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Journal articles on the topic 'Hydrodynamic mesh'

Author: Grafiati

Published: 28 May 2022

Last updated: 31 July 2025

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1

Lowe, Ryan J., Corrado Altomare, Mark Buckley, Renan da Silva, Jeff Hansen, and Dirk Rijnsdorp, Jose Dominguez, Alejandro Crespo. "NONHYDROSTATIC AND MESH-FREE COMPUTATIONAL FLUID DYNAMICS MODEL COMPARISONS OF SURF ZONE HYDRODYNAMICS BY PLUNGING IRREGULAR WAVES." Coastal Engineering Proceedings, no. 37 (September 1, 2023): 11. http://dx.doi.org/10.9753/icce.v37.currents.11.

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Wave breaking over steep bathymetry often generates plunging waves where the free surface overturns and violent water motion is triggered. Simulating these complex surf zone processes poses significant challenges for conventional mesh-based hydrodynamic models, due to the rapidly-deforming nature of the free surface and underlying turbulent flows. Yet accurate prediction of these hydrodynamics is essential to characterize the wide range of nearshore processes driven by wave breaking. In this study we rigorously compare the ability of two different classes of phase-resolving wave-flow models to

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Gibson, Brad K., Stéphanie Courty, Patricia Sánchez-Blázquez, et al. "Hydrodynamical Adaptive Mesh Refinement Simulations of Disk Galaxies." Proceedings of the International Astronomical Union 4, S254 (2008): 445–52. http://dx.doi.org/10.1017/s1743921308027956.

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AbstractTo date, fully cosmological hydrodynamic disk simulations to redshift zero have only been undertaken with particle-based codes, such as GADGET, Gasoline, or GCD+. In light of the (supposed) limitations of traditional implementations of smoothed particle hydrodynamics (SPH), or at the very least, their respective idiosyncrasies, it is important to explore complementary approaches to the SPH paradigm to galaxy formation. We present the first high-resolution cosmological disk simulations to redshift zero using an adaptive mesh refinement (AMR)-based hydrodynamical code, in this case, RAMS

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Prust, Logan J. "Moving and reactive boundary conditions in moving-mesh hydrodynamics." Monthly Notices of the Royal Astronomical Society 494, no. 4 (2020): 4616–26. http://dx.doi.org/10.1093/mnras/staa1031.

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ABSTRACT We outline the methodology of implementing moving boundary conditions into the moving-mesh code manga. The motion of our boundaries is reactive to hydrodynamic and gravitational forces. We discuss the hydrodynamics of a moving boundary as well as the modifications to our hydrodynamic and gravity solvers. Appropriate initial conditions to accurately produce a boundary of arbitrary shape are also discussed. Our code is applied to several test cases, including a Sod shock tube, a Sedov–Taylor blast wave, and a supersonic wind on a sphere. We show the convergence of conserved quantities i

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Panahi, Roozbeh, and Mehdi Shafieefar. "Application of Overlapping Mesh in Numerical Hydrodynamics." Polish Maritime Research 16, no. 2 (2009): 24–33. http://dx.doi.org/10.2478/v10012-008-0018-4.

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Application of Overlapping Mesh in Numerical Hydrodynamics A Finite Volume (FV) algorithm is presented to investigate two-dimensional hydrodynamic problems including viscous free surface flow interaction with free rigid bodies in the case of large and/or relative motions. Two-phase flow with complex deformations at the interface is simulated using a fractional stepvolume of fluid algorithm while it is also capable of representing a high quality wave tank, according to implemented temporal discretisation. Rigid body motions are also captured using two overset meshes. Flow variables are transfer

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Calderón, Diego, Ondřej Pejcha, and Paul C. Duffell. "Moving-mesh radiation-hydrodynamic simulations of wind-reprocessed transients." Monthly Notices of the Royal Astronomical Society 507, no. 1 (2021): 1092–105. http://dx.doi.org/10.1093/mnras/stab2219.

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ABSTRACT Motivated by recent theoretical work on tidal disruption events and other peculiar transients, we present moving-mesh radiation-hydrodynamic simulations of radiative luminosity emitted by a central source being reprocessed by a wind-like outflow. We couple the moving-mesh hydrodynamic code jet with our newly developed radiation module based on mixed-frame grey flux-limited diffusion with implicit timestep update. This allows us to study the self-consistent multidimensional radiation-hydrodynamic evolution over more than 10 orders of magnitude in both space and time in a single run. We

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Tao, Meiying. "Kinetic Equation Study on Momentum Conservation of Aerodynamics Incompressible Fluid of High-Altitude Aircraft." Journal of Physics: Conference Series 2599, no. 1 (2023): 012015. http://dx.doi.org/10.1088/1742-6596/2599/1/012015.

