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Journal articles on the topic 'VOF simulace'

Author: Grafiati

Published: 28 June 2021

Last updated: 29 July 2025

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1

Zhang, Hong Qing, Yi Long Lou, Wei Ping Xing, and Jun Jun Tan. "Numerical Simulation of Ventilation Characteristics in a Hydropower Station Spillway Tunnel with High Head and Large Discharge." Advanced Materials Research 926-930 (May 2014): 3527–30. http://dx.doi.org/10.4028/www.scientific.net/amr.926-930.3527.

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High wind speedandloudnoise usually occur in the hydropower station spillway tunnel, which will impact the producing environment of operators. In this paper, turbulent model and VOF modelwere combinedto simulate wind speed and the volume of ventilated airin ventilation holeandthreeaeratorsin the spillway tunnel on the right bank of a hydropower station in China. The results show thatVOF modelcan well simulate ventilated air induced by water drag, andthe volume of ventilated air in ventilation hole is the largest.Wind speed distribution on the longitudinal sectionof the inlet of ventilation hol

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Zhang, Hong Qing, Xian Tang Zhang, Yi Long Lou, and Wei Ping Xing. "Comparative Analysis of Wind Speed in Ventilation Hole Simulated by VOF and Euler Model." Applied Mechanics and Materials 624 (August 2014): 643–46. http://dx.doi.org/10.4028/www.scientific.net/amm.624.643.

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In order to analysis the applicability of VOF and Euler models to simulate water-air two-phase flow, VOF model and Euler model, respectively combining turbulent model, were used to simulate wind speed in ventilation hole of working gate in a hydropower station spillway tunnel with high head and large discharge in China. The results show that the dragging force simulated by Euler model is much more effective than that simulated by VOF model, causing significant increase of airflow in ventilation hole. It is obviously that wind speed simulated by Euler model is more close to the measured one, wh

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3

Shang, Zhi, Jing Lou, and Hongying Li. "Simulations of Flow Transitions in a Vertical Pipe Using Coupled Level Set and VOF Method." International Journal of Computational Methods 14, no. 02 (2017): 1750013. http://dx.doi.org/10.1142/s021987621750013x.

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The level set (LS) and volume-of-fluid (VOF) methods are usually employed to simulate the two-phase flow. However every single method of them will face the mass conservative or accurate issues during the simulation. The coupled level set and volume-of-fluid (CLSVOF) method was not only able to conquer the shortages of the LS and VOF methods but also simultaneously keep the merits of both of the methods. In CLSVOF method the geometry reconstruction technology was employed to realize the coupling between LS and VOF. After the validation of single bubble rising cases, the CLSVOF method was used t

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Samuel, Samuel, Andi Trimulyono, and Ari Wibawa Budi Santosa. "Simulasi CFD pada Kapal Planing Hull." Kapal: Jurnal Ilmu Pengetahuan dan Teknologi Kelautan 16, no. 3 (2019): 123–28. http://dx.doi.org/10.14710/kapal.v16i3.26397.

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Akurasi dalam memprediksi hambatan kapal adalah salah satu aspek penting dalam mendesain lambung kapal. Secara umum, hambatan kapal dengan type planing lebih rumit daripada type displacement. Planing hull memiliki karakteristik unik seperti trim, heave, hard-chine, Froude number tinggi dan dead-rise angle. Gaya hidrodinamik pada planing hull lebih dominan daripada gaya hidrostatik. Analisis numerik menggunakan Finite Volume Method (FVM) dipilih untuk menyelesaikan masalah hidrodinamik. Dalam penelitian ini, persamaan (RANS Reynolds-Averaged Navier-Stokes) digunakan untuk menggambarkan model tu

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Cui, Liying, Yingge Yang, and Cuiping Ren. "Application of CVOFLS method in multi vortex shear flow field." Journal of Physics: Conference Series 2441, no. 1 (2023): 012034. http://dx.doi.org/10.1088/1742-6596/2441/1/012034.

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Abstract Coupled Volume of Fluid and Level Set method inherits the advantages of VOF and Level Set methods, takes VOF function as the main body to simulate the fluid motion interface, and corrects the normal direction of the interface through Level Set function, so as to effectively overcome the shortcomings of the two methods. The numerical simulation example of multi vortex shear flow field shows that this method can ensure better simulation accuracy of moving interface and higher calculation efficiency.

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Yahyaee, Ali, Amir Sajjad Bahman, Klaus Olesen, and Henrik Sørensen. "Level-Set Interface Description Approach for Thermal Phase Change of Nanofluids." Nanomaterials 12, no. 13 (2022): 2228. http://dx.doi.org/10.3390/nano12132228.

