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Artykuły w czasopismach na temat „Experimental and numerical approaches”

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Data publikacji: 15 marca 2025

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1

Nesládek, M., M. Španiel, J. Jurenka, J. Růžička i J. Kuželka. "Fretting fatigue – Experimental and numerical approaches". International Journal of Fatigue 44 (listopad 2012): 61–73. http://dx.doi.org/10.1016/j.ijfatigue.2012.05.015.

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Chiew, Yee-Meng, Jihn-Sung Lai i Oscar Link. "Experimental, Numerical and Field Approaches to Scour Research". Water 12, nr 6 (19.06.2020): 1749. http://dx.doi.org/10.3390/w12061749.

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Scour, which represents a fascinating and complex engineering problem involving a number of physical mechanisms and interactions, has motivated a vast amount of research following different but complementary methodological approaches such as experimental, numerical, and field methods. Far from being completely understood, scour remains one of the main hazards for many structures such as bridges, submarine pipelines, offshore wind turbines, etc. Thus, scour is currently a very active field of research with important open questions that are unanswered and practical challenges to be tackled. This Special Issue aims to bridge knowledge gaps by collecting fourteen papers to provide a wide view of scour types and different research approaches, with innovative ideas and inferences.

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Badurowicz, Przemysław, i Dawid Pacek. "Determining Ricocheting Projectiles’ Temperature Using Numerical and Experimental Approaches". Materials 15, nr 3 (25.01.2022): 928. http://dx.doi.org/10.3390/ma15030928.

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This paper describes the process of creating a numerical FEM (finite element method) model of the 5.56 × 45 mm SS109 projectile. The model was used to calculate the temperatures occurring in the projectile materials during the impact on the steel plate at an angle of 45°. The purpose of the investigation is to estimate the ability of a ricocheting projectile to cause ignition. For the same projectile, experimental tests were also carried out under the conditions adopted for the numerical investigation in order to validate the FEM model. During the experiment, temperature was measured with a thermal camera; the phenomenon was also recorded with a colour high-speed camera.

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4

Lin, Shu-Li, Sheng-Yang Lee, Long-Yi Lee, Wen-Ta Chiu, Che-Tong Lin i Haw-Ming Huang. "Vibrational analysis of mandible trauma: experimental and numerical approaches". Medical & Biological Engineering & Computing 44, nr 9 (22.08.2006): 785–92. http://dx.doi.org/10.1007/s11517-006-0095-4.

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Gomes, Hugo Dutra, Maria Carolina dos Santos Freitas, Luciano Pessanha Moreira, Flavia de Paula Vitoretti i Jose Adilson de Castro. "Deformations Limits Analysis of Sheet Metal Manufatured through the Incremental Forming Process". Materials Science Forum 899 (lipiec 2017): 272–77. http://dx.doi.org/10.4028/www.scientific.net/msf.899.272.

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The present study is primarily engaged in the implementation of the incremental stamping process in a computerized numeric control This paper presents two different approaches to this forming process, an experimental and other numerical. Experimental used by the computer numerical control to perform the printing process and performs numerical simulations of the process using the finite element method. Some parameters are analyzed in both approaches, such as product geometry effects, tool geometry, tool speed, tool path, contact conditions and mechanical properties of the materials.

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6

KHARIF, C., J. P. GIOVANANGELI, J. TOUBOUL, L. GRARE i E. PELINOVSKY. "Influence of wind on extreme wave events: experimental and numerical approaches". Journal of Fluid Mechanics 594 (14.12.2007): 209–47. http://dx.doi.org/10.1017/s0022112007009019.

