Showing 521 - 540 results of 926 for search '"turbulence"', query time: 0.08s Refine Results
  1. 521

    Computational assessment of winglet-induced variations in pressure coefficients on NACA 4418 aircraft wings by Md. Abdullah, Mohammad Zoynal Abedin

    Published 2025-01-01
    “…Our simulations utilized a high-fidelity turbulence model to accurately capture the complex flow dynamics near the wing surface. …”
    Get full text
    Article
  2. 522

    Harmonization and Verification of Three National European Icing Forecast Models Using Pilot Reports by Christoph Knigge, Katie Bennett, Christine Le Bot, Mara Gehlen-Zeller, Svenja Koos

    Published 2022-01-01
    “…The Single European Sky Air Traffic Management Research (SESAR) program aims at modernizing and harmonizing the European airspace, which currently has a strongly fragmented character. Besides turbulence and convection, in-flight icing is part of SESAR and can be seen as one of the most important meteorological phenomena, which may lead to hazardous flight conditions for aircraft. …”
    Get full text
    Article
  3. 523

    Computational and experimental representation of simplified gas turbine bearing chamber geometries by Ahmad H. Attia, Budi Chandra, C.A. Toomer

    Published 2025-03-01
    “…The experimental setup is complemented by CFD modelling using the Volume of Fluid (VOF) approach with Large Eddy Simulations (LES) to model turbulence.Validation demonstrates high level of accuracy, with film thickness measurements showing an error margin of 0.22 % at lower flow rates and up to 1.7 % at higher velocities. …”
    Get full text
    Article
  4. 524

    Numerical Simulation of a Partly Filled Rectangular Tank with Fuel Oil by Farhan Lafta Rashid, Emad Qasem Hussein, Mudhar A. Al-Obaidi, Awesar A. Hussain

    Published 2023-09-01
    “…The usage of vertical shields allows for around 20% of the greatest contact energy to be deflected, which is attributed to the potential of generating turbulence and vortices by the baffle. …”
    Get full text
    Article
  5. 525

    Modelling of Wind Pressure Coefficients on C-Shaped Building Models by Monalisa Mallick, Abinash Mohanta, Awadhesh Kumar, Vivek Raj

    Published 2018-01-01
    “…For this study, numerical analysis has been carried out using ANSYS Fluent with k-ε model of turbulence. Computational fluid dynamics (CFD) techniques is used to evaluate the surface pressure on various faces of the model for angle of attack of 0° to 180° at an interval of 30° in a subsonic open circuit wind tunnel. …”
    Get full text
    Article
  6. 526

    Thermal Performance Improvement of Solar Parabolic Dish System Using Modified Spiral Coil Tubular Receiver by Rajkumar Malviya, Prashant V. Baredar, Anil Kumar

    Published 2021-01-01
    “…This innovative design of the absorber consists of a feature of a 5 mm extension to the spiral tube at the exit and entry; hence, the turbulence effect could be overcome. Experimental thermal efficiency was found the highest (i.e., ηthmax=75.98%) for May. …”
    Get full text
    Article
  7. 527

    Comparative analysis and manufacturing of airfoil structures suitable for use at low speeds by Sinan Fidan, Satılmış Ürgün, Mert Gökdemir

    Published 2022-12-01
    “…Wing profiles created at 0 to 20-degree attack angles are calculated in the simulation area equal to the actual wind tunnel scale, and equations are solved using the RNG k-Epsilon turbulence model. The process of developing the grids was realized with Ansys Mesher software. …”
    Get full text
    Article
  8. 528

    Numerical Analyses of Static Characteristics of Liquid Annular Seals Based on 2D LBM-LES Model by Zhenjie Zhang, Lulu Zhai, Jia Guo, Zuchao Zhu, Guoyou Chen

    Published 2021-01-01
    “…In this paper, a two-dimensional (2D) mathematical model for predicting the leakage flow rates and static characteristics of liquid seal is established, based on the lattice Boltzmann method (LBM) combined with the D2G9 velocity model for incompressible fluid and large eddy simulation (LES) turbulence model, in which the transformation equation of reference pressure is developed with the Bernoulli equation. …”
    Get full text
    Article
  9. 529

    Sink or break: Oil increases resistance of phytoplankton aggregates to fragmentation by Kai Ziervogel, Julia A. Sweet, Yixuan Song, Laura Bretherton, Matthew J. Rau, Antonietta Quigg, Uta Passow

    Published 2025-02-01
    “…Using phytoplankton aggregates, we demonstrate that marine snow with oil, termed marine oil snow, had a higher resistance to fragmentation compared to marine snow without oil when exposed to turbulence ex situ. At moderate shear levels, typical of the ocean mixed layer, 17% of marine snow without oil broke, whereas 63% of marine snow fragmented at intermediate shear. …”
    Get full text
    Article
  10. 530

    RANCANG BANGUN MODEL PEMBANGKIT LISTRIK TENAGA MIKRO HIDRO (PLTMH) MENGGUNAKAN PADDLE BREAST WHEEL by Ichlas Nur, Wahmin Rais, Nota Effiandi, Aidil Zamri, Yuli Yetri