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Simulations of thermally driven phase change phenomena of nanofluids are still in their infancy. Locating the gas–liquid interface location as precisely as possible is one of the primary problems in simulating such flows. The VOF method is the most applied interface description method in commercial and open-source CFD software to simulate nanofluids’ thermal phase change. Using the VOF method directs to inaccurate curvature calculation, which drives artificial flows (numerical non-physical velocities), especially in the vicinity of the gas–liquid interface. To recover accuracy in simulation re

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Dong, Xu, Ya Xing Wang, Ye Li, and Li Zeng. "Numerical Simulation of Underwater Ellipsoid Motion near Free Surface." Applied Mechanics and Materials 275-277 (January 2013): 502–7. http://dx.doi.org/10.4028/www.scientific.net/amm.275-277.502.

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To analyze hydrodynamic characteristics of small scale body motion near free surface, finite volume method was adopt to compute incompressible Reynolds Averaged N-S (RANS) equations, numerical methods were conducted to simulate changes of drag coefficient and surface shape when moving near free surface. VOF method with Geo-Reconstruct form was used to deal with free surface. Fully developed turbulent flow can be solved by RNG k-ε model, and near wall region by near-wall functions. Quick upwind schemes were used to overcome instability problem when simulating high Reynolds flow. The results sho

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Jouvet, Guillaume, Marco Picasso, Jacques Rappaz, and Heinz Blatter. "A new algorithm to simulate the dynamics of a glacier: theory and applications." Journal of Glaciology 54, no. 188 (2008): 801–11. http://dx.doi.org/10.3189/002214308787780049.

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AbstractWe propose a novel Eulerian algorithm to compute the changes of a glacier geometry for given mass balances. The surface of a glacier is obtained by solving a transport equation for the volume of fluid (VOF). The surface mass balance is taken into account by adding an interfacial term in the transport equation. An unstructured mesh with standard stabilized finite elements is used to solve the non-linear Stokes problem. The VOF function is computed on a structured grid with a high resolution. The algorithm is stable for Courant numbers larger than unity and conserves mass to a high accur

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Zhang, Hong Qing, Yi Long Lou, Qian Zhao, and Wei Kai Tan. "Analysis the Response of Aerated Flow Depth to the VOF Model." Applied Mechanics and Materials 716-717 (December 2014): 767–70. http://dx.doi.org/10.4028/www.scientific.net/amm.716-717.767.

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In order to analysis the response of aerated flow depth to the VOF model, in this paper, we used VOF combining turbulent model to simulate aerated flow depth in a hydropower station spillway tunnel with high head and large discharge in China. The results show that aerated flow depth is slightly larger than the experiment water depth, but the maximum deviation are not greater than 5% (except the pile number 0+605.236 m). So, using empirical formula to converse the calculate value of water depth into aerated flow depth can make up for the defects of the VOF model which cannot directly get aerate

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Lubin, Pierre, and Stéphane Glockner. "NUMERICAL SIMULATIONS OF BREAKING SOLITARY WAVES." Coastal Engineering Proceedings 1, no. 33 (2012): 59. http://dx.doi.org/10.9753/icce.v33.waves.59.

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This paper presents the application of a parallel numerical code to breaking solitary waves impacting a seawall structure. The three-dimensional Navier-Stokes equations are solved in air and water, coupled with a subgrid-scale model to take turbulence into account. We compared three numerical methods for the free-surface description, using the classical VOF-PLIC and VOF-TVD methods, and an original VOF-SM method recently developed in our numerical tool (Vincent et al., 2010). Some experimental data for solitary waves impinging and overtopping coastal structures are available in literature (Hsi

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11

Yang, Jie, Yu Xin Ren, and Shou Mei Xiong. "Numerical Simulation of Die-Casting Mold Filling Process by Using Fractional Step Method." Materials Science Forum 575-578 (April 2008): 104–8. http://dx.doi.org/10.4028/www.scientific.net/msf.575-578.104.

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In the numerical simulation of mold filling process, the calculation efficiency has been a key point for practical applications due to the complexity and thin-section of die castings. In current research work, a fractional step method was applied in the solution of the unsteady Navier-Stokes equations, which can be implemented with a single solution to the momentum/pressure equations at each time step. This method may avoid the decrease in efficiency induced by iteration. A water analog system was designed and developed to simulate the die casting process. The flow patterns were recorded by a

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Yang, Zhi Yong, Jian Dong Li, and Guo Hua Zhang. "Numerical Simulation of Bubble Coalescence Based on VOF Method." Applied Mechanics and Materials 148-149 (December 2011): 814–17. http://dx.doi.org/10.4028/www.scientific.net/amm.148-149.814.