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The influence of wind on extreme wave events in deep water is investigated experimentally and numerically. A series of experiments conducted in the Large Air–Sea Interactions Facility (LASIF-Marseille, France) shows that wind blowing over a short wave group due to the dispersive focusing of a longer frequency-modulated wavetrain (chirped wave packet) may increase the time duration of the extreme wave event by delaying the defocusing stage. A detailed analysis of the experimental results suggests that extreme wave events may be sustained longer by the air flow separation occurring on the leeward side of the steep crests. Furthermore it is found that the frequency downshifting observed during the formation of the extreme wave event is more important when the wind velocity is larger. These experiments have pointed out that the transfer of momentum and energy is strongly increased during extreme wave events.Two series of numerical simulations have been performed using a pressure distribution over the steep crests given by the Jeffreys sheltering theory. The first series corresponding to the dispersive focusing confirms the experimental results. The second series which corresponds to extreme wave events due to modulational instability, shows that wind sustains steep waves which then evolve into breaking waves. Furthermore, it was shown numerically that during extreme wave events the wind-driven current could play a significant role in their persistence.

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Souza, Andrews, Eduardo Marques, Carlos Balsa i João Ribeiro. "Characterization of Shear Strain on PDMS: Numerical and Experimental Approaches". Applied Sciences 10, nr 9 (10.05.2020): 3322. http://dx.doi.org/10.3390/app10093322.

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Polydimethylsiloxane (PDMS) is one of the most popular elastomers and has been used in different fields, especially in biomechanics research. Among the many interesting features of this material, its hyperelastic behavior stands out, which allows the use of PDMS in various applications, like the ones that mimic soft tissues. However, the hyperelastic behavior is not linear and needs detailed analysis, especially the characterization of shear strain. In this work, two approaches, numerical and experimental, were proposed to characterize the effect of shear strain on PDMS. The experimental method was implemented as a simple shear testing associated with 3D digital image correlation and was made using two specimens with two thicknesses of PDMS (2 and 4 mm). A finite element software was used to implement the numerical simulations, in which four different simulations using the Mooney–Rivlin, Yeoh, Gent, and polynomial hyperelastic constitutive models were performed. These approaches showed that the maximum value of shear strain occurred in the central region of the PDMS, and higher values emerged for the 2 mm PDMS thickness. Qualitatively, in the central area of the specimen, the numerical and experimental results have similar behaviors and the values of shear strain are close. For higher values of displacement and thicknesses, the numerical simulation results move further away from experimental values.

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8

Stanciu, Mariana Domnica, Silviu Marian Nastac, Voichita Bucur, Mihai Trandafir, Gheorghe Dron i Alina Maria Nauncef. "Dynamic Analysis of the Musical Triangles—Experimental and Numerical Approaches". Applied Sciences 12, nr 12 (20.06.2022): 6275. http://dx.doi.org/10.3390/app12126275.

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This paper addresses the experimental and numerical dynamic analysis of curved bars used as percussion musical instruments. These structures are known as triangles, being made of various metal materials. The study was based on the experimental analysis of the dynamic response over time and the frequency of three types of triangles, different in material and size. Subsequently, finite element analysis of the same structures modeled with the SimCenter 12 program was performed. The results were compared, highlighting the contribution of material type and geometry in obtaining vibration modes, frequency spectrum, and structural damping coefficient. Between the experimental and the numerical analysis, the obtained errors were below 2.2% in terms of their natural frequencies. The study also highlights the complementarity of the two methods in understanding the vibration modes of triangles.

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9

Fanara, Arthur, Luc Courard, Frédéric Collin i Julien Hubert. "Transfer properties in recycled aggregates concrete: Experimental and numerical approaches". Construction and Building Materials 326 (kwiecień 2022): 126778. http://dx.doi.org/10.1016/j.conbuildmat.2022.126778.

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10

de Camargo, Felipe Vannucchi. "Survey on Experimental and Numerical Approaches to Model Underwater Explosions". Journal of Marine Science and Engineering 7, nr 1 (15.01.2019): 15. http://dx.doi.org/10.3390/jmse7010015.

