Showing 201 - 220 results of 270 for search '"kinetic energy"', query time: 0.06s Refine Results
  1. 201

    Flow circulation dynamics in spur dike field enhanced by roughness elements by Muhammad Aqeel, Sohail Iqbal, Maaz Khan, Ghufran Ahmed Pasha, Usman Ghani, Afzal Ahmed, Xianrui Zhao

    Published 2025-03-01
    “…Numerical simulations using the CFD code FLUENT (ANSYS) were conducted to analyze flow intensity, turbulent kinetic energy, and circulation patterns. The findings show that REs significantly alters circulation dynamics, transforming a concentrated recirculation eye into multiple recirculation zones. …”
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  2. 202

    Development of a high-order global dynamical core using the discontinuous Galerkin method for an atmospheric large-eddy simulation (LES) and proposal of test cases: SCALE-DG v0.8.0 by Y. Kawai, H. Tomita, H. Tomita

    Published 2025-02-01
    “…In the climatic test cases, such as the Held–Suarez test, the kinetic energy spectra indicated the advantage of effective resolution when large polynomial orders were used. …”
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  3. 203

    Validation of the SMOS Mission for Space Weather Operations: The Potential of Near Real‐Time Solar Observation at 1.4 GHz by M. Flores‐Soriano, C. Cid, R. Crapolicchio

    Published 2021-03-01
    “…We also find a correlation between the amount of solar flux released at 1.4 GHz and the speed, angular width, and kinetic energy of the CMEs. We conclude that the unique capability of the SMOS mission to perform 24 h near real‐time observation of the Sun with full polarimetry makes it a promising instrument for monitoring solar interferences affecting GNSS, radar, and L‐band wireless communications, as well as for early assessment of flares geoeffectiveness. …”
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  4. 204

    Numerical Simulation of Distribution Characteristics of Hydraulic Fish Habitat Index in 90° Spur Dike Areas by JIANG Li, DENG Xiaolong, ZHONG Liang, CHEN Jingyuan, ZHONG Xueyi, LIU Xiangqian, FU Qiang

    Published 2022-01-01
    “…The study of fish habitat in spur dike areas is of great significance to the ecological protection of rivers.In this paper,the distribution characteristics of the hydraulic fish habitat index in a spur dike area are discussed by a three-dimensional (3D) mathematical model for water flow.The results reveal that ① the flow velocity increases with the Froude number Fr;the width of the back flow area behind the dike decreases gradually,and the main flow area changes from rapidly varied flow to gradually varied flow and gradually returns to uniform flow.② The flow velocity gradient G in the main flow and back flow areas is small;the areas with G&gt;2 are mainly concentrated on the left and right banks of the water channel and near the spur dike head,and on the cross-section,G declines as Fr grows.③ The distribution characteristics of the kinetic energy gradient M on the section of the spur dike from upstream to downstream are similar to those of G.The high-value areas of M appear on the right bank of the water channel and in the section with the relative channel width B<sup>+</sup> of 0.25~0.40 near the spur dike head,but M is small on the left bank of the water channel and has little change along the way.④ With the increase in Fr,the velocity suitability S<sub>u</sub> in the upstream of the spur dike decreases,while S<sub>u</sub> at the spur dike and in the downstream cross-section of the spur dike increases.S<sub>u</sub> of the back flow area in the downstream of the spur dike is small,generally not more than 0.3,while S<sub>u</sub> in the main flow area may exceed 0.8,which indicates that the spawning habitat of fish in this area is better.The research results can provide a reference for the protection of fish resources in spur dike areas and the construction of ecological waterway projects.…”
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  5. 205

    Upper Ocean Thermal Responses to Sea Spray Mediated Turbulent Fluxes during Typhoon Passage by Lianxin Zhang, Changlong Guan, Chunjian Sun, Siyu Gao, Shaomei Yu

    Published 2015-01-01
    “…Diagnostic analysis indicates that sea spray acts as an additional source of the air-sea turbulent fluxes and plays a key role in increasing the turbulent kinetic energy in the upper ocean, which enhances the temperature diffusion there. …”
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  6. 206

    Study on Blasting Characteristics of Soft-Hard Rock Strata Based on Energy Fields and Particle Expansion Loading Algorithm by Jianbin Cui, Liangfu Xie, Yongjun Qin, Xuejun Liu, Wei Qiao, Zeyu Hu, Liming Wu, Liewang Qiu, Ke Huang

    Published 2022-01-01
    “…(iii) When detonated in the hard rock, if the structural plane is about 2 times the radius of crushing area from blasthole, compared with pure hard rock case, the peak kinetic energy and peak friction energy are increased by about 15 times and 2.6 times, respectively, and the peak strain energy is attenuated by 18%.…”
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  7. 207

    Numerical and experimental analysis of body armor polymer penetration resistance against 7.62 mm bullet by Gebrewahid Asgedom, Kumlachew Yeneneh, Getu Tilahun, Besufekad Negash

    Published 2025-01-01
    “…Results showed that ECO-UHMWPE vests exhibited significantly lower stress values and minimal deformation, particularly at close ranges with high projectile kinetic energy, outperforming Kevlar vests. Ballistic testing validated the FEA, with ECO-UHMWPE vests achieving a 22.44 % weight reduction (3.49 kg, 12 mm thick) compared to traditional Kevlar vests (4.5 kg, 15 mm thick) and offering a 30 % reduction in deformation and a 25 % increase in energy absorption. …”
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  8. 208
  9. 209

    The comparisons on wave breaking captured by non-hydrostatic model with or without turbulent dissipation by Dongbin He, Dongbin He, Yanli He, Yanli He, Yanli He, Hongfei Mao, Hongfei Mao, Junyu Li

