Showing 461 - 480 results of 696 for search '"turbulence"', query time: 0.06s Refine Results
  1. 461

    Simulation of Impinging Cooling Performance with Pin Fins and Mist Cooling Adopted in a Simplified Gas Turbine Transition Piece by Tao Xu, Hang Xiu, Junlou Li, Haichao Ge, Qing Shao, Guang Yang, Zhenglei Yu

    Published 2014-01-01
    “…Heat transfer augmentation in the coolant chamber was achieved through the use of pin fin structure and mist cooling, which could increase the turbulence and heat transfer efficiency. The present research is focused on heat transfer and pressure characteristics of the impinging