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The ability of predicting material failure is essential for adequate structural dimensioning in every mechanical design. For ships, and particularly for military vessels, the challenge of optimizing the toughness-to-weight ratio at the highest possible value is essential to provide agile structures that can safely withstand external forces. Exploring the case of underwater explosions, the present paper summarizes some of the fundamental mathematical relations for foreseeing the behavior of naval panels to such solicitation. A broad state-of-the-art survey links the mechanical stress-strain response of materials and the influence of local reinforcements in flexural and lateral-torsional buckling to the hydrodynamic relations that govern the propagation of pressure waves prevenient from blasts. Numerical simulation approaches used in computational modeling of underwater explosions are reviewed, focusing on Eulerian and Lagrangian fluid descriptions, Johnson-Cook and Gurson constitutive materials for naval panels, and the solving methods FEM (Finite Element Method), FVM (Finite Volume Method), BEM (Boundary Element Method), and SPH (Smooth Particle Hydrodynamics). The confrontation of experimental tests for evaluating different hull materials and constructions with formulae and virtual reproduction practices allow a wide perception of the subject from different yet interrelated points of view.

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11

Sousa, Ricardo J. Alves de, i Mariusz Ptak. "Special Issue: Accident Analysis and Prevention: Experimental and Numerical Approaches". Applied Sciences 10, nr 2 (10.01.2020): 508. http://dx.doi.org/10.3390/app10020508.

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12

Kawahara, G., K. Takeishi, T. Ohnishi i M. Uhlmann. "W051003 Experimental and numerical approaches to turbulent rectangular-duct flow". Proceedings of Mechanical Engineering Congress, Japan 2012 (2012): _W051003–1—_W051003–5. http://dx.doi.org/10.1299/jsmemecj.2012._w051003-1.

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13

Simonet, Emilie, Christian Bourdillon, Jean-François Hervagault i Michel Gervais. "Bistability in Coupled Open Substrate Cycles: Numerical and Experimental Approaches". Journal of Physical Chemistry 100, nr 49 (styczeń 1996): 19148–52. http://dx.doi.org/10.1021/jp961734u.

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14

Coudray, Paul. "Propagation in sol-gel channel waveguides: numerical and experimental approaches". Optical Engineering 37, nr 4 (1.04.1998): 1105. http://dx.doi.org/10.1117/1.601944.

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15

Couto, David L. P., Elza M. M. Fonseca, Paulo A. G. Piloto, Jorge M. Meireles, Luísa M. S. Barreira i Débora R. S. M. Ferreira. "Perforated cellular wooden slabs under fire: Numerical and experimental approaches". Journal of Building Engineering 8 (grudzień 2016): 218–24. http://dx.doi.org/10.1016/j.jobe.2016.10.007.

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16

Swider, P., G. Jacquet-Richardet i J. C. Pereira. "Interactions between numerical and experimental approaches in composite structure dynamics". Composite Structures 43, nr 2 (październik 1998): 127–35. http://dx.doi.org/10.1016/s0263-8223(98)00096-8.

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17

LEE, Soon-Bok, i Jae-Won JANG. "Experimental and Numerical Approaches for Reliability Evaluation of Electronic Packaging". Journal of Computational Science and Technology 7, nr 2 (2013): 265–77. http://dx.doi.org/10.1299/jcst.7.265.

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18

Zech, Y., S. Soares-Frazão, B. Spinewine i N. Le Grelle. "Dam-break induced sediment movement: Experimental approaches and numerical modelling". Journal of Hydraulic Research 46, nr 2 (marzec 2008): 176–90. http://dx.doi.org/10.1080/00221686.2008.9521854.

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19

Koussa, F., J. Defrance, P. Jean i P. Blanc-Benon. "Acoustic performance of gabions noise barriers: Numerical and experimental approaches". Applied Acoustics 74, nr 1 (styczeń 2013): 189–97. http://dx.doi.org/10.1016/j.apacoust.2012.07.009.

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20

Durka, T., T. Van Gerven i A. Stankiewicz. "Microwaves in Heterogeneous Gas-Phase Catalysis: Experimental and Numerical Approaches". Chemical Engineering & Technology 32, nr 9 (wrzesień 2009): 1301–12. http://dx.doi.org/10.1002/ceat.200900207.

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Wang, Xupeng, Yan Zhang, Zhu Gao, Xiaomin Ji i Lin Li. "Modeling and analysis of impact based on numerical and experimental approaches". Advances in Mechanical Engineering 10, nr 12 (grudzień 2018): 168781401881306. http://dx.doi.org/10.1177/1687814018813062.

