.2795008.

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The presence of free gas at the pump intake adversely affects the performance of an electrical submersible pump (ESP) system, often resulting in low efficiency and causing operational problems. One method of reducing the amount of free gas that the pump has to process is to install a rotary gas separator. The gas-liquid flow associated with the down hole installation of a rotary separator has been investigated to address its overall phase segregation performance. A mathematical model was developed to investigate factors contributing to gas-liquid separation and to determine the efficiency of t

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50

Tawfeeq, Yahya Jirjees. "Mathematical modeling and numerical simulation of porous media single-phase fluid flow problem: a scientific review." International research journal of engineering, IT & scientific research 6, no. 4 (2020): 15–28. http://dx.doi.org/10.21744/irjeis.v6n4.955.

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The complexity of porous media makes the classical methods used to study hydrocarbon reservoirs inaccurate and insufficient to predict the performance and behavior of the reservoir. Recently, fluid flow simulation and modeling used to decrease the risks in the decision of the evaluation of the reservoir and achieve the best possible economic feasibility. This study deals with a brief review of the fundamental equations required to simulate fluid flow through porous media. In this study, we review the derivative of partial differential equations governing the fluid flow through pores media. The

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