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Abstract This paper introduces an integrated aerodynamic design method for aircraft based on numerical solution of hydrodynamics and electromagnetics equations. By using Pro/Engineer, ANSA, Fluent and MATLAB, the geometric shape, unstructured fluid mesh, hydrodynamic parameters and unpowered flight trajectory data of an aircraft were processed and calculated. In this paper, N-S equations are studied, and a test scheme for a hydrodynamic material aerodynamic model is established. Then, relevant parameters of the aircraft are tested and studied. The feasibility of this method for unsteady aerody

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7

Hu, Zhicheng, and Heyu Wang. "A Moving Mesh Method for Kinetic/Hydrodynamic Coupling." Advances in Applied Mathematics and Mechanics 4, no. 06 (2012): 685–702. http://dx.doi.org/10.4208/aamm.12-12s01.

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AbstractThis paper deals with the application of a moving mesh method for kinetic/hydrodynamic coupling model in two dimensions. With some criteria, the domain is dynamically decomposed into three parts: kinetic regions where fluids are far from equilibrium, hydrodynamic regions where fluids are near thermody-namical equilibrium and buffer regions which are used as a smooth transition. The Boltzmann-BGK equation is solved in kinetic regions, while Euler equations in hydrodynamic regions and both equations in buffer regions. By a well defined monitor function, our moving mesh method smoothly co

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8

Chang, Philip, Shane W. Davis, and Yan-Fei Jiang(姜燕飞). "Time-dependent radiation hydrodynamics on a moving mesh." Monthly Notices of the Royal Astronomical Society 493, no. 4 (2020): 5397–407. http://dx.doi.org/10.1093/mnras/staa573.

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ABSTRACT We describe the structure and implementation of a radiation hydrodynamic solver for manga, the moving-mesh hydrodynamics module of the large-scale parallel code, Charm N-body GrAvity solver (changa). We solve the equations of time-dependent radiative transfer (RT) using a reduced speed of light approximation following the algorithm of Jiang et al. By writing the RT equations as a generalized conservation equation, we solve the transport part of these equations on an unstructured Voronoi mesh. We then solve the source part of the RT equations following Jiang et al. using an implicit so

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9

Chang, Philip, James Wadsley, and Thomas R. Quinn. "A moving-mesh hydrodynamic solver for ChaNGa." Monthly Notices of the Royal Astronomical Society 471, no. 3 (2017): 3577–89. http://dx.doi.org/10.1093/mnras/stx1809.

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10

DEGTYAREV, L. M., and V. V. DROZDOV. "Adaptive Mesh Computation of Magnetic Hydrodynamic Equilibrium." International Journal of Modern Physics C 02, no. 01 (1991): 30–38. http://dx.doi.org/10.1142/s0129183191000056.

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In stationary problems of mathematical physics an error of the finite-difference method ||z||=||u−uh|| is determined by the number of grid nodes N so that as N→∞, asymptotically [Formula: see text] The accuracy order m depends on the approximation of an original differential problem by a difference problem, while the constant C depends on the solution derivatives and the grid step h distribution. The value of ||z|| may be decreased by redistributing the grid points. An optimal computational grid is determined by both the region in which the original differential problem is solved and by the so

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11

Hoch, Jannis M., Arjen V. Haag, Arthur van Dam, Hessel C. Winsemius, Ludovicus P. H. van Beek, and Marc F. P. Bierkens. "Assessing the impact of hydrodynamics on large-scale flood wave propagation – a case study for the Amazon Basin." Hydrology and Earth System Sciences 21, no. 1 (2017): 117–32. http://dx.doi.org/10.5194/hess-21-117-2017.

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Abstract. Large-scale flood events often show spatial correlation in neighbouring basins, and thus can affect adjacent basins simultaneously, as well as result in superposition of different flood peaks. Such flood events therefore need to be addressed with large-scale modelling approaches to capture these processes. Many approaches currently in place are based on either a hydrologic or a hydrodynamic model. However, the resulting lack of interaction between hydrology and hydrodynamics, for instance, by implementing groundwater infiltration on inundated floodplains, can hamper modelled inundati

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Wu, Fang Liang, Ya Ling Peng, Zhi Guo Zhang, and Guo Dong Wang. "Application of Dynamic Mesh in Analysis of Propeller Hydrodynamic Characteristics." Applied Mechanics and Materials 212-213 (October 2012): 1112–18. http://dx.doi.org/10.4028/www.scientific.net/amm.212-213.1112.