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This paper takes bubbles of bubble shell as research object, mainly studies two bubbles arranged in a vertical position. Applying VOF (volume of fluid) method to simulate interaction between two bubbles, analyses the effect of center distances and diameters on deformation and coalescence of bubbles. Results show that coalescence time of two bubbles with same diameters increases as the center distance increases. To two bubbles with different diameters, when the bigger bubble located beneath at the initial time, the smaller bubble moves upward first and then moves downward before two bubbles coa

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Yu, Yue, Zhi Wen, Xun Liang Liu, Fu Yong Su, Hai Peng Lan, and Xiao Hong Hao. "Hydraulic Model Experiment and Numerical Simulation of Bottom-Blowing Copper Smelting Furnace." Applied Mechanics and Materials 602-605 (August 2014): 546–53. http://dx.doi.org/10.4028/www.scientific.net/amm.602-605.546.

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A hydraulic model is used to study the flowing process within a bottom-blowing furnace designed by a company, and the VOF model is adopted to simulate its process. The VOF method can describe the formation, growing up and separation actions in theorizing process by comparing the simulation and experimental results, and this is a foundation of using a model to research the thermal process of the bottom-blowing furnace. It is indicated that a nozzle with disperse spouts can stir a larger zone, by comparing the influence on flowing process of four nozzles with different structures. The disperse s

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Han, Shuang, Runhua Yang, Chaobo Li, and Lixin Yang. "The Wettability and Numerical Model of Different Silicon Microstructural Surfaces." Applied Sciences 9, no. 3 (2019): 566. http://dx.doi.org/10.3390/app9030566.

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Wettability is an important property of solid surfaces and is widely used in many industries. In this work, seven silicon microstructure surfaces were made by plasma immersion ion implantation (PIII) technology. The experimental contact angles and theoretical contact angles of various surfaces were compared, which indicated that the classical theory had great limitations in predicting the static contact angles of complex structures. A parameterized microstructure surface was established by computational fluid dynamics (CFD) with a volume-of-fluid (VOF) model to analyze the reasons for the diff

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Klöpper, René, Rudolf Stark, Anne Schienle, and Dieter Vaitl. "Perceptibility of Simulated VLF-Sferics." Perceptual and Motor Skills 92, no. 3_suppl (2001): 1109–21. http://dx.doi.org/10.2466/pms.2001.92.3c.1109.

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KLOPPER, RENE. "PERCEPTIBILITY OF SIMULATED VLF-SFERICS." Perceptual and Motor Skills 92, no. 3 (2001): 1109. http://dx.doi.org/10.2466/pms.92.3.1109-1121.

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Shebelev, A., D. Zaitsev, and O. Kabov. "NUMERICAL STUDY OF THE BOILING PROCESS IN THREE-DIMENSIONAL MICROPORES." Eurasian Journal of Mathematical and Computer Applications 13, no. 1 (2025): 118–30. https://doi.org/10.32523/2306-6172-2025-13-1-118-130.

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In this work, a model for direct numerical simulation of the boiling process on three-dimensional porous surfaces is proposed and tested. To solve this problem, the VOF method was applied using the CSF method to simulate surface tension. Images of formation of vapor bubbles and value of the heat transfer coefficient were obtained depending on substrate temperature, pore material, backfill geometry, and contact angle.

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Silva, Aquisson T. G. da, Célio Fernandes, Juniormar Organista, Leandro Souza, and Antonio Castelo. "Validation of HiG-Flow Software for Simulating Two-Phase Flows with a 3D Geometric Volume of Fluid Algorithm." Mathematics 11, no. 18 (2023): 3900. http://dx.doi.org/10.3390/math11183900.

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This study reports the development of a numerical method to simulate two-phase flows of Newtonian fluids that are incompressible, immiscible, and isothermal. The interface in the simulation is located and reconstructed using the geometric volume of fluid (VOF) method. The implementation of the piecewise-linear interface calculation (PLIC) scheme of the VOF method is performed to solve the three-dimensional (3D) interface transport during the dynamics of two-phase flows. In this method, the interface is approximated by a line segment in each interfacial cell. The balance of forces at the interf

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Chen, Yujia, Maoxuan Cai, Shixun Zhang, Na Zhang, and Wei Cao. "Vacuum Filling Simulation with Combined Lagranian and VOF Method." Journal of Mechanical Materials and Mechanics Research 5, no. 1 (2022): 1. http://dx.doi.org/10.30564/jmmmr.v5i1.4511.