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Impact is a universal phenomenon and has serious influences on the dynamic characteristics of mechanical system, so it is critical to accurately describe the effects of impact. In this work, a numerical and comprehensive method is presented to calculate the impact force in clearance joint during impact process, which has higher effectiveness and accuracy than the most popular used L-N model. Different from traditional contact models, where the coefficient of restitution is assumed to be a constant value nearly to 1 during impact process, the improved model in this work sets up the model of restitution coefficient related to two important parameters for impact phenomenon, which are initial impact velocity and the yield strength of the materials in clearance joints. A great number of numerical and experimental results are introduced and compared to validate the improved contact force model; it needs to be highlighted that the numerical results are based on the improved model and the most popular impact force model presented by Lankarani and Nikravesh, and the experimental results are based on two typical pendulum experimental test rigs. It can be concluded that (1) when compared to the experimental results, the numerical results based on the improved model are in better agreement than those based on Lankarani and Nikravesh impact force model; (2) the numerical results based on the improved model are in reasonable agreement with the experimental results, and the relative errors of impact force and restitution coefficient are all no more than 10% between numerical and experimental results; and (3) the improved contact force model is effective and can exactly describe the impact effects between two bodies in mechanical system.

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22

Ben Said, Lotfi, Hamdi Hentati, Mondher Wali, Badreddine Ayadi i Muapper Alhadri. "Damage Investigation in PMMA Polymer: Experimental and Phase-Field Approaches". Polymers 16, nr 23 (26.11.2024): 3304. http://dx.doi.org/10.3390/polym16233304.

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The prediction of crack patterns is one of the main tasks in the field of fracture mechanics in order to prevent the total damage of various materials, particularly Methyl Methacrylate Polymer (PMMA). The few data in the literature underscores the need for additional experiments on PMMA to analyze the performance of the phase-field approach to predict crack trajectories. The main purpose of this study is to verify the accuracy of the phase-field approach with a staggered scheme, based on spectral decomposition, for predicting crack propagation in PMMA specimens by comparing it with the experimental results presented in this work. Based on the tensile test and SEM analysis, this material exhibits brittle behavior. The numerical approach considers cracks as diffuse damage rather than sharp discontinuities, enabling a more accurate representation of brittle fracture processes. Experimental determination of material properties is used in the development of the numerical model. The main aim of these experiments is to explore how variations in load and specific geometries influence fracture initiation and crack trajectory. Consequently, these experiments will establish a dataset to further validate numerical advancements.

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23

Kim, Jeong-Hyeon, Doo-Hwan Park, Seul-Kee Kim, Jeong-Dae Kim i Jae-Myung Lee. "Lateral Deflection Behavior of Perforated Steel Plates: Experimental and Numerical Approaches". Journal of Marine Science and Engineering 9, nr 5 (4.05.2021): 498. http://dx.doi.org/10.3390/jmse9050498.

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This study aimed to investigate the behavioral characteristics of the lateral deflection of a simply supported perforated steel plate subjected to axial compression. Investigating the lateral deflection of the perforated plate is of great significance because the buckling limit of structural members can be predicted not only by strength but also by displacement (or deflection). For this purpose, we conducted buckling experiments by considering various variables of the perforated plate, such as opening size, thickness, and aspect ratio. In addition, a series of elastoplastic large deflection analyses were performed using the commercial finite element analysis program, and the calculated results were compared along with the experimental results. Finally, practical curves, which can predict lateral deflection with an increase in axial displacement, and the occurrence point of ultimate strength are reported in this study. The results showed that there was a distinct difference in the behavior of lateral deflection between perforated plates with different opening ratios. The local buckling occurred mainly around the opening and was more dominant with an increase in the opening ratio. In addition, the ultimate strength of the perforated plate was determined at the end of the local buckling phase.

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Siyan, Peter, Boboye Oyeyemi i Olabode Agunbiade. "Road Accident Analysis and Prevention in Nigeria: Experimental and Numerical Approaches". International Journal of Advanced Scientific Research and Development (IJASRD) 6, nr 5 (10.06.2019): 01. http://dx.doi.org/10.26836/ijasrd/2019/v6/i6/60603.