    Published 2024-12-01
    “…The decrease in the wheel's rotation is related to the increase in turbulence (collision) due to the large discharge of water against the wheels' walls. …”
    Get full text
    Article
  11. 531

    Topology controls flow patterns in active double emulsions by Giuseppe Negro, Louise C. Head, Livio N. Carenza, Tyler N. Shendruk, Davide Marenduzzo, Giuseppe Gonnella, Adriano Tiribocchi

    Published 2025-02-01
    “…These emulsions can be self-assembled in the lab, and provide a pathway to form flow and topological patterns in active matter in a controlled way, as opposed to bulk systems that typically yield active turbulence.…”
    Get full text
    Article
  12. 532

    Evolution of power as an indicator of structural transformations: political and managerial aspect by V. V. Tyan

    Published 2019-06-01
    “…The efficiency of power (fighting corruption, ensuring of Gross Domestic Product (GDP) growth, solving social problems, etc.) is due to its ability to respond adequately to challenges and find consensus in decision-making in political turbulence.…”
    Get full text
    Article
  13. 533

    The Optimal Hydraulic Design of Centrifugal Impeller Using Genetic Algorithm with BVF by Xin Zhou, Yongxue Zhang, Zhongli Ji, Hucan Hou

    Published 2014-01-01
    “…Using Reynolds averaged N-S equations with a RNG k-ε two-equation turbulence model and log-law wall function to solve 3D turbulent flow field in the flow channel between blades of 6 designed impellers by CFD code FLUENT, the investigation on velocity distributions, pressure distributions, boundary vorticity flux distributions on blade surfaces, and hydraulic performance of impellers was presented and the comparisons of impellers by different design methods were demonstrated. …”
    Get full text
    Article
  14. 534

    THE IMPACTS OF ECONOMIC CRISIS ON FIRM-LEVEL INNOVATION IMPLEMENTATION: IMPLICATIONS FOR SUSTAINABLE DEVELOPMENT IN THE CONSTRUCTION INDUSTRY by Azubuike Anthony UGWUOKE, Carl ABBOTT

    Published 2019-09-01
    “…In the case of Nigeria, it has been argued that the rather frequent economic turbulence it experiences significantly affects firm-level innovation implementation in the local construction industry. …”
    Get full text
    Article
  15. 535

    A numerical assessment of the heterogeneous effects of innovative shroud profiles for horizontal axis wind turbine by Hossam Hamid, Rafea Mohamed Abd El Maksoud

    Published 2025-01-01
    “…A numerical investigation of various shrouds was conducted to identify the relationship between power augmentation and wind speed for wind turbines. The turbulence model SST k-ω was selected during the computational studies. …”
    Get full text
    Article
  16. 536

    Simulation Study on Dynamics of Hydraulic Turbines Used in Drilling Engineering by Yijin Zeng, Jin Wang, Shidong Ding, Haobo Zhou, Yanbin Zang, Fangtao Li

    Published 2020-01-01
    “…Using the CFD (computational fluid dynamics) method, based on the realizable k-ɛ turbulence model and Euler multiphase flow model, the effects of different external loads, blade numbers, blade installation angles, and flow rates on the force condition of turbine and the influence of different solid contents, particle sizes, and densities on turbine performance were studied. …”
    Get full text
    Article
  17. 537

    Estimation of bed shear stress and settling velocity with inertial dissipation method of suspended sediment concentration in cohesive sediment environments by Jongwi Chang, Guan-hong Lee, Ojudoo Darius Ajama, Wenjian Li

    Published 2024-12-01
    “…In steady uniform boundary layers, the dynamics of sediment resuspension and transport are controlled by near-bed turbulence, often quantified by bed shear stress, τb. …”
    Get full text
    Article
  18. 538

    Numerical Simulations on the Extinguishing Effect of Water Mist System with Different Parameters of Longitudinal Ventilation in Curve Tunnel Fire by Zhizhong Liu, Chen Chen, Mu Liu, Song Wang, Yuzhu Liu

    Published 2021-01-01
    “…Once a fire occurs in a long curve tunnel, the mixing of hot smoke flow and cold air leads to turbulence due to the curvature’s impact. This phenomenon results in a greater thermal pressure difference at the fire source and a substantially greater temperature field than in the straight tunnel. …”
    Get full text
    Article
  19. 539

    A numerical study on the wave loading on offshore structures of different cross-sectional geometries under the action of regular waves by Guilherme Fuhrmeister Vargas, Bruno Alvarez Scapin

    Published 2023-05-01
    “…The open-source computational code OpenFOAM v. 4.1 was applied in the considered cases, along with the OlaFlow extension, considering the application of a structured mesh, the VOF (Volume of Fluid) methodology for representing the free surface, and the turbulence modeling according to Reynolds averaged equations (RANS). …”
    Get full text
    Article
  20. 540

    Reacting Flow Characteristics of Wall-mounted Ramps in Strut-injection Scramjet Combustors under Varying Hydrogen Jet Pressures by A. Antony Athithan, S. Jeyakumar

    Published 2025-02-01
    “…A numerical investigation is performed using Reynolds Averaged Navier Stokes (RANS) equations in combination with the Shear Stress Transport (SST) k-ω turbulence model to understand flow mechanics at supersonic combustion. …”
    Get full text
    Article