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This paper presents a numerical procedure to investigate the hydrodynamic performance and flow field of propeller with the aid of dynamic mesh. The purpose of the study is to validate a hybrid mesh generation strategy and dynamic mesh technology. Computations were performed at various advance ratios following experimental conditions. Results for both global and local flow quantities are discussed and compared with experimental data. The predicted thrust and torque are in good agreement with the experimental values. The overall results suggest that the present approach is practicable for actual

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13

Pen, Ue‐Li. "A High‐Resolution Adaptive Moving Mesh Hydrodynamic Algorithm." Astrophysical Journal Supplement Series 115, no. 1 (1998): 19–34. http://dx.doi.org/10.1086/313074.

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Yang, Xiyan, Wenjie An, Wenda Li, and Shanghong Zhang. "Implementation of a Local Time Stepping Algorithm and Its Acceleration Effect on Two-Dimensional Hydrodynamic Models." Water 12, no. 4 (2020): 1148. http://dx.doi.org/10.3390/w12041148.

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The engineering applications of two-dimensional (2D) hydrodynamic models are restricted by the enormous number of meshes needed and the overheads of simulation time. The aim of this study is to improve computational efficiency and optimize the balance between the quantity of grids used in and the simulation accuracy of 2D hydrodynamic models. Local mesh refinement and a local time stepping (LTS) strategy were used to address this aim. The implementation of the LTS algorithm on a 2D shallow-water dynamic model was investigated using the finite volume method on unstructured meshes. The model per

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15

Tang, Chao, Ryan Lowe, Jeff Hansen, Renan Silva, and Corrado Altomare. "MODELLING WAVE HYDRODYNAMICS AROUND POROUS ARTIFICIAL REEF WITH COUPLED MESH-BASED AND MESHLESS NUMERICAL METHODS." Coastal Engineering Proceedings, no. 38 (May 29, 2025): 107. https://doi.org/10.9753/icce.v38.structures.107.

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Nature-based coastal protection solutions, such as artificial reefs, often consist of porous modules with complex geometries. While the porous designs are due to the requirements of promoting benthic habitat and attenuating incident waves, it is unclear how porosity and novel shapes affect the hydrodynamics near the modules. Meshless computational fluid dynamics (CFD) models are ideal for simulating the detailed hydrodynamic interactions between the waves and novel-shaped porous coastal structures. However, such CFD methods are computationally demanding, constraining the model domains to the i

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Li, Qiang, Shuo Zhang, Yujun Wang, Weiwei Xu, Zengli Wang, and Zhenbo Wang. "Dynamic characteristics of water-lubricated journal bearings." Mechanics & Industry 20, no. 4 (2019): 404. http://dx.doi.org/10.1051/meca/2019037.

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The increasing ecological awareness and stringent requirements for environmental protection have led to the development of water lubricated journal bearings. For the investigation of water-lubricated journal bearings, a new structured mesh movement algorithm for the CFD model is developed and based on this method, the nonlinear transient hydrodynamic force model is established. Then, with consideration of velocity perturbation, a method to determine dynamic coefficients and linear hydrodynamic forces is promoted. After validation of static equilibrium position and stiffness coefficients, a com

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Lu, Suli, Jialun Liu, and Robert Hekkenberg. "Mesh Properties for RANS Simulations of Airfoil-Shaped Profiles: A Case Study of Rudder Hydrodynamics." Journal of Marine Science and Engineering 9, no. 10 (2021): 1062. http://dx.doi.org/10.3390/jmse9101062.

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A good mesh is a prerequisite for achieving reliable results from Computational Fluid Dynamics (CFD) calculations. Mesh properties include mesh types, computational domain sizes, and node distributions. However, in literature, we found no clear consensus about what these properties should be. In this article, we performed a case study on ship rudders to determine what the suitable mesh properties are for airfoil-shaped profiles. A classic NACA 0012 profile is chosen as an example, and commercial packages ANSYS ICEM are applied for meshing with an ANSYS Fluent solver. With a strategy in conside

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18

Kang, Younghun, and Ethan J. Kubatko. "An automatic mesh generator for coupled 1D–2D hydrodynamic models." Geoscientific Model Development 17, no. 4 (2024): 1603–25. http://dx.doi.org/10.5194/gmd-17-1603-2024.