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Ahmadi-Sénichault, A., V. Canseco, N. Sefrioui-Chaibainou, A. Omari i H. Bertin. "Displacement of Colloidal Dispersions in Porous Media: Experimental & Numerical Approaches". Diffusion Foundations 7 (czerwiec 2016): 53–68. http://dx.doi.org/10.4028/www.scientific.net/df.7.53.

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The main objective of this paper is to give more insight on colloids deposition and re-entrainment in presence of a rough surface. Experiments on retention and release of colloids in a porous medium are first presented. The influence of physicochemical and hydrodynamic conditions is investigated. The experimental results cannot be qualitatively interpreted using the DLVO theory and knowledges at pore scale are then needed. A 3D numerical simulation approach at the pore scale is therefore proposed where the motion of colloids is solved in presence of collector surfaces bearing various kinds of asperities and by taking into account physico-chemical interactions calculated at each time step during colloid movement. It is obviously observed that both deposition and mobilization of particles are dependent on solution chemistry and hydrodynamic conditions and are significantly affected by the form and size of the local roughness of the pore surface. Therefore, depending on solution ionic strength and surface topography, colloids may be adsorbed or not and when a particle is retained an increase of flow strength is then needed to remove it and such an increase is specific to the location of occurrence of the adsorption step. In general, simulation results allow us to explain our experimental results that show that by steeply increasing the flow strength, more and more fractions of particles retained inside the porous medium are released until all particles are removed.

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26

Govindaraj, Moorthy, HN Narasimha Murthy, Shivkumar Patil, Sudarsan K., Nandagopan O.R, Ajith Kumar K. i Krishna Munishaiah. "Buckling behaviour of underwater vessels by experimental, numerical and analytical approaches". Journal of Naval Architecture and Marine Engineering 11, nr 1 (10.06.2014): 15–28. http://dx.doi.org/10.3329/jname.v11i1.16087.

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This paper reports the buckling behaviour of glass/vinylester polymer composite filament wound shells of underwater vessels. The shells were tested for buckling under hydrostatic loading and microstrains as a function of applied hydrostatic pressure were measured. Numerical analysis was performed for critical buckling pressure based on Block Lancoz buckling analysis and for Von-Mises stresses and strains based on static analysis using ANSYS. Von-Mises stresses corresponding to hydrostatic pressures were computed analytically by Reduced Stiffness Matrix method. The numerical results of critical buckling pressure for 10 mm thick vessels showed 7.12 % deviation from the experimental results. The microstrains predicted by FEA were in good agreement with the experimental strains. Von-Mises stresses predicted by FEA agreed well with the analytical computations.DOI: http://dx.doi.org/10.3329/jname.v11i1.16087

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27

KOMINE, Shingo, Toshihiro SERA, Masataka ARAI, Susumu kudo, Yasuhiro SUNAGA i Hideo YOKOTA. "Intercellular Ca2+ propagation in endothelial cells by numerical and experimental approaches". Proceedings of the Bioengineering Conference Annual Meeting of BED/JSME 2017.29 (2017): 1F33. http://dx.doi.org/10.1299/jsmebio.2017.29.1f33.

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Breton, J., D. Thomas i J. F. Hervagault. "Dissipative structures in a two-cell system: Numerical and experimental approaches". Proceedings of the National Academy of Sciences 83, nr 3 (1.02.1986): 551–55. http://dx.doi.org/10.1073/pnas.83.3.551.

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Yu, W., V. W. Hong, C. Ferreira i G. A. M. van Kuik. "Validation of engineering dynamic inflow models by experimental and numerical approaches". Journal of Physics: Conference Series 753 (wrzesień 2016): 022024. http://dx.doi.org/10.1088/1742-6596/753/2/022024.

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Arlaud, E., S. Costa D’Aguiar i E. Balmes. "Receptance of railway tracks at low frequency: Numerical and experimental approaches". Transportation Geotechnics 9 (grudzień 2016): 1–16. http://dx.doi.org/10.1016/j.trgeo.2016.06.003.