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Jetting succeeded by accumulation is the characteristic of the vacuum filling, which is different from the conventional pressure-driven flow. In order to simulate this kind of flow, a three-dimensional theoretical model in terms of incompressible and viscous flow is established, and an iterative method combined with finite element method (FEM) is proposed to solve the flow problem. The Lagranian-VOF method is constructed to trace the jetting and accumulated flow fronts. Based on the proposed model and algorithm, a simulation program is developed to predict the velocity, pressure, temperature,

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20

Akhlaghi, Mohammad, Vahid Mohammadi, Nowrouz Mohammad Nouri, Morteza Taherkhani, and Mehdi Karimi. "Multi-Fluid VoF model assessment to simulate the horizontal air–water intermittent flow." Chemical Engineering Research and Design 152 (December 2019): 48–59. http://dx.doi.org/10.1016/j.cherd.2019.09.031.

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Hu, Li-fen, Hao Wu, Qingtao Gong, Xiangyang Wang, and Wenbin Lv. "Time-Domain Flooding Simulation of a Damaged Warship." Marine Technology Society Journal 54, no. 2 (2020): 69–78. http://dx.doi.org/10.4031/mtsj.54.2.7.

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AbstractUnderstanding of the complex dynamic behavior of damaged ships and floodwater remains limited for ship designers and safety authorities. In this work, a Navier-Stokes (NS) solver that combines the volume of fluid (VOF) method with overset mesh techniques is developed to simulate the flooding process of a damaged ship. The VOF method captures the fluid interface, and the turbulence effect on flows is considered with the k-ω model. The overset mesh techniques are employed to handle the mesh update following transient ship motions. Then, the results of a damaged barge with dynamic and ove

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Wang, Ren Ping, Yong Ping Lei, and Yao Wu Shi. "Numerical Simulation of the Formation Process of the Keyhole in Laser Deep Penetration Welding." Advanced Materials Research 113-116 (June 2010): 1779–81. http://dx.doi.org/10.4028/www.scientific.net/amr.113-116.1779.

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In order to simulate accurately the formation process of the keyhole in laser deep penetration welding. Multiple reflection and Fresnel absorption are implemented simultaneously with the ray tracing technique in the keyhole. With all the governing equations including continuity, momentum and energy equation, the VOF method is adopted to trace the free surface of the molten pool. Simulation results are compared with the experimental ones to verify its validity.

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23

Lo, Der-Chang, and Yuan-Shiang Tsai. "A 3D Fully Non-Hydrostatic Model for Free-Surface Flows with Complex Immersed Boundaries." Water 14, no. 23 (2022): 3803. http://dx.doi.org/10.3390/w14233803.

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A fully non-hydrostatic hydrodynamic model is developed to simulate a three-dimensional, incompressible, and viscous free-surface flow passing downstream rigid rectangular and circular cylinders. A direct numerical simulation (DNS) based on the volume of fluid (VOF) and immersed boundary (IB) method is presented for solving the Navier–Stokes equations. The numerical scheme provides accurate solutions with high efficiency using the novel computational procedure to model severe surface deformations. A staggered finite difference method with a Cartesian mesh coordinate system is used to discretiz

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Zhang, Tao, Wei Zhou, Ning Zhao, Huasheng Cui, and Zepeng Gao. "Heating Simulation Analysis of Lubrication System at Low Temperature." Journal of Physics: Conference Series 2541, no. 1 (2023): 012017. http://dx.doi.org/10.1088/1742-6596/2541/1/012017.

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Abstract In this paper, star-ccm+ software is applied to simulate the thermal melting of engine oil under low-temperature conditions, and corresponding models are established based on the physical parameters of the fuel tank, antifreeze, lubricating oil, and heating pipe. Single-phase multi-working medium simulation and VOF (volume of fluid) multi-flow simulation were used to model and analyze the various characteristics of the lubricating oil from solidified state to liquid state under the specific box and heating pipe structure. The results showed that the simulation results of the VOF multi

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Tang, Fei, Yong Li, and Yong Bin Geng. "Liquid Sloshing Damping Computation in Cylindrical Tank Based on VOF Method." Applied Mechanics and Materials 390 (August 2013): 116–20. http://dx.doi.org/10.4028/www.scientific.net/amm.390.116.

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For liquid sloshing in partially filled cylindrical tank, the influence of the free surface on the sloshing damping is very important, especially in the application of spacecraft. In order to calculate the damping characteristic of partially filled cylindrical tanks more accurately, the finite volume scheme base on Volume-of-Fluid (VOF) is used to simulate the interface flow in the tank. Second order accurate piecewise line interface construction scheme is used to reconstruct the free surface. Through the numerical simulation, the influence on the sloshing damping with different liquid fill ra

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Muhamad Fauzi Othman, Muhammad Fairuz Remeli Remeli, Nur Adilah Azizi, and Baljit Singh. "Simulation of Thermosyphon Rankine Engine." Journal of Advanced Research in Applied Sciences and Engineering Technology 28, no. 2 (2022): 102–23. http://dx.doi.org/10.37934/araset.28.2.102123.