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Abstract. Two-dimensional (2D), depth-averaged shallow water equation (SWE) models are routinely used to simulate flooding in coastal areas – areas that often include vast networks of channels and flood-control topographic features and/or structures, such as barrier islands and levees. Adequately resolving these features within the confines of a 2D model can be computationally expensive, which has led to coupling 2D simulation tools to less expensive one-dimensional (1D) models. Under certain 1D–2D coupling approaches, this introduces internal constraints that must be considered in the generat

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Filimonova, A. A., A. A. Chichirov, A. V. Pechenkin, and N. D. Chichirova. "Optimization of the Hydrodynamic Regime in the Flow Electrodializator Cell." Мембраны и мембранные технологии 13, no. 1 (2023): 15–22. http://dx.doi.org/10.31857/s2218117223010030.

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Electrodialysis is a water treatment and wastewater treatment technology that uses an electric field gradient and ion exchange membranes to separate ions in aqueous solutions. Studies conducted using this technology have shown the influence of the hydrodynamic regime on the efficiency of the process, the rate of mass transfer and polarization concentration. The article presents experimental results, mathematical calculations and numerical modeling in the universal software system of analysis by the Ansys finite element method. Theoretical calculated results show a good correlation with the res

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Wu, Jiaming, Yizhe Dou, Haiyan Lv, et al. "Thrust Characteristics of Ducted Propeller and Hydrodynamics of an Underwater Vehicle in Control Motions." Journal of Marine Science and Engineering 9, no. 9 (2021): 940. http://dx.doi.org/10.3390/jmse9090940.

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A numerical technique to simulate the hydrodynamic behavior of ducted propellers attached to an underwater vehicle traveling under the mutually interacting flow fields of the vehicle and the propellers is proposed; the hydrodynamic performance of the propellers and the hydrodynamic loading on the main body of the vehicle when it is in different kinds of motion is investigated numerically. In the research, 3D geometric models of the duct, propeller, and main body of the vehicle are first constructed according to their geometrical features. A computational fluid dynamics (CFD) technique based on

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21

Ramirez, J., R. Ramis, and J. Meyer-Ter-Vehn. "Integrated numerical simulation of indirect laser-driven implosion for ICF." Laser and Particle Beams 16, no. 1 (1998): 91–99. http://dx.doi.org/10.1017/s0263034600011800.

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A NIF-type hohlraum target (Lindl 1995; CEA 1995) is analyzed in an integrated calculation that uses last revision (4.2) of MULTI2D code (Ramis et al. 1992). The numerical simulation includes: Lagrangian mesh, tracking of laser beams, inverse bremsstrahlung absorption, 3D radiation transport, radiation-induced hydrodynamics of casing and window panes, and radiatively driven capsule implosion. Electron heat conduction (Spitzer with flux limiter), tabulated Equations of State (Sesame), and LTE opacities are also included. Detailed results on hydrodynamic evolution of the system, compression symm

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22

Zhang, Xinlong, Zhuang Lin, Simone Mancini, et al. "Numerical Investigation into the Effect of Damage Openings on Ship Hydrodynamics by the Overset Mesh Technique." Journal of Marine Science and Engineering 8, no. 1 (2019): 11. http://dx.doi.org/10.3390/jmse8010011.

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Damage stability is difficult to assess due to the complex hydrodynamic phenomena regarding interactions between fluid and structures. Therefore, a detailed analysis of the flooding progression and motion responses is important for improving ship safety. In this paper, numerical simulations are performed on the damaged DTMB 5415 ship at zero speed. All calculation are carried out using CD Adapco Star CCM + software, investigating the effect of damage openings on ship hydrodynamics, including the side damage and the bottom damage. The computational domain is modelled by the overset mesh and sol

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Nedostup, A. A., A. O. Razhev, P. V. Nasenkov, K. V. Konovalova, E. I. Sergeyev, and A. A. Voloshin. "Hydrodynamics of node nettings." Fisheries 1, no. 5 (2025): 115–20. https://doi.org/10.36038/0131-6184-2024-5-115-120.

