Showing 361 - 380 results of 696 for search '"turbulence"', query time: 0.04s Refine Results
  1. 361

    Performance Analysis of Buffer-Aided FSO Relaying with an Energy Harvesting Relay by Chadi Abou-Rjeily

    Published 2025-01-01
    “…A numerical analysis is also presented over a turbulence-induced gamma–gamma fading channel highlighting the impacts of the data rate threshold levels, relay position, relay transmit power and propagation conditions on the achievable performance levels. …”
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    Article
  2. 362

    Mechanical and Formability Evaluation of ST14 Alloys Welded by Friction Stir Welding by Mahmoud Afshari, Nima Fakhralmobasheri, Mohammad Reza Samadi, Amirhossein Alavi, Hossein Norozi Foroushani

    Published 2021-01-01
    “…In all samples welded with the optimal parameters, tensile failure occurred in the base metal region. Turbulence in the region confirms the presence of WC particles. …”
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    Article
  3. 363

    An Investigation on the Effect of Endwall Movement on the Tip Clearance Loss Using Annular Turbine Cascade by Hesham M. El-Batsh, Magdy Bassily Hanna

    Published 2011-01-01
    “…The steady incompressible turbulent flow was obtained by solving Reynolds averaged Navier-Stokes equations and by employing shear stress transport (SST) k-ω turbulence model. …”
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  4. 364

    Book review: Kravchenko S. A. “Sociology of Digitalisation: university textbook” by N. N. Meshcheryakova, L. A. Vasilenko

    Published 2022-01-01
    “…The author of the book being reviewed concludes that there is a need for a humanistic digital turn, a change in approaches and focus of modern scientific knowledge, which should be integrated and multidisciplinary, based on the social and natural sciences integration, aimed at the analysis of disequilibrium systems in which disequilibrium, turbulence do not exclude the tendencies towards organisation and self-organisation.The peer-reviewed work is an educational publication and it is aimed at developing students’ ability to think critically about the consequences of digitalisation and make balanced managerial decisions. …”
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    Article
  5. 365

    Effects of leading-edge defects of the NACA 0015 airfoil on aerodynamic performance with various Reynolds number by Ulfa Hanifah Nurhaliza, James Julian, Fitri Wahyuni, Waridho Iskandar

    Published 2023-12-01
    “…Standard k-epsilon model is being used in this research as turbulence model. For the smooth airfoil, stall conditions occur at an AoA of 11º, while for the defective airfoil, they occur at an AoA of 9^° for each Re variation. …”
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  6. 366

    Contradictions of economic policy in the context of new risks and challenges in the development of the world economy by E. N. Smirnov

    Published 2023-07-01
    “…The relevance of the problems considered in the article is associated with the growth of uncertainty and increased turbulence in the development of the world economy in recent years, as well as with the ambiguous impact of this instability on the economies of individual countries. …”
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    Article
  7. 367

    Enhancing Hydraulic Efficiency of Pelton Turbines Through Computational Fluid Dynamics and Metaheuristic Optimization by Guillermo Barragan, Sebastian Atarihuana, Edgar Cando, Victor Hidalgo

    Published 2025-01-01
    “…The validation of the proposed method was carried out with numerical simulations using the OpenFOAM CFD program and taking into account the case study turbine’s operating conditions, as well as the k-SST turbulence model. The CFD simulation results and operational data from the case study turbine from the “Illuchi N°2” hydrocenter have been compared in order to validate the proposed methodology. …”
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    Article
  8. 368

    Vortex Shedding Lock-In due to Pitching Oscillation of a Wind Turbine Blade Section at High Angles of Attack by Craig Meskell, Alberto Pellegrino

    Published 2019-01-01
    “…The unsteady flow around a pitching two-dimensional airfoil section (NREL S809) has been simulated using unsteady RANS with the transition SST turbulence model. This geometry is chosen to represent a wind turbine blade in a standstill configuration. …”
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  9. 369

    Study of the Pressure Drop and Flow Field in Standard Gas Cyclone Models Using the Granular Model by Nabil Kharoua, Lyes Khezzar, Zoubir Nemouchi

    Published 2011-01-01
    “…The discrepancies between the present numerical simulation and the experimental results taken from the existing literature, which are caused by the mixture and turbulence models simplifying assumptions, are discussed in this paper.…”
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  10. 370

    Ignition by Hot Transient Jets in Confined Mixtures of Gaseous Fuels and Air by Abdullah Karimi, M. Razi Nalim

    Published 2016-01-01
    “…Hybrid turbulent-kinetic schemes using some skeletal reaction mechanisms and detailed mechanisms are good predictors of the experimental data. …”
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    Article
  11. 371