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The increasing global energy demand has led to other alternative ways of harvesting energy from renewable resources. This energy cause less environmental pollution and deterioration of humans' health. Thermosyphon Rankine engine (TSR) is a concept used for direct electrical power generation from low-grade heat sources. In this project, an extended investigation on previous experimental done was conducted through a simulation approach using Computational Fluid Dynamic (CFD) analysis to simulate a two-phase flow, phase change occurred during evaporation and condensation processes inside the ther

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Zhang, Jun Xia, and Xiao Lin Xu. "Application of VOF Interfacial Tracking Model to Condensation Heat Transfer." Advanced Materials Research 619 (December 2012): 139–42. http://dx.doi.org/10.4028/www.scientific.net/amr.619.139.

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Condensation heat transfer used to the condenser as an important way of heat transfer is a phenomenon that involves flowing and heat and mass transfer of both gas and liquid phases. Thus, the development of its numerical prediction helps to the design of the condenser. At the present work, a VOF model was used to numerically simulate condensation heat transfer in a V-shape tube, obtaining volume fraction of vapor, location of liquid film and parameters of heat transfer. Results show that the VOF model may predict flow pattern of condensation and mass flux of condensation of vapor on the liquid

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Besbes, Sonia, Wassim Abbassi, Mahmoud El Hajem, Habib Ben Aissia, and Jean Yves Champagne. "VOF METHOD APPLIED TO SIMULATE THE HYDRODYNAMICS OF RISING BUBBLES IN BUBBLE COLUMN REACTOR." International Journal of Fluid Mechanics Research 46, no. 5 (2019): 375–82. http://dx.doi.org/10.1615/interjfluidmechres.2018025855.

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Obiso, D., K. Yasuda, A. D. Voigt, M. Schreiner, M. Massoudi Farid, and A. Richter. "CFD Modeling of the Melting Behavior of a Fayalitic Slag." JOM 74, no. 4 (2022): 1533–42. http://dx.doi.org/10.1007/s11837-022-05185-4.

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AbstractThe melting behavior of a fayalitic slag was investigated with computational fluid dynamics and validated with experimental data. A heating microscope was employed to perform a typical ash melting behavior (AMB) test, in order to gain information about the melting behavior of the slag. The numerical approach is based on using the volume of fluid (VOF) method, in order to track the interface between the slag and the gas phases, and on the enthalpy–porosity model, in order to simulate the slag as a phase change material (PCM). The combined VOF-PCM model was therefore applied to perform a

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Taamneh, Yazan. "Influence of Jordanian zeolite on the performance of a solar still: experiments and CFD simulation studies." Water Supply 16, no. 6 (2016): 1700–1709. http://dx.doi.org/10.2166/ws.2016.091.

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Computational fluid dynamics (CFD) simulations were performed for experiments carried out with two identical pyramid-shaped solar stills. One was filled with Jordanian zeolite-seawater and the second was filled with seawater only. This work is focused on CFD analysis validation with experimental data conducted using a model of phase change interaction (evaporation-condensation model) inside the solar still. A volume-of-fluid (VOF) model was used to simulate the inter phase change through evaporation-condensation between zeolite-water and water vapor inside the two solar stills. The effect of t

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Li-Fen, Hu, Qi Huibo, Li Yuemeng, Li Wubin, and Chen Shude. "The CFD Method-Based Research on Damaged Ship’s Flooding Process in Time-Domain." Polish Maritime Research 26, no. 1 (2019): 72–81. http://dx.doi.org/10.2478/pomr-2019-0009.

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Abstract The flooding process is one of the main concerns of damaged ship stability. This paper combines the volume of fluid (VOF) method incorporated in the Navier-Stokes (NS) solver with dynamic mesh techniques to simulate the flooding of a damaged ship. The VOF method is used to capture the fluid interface, while the dynamic mesh techniques are applied to update the mesh as a result of transient ship motions. The time-domain flooding processes of a damaged barge and a rectangular cabin model are carried out based on the abovementioned method, and the computational results appear compatible

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Feng, Xing, Wan Qing Wu, and Feng Li Zhang. "The Deflection Angle Impact on the Oil Containment by Boom Based on the Numerical Wave Flume." Advanced Materials Research 183-185 (January 2011): 495–99. http://dx.doi.org/10.4028/www.scientific.net/amr.183-185.495.