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To build fishing gear, nodal sections with different orientations of the del are used: T0 (standard mesh arrangement); T90 and T45 (T0 rotated by 90° and 45° respectively). The paper discusses the use of this method to determine the hydrodynamic properties of objects with different mesh rotations. A schematization of the canvas was carried out to develop a mathematical model based on the Navier-Stokes equations. The calculation was performed on a regular computational grid using an implicit finite-difference scheme using the methods of coordinate splitting, linearization of nonlinear equations

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Wang, Ming, Huili Dong, and Fangxiu Zhang. "Research on 3D Hydrodynamic Model Based on Adaptive Mesh." IOP Conference Series: Earth and Environmental Science 719, no. 4 (2021): 042077. http://dx.doi.org/10.1088/1755-1315/719/4/042077.

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Plewa, T., and E. Müller. "AMRA: An Adaptive Mesh Refinement hydrodynamic code for astrophysics." Computer Physics Communications 138, no. 2 (2001): 101–27. http://dx.doi.org/10.1016/s0010-4655(01)00199-0.

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Xie, Qing Jie, Hang Su, Feng He, Zhi Gang Chen, and Shu Wei Li. "Study on the Hydrodynamic Model for Jinshan Lake Based on the Dam Operation." Advanced Materials Research 838-841 (November 2013): 1703–8. http://dx.doi.org/10.4028/www.scientific.net/amr.838-841.1703.

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With the application of RMA2 two-dimensional (2-D) hydrodynamic model of Surface-water Modeling System (SMS), hydrodynamic characteristics of Jinshan Lake in the process of water injection and water exchange were simulated. The model generalized the river channel, divided mesh, chose the parameters, and controlled the boundary conditions with both the flowrate and the water surface elevation. The hydrodynamic simulation results show that: The simulated and measured value of the water level and flow velocity in the calibration section are in good agreement. On the whole, the simulation can trul

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LIU, Xiyan, Xulong YUAN, Kai LUO, and Zhaoxing DU. "Numerical simulation study on hydrodynamic time-delay characteristics of supercavitating vehicle." Xibei Gongye Daxue Xuebao/Journal of Northwestern Polytechnical University 41, no. 5 (2023): 905–14. http://dx.doi.org/10.1051/jnwpu/20234150905.

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Due to the existence of the time-delay effect of the supercavity, the fluid dynamics of the supercavitating vehicle in the maneuvering will exhibit extremely strong unsteady characteristics, which will bring great challenges to the hydrodynamic acquisition, motion performance analysis and control scheme design and evaluation of the vehicle. Therefore, it is of great significance to study the hydrodynamic characteristics and formation mechanism of the vehicle in supercavitating state. In this paper, a three-dimensional numerical model for continuous motion of the supercavitating vehicle at vary

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Cheng, Zhaohai, Paul D. Winger, Shannon M. Bayse, and David Kelly. "Hydrodynamic Performance of Full-Scale T0 and T90 Codends with and without a Codend Cover." Journal of Marine Science and Engineering 10, no. 3 (2022): 440. http://dx.doi.org/10.3390/jmse10030440.

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The hydrodynamic performance of one full-scale T0 (mesh size 90 mm) and three T90 (mesh size 90, 100, and 110 mm) codends was investigated and compared using flume tank testing, with and without a small-mesh cover. We evaluated how flow velocity, mesh circularity, and drag changed in each codend at five different towing speeds (0.5–0.9 m/s). The results demonstrated that flow velocity decreased along the length of a codend, and this effect was pronounced in the T0 codend. Increasing the mesh size of T90 codends from 90 to 110 mm did not significantly affect flow velocity. A novel parameter, te

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Mardani, Neda, Kabir Suara, Helen Fairweather, Richard Brown, Adrian McCallum, and Roy C. Sidle. "Improving the Accuracy of Hydrodynamic Model Predictions Using Lagrangian Calibration." Water 12, no. 2 (2020): 575. http://dx.doi.org/10.3390/w12020575.

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While significant studies have been conducted in Intermittently Closed and Open Lakes and Lagoons (ICOLLs), very few have employed Lagrangian drifters. With recent attention on the use of GPS-tracked Lagrangian drifters to study the hydrodynamics of estuaries, there is a need to assess the potential for calibrating models using Lagrangian drifter data. Here, we calibrated and validated a hydrodynamic model in Currimundi Lake, Australia using both Eulerian and Lagrangian velocity field measurements in an open entrance condition. The results showed that there was a higher level of correlation (R

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He, Peng, and Huazhong Tang. "An Adaptive Moving Mesh Method for Two-Dimensional Relativistic Hydrodynamics." Communications in Computational Physics 11, no. 1 (2012): 114–46. http://dx.doi.org/10.4208/cicp.291010.180311a.

