Article
Physics, Fluids & Plasmas
S. Marrone, A. Colagrossi, J. Calderon-Sanchez, J. Martinez-Carrascal
Summary: This study presents a numerical investigation on the energy balance of violently accelerated flows confined inside a container, with experimental validation of the theoretical formulation. The complexity of fluid dynamic behavior inside the container is explained through numerical studies on two different fluids, water and oil, showing differences in Reynolds number by two orders of magnitude. Results are compared to experimental measurements in terms of fluid-wall interaction and energy dissipation.
PHYSICAL REVIEW FLUIDS
(2021)
Article
Chemistry, Multidisciplinary
Jon Martinez-Carrascal, L. M. Gonzalez-Gutierrez, Javier Calderon-Sanchez
Summary: In this work, the fundamental aspects of an aeronautical sloshing problem were studied using a simplified model. Experimental and numerical methods were employed to investigate the characteristics and mechanics of sloshing in different fluids. The findings provide insights into the sloshing force and its relationship with tank movement and liquid's center of mass.
APPLIED SCIENCES-BASEL
(2022)
Article
Engineering, Mechanical
Jon Martinez-Carrascal, Leo M. Gonzalez
Summary: This paper investigates the effects of filling level, density ratio, and initial amplitude on the damping ratio of fuel sloshing in aircraft wing fuel tanks. The results indicate that a 50% fill level maximizes damping, and there is a positive relationship between the damping ratio and density ratio. The intensity of sloshing force and the phase-shift between the force and tank motion are key factors in interpreting liquid dissipation.
JOURNAL OF FLUIDS AND STRUCTURES
(2022)
Article
Mechanics
J. Michel, D. Durante, A. Colagrossi, S. Marrone
Summary: The European H2020 project SLOWD aims to investigate the damping effect of fuel sloshing to reduce the design loads on aircraft wings. In this study, a simplified model was used to examine the sloshing problem of fuel inside wings, and a smoothed particle hydrodynamic model was adopted to evaluate the energy dissipation. The research found that simulating such violent flow is challenging, and comparisons between viscosity and different liquids were also discussed.
Article
Engineering, Marine
Chunlei Ma, Chengwang Xiong, Guowei Ma
Summary: The study shows that the interaction between the vortex caused by the shearing effect at the tip of vertical baffles and the free surface is the key mechanism for damping sloshing waves. Strong internal dissipation is crucial for suppressing sloshing waves, and the proper distribution of spacing distance can significantly reduce peak impact pressure.
Article
Engineering, Mechanical
S. Marrone, F. Saltari, J. Michel, F. Mastroddi
Summary: This study models the damping effect of sloshing flows in tanks under vertical harmonic oscillations using the Smoothed Particle Hydrodynamics (SPH) numerical method. The prediction of energy dissipation in these problems is important, especially in the aeronautic field for addressing sloshing-induced loads on aircraft wings. The enhanced SPH scheme is validated through a comparison with experimental data, showing that the 3D solver can recover the experimental rate of dissipated energy with comparable errors, while the 2D solution significantly underestimates the damping in high-energy sloshing regimes.(c) 2023 Elsevier Ltd. All rights reserved.
JOURNAL OF FLUIDS AND STRUCTURES
(2023)
Article
Engineering, Marine
Mashy D. Green, Yipeng Zhou, Jose M. Dominguez, Moncho G. Gesteira, Joaquim Peiro
Summary: The study presents a SPH formulation to accurately simulate sloshing frequencies and wave motion in tanks of arbitrary shape, using a modified version of the DualSPHysics code. The SPH scheme is verified through comparisons with analytical values and experimental results, showing good agreement in predicting sloshing forces and frequencies.
Article
Engineering, Multidisciplinary
C. Pilloton, P. N. Sun, X. Zhang, A. Colagrossi
Summary: This paper investigates the smoothed particle hydrodynamics (SPH) simulations of violent sloshing flows and discusses the impact of volume conservation errors on the simulation results. Different techniques are used to directly measure the particles' volumes and stabilization terms are introduced to control the errors. Experimental comparisons demonstrate the effectiveness of the numerical techniques.
COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING
(2024)
Article
Mechanics
Xiao Wen, Weiwen Zhao, Decheng Wan
Summary: This study demonstrates the necessity of multi-phase simulations for representing violently sloshing liquid through a comparative analysis between single-phase and multi-phase MPS methods. The results show that as the intensity of sloshing increases, the accuracy of single-phase simulation significantly decreases, whereas the multi-phase simulation agrees well with experimental data.
EUROPEAN JOURNAL OF MECHANICS B-FLUIDS
(2022)
Article
Engineering, Marine
Yan Su
Summary: This study investigates the shallow-water sloshing motions in a three-dimensional rectangular tank, finding that coupled surge-sway excitations lead to weaker nonlinear sloshing motions in the tank, with the sloshing wave crest lines eventually converging to the diagonal line of the tank.
JOURNAL OF MARINE SCIENCE AND TECHNOLOGY
(2021)
Article
Engineering, Geological
Hongchao Zheng, Zhenming Shi, Roland Kaitna, Fei Zhao, Tjalling de Haas, Kevin J. Hanley
Summary: Debris flows are saturated mixtures of debris grains and slurry consisting of water and clay. Pore pressure in slurry plays a crucial role in the behavior and runout of debris flows, but the mechanisms behind pore pressure diffusion are still uncertain. This study investigates the effects of debris composition and slurry density on pore pressure dissipation through consolidation tests. The results highlight the significance of micro-structural properties in interpreting debris-flow behavior.
ENGINEERING GEOLOGY
(2023)
Article
Engineering, Ocean
C. Pilloton, J. Michel, A. Colagrossi, S. Marrone
Summary: Resonant three-dimensional nonlinear sloshing in a square-base basin is numerically analyzed to study swirling instability and the influence of viscosity. Four different fluids with increasing Reynolds number are tested in an oscillating tank. The study reveals a strong correlation between energy dissipation and instability, showing that water dissipates more energy during rotation compared to liquids with higher viscosity. The numerical solutions are provided using an enhanced version of the Smoothed Particle Hydrodynamics (SPH) model called ������-LES-SPH, which is suitable for simulating violent free-surface flows.
APPLIED OCEAN RESEARCH
(2023)
Article
Thermodynamics
Zhongdi Duan, Yifeng Zhu, Chenbiao Wang, Yuchao Yuan, Hongxiang Xue, Wenyong Tang
Summary: This paper investigates the effects of sloshing on the thermodynamic responses of marine LNG fuel tanks through numerical modeling and theoretical analysis. A three-dimensional dynamic model is established to predict the pressure-temperature evolution inside the tank under sloshing conditions. The model is verified with experimental data and shows that sloshing uniformizes LNG temperature, enhances mass-heat transfer, and accelerates tank depressurization.
Article
Mechanics
Huabin Shi, Ping Dong, Xiping Yu, Yan Zhou
Summary: This paper proposes a theoretical formulation for dilatation/contraction in granular flows, considering both frictional and collisional effects. The formulation is verified analytically and numerically, demonstrating its application in studying the collapse of submerged granular columns.
JOURNAL OF FLUID MECHANICS
(2021)
Article
Mechanics
Qiong-Yao Wang, Li Jiang, Mu Chai, Hui Huang, Jian-Hua Tang
Summary: A numerical analysis is conducted to investigate fluid slosh within a partially filled horizontal cylindrical tank with an elastic membrane restraining the free surface. The addition of the membrane can reduce slosh amplitude and shift the slosh frequency, improving the antislosh effectiveness of the tank.
MECHANICS BASED DESIGN OF STRUCTURES AND MACHINES
(2023)
Article
Mechanics
M. Antuono, S. Marrone, A. Di Mascio, A. Colagrossi
Summary: This study modifies the previous method of introducing LES in the SPH framework by adding velocity deviation and the tensile instability control technique to achieve a quasi-Lagrangian LES-SPH model, which is successfully tested in simulating two-dimensional and three-dimensional turbulent problems.
