Showing 561 - 580 results of 926 for search '"turbulence"', query time: 0.05s Refine Results
  1. 561

    The Effect of Reynolds Number on Jet in Asymmetric Co-Flows: A CFD Study by Ziyan Teng, I. A. Sofia Larsson, T. Staffan Lundström, B. Daniel Marjavaara

    Published 2018-01-01
    “…For further validation and understanding, more measurements in the shear layer and simulations with more advanced turbulence models are necessary.…”
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    Article
  2. 562

    Optimization strategies for multi‐block structured CFD simulation based on Sunway TaihuLight by Xiaojing Lv, Wenhao Leng, Zhao Liu, Chengsheng Wu, Fang Li, Jiuxiu Xu

    Published 2025-01-01
    “…Abstract Decomposition and solver are the main performance bottlenecks of multi‐block structured CFD simulation involving complex industrial configurations such as aero‐engine, shock‐boundary layer interactions, turbulence modeling and so on. In this article, we proposed several optimization strategies to improve the computing efficiency of multi‐block structured CFD simulation based on Sunway TaihuLight super computing system, including: (1) a load balancing decomposition approach combined with recursive segmentation of undirected graphs and block mapping for multi‐structured blocks, (2) two‐level parallelism that utilizes MPI + OpenACC2.0* hybrid parallel paradigms with various performance optimizations such as data preprocessing, reducing unnecessary loops of subroutine calls, collapse, and tile syntax, memory access optimization between the main memory and local data memory (LDM), and (3) a carefully orchestrated pipeline and register communication strategy between computing processor elements (CPEs) to tackle the dependence of LU‐SGS (Lower‐Upper Symmetric Gauss–Seidel). …”
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  3. 563

    The Study on the Shock Wave Propagation Rule of a Gas Explosion in a Gas Compartment by Shu-Chao Lin, Qing-Zhao Hou, Anna Derlatka, Shan Gao, Jin-Jun Kang, Xiao-Lei Dong

    Published 2022-01-01
    “…Combined with the k-ε turbulence model of general application, a refined finite element model of a utility tunnel’s gas compartment filled with the methane/air mixture is developed. …”
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    Article
  4. 564
  5. 565

    Are Firms in Corporate Groups More Resilient During an Economic Crisis? Evidence from the Manufacturing Sector in Poland by Barbara Jankowska, Katarzyna Mroczek-Dąbrowska, Marian Gorynia, Marlena Dzikowska

    Published 2016-01-01
    “…The above mentioned benefits are of even greater importance during times of economic turbulence. Their involvement in a corporate group should theoretically allow firms to perform better. …”
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    Article
  6. 566

    Effects of Rotation at Different Channel Orientations on the Flow Field inside a Trailing Edge Internal Cooling Channel by Matteo Pascotto, Alessandro Armellini, Luca Casarsa, Claudio Mucignat, Pietro Giannattasio

    Published 2013-01-01
    “…A commercial 3D RANS solver including a SST turbulence model has been used to compute the isothermal steady air flow inside both static and rotating passages. …”
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  7. 567

    Trajectory of Steady Growth or Next Disbalance of Mechanisms of the World Economy by E. N. Smirnov, V. N. Kirillov

    Published 2019-11-01
    “…Main objective of the article – assessment of problems and opportunities of speeding up of world economic growth in the context of the crisis phenomena and turbulence in economy. Complication and reformatting of the economic relations between the countries represents serious challenges for modern economic dynamics. …”
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    Article
  8. 568

    Analysis of Warm and Cold Season Thunderstorms for Istanbul by Muhammed Başpınar, Veli Yavuz

    Published 2024-01-01
    “…A thunderstorm (TS) is a severe weather phenomenon characterized by intense showers, hail, lightning, thunder, tornadoes, turbulence, and gusty winds. It occurs in vertically developed Cumulonimbus (Cb) clouds due to atmospheric instability and has a spatial resolution (meso-scale) of 1 - 100 km. …”
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  9. 569

    IMF B y influence on fast earthward convection flows in the near-lunar magnetotail by T. C. Liu, T. Pitkänen, S. Nilsson, A. Kullen, J.-S. Park, M. Hamrin, W. S. Shang, H. Z. Wang, S. T. Yao

    Published 2025-02-01
    “…Abstract This study investigates the effects of non-zero IMF B y on the magnetotail B y and fast earthward ion convection (V ⊥ > 200 km/s, "⊥" indicates perpendicular to the magnetic field) in the near-lunar magnetotail plasma sheet using the plasma parameters and magnetic field detected by the ARTEMIS (Acceleration, Reconnection, Turbulence, and Electrodynamics of the Moon’s Interaction with the Sun) P1 satellite during the period 2011–2022. …”
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  10. 570

    Optimization of Wind Turbine Airfoil Using Nondominated Sorting Genetic Algorithm and Pareto Optimal Front by Ziaul Huque, Ghizlane Zemmouri, Donald Harby, Raghava Kommalapati

    Published 2012-01-01
    “…The Lift Coefficient (CL) and Drag Coefficient (CD) data at a range of 0° to 12° angles of attack (α) and at three different Reynolds numbers (Re=68,459, 479, 210, and 958, 422) for all the six airfoils were obtained. Realizable k-ε turbulence model with a second-order upwind solution method was used in the simulations. …”
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  11. 571