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AbstractThis paper extends the adaptive moving mesh method developed by Tang and Tang [36] to two-dimensional (2D) relativistic hydrodynamic (RHD) equations. The algorithm consists of two “independent” parts: the time evolution of the RHD equations and the (static) mesh iteration redistribution. In the first part, the RHD equations are discretized by using a high resolution finite volume scheme on the fixed but nonuniform meshes without the full characteristic decomposition of the governing equations. The second part is an iterative procedure. In each iteration, the mesh points are first redis

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31

Shen, Yanxia, Zhenduo Zhu, Qi Zhou, and Chunbo Jiang. "An improved dynamic bidirectional coupled hydrologic–hydrodynamic model for efficient flood inundation prediction." Natural Hazards and Earth System Sciences 24, no. 7 (2024): 2315–30. http://dx.doi.org/10.5194/nhess-24-2315-2024.

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Abstract. To improve computational efficiency while maintaining numerical accuracy, coupled hydrologic–hydrodynamic models based on non-uniform grids are used for flood inundation prediction. In these models, a hydrodynamic model using a fine grid can be applied to flood-prone areas, and a hydrologic model using a coarse grid can be used for the remaining areas. However, it is challenging to deal with the separation and interface between the two types of areas because the boundaries of the flood-prone areas are time dependent. We present an improved Multigrid Dynamical Bidirectional Coupled hy

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Wittbrodt, M. J., and M. J. Pechersky. "A Hydrodynamic Analysis of Fluid Flow Between Meshing Spur Gear Teeth." Journal of Mechanisms, Transmissions, and Automation in Design 111, no. 3 (1989): 395–401. http://dx.doi.org/10.1115/1.3259012.

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A hydrodynamic analysis of the pumping action resulting from the meshing of spur gear teeth was performed. Both compressible (for air) and incompressible (for oil) flow cases were considered. The computed results included the velocity of the fluid at the minimum flow area between the meshing teeth. The pressure and temperature in the mesh region were also computed for the compressible flow case. The velocities were computed as a function of the mesh angle with the pitch line velocity as the normalizing parameter. The calculations required a detailed analysis of the involute geometry to compute

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Yang, Ming, Shi Ping Zhao, Han Ping Wang, Lin Peng Wang, and Shao Zhu Wang. "Simulation on Torpedo Unsteady Hydrodynamic with the Movement in the Longitudinal Plane." Advanced Materials Research 791-793 (September 2013): 1073–76. http://dx.doi.org/10.4028/www.scientific.net/amr.791-793.1073.

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The unsteady hydrodynamic accurate calculation is the premise of submerged body trajectory design and maneuverability design. Calculation model of submerged body unsteady hydrodynamic with the movement in the longitudinal plane was established, which based on unsteady three-dimensional incompressible fluid dynamics theory. Variable speed translational and variable angular velocity of the pitching motion in the longitudinal plane of submerged body was achieved by dynamic mesh method. The unsteady hydrodynamic could be obtained by model under the premise of good quality grid by the results. Mode

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Ilyushchanka, Aliaksandr, Iryna Charniak, Vyacheslav Kaptsevich, et al. "Modeling filter material with an orthotropic structure based on woven mesh." MATEC Web of Conferences 317 (2020): 06001. http://dx.doi.org/10.1051/matecconf/202031706001.

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A description is given of a filter material with an orthotropic structure based on woven mesh; its advantages are considered, and design options for filter elements from this material are given that are of practical interest for cleaning various liquids, including transmission ones. A model is proposed and the results of calculations of the structural and hydrodynamic properties of a filter material with an orthotropic structure based on woven mesh are presented.

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SHINTANI, Tetsuya. "AN UNSTRUCTURED-CARTESIAN HYDRODYNAMIC SIMULATOR WITH LOCAL MESH REFINEMENT TECHNIQUE." Journal of Japan Society of Civil Engineers, Ser. B1 (Hydraulic Engineering) 73, no. 4 (2017): I_967—I_972. http://dx.doi.org/10.2208/jscejhe.73.i_967.

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36

Ershin, Sh A., and L. G. Khadieva. "Hydrodynamic resistance and refracting effect of a fine-mesh screen." Fluid Dynamics 23, no. 2 (1988): 249–54. http://dx.doi.org/10.1007/bf01051895.