    Published 2025-01-01
    “…And the laminar data presents greater change for velocities near the surface and bottom, resulting in a significantly larger proportion of kinetic energy flux after wave breaking, while the k-ϵ data can give better consistency with the measured in velocity calculations.…”
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  10. 210

    Two-stage frequency regulation for wind turbines with adaptive coefficients and optimized power trajectory by Zhiting Zhou, Hui Li, Jie Zheng, Hongtao Tan, Xuewei Xiang, Ran Yao

    Published 2025-03-01
    “…To address this issue, a frequency regulation scheme for wind turbines with adaptive coefficients and optimized power trajectory is proposed, considering both the kinetic energy release stage and rotor speed recovery stage. …”
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  11. 211

    The molecular dynamics study of the thermal behavior of argon flow in a nanochannel with changes in nanochannel cross-section by Reza Karimi, Ali Marzban, Davood Toghraie

    Published 2025-03-01
    “…The results of this research show that, the increase in the number of wall atoms in a three-dimensional nanochannel causes a greater depletion of fluid kinetic energy due to the loss of temperature. The growth rate is denser in the central region of the three-dimensional nanochannel than in its two-dimensional counterpart. …”
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  12. 212

    CFD Simulation of an Industrial Dust Cyclone Separator: A Comparison with Empirical Models: The Influence of the Inlet Velocity and the Particle Size on Performance Factors in Situ... by Tchinda Vermande Paganel, Epee Fabrice Alban, Mezoue Adiang Cyrille, Claude Valery Ngayihi Abbe

    Published 2024-01-01
    “…Numerical simulation of the flow by Fluent code using three numerical models: the first based on the dissipation of kinetic energy by viscosity (RNG) K-epsilon and standard K-epsilon as well as the last based on the solution of Reynolds stress equations (RSM), combined with the multiphase mixing model, gave interesting results in terms of the pressure and flow field in the separator, the variation of inlet velocity, and the variation of particle size. …”
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  13. 213

    The Lift Enhancement Effect of a New Fluidic Oscillator on High-Lift Wings by Tong Zhao, Yalei Bai

    Published 2025-01-01
    “…A deeper analysis of the fluidic oscillator’s working principle reveals that periodic oscillations dominate the turbulent kinetic energy and Reynolds shear stress, driving enhanced chordwise momentum exchange. …”
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  14. 214

    Evaluation of the PANS method for the prediction of the fluid flow in a cyclone separator by Bitar, Zaher, Uystepruyst, David, Beaubert, François, Méresse, Damien, Morin, Céline

    Published 2023-05-01
    “…The sensitivity of the PANS approach to the unresolved to total kinetic energy ratio $f_{k}$ was also evaluated with two different definitions. …”
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  15. 215

    The Seasonal Correlation Between El Niño and Southern Oscillation Events and Sea Surface Temperature Anomalies in the South China Sea from 1958 to 2024 by Jun Song, Lingxiang Yao, Junru Guo, Yanzhao Fu, Yu Cai, Meng Wang

    Published 2025-01-01
    “…Finally, an analysis of atmospheric anomalies and shear kinetic energy anomalies relative to SST anomalies reveals a significant seasonal SST response, particularly during the summer of El Niño years and the winter of La Niña years. …”
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  16. 216

    Quadrature-Phase-Locked-Loop-Based Back-Electromotive Force Observer for Sensorless Brushless DC Motor Drive Control in Solar-Powered Electric Vehicles by Biswajit Saha, Aryadip Sen, Bhim Singh, Kumar Mahtani, José A. Sánchez-Fernández

    Published 2025-01-01
    “…The system also incorporates a regenerative braking mechanism, extending the vehicle’s range by efficiently recovering kinetic energy through the battery with 30.60% efficiency. …”
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  17. 217

    Analysis on the Difference of Impact Response between Single Coal-Rock Particle and the Box Structure-Based Tail Beam by Li-rong Wan, Zhe Li, Yang Yang, Ran Li

    Published 2021-01-01
    “…Through the changes of kinetic energy and internal energy of the box structure-based tail beam system, the contact response of collision contact zone, and noncollision contact zone of the box structure-based tail beam, the response difference of box structure-based tail beam when coal-rock particle impacts on the box structure-based tail beam is analyzed. …”
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  18. 218

    The formulation of sound transmission problems through the boundaries of three-dimensional media and through plates by A. V. Zakharov

    Published 2024-03-01
    “…The passage of a plane harmonic wave through a plane boundary of media is described by the equations of conservation of kinetic energy and conservation of the amount of motion. …”
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  19. 219

    Modelling and analysis of selected platform dynamics issues of a land robot by Zbigniew Dziopa, Andrzej Zuska, Dariusz Więckowski

    Published 2024-12-01
    “…The energy method was used to derive the analytical relationships, which requires the determination of the kinetic energy, the potential energy, the dissipative Rayleigh function and external non-potential forces. …”
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  20. 220

    Estimate of the Arctic Convective Boundary Layer Height from Lidar Observations: A Case Study by L. Di Liberto, F. Angelini, I. Pietroni, F. Cairo, G. Di Donfrancesco, A. Viola, S. Argentini, F. Fierli, G. Gobbi, M. Maturilli, R. Neuber, M. Snels

    Published 2012-01-01
    “…The scope of the present study is to compare several approaches to estimate the PBL height, by using lidar observations, meteorological measurements by radio soundings, and a zero-order one-dimensional model based on a parameterization of the turbulent kinetic energy budget within the mixing layer, under the assumptions of horizontal homogeneity, and neglecting radiation and latent heat effects. …”
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