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The 2-D numerical wave flume, based on the Reynolds Averaged Navier-Stokes equations and the standard turbulence model, was developed to simulate the turbulent flows with the free surface, in which the volume of fluid (VOF) method was used to handle the large deformation of the free surface and the relaxation approach of combined wave generation and absorbing was implemented, utilizing the commercial CFD software-FLUENT. The relationship of the wave parameters, initial failure velocity and the deflection angle was investigated.

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Yu, Qun, Xiao Dong Hu, Long Huan Huang, and Yue Lin. "Optimum Design and Analysis of Metal Delivery System for Magnesium Alloy Plates with Twin-Roll Casting Process." Applied Mechanics and Materials 395-396 (September 2013): 1150–53. http://dx.doi.org/10.4028/www.scientific.net/amm.395-396.1150.

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Using physical and numerical simulation method，metal delivery system of twin-roll casting magnesium alloy process was researched. The Anycasting software was used to simulate different flow systems by VOF method. And based on similar principles, an acrylic experimental model with the ratio of 1:1 was designed. The dam’s size and position were optimized by simulations and experiments. The flow distribution is uniform along the horizontal of the casting roller. Numerical simulation and physical simulation are in good coincidence.

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Li, Chuan Qi, Jie Gong, and Xiang Fu Li. "Numerical Simulation of Flow over a Spillway with Turbulence Model." Applied Mechanics and Materials 90-93 (September 2011): 2511–15. http://dx.doi.org/10.4028/www.scientific.net/amm.90-93.2511.

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In this paper, the Standard k- ε equation turbulence model was used to simulate three-dimensional flow over a spillway. The volume of fluid method (VOF) was introduced into the iteration of calculation to solve the free water surface, and segregated solver was used with the PISO pressure-velocity coupling scheme. The free surface, the magnitude and distribution of the velocity, the pressure on the spillway surface and so on were obtained. The simulation results were in good agreement with the experiment data.

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Jiang, Qin, and Chang Kuan Zhang. "Simulation of Wave-Maritime Structure Interactions by Using a Numerical Wave Flume." Advanced Materials Research 588-589 (November 2012): 1376–79. http://dx.doi.org/10.4028/www.scientific.net/amr.588-589.1376.

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A numerical wave flume (CADMAS-SURF/2D) developed on the basis of NASA-VOF technique is used to simulate interactions between waves and maritime structures in order to verify its feasibility to maritime structure designs. Examinations and comparisons of the calculated results of wave impacts on typical maritime structures, such as caisson-type and composite breakwaters, with experimental data indicate that the numerical wave flume can be an effective computer aided design tool for the designs of coastal protection structures.

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ASHRIT, R. G., M. DAS GUPTA, and A. K. BOHRA. "MM5 simulation of the 1999 Orissa Super Cyclone : Impact of bogus vortex on track and intensity prediction." MAUSAM 57, no. 1 (2021): 129–34. http://dx.doi.org/10.54302/mausam.v57i1.461.

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Kabdylkakov, Y. A., and A. S. Suraev. "APPLICATION OF THE VOLUME OF FLUID METHOD TO SIMULATE THE PROCESS OF MELTING AND MOVEMENT OF FUEL." NNC RK Bulletin, no. 3 (January 7, 2022): 3–8. http://dx.doi.org/10.52676/1729-7885-2021-3-3-8.

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The article considers the possibility of using the method of multiphase fluid Volume of Fluid (VOF), the Ansys Fluent program, for numerical simulation of the melting process of the materials of the experimental device and their movement over the volume of the computational domain. For modeling the design of a typical experimental device tested in the reactor was selected, a two-dimensional computational model was developed, methods for solving the thermal problem were described, and the simulation results were presented.

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Chen, Jia Zhao, Xue Ren Wang, and Yu Xiang Zhang. "Numerical Analysis of Diffusion of Leaked UDMH on a Cliff." Advanced Materials Research 1092-1093 (March 2015): 730–33. http://dx.doi.org/10.4028/www.scientific.net/amr.1092-1093.730.

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Built-in VOF model and k-ε turbulence model in Fluent were used to simulate the evaporation and diffusion of the pool formed by leaked UDMH on a cliff. Different situations in three wind speeds were calculated, and the diffusion mode and concentration distribution law were analyzed. The results show that there is a large poisoned area formed on the cliff, and people under the cliff should escape to upwind immediately and the emergency personnel should access the accident spot along the back of the cliff.

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Mahardika, Mohammad Azis, Muhamad Pramuda Sirodz, and Ferry Hidayat. "Pengaruh Contact Angle Terhadap Pembentukan Droplet dengan Menggunakan Simulasi CFD." Jurnal Rekayasa Energi dan Mekanika 3, no. 2 (2024): 154. http://dx.doi.org/10.26760/jrem.v3i2.154.