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Hopkins, Philip F. "A new class of accurate, mesh-free hydrodynamic simulation methods." Monthly Notices of the Royal Astronomical Society 450, no. 1 (2015): 53–110. http://dx.doi.org/10.1093/mnras/stv195.

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Yalinewich, Almog, Elad Steinberg, and Re’em Sari. "RICH: OPEN-SOURCE HYDRODYNAMIC SIMULATION ON A MOVING VORONOI MESH." Astrophysical Journal Supplement Series 216, no. 2 (2015): 35. http://dx.doi.org/10.1088/0067-0049/216/2/35.

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Landrum, E. C., T. J. Conrad, S. M. Ghiaasiaan, and Carl S. Kirkconnell. "Hydrodynamic parameters of mesh fillers relevant to miniature regenerative cryocoolers." Cryogenics 50, no. 6-7 (2010): 373–80. http://dx.doi.org/10.1016/j.cryogenics.2010.01.017.

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Guo, Gaobo, Xinxing You, Fuxiang Hu, et al. "Hydrodynamic characteristics of fine-mesh minnow netting for sampling nets." Ocean Engineering 281 (August 2023): 114738. http://dx.doi.org/10.1016/j.oceaneng.2023.114738.

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Belikov, V. V., A. I. Aleksyuk, N. M. Borisova, E. S. Vasil’eva, and A. V. Glotko. "Experience in Numerical Hydrodynamic Simulation of Long River Reaches." Водные ресурсы 50, no. 4 (2023): 367–84. http://dx.doi.org/10.31857/s032105962304003x.

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The article formulates the main requirements to numerical algorithms for hydrodynamic 2D-modeling of long and very long river segments with lengths of up to several thousand kilometers. The main feature is the use of adaptive unstructured mesh along with algorithms that give correct values of water surface elevations on coarse mesh, taking into account abrupt changes of bed elevations. A hydrodynamic model of a segment of the Amur R. with a total length of 3 thous. km is presented, which is based on a numerical solution of two-dimensional shallow-water equations (Saint-Venant) by a new high-ac

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Chang, Philip, and Zachariah B. Etienne. "General relativistic hydrodynamics on a moving-mesh I: static space–times." Monthly Notices of the Royal Astronomical Society 496, no. 1 (2020): 206–14. http://dx.doi.org/10.1093/mnras/staa1532.

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ABSTRACT We present the moving-mesh general relativistic hydrodynamics solver for static space–times as implemented in the code, MANGA. Our implementation builds on the architectures of MANGA and the numerical relativity python package NRPy+. We review the general algorithm to solve these equations and, in particular, detail the time-stepping; Riemann solution across moving faces; conversion between primitive and conservative variables; validation and correction of hydrodynamic variables; and mapping of the metric to a Voronoi moving-mesh grid. We present test results for the numerical integra

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Wibking, Benjamin D., and Mark R. Krumholz. "quokka: a code for two-moment AMR radiation hydrodynamics on GPUs." Monthly Notices of the Royal Astronomical Society 512, no. 1 (2022): 1430–49. http://dx.doi.org/10.1093/mnras/stac439.

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ABSTRACT We present quokka, a new subcycling-in-time, block-structured adaptive mesh refinement (AMR) radiation hydrodynamics (RHD) code optimized for graphics processing units (GPUs). quokka solves the equations of HD with the piecewise parabolic method (PPM) in a method-of-lines formulation, and handles radiative transfer via the variable Eddington tensor (VET) radiation moment equations with a local closure. We use the amrex library to handle the AM management. In order to maximize GPU performance, we combine explicit-in-time evolution of the radiation moment equations with the reduced spee

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Shen, Hai Long, Mo Du, and Yu Min Su. "Study of Microminiature Autonomous Underwater Vehicle Hull Form Based on CFD Technique." Advanced Materials Research 512-515 (May 2012): 2682–85. http://dx.doi.org/10.4028/www.scientific.net/amr.512-515.2682.