    An Analysis of Fuel Oil Sloshing in Partially Filled Cargo Tanker Trucks under Cornering Conditions Using Various Baffle Systems by Woinshet Siraye, Alemayehu Wakjira, Ramesh Babu Nallamothu

    Published 2023-01-01
    “…The computational simulation is carried out as a tank with eight types of baffle systems such as existing baffles (TB), TB with BMLB, UMLB, CLB, 2HLB, 2VHLB, 4HLB, and 4VHLB with similar meshing resolution, similar turbulence modeling, similar boundary conditions, and also similar solution strategies. …”
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  12. 572

    Investigation of Structural Nonlinearity Effects on the Aeroelastic and Wake Characteristics of a 15 MW Wind Turbine by Zhenju Chuang, Lulin Xia, Yan Qu, Wenhua Li, Jiawen Li

    Published 2025-01-01
    “…Additionally, nonlinear deformations weaken the tip vortex strength, slow the momentum exchange in the wake region, reduce turbulence intensity, and delay wake recovery. This study highlights the importance of considering blade nonlinear deformations in large-scale wind turbines.…”
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  13. 573

    Numerical Investigation of the Coupling Effects of Pulsed H<sub>2</sub> Jets and Nanosecond-Pulsed Actuation in Supersonic Crossflow by Keyu Li, Jiangfeng Wang

    Published 2025-01-01
    “…The FVM was employed to solve the multi-component 2D URANS equations with the SST k-omega turbulence model, while H<sub>2</sub>-air combustion was described using a seven species–seven reactions chain reaction model, and the plasma thermal effect was represented by a phenomenological model. …”
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  14. 574

    Evaluating the Combined Effects of Transverse Pitch Ratio and Flow Arrangement on the Thermo-Hydraulic Performance of a Novel Inclined Delta Winglet by Hüseyin Zahit Demirağ

    Published 2024-12-01
    “… In this work, the in-depth examinations of the Novel Inclined Delta Winglet (NIDW) in terms of heat transfer performance and the flow characteristics are conducted at Re=5000-17500, utilizing (SST) k-ω turbulence model. In accordance with the objective of this investigation, the combined effects of the positioning of the NIDW in common-flow-down (NIDW-CFlowD) and common-flow-up (NIDW-CFlowU) orientations together with two transverse pitch ratios [Pt=0.333 and 0.166] are investigated and the resulting data are presented in a comparative manner. …”
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  15. 575

    Optimizing photocatalytic degradation of methyl violet dye in a recirculating slurry-type reactor by F. Shokry, M. El-Gedawy, S.A. Nosier, M.H. Abdel-Aziz

    Published 2025-01-01
    “…Higher solution flow rates improved mass transfer by increasing turbulence, leading to enhanced degradation efficiency. …”
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    Article
  16. 576

    Impact of Outlet Pressure on Internal Flow Characteristics and Energy Loss in Pump-Turbine System Under Pump Operation Conditions by Tianding Han, Qifei Li, Licheng Feng, Xiangyu Chen, Feng Zhou, Zhenggui Li

    Published 2024-12-01
    “…During pump operation, the pump-turbine system experiences unstable fluctuations in outlet pressure, which induces turbulence and additional energy losses. Understanding the impact of outlet pressure variations on the internal flow field is crucial for the further development of turbine units. …”
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    Article
  17. 577

    Modelling and Analysis of Autonomous Airport Surface Movement Operations based on Multi-Agent Planning by Malte von der Burg, Alexei Sharpanskykh

    Published 2025-01-01
    “…The model incorporates the decisive processes and elements of airport surface movement operations such as pushback, engine-start, inbound and outbound holding, compliance to CTOT-slots, and wake turbulence separation for takeoffs. To compute conflict-free trajectories for all taxiing agents, we tailored and extended state-of-the-art multi-agent motion planning algorithms: the two-level routing algorithm combines Priority-Based Search (PBS) with Safe Interval Path Planning (SIPP). …”
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  18. 578

    Microscopic Effect of Mixed Wetting Capillary Characteristics on Spontaneous Imbibition Oil Recovery in Tight Reservoirs by Yu Pu, Erlong Yang, Di Wang

    Published 2025-01-01
    “…., <i>θ</i><sub>w</sub> = 75° and <i>θ</i><sub>o</sub> = 165°), local spontaneous imbibition turbulence can only detach very little oil at the inlet of the water wetting area, ultimately achieving a recovery efficiency of less than 10%. …”
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    Article
  19. 579

    Numerical Study on the Drag Reduction for a D-Shaped Bluff Body with Wavy Trailing Edge Structures by H. Yang, D. Luo, T. Wang

    Published 2025-01-01
    “…The intricate and complex flow structures of three-dimensional unsteady incompressible turbulence surrounding bluff bodies have garnered considerable attention from numerous researchers. …”
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    Article
  20. 580

    LPV Control for the Full Region Operation of a Wind Turbine Integrated with Synchronous Generator by Guoyan Cao, Karolos M. Grigoriadis, Yaw D. Nyanteh

    Published 2015-01-01
    “…The LPV model is derived from the wind turbine state space models extracted by FAST (fatigue, aerodynamics, structural, and turbulence) code linearization at different operating points. …”
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