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ABSTRAK Penelitian mengenai pembentukan droplet merupakan salah satu topik penting dan dalam 10 tahun terakhir mengalami perkembangan yang cukup pesat pada penelitian ini, dilakukan simulasi dengan menggunakan model volume of fluid (VOF) untuk menganalisis pengaruh sudut kontak terhadap pembentukan droplet. Geometri yang digunakan adalah tipe T-Junction dengan menggunakan fluida air dan oli. Melalui variasi kontak sudut maka diperoleh hasil dengan kondisi kecepatan air 0.001 m/s dan oli sebesar 0.0002 m/s, droplet terbentuk pada kondisi sudut kontak sebesar 135°, hal ini dikarenakan air memasu

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Desombre, Jonathan, Denis Morichon, and Mathieu Mory. "SIMULTANEOUS SURFACE AND SUBSURFACE AIR AND WATER FLOWS MODELLING IN THE SWASH ZONE." Coastal Engineering Proceedings 1, no. 33 (2012): 56. http://dx.doi.org/10.9753/icce.v33.currents.56.

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This study presents the results of the numerical simulation of a bore-driven swash flow over a permeable coarse- grained beach, carried out using the THETIS code. This code, based on a VOF-RANS approach, was previously used to simulate the swash flow over an impermeable beach (Desombre et al. 2013). For the present study, the code is extended to account for infiltration and exfiltration into a permeable immobile beach using the Volume-Averaged momentum equation that solves simultaneously the surface and subsurface flows. The results are compared with a laboratory data set from an experiment pe

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Hu, Wei Hua. "Numerical Simulation of the Viscous Flow around High-Speed Ship Hull Considering the Free Surface." Applied Mechanics and Materials 101-102 (September 2011): 966–69. http://dx.doi.org/10.4028/www.scientific.net/amm.101-102.966.

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Over the last decade, considering the influence of the viscous free water surface, the numerical simulation of the flow around the hull is one of the focuses in ship research. Currently, the precision of numerical simulation results need to be enhanced. In this paper, Computational Fluid Dynamics (CFD) method is used, for a real high-speed ship model, to simulate the flow around the hull and to calculate the total hull resistance with FLUENT software. The Volume of Fraction (VOF) method of two-phase fluid is used to deal with the free surface tracking. The results of resistance are compared wi

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LIU, JINTAO, SHUHONG LIU, YULIN WU, YUEKUN SUN, and ZHIGANG ZUO. "PREDICTION OF "S" CHARACTERISTICS OF A PUMP-TURBINE WITH SMALL OPENING BASED ON V2F MODEL." International Journal of Modern Physics: Conference Series 19 (January 2012): 417–23. http://dx.doi.org/10.1142/s2010194512009014.

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The characteristic of a pump-turbine during the whole starting or stopping period couldn't be calculated accurately by CFD method and most of turbulence models were found inaccurate in the calculation of small opening condition, so a proper turbulence model was needed for the further study of pump-turbine. V2F model which was valid to the solid wall and SST k-ω model were used to calculate the pump-turbine with two openings that one was a small opening and the other was large opening. Results showed that V2F model can be used to simulate characteristics of pump-turbine in the whole opening ran

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Zhang, Wei, You Hong Tang, Cheng Bi Zhao, and Cheng Zhang. "A Two-Phase Flow Model with VOF for Free Surface Flow Problems." Applied Mechanics and Materials 232 (November 2012): 279–83. http://dx.doi.org/10.4028/www.scientific.net/amm.232.279.

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A numerical model based on the two-phase flow model for incompressible viscous fluid with a complex free surface has been developed in this study. The two-step projection method is employed to solve the Navier–Stokes equations in the numerical solutions, and finite difference method on a staggered grid is used throughout the computation. The two-order accurate volume of fluid (VOF) method is used to track the distorted and broken free surfaces. The two-phase model is first validated by simulating the dam break over a dry bed, in which the numerical results and experimental data agree well. The

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Struyven, Florent, Zhenyi Guo, David F. Fletcher, et al. "Suitability of the VOF Approach to Model an Electrogenerated Bubble with Marangoni Micro-Convection Flow." Fluids 7, no. 8 (2022): 262. http://dx.doi.org/10.3390/fluids7080262.

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When a hydrogen or oxygen bubble is created on the surface of an electrode, a micro-convective vortex flow due to the Marangoni effect is generated at the bottom of the bubble in contact with the electrode. In order to study such a phenomenon numerically, it is necessary to be able to simulate the surface tension variations along with a liquid-gas interface, to integrate the mass transfer across the interface from the dissolved species present in the electrolyte to the gas phase, and to take into account the moving contact line. Eulerian methods seem to have the potential to solve this modelin

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Chen, Xiaohan, Bing Liu, and Guigao Le. "Numerical Simulation Research on the Anchor Last Deployment of Marine Submersible Buoy System Based on VOF Method." Journal of Marine Science and Engineering 10, no. 11 (2022): 1681. http://dx.doi.org/10.3390/jmse10111681.