Article
Engineering, Marine
Xiang-Li Fang, Andrea Colagrossi, Ping-Ping Wang, A-Man Zhang
Summary: The present work develops an accurate and robust axisymmetric SPH method by introducing the Riemann solver into the framework. Through three benchmark tests, including shock tube test, point explosion test, and blast wave problem test, the accuracy of the method is verified. It is successfully applied to practical simulations in ocean engineering.
Article
Engineering, Multidisciplinary
E. Rossi, D. Durante, S. Marrone, A. Colagrossi
Summary: The Diffused Vortex Hydrodynamics (DVH) is a widely validated Vortex Particle Method used for cost-effective simulations of viscous flows past bodies at moderate and high Reynolds numbers. A novel multi-resolution technique is presented to limit the number of particles in the computational domain and improve solver efficiency. Simulations of planar flow past five cylindrical sections at Re = 10,000 show complex vorticity patterns, highlighting the advantages of the DVH approach.
COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING
(2022)
Article
Mechanics
C. Pilloton, A. Bardazzi, A. Colagrossi, S. Marrone
Summary: This study numerically investigates sloshing flows inside a ship LNG fuel tank using the Smoothed Particle Hydrodynamics (SPH) model, showing energetic sloshing flows induced under three different filling height conditions. Comparison with experimental data is performed, and critical discussions are conducted to highlight the capability of the numerical solver in providing good local pressure estimations.
EUROPEAN JOURNAL OF MECHANICS B-FLUIDS
(2022)
Article
Physics, Fluids & Plasmas
D. Durante, C. Pilloton, A. Colagrossi
Summary: This paper investigates the planar flow past a circular cylinder for Reynolds numbers between 1000 and 10 000. The study focuses on the presence of complex patterns in the force-time signals as the system transitions from periodic to chaotic regime. Numerical simulations and analysis tools commonly used in dynamical systems research were employed to analyze the flow and discuss its relationship with near and far wake topologies.
PHYSICAL REVIEW FLUIDS
(2022)
Article
Engineering, Marine
Tomas Lopez-Olocco, Leo M. Gonzalez-Gutierrez, Javier Calderon-Sanchez, Adolfo Maron Loureiro, Leandro Saavedra Ynocente, Ana Bezunartea Barrio, Nicolas Vivar Valdes
Summary: Recently, experimental and numerical studies have shown the advantages of adding clumped weights at discrete positions of mooring lines. An experimental study was conducted to confirm the influence of these weights, and the results were validated using a finite element numerical code. This provides a valuable dataset for code validations and future discussions on the impact of clumped weights on floating platforms.
JOURNAL OF MARINE SCIENCE AND ENGINEERING
(2022)
Article
Thermodynamics
A. Broatch, P. Olmeda, J. Garcia-Tiscar, A. Felgueroso, M. Chavez-Modena, L. M. Gonzalez, M. Gelain, A. Couilleaux
Summary: Thermal management is a major challenge for new generation turbofan aero-engines, and surface air-cooled oil coolers (SACOCs) are one of the most promising heat exchangers. This study proposes and implements an experimental methodology to characterize SACOCs mounted in turbofan bypass ducts.
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2022)
Article
Chemistry, Multidisciplinary
Jon Martinez-Carrascal, L. M. Gonzalez-Gutierrez, Javier Calderon-Sanchez
Summary: In this work, the fundamental aspects of an aeronautical sloshing problem were studied using a simplified model. Experimental and numerical methods were employed to investigate the characteristics and mechanics of sloshing in different fluids. The findings provide insights into the sloshing force and its relationship with tank movement and liquid's center of mass.
APPLIED SCIENCES-BASEL
(2022)
Article
Mechanics
J. Michel, D. Durante, A. Colagrossi, S. Marrone
Summary: The European H2020 project SLOWD aims to investigate the damping effect of fuel sloshing to reduce the design loads on aircraft wings. In this study, a simplified model was used to examine the sloshing problem of fuel inside wings, and a smoothed particle hydrodynamic model was adopted to evaluate the energy dissipation. The research found that simulating such violent flow is challenging, and comparisons between viscosity and different liquids were also discussed.