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Léorat, Jacques, i Caroline Nore. "Interplay between experimental and numerical approaches in the fluid dynamo problem". Comptes Rendus Physique 9, nr 7 (wrzesień 2008): 741–48. http://dx.doi.org/10.1016/j.crhy.2008.07.006.

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Regenauer-Lieb, K., J. P. Petit i D. Yuen. "Quasi-adiabatic shear zones in the lithosphere: numerical and experimental approaches". Visual Geosciences 4, nr 2 (październik 1999): 1–14. http://dx.doi.org/10.1007/s10069-999-0002-x.

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TAKEHARA, Shoichiro, Yoshiaki TERUMICHI, Masahiro NOHMI i Kiyoshi SOGABE. "Numerical and Experimental Approaches on the Motion of a Tethered System". Journal of System Design and Dynamics 2, nr 5 (2008): 1106–17. http://dx.doi.org/10.1299/jsdd.2.1106.

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Nasser El Dine, Sleimane, Xavier Mininger, Caroline Nore, Raphael Zanella, Frederic Bouillault i Jean-Luc Guermond. "Impact of Magnets on Ferrofluid Cooling Process: Experimental and Numerical Approaches". IEEE Transactions on Magnetics 56, nr 1 (styczeń 2020): 1–4. http://dx.doi.org/10.1109/tmag.2019.2949362.

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Thevenet, D., N. Lautrou i J. Y. Cognard. "Fatigue crack initiation in naval welded joints: experimental and numerical approaches". PAMM 8, nr 1 (grudzień 2008): 10243–44. http://dx.doi.org/10.1002/pamm.200810243.

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Tăcutu, Laurenţiu, Ilinca Năstase, Florin Bode, Cristiana Verona Croitoru, Angel Dogeanu i Mihnea Sandu. "Experimental and numerical investigation on the convective thermal plume around the head of the standing and lying hu-man body". E3S Web of Conferences 85 (2019): 02016. http://dx.doi.org/10.1051/e3sconf/20198502016.

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This paper presents a study for two thermal plumes generated by two humanoid thermal manikins, one standing and one lying down. The research was approached from a numerical and experimental perspective. The numerical model represents an operating room (OR) with two surgeons, a patient and a unidirectional air flow (UAF) diffuser. The experimental study was made in a climatic chamber, having a similar air distribution system, using particle image velocimetry (PIV) and infrared thermography (IR) measurements. The purpose of the study was to characterize the thermal plumes of the two manikins by numerical and experimental studies. The results obtained from these different approaches were compared with each other and with the ones from the literature in order to validate our numerical models.

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ZAINAL ABIDIN, Nurrul Amilin, Mohd Zairil Hafizi MOHD JAILANI, Ahmad Kamil HUSSAIN i Jamaluddin MAHMUD. "Experimental-Numerical Analysis of Woven Laminates under Tension". Materials Science 26, nr 4 (17.08.2020): 505–12. http://dx.doi.org/10.5755/j01.ms.26.4.22898.

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Woven composite laminates are rapidly replacing unidirectional composite laminates in terms of structural application. Nevertheless, the deformation theory for woven laminate has not been well established compared to unidirectional laminate. Thus, this paper aims to investigate the deformation behavior of woven laminates under uniaxial tension using both the experimental and numerical approaches. The tensile tests were conducted initially according to ASTM D3039 on samples made of 2×2 twill weave carbon fiber prepeg in order to attain the material constants (E1, E2, G12 and ʋ12) and the deformation behavior from the stress-strain curve. This is important as the material parameters and values should be input correctly to ensure an accurate numerical analysis. The second stage involves the Finite Element Analysis (FEA) using ANSYS and analytical analysis using MATLAB. The results of extension for both numerical approaches have been compared with reference to the experimental results. The results show that the error is less than 30%. The failure analysis also has been performed to determine mode of failure using ANSYS and MATLAB by employing Maximum Stress failure criterion. The displacements during First Ply Failure (FPF) and Last Ply Failure (LPF) between ANSYS and MATLAB showed good correlation where the percentage difference is less than 1%. Therefore, it can be concluded that the current implemented procedure for unidirectional laminates could be a noble alternative approach to simulate woven laminates under tension accurately.