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Marine submersible buoy systems are widely-used equipment for ocean resource development. The marine submersible buoy system studied in this paper consists of the submersible buoy, the battery compartment, the anchor block, the mooring line, and the power supply cable. To study the mechanical behavior and obtain the speed variation of each component during the anchor last deployment, this paper establishes the free surface computational fluid dynamics model of marine submersible buoy systems based on the VOF method. This model includes the incompressible Navier–Stokes equations, the Renormaliz

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Liu, Mei, Yongxin Zhu, and Song Ling Wang. "Numerical Simulation of the Effect of the Uneven Wall on the Liquid Film Flow." Applied Mechanics and Materials 477-478 (December 2013): 232–35. http://dx.doi.org/10.4028/www.scientific.net/amm.477-478.232.

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Two-dimensional models of inclined flat and corrugated walls are established based on VOF method to numerically simulate the flow characteristics of liquid film. The impact of wall structures on the wave profile of the film is studied. The results indicate that the wall structure plays an important role on the liquid film, there are vortexes generated on the trough of wavy wall, the vortex has the "rolling" effect in machinery, which reduces the viscous resistance. and continuous film is easier to form on the wall whose corrugated size is smaller.

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Song, Dong, Bao Wei Song, and Hai Bao Hu. "The Analysis of Noises of Flows across the Superhydrophobic Surfaces with Microscale Structures." Advanced Materials Research 535-537 (June 2012): 319–22. http://dx.doi.org/10.4028/www.scientific.net/amr.535-537.319.

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Analysis of Superhydrophobic surfaces is a hot topic recently because of its potential use on drag reduction, lower flow noise, self-cleaning. This paper used VOF model and Lighthill's Acoustic Analogy to simulate the sound pressure of channel flow, and found when fluid flowed across channels, the sound pressure caused by superhydrophobic surfaces was much lower than that of plane surfaces. The macroscale structures and the air stored in the cavities could lower the turbulence kinetic energy, and that could be one of the reasons why flow causes lower flow noise across the superhydrophobic chan

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Muhammad, Aadil, Rajashekhar Pendyala, and Nejat Rahmanian. "CFD Simulation of Droplet Formation under Various Parameters in Prilling Process." Applied Mechanics and Materials 625 (September 2014): 394–97. http://dx.doi.org/10.4028/www.scientific.net/amm.625.394.

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A computational fluid dynamics (CFD) model is used to investigate the droplet formation and deformation under the influence of different parameters. Droplet breakup phenomenon depends on several factors such as viscosity, velocity, pressure difference, and geometry. The most important parameter for droplet breakup is the Weber number (We) which is the ratio of disrupting aerodynamics forces to the surface tension forces. Volume of fluid (VOF) model is used in present work to simulate the droplet breakup. This work presents the effect of liquid velocity, viscosity, and orifice diameters on drop

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Liu, Y. L., B. Lv, and W. L. Wei. "Large Eddy Simulation of Gas-Liquid Two-Phase Flow for a Nested Type Fixed-Cone Valve." Applied Mechanics and Materials 170-173 (May 2012): 2458–63. http://dx.doi.org/10.4028/www.scientific.net/amm.170-173.2458.

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large eddy simulation cooperated with a physical fractional-step method is applied to simulate steady flow around a nested type fixed-cone valve; and the equations are solved with the finite volume method. The free fluid surface is simulated by the VOF method. The pressure contours and vorticity magnitude are obtained. The modeling results conform to physical law, and show that the large eddy simulation theory has powerful capacity in simulation of microstructures of turbulent flows, and the function of the nested type fixed-cone valve for energy dissipating is good.

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Cao, Wen Jiong, Shou Bin Dong, Xin Wei Lu, and Zhao Yao Zhou. "Numerical Simulation of Filling Process in HPDC by Lattice Boltzmann Method." Advanced Materials Research 717 (July 2013): 354–58. http://dx.doi.org/10.4028/www.scientific.net/amr.717.354.

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A general lattice Boltzmann Method (LBM) to simulate filling process of high pressure die casting (HPDC) is investigated. Boundary conditions are studied and the free surface model is established by combine the LBM with VOF method. The final model was substantiated by simulating filling process in HPDC in three dimensions. The simulated results from LBM and finite difference method (FDM) were compared with the experiments. The results show the former is in a better agreement with experiments. It demonstrates the efficiency and precision of this LBM model in describing flow pattern in filling p

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