Article
Thermodynamics
Miguel Chavez-Modena, Leo Miguel Gonzalez, Eusebio Valero, Alberto Broatch, Jorge Garcia-Tiscar, Andres Felgueroso
Summary: This study investigates the use of surface air-cooled oil coolers (SACOC) in the aerospace industry and evaluates their performance using numerical simulations. The results demonstrate the accuracy of the numerical model in obtaining results and improving understanding of the physical phenomenon.
APPLIED THERMAL ENGINEERING
(2023)
Article
Thermodynamics
A. Broatch, J. Garcia-Tiscar, A. Felgueroso, M. Chavez-Modena, L. M. Gonzalez, E. Valero
Summary: The implementation of Surface Air-Cooled Oil Coolers (SACOCs) in new generation turbofans is increasing due to the need for improving engine thermal management. Rounding the sharp edges of the heat exchanger can enhance heat exchange and reduce the aerodynamic impact of the fins.
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2023)
Article
Chemistry, Multidisciplinary
Leon Cillie Malan, Chiara Pilloton, Andrea Colagrossi, Arnaud George Malan
Summary: In this study, the slosh-induced damping in a vertically excited tank filled with liquid water or oil and air is investigated through experimental and numerical simulations. Two different numerical approaches are used to simulate the experiments, and reasonable agreement on the energy dissipation evolution is observed between the methods. The Smoothed Particle Hydrodynamics (SPH) simulations show a faster convergence rate but tend to overpredict the total dissipation compared to the experiment, while the incompressible liquid and weakly compressible gas model simulations by Finite Volume Method (FVM) tend to underestimate it. The comparison of center of mass positions shows that the SPH results have larger vertical center of mass motion compared to the FVM results, especially for the high Reynolds number case. This difference may be attributed to the absence of the air phase in the SPH simulations and the need for higher spatial resolutions in the FVM simulations to resolve the complex gas-liquid interactions, especially in three dimensions.
APPLIED SCIENCES-BASEL
(2022)
Article
Engineering, Mechanical
Jon Martinez-Carrascal, Marco Pizzoli, Francesco Saltari, Franco Mastroddi, Leo Miguel Gonzalez-Gutierrez
Summary: The aim of this paper is to provide a Reduced Order Model (ROM) for accurate prediction of liquid induced dissipation in violent and vertical sloshing problems across a wide range of liquid properties. The Delta Smoothed Particle Hydrodynamics (delta-SPH) formulation is used to establish a simulation database, from which an equivalent mechanical model is identified and a hypersurface-based ROM is defined. The ROM effectively estimates bouncing ball design parameters and consistently matches SPH test simulations, indicating its practical and resource-efficient use for predicting critical aspects of vertical sloshing.
NONLINEAR DYNAMICS
(2023)
Article
Mechanics
J. Michel, A. Colagrossi, M. Antuono, S. Marrone
Summary: In this paper, a novel high-order weakly compressible smoothed particle hydrodynamics scheme is proposed, which is based on an accurate approximation of the pressure gradient and the use of numerical Riemann fluxes. The scheme can fulfill the dynamic free-surface boundary condition and prevent the onset of the tensile instability in inner regions of the fluid domain by switching between non-conservative and conservative formulations of the pressure gradient. The numerical diffusion is obtained using Riemann solvers and allows for a high-order convergence rate of the diffusive terms with low numerical dissipation.
Article
Engineering, Mechanical
Hong-Guan Lyu, Peng-Nan Sun, Andrea Colagrossi, A-Man Zhang
Summary: This paper presents an attempt to predict cavitation phenomena within the smoothed particle hydrodynamics (SPH) framework. A cavitation model based on the equation of state is proposed, along with techniques such as volume adaptive scheme (VAS), particle shifting technique (PST), and tensile instability control (TIC) to improve numerical accuracy and stability. The model is also coupled with a large eddy simulation (LES) model to account for turbulence effects. The results demonstrate that the SPH model provides accurate predictions for cavitation phenomena.
ACTA MECHANICA SINICA
(2023)