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Albano, M., A. V. Nenarokomov, A. Delfini, S. A. Budnik, D. M. Titov, F. Volpini, O. M. Alifanov, M. Marchetti i A. V. Morzhukhina. "Low-Orbit Environment Effects on Carbon/SiC Composites: Experimental and Numerical Approaches". Journal of Engineering Thermophysics 29, nr 4 (październik 2020): 561–75. http://dx.doi.org/10.1134/s1810232820040049.

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Sampaio, Ricardo, Alexandre D’Agostini Neto, Humberto de Camargo Gissoni, Rubens Marras Filho, Pedro Gayer de Araújo, Gustavo Roque da Silva Assi i Murilo Marangon Cicolin. "Comprehensive stay vane vibration analysis by means of numerical and experimental approaches". IOP Conference Series: Earth and Environmental Science 774, nr 1 (1.06.2021): 012123. http://dx.doi.org/10.1088/1755-1315/774/1/012123.

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González, David R., Paul Wallman, Matthew Sanford, Jeremy Monat i Joel Carney. "Characterization of Rocket-Plume Fluid-Dynamic Environment Using Numerical and Experimental Approaches". Journal of Spacecraft and Rockets 50, nr 3 (maj 2013): 527–39. http://dx.doi.org/10.2514/1.a32319.

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Lee, Jong-Sub, M. Khoa Tran i Changho Lee. "Evolution of layered physical properties in soluble mixture: Experimental and numerical approaches". Engineering Geology 143-144 (sierpień 2012): 37–42. http://dx.doi.org/10.1016/j.enggeo.2012.06.008.

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Frosina, Emma, Luca Romagnuolo, Antonella Bonavolontà, Assunta Andreozzi, Adolfo Senatore, Francesco Fortunato i Pino Giliberti. "Evaporative emissions in a fuel tank of vehicles: numerical and experimental approaches". Energy Procedia 148 (sierpień 2018): 1167–74. http://dx.doi.org/10.1016/j.egypro.2018.08.025.

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Al Habis, Nuha, Chang Liu, Jean-Baptiste Dumuids i Khalid Lafdi. "Intelligent design of conducting network in polymers using numerical and experimental approaches". RSC Advances 6, nr 97 (2016): 95010–20. http://dx.doi.org/10.1039/c6ra19477j.

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Maron, Bernhard, Christian Garthaus, Andreas Hornig, Florian Lenz, Michael Hübner i Maik Gude. "Forming of carbon fiber reinforced thermoplastic composite tubes – Experimental and numerical approaches". CIRP Journal of Manufacturing Science and Technology 18 (sierpień 2017): 60–64. http://dx.doi.org/10.1016/j.cirpj.2016.09.004.

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Tonnet, Nicolas, i Jean-Michel Herri. "Methane hydrates bearing synthetic sediments—Experimental and numerical approaches of the dissociation". Chemical Engineering Science 64, nr 19 (październik 2009): 4089–100. http://dx.doi.org/10.1016/j.ces.2009.05.043.

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Miccoli, Lorenzo. "Seismic performances of AAC masonry: A review of experimental and numerical approaches". ce/papers 2, nr 4 (wrzesień 2018): 301–9. http://dx.doi.org/10.1002/cepa.878.

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Miccoli, Lorenzo. "Seismic performances of AAC masonry: a review of experimental and numerical approaches". Mauerwerk 22, nr 5 (30.08.2018): 314–28. http://dx.doi.org/10.1002/dama.201800023.

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Agati, Giuliano, Adriano Evangelisti, Serena Gabriele, Franco Rispoli, Paolo Venturini i Domenico Borello. "Liquid film formation: prediction accuracy of different numerical approaches". Journal of Physics: Conference Series 2385, nr 1 (1.12.2022): 012138. http://dx.doi.org/10.1088/1742-6596/2385/1/012138.