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Based on CFD technique，this paper discusses the applicability of different turbulence models and mesh partition method which are used to predict the hydrodynamic performance of AUV. Firstly, the hydrodynamic performance prediction method was gotten and was validated, and three different shapes autonomous underwater vehicles were designed. The hydrodynamic performances of the three autonomous underwater vehicles were predicted. Then, the advantage and disadvantage of the four autonomous underwater vehicles were obtained by comparing the resistance and pressure distribution. Based on these, two

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Abdul Salam, Parveena Shamim, Wolfgang Bock, Axel Klar, and Sudarshan Tiwari. "Disease contagion models coupled to crowd motion and mesh-free simulation." Mathematical Models and Methods in Applied Sciences 31, no. 06 (2021): 1277–95. http://dx.doi.org/10.1142/s0218202521400066.

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Modeling and simulation of disease spreading in pedestrian crowds have recently become a topic of increasing relevance. In this paper, we consider the influence of the crowd motion in a complex dynamical environment on the course of infection of the pedestrians. To model the pedestrian dynamics, we consider a kinetic equation for multi-group pedestrian flow based on a social force model coupled with an Eikonal equation. This model is coupled with a non-local SEIS contagion model for disease spread, where besides the description of local contacts, the influence of contact times has also been mo

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Zhang, Raoyang, Chenghai Sun, Yanbing Li, et al. "Lattice Boltzmann Approach for Local Reference Frames." Communications in Computational Physics 9, no. 5 (2011): 1193–205. http://dx.doi.org/10.4208/cicp.021109.111110s.

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AbstractIn this paper we present a generalized lattice Boltzmann based approach for sliding-mesh local reference frame. This scheme exactly conserves hydrodynamic fluxes across local reference frame interface. The accuracy and robustness of our scheme are demonstrated by benchmark validations.

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LaBouff, G. A., and J. F. Booker. "Dynamically Loaded Journal Bearings: A Finite Element Treatment for Rigid and Elastic Surfaces." Journal of Tribology 107, no. 4 (1985): 505–13. http://dx.doi.org/10.1115/1.3261117.

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Hydrodynamic lubrication of dynamically loaded journal bearings with both rigid and flexible housings is treated by a unified computational procedure based on the finite element method. Numerical examples show effects of mesh density and housing flexibility under steady and periodic loading.

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Ling, Siqi, Wieland Marth, Simon Praetorius, and Axel Voigt. "An Adaptive Finite Element Multi-Mesh Approach for Interacting Deformable Objects in Flow." Computational Methods in Applied Mathematics 16, no. 3 (2016): 475–84. http://dx.doi.org/10.1515/cmam-2016-0003.

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AbstractWe consider a hydrodynamic multi-phase field problem to model the interaction of deformable objects. The numerical approach considers one phase field variable for each object and allows for an independent adaptive mesh refinement for each variable. Using the special structure of various terms allows interpolating the solution on one mesh onto another without loss of information. Together with a general multi-mesh concept for the other terms speedup by a factor of two can be demonstrated which improves with the number of interacting objects. The general concept is demonstrated on an exa

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Tschur, Nikolay, Iliya Mitin, Roman Korotaev, Vasily Mironov, and Victor Kazantsev. "Experimental study and numerical simulation of hydrodynamics for fish-like underwater vehicle." Robotics and Technical Cybernetics 11, no. 1 (2023): 40–44. http://dx.doi.org/10.31776/rtcj.11105.

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This article presents the results of experimental and computational modeling of the movement of a fish-like underwater robot. The experimental 3D model is constructed from photographs of Pacific bluefin tuna. This model allows us to study biomorphic swimming with various motion parameters, namely: the amplitude and frequency of strokes is set by the servo control signal, the angle between the tail fin and the elastic plate is set by the number and stiffness of springs in the hinge. The calculation method involves the joint solution of the equations of dynamics of the robot and the equations of

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Amosova, Elena Sergeevna, Kirill Sergeevich Kuznetsov, and Vitaly Sergeevich Lemeshev. "Mathematical modeling of hydrodynamic processes in the coastal waters of the Sea of Japan." Proceedings of the Institute for System Programming of the RAS 34, no. 5 (2022): 227–42. http://dx.doi.org/10.15514/ispras-2022-34(5)-16.

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A three-dimensional mathematical model of coastal water dynamics in the Peter the Great Bay of the Sea of Japan is presented. The system of Navier-Stokes equations is written under the assumption of a hydrodynamic approximation of an inhomogeneous fluid and takes into account turbulent exchange, wind stresses, friction forces, complex topography of the bottom and coastline. On the basis of hydrographic information, a numerical method is used to reconstruct the bottom topography and coastline. The free water surface equation is replaced by a singularly perturbed problem. In the FreeFem++ applic

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