    Time-Dependent Effects of Glaze Ice on the Aerodynamic Characteristics of an Airfoil by Narges Tabatabaei, Michel J. Cervantes, Chirag Trivedi

    Published 2018-01-01
    “…Furthermore, the accuracy of a two-equation eddy viscosity turbulence model, the shear stress transport (SST) model, is investigated in the case of the dynamic load analysis over a glaze-iced airfoil. …”
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  12. 372

    Smoke Simulation with Detail Enhancement in Ship Fires by Rui Tao, Hongxiang Ren, Xiao Yang, Delong Wang, Jian Sun

    Published 2025-01-01
    “…The computational results demonstrate that turbulence details can be effectively captured in a low-resolution grid while maintaining the real-time performance of the simulation. …”
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  13. 373

    “Green” Synthesis of Metallic Nanoparticles by Sonoelectrochemical and Sonogalvanic Replacement Methods by Оrest Kuntyi, Galyna Zozulya, Andriy Kytsya

    Published 2021-01-01
    “…Due to the generation of turbulence, microjets, and shock waves, ultrasound increases mass transfer and formation of radicals in aqueous solutions and, accordingly, accelerates the processes of nucleation and growth of MNPs. …”
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  14. 374

    Designing the Business Model of Qarz-Al-Hasna Digital Bank by Sajad Golchin, Asadollah Ganjali, Sayyed Saeed Shamsinajad

    Published 2024-06-01
    “…Extensive environmental turbulence has caused various changes in economic, social and cultural fields, and has become the driver of many changes in the context of needs and preferences of customers. …”
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  15. 375

    Numerical Modeling of Local Scour Depth at Non-Uniform Piers by Dakheel Ahmed A., Ismaeel Abaas J., Makki Jamal S.

    Published 2024-12-01
    “…This study examines the efficacy of the computational fluid dynamics (CFD) model in generating simulations of the scour depth along a bridge pier via the Flow3D software (version 10.1.1.3). k-ε model is built to more accurately consider the generation of turbulent kinetic energy and the anisotropic characteristics of the turbulence. …”
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  16. 376

    Measuring the Risk Spillover Effect of RCEP Stock Markets: Evidence from the TVP-VAR Model and Transfer Entropy by Yijiang Zou, Qinghua Chen, Jihui Han, Mingzhong Xiao

    Published 2025-01-01
    “…The results indicate that the signing of the RCEP has strengthened the interconnectedness of member countries’ stock markets, with an overall upward trend in volatility spillover effects, which become even more pronounced during periods of financial turbulence. Within the structure of RCEP member stock markets, China is identified as a net risk receiver, while countries like Japan and South Korea act as net risk spillover contributors. …”
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  17. 377

    Numerical Study of Traffic Pollutant Dispersion within Different Street Canyon Configurations by Yucong Miao, Shuhua Liu, Yijia Zheng, Shu Wang, Yuan Li

    Published 2014-01-01
    “…The Computational Fluid Dynamics (CFD) model used in this study—Open Source Field Operation and Manipulation (OpenFOAM) software package—was firstly validated against the wind-tunnel experiment data by using three different k-ε turbulence models. And then the patterns of flow and dispersion within three different kinds of street canyon configuration under the perpendicular approaching flow were numerically studied. …”
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  18. 378

    Phase-Field Modelling of Bimodal Dendritic Solidification During Al Alloy Die Casting by Maryam Torfeh, Zhichao Niu, Hamid Assadi

    Published 2025-01-01
    “…Tracking the microstructural evolution during high-pressure die casting of Al-Si alloys is challenging due to the rapid solidification, varying thermal conditions, and severe turbulence. The process involves a transition from slower cooling in the shot sleeve to rapid cooling in the die cavity, resulting in a bimodal dendritic microstructure and nucleation of new finer dendrite arms on fragmented externally solidified crystals. …”
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  19. 379

    Numerical Simulation of Water-Based Alumina Nanofluid in Subchannel Geometry by Mohammad Nazififard, Mohammadreza Nematollahi, Khosrow Jafarpur, Kune Y. Suh

    Published 2012-01-01
    “…Turbulent forced convection flow of Al2O3/water nanofluid in a single-bare subchannel of a typical pressurized water reactor is numerically analyzed. …”
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  20. 380

    The Entrepreneurial perception of the small enterprise environment by P. Tomski, E. Wysłocka

    Published 2019-08-01
    “…Although they were not directly asked about the level of turbulence of the environment, the obtained results, maintaining the characteristics of the environment in the middle of the scales (dynamism, hostility, heterogeneity) indicate that this environment is not perceived in a drastic and pessimistic manner.…”
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