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Abstract In counteracting fouling phenomenon in gas turbines, which leads to system inefficiencies and performance degradation, water washing technique is very often adopted. Water droplets sprays are injected and, hitting the solid surfaces, remove the dirt deposition. Among the collateral undesirable phenomena related to water washing, blades erosion and liquid film formation are the most remarkable. Despite the former issue was extensively assessed by the authors in previous works, up to the authors’ knowledge the risk of liquid film formation due to water washing was scarcely investigated. Liquid film formation and spreading on a solid surface is a complex phenomenon involving a large number of physical events, such as: droplets impact on a solid surface, splashing phenomena, liquid film dragging under the effect of the carrier phase and droplets separation from the film in proximity of geometry discontinuities. In this paper, an extensively used experimental test case involving all these phenomena was used to test different numerical wall film models available in literature. The test case consists in the injection of a liquid jet in a high velocity crossflow. Some of the liquid jet mass impacts on the opposite solid surface generating a wall film which develops under the dragging effect of the crossflow. A Lagrangian approach was used to track the suspended droplets within the flow field by also considering the turbulent dispersion by means of a Random Walk model. Droplets-wall interaction is considered according to the Stanton-Rutland model, which provides the outcome of a collision (deposit, rebound or splashing), depending on the local impact conditions. If a droplet sticks on a solid boundary, a liquid film generates. Droplets atomization is also accounted for by using the Madabhushi model while Friederich separation model was selected to take into account the detachment of droplets from the film at the geometry edge. Three different numerical simulations have been performed based on different approaches used to solve the liquid film evolution, namely Eulerian one-way coupling, Eulerian two-way coupling and Lagrangian two-way coupling. Numerical results have been compared with the experimental ones from both a qualitative and a quantitative point of view. The wall film shape, its spatial distribution and the variation of the film thickness of the wall centreline have been compared between experimental and numerical simulations proving that the Lagrangian 2-way coupling approach better reproduces the liquid film dynamics observed in the experiments.

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Klingl, Stefan, Stefan Lecheler i Michael Pfitzner. "Experimental, numerical and theoretical investigations of Tesla turbines". E3S Web of Conferences 113 (2019): 03003. http://dx.doi.org/10.1051/e3sconf/201911303003.

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We use analytical, numerical and experimental methods to characterize the laminar flow inside a Tesla turbine rotor gap. A comparison based on one particular set of operating conditions mutually validates the three approaches. The simplicity of the analytical flow model allows for a cost efficient optimization of the underlying turbine parameters. Performance charts exhibit general trends and serve as a guide for preliminary turbine design and optimization. In terms of the ratio of half the gap width to inlet radius and the ratio of outletto inlet radius, the designer of a tesla turbine has to find a compromise between optimal efficiency and optimal power output.

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Metrikin, Ivan, Sveinung Løset, Nils Albert Jenssen i Sofien Kerkeni. "Numerical Simulation of Dynamic Positioning in Ice". Marine Technology Society Journal 47, nr 2 (1.03.2013): 14–30. http://dx.doi.org/10.4031/mtsj.47.2.2.

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AbstractNumerical simulation of dynamic positioning (DP) in ice is a novel research topic that has potential in many industrial and scientific applications. This paper reviews some challenges associated with numerical ice modeling and presents a classification of approaches for modeling the ice loads in DP simulations. The approaches are classified into three groups: empirical and statistical models, experimental data series methods, and physically based modeling. The strengths and weaknesses of the approaches are summarized, and recommended uses are outlined in this paper. In addition, a novel, nonsmooth, discrete element model of a DP vessel in managed ice is presented. The model was used to perform a numerical multibody simulation of a series of model tests with a conceptual Arctic drillship on DP in managed ice using the commercial physics engine Vortex. The numerical model simulated the ice basin, the DP vessel, the managed ice, the surrounding fluid, and their interactions. Comparison of the simulation results with experimental data showed that for head-on ice drift, the numerical model reproduced the experimental results reasonably well. However, for higher ice drift angles, discrepancies between the simulation results and the model testing data increased considerably. Possible reasons for the discrepancies are discussed in the paper, along with suggestions for future research. To the best of the authors’ knowledge, both the classification of various approaches for simulating DP in ice and the high-fidelity numerical DP model are novel and have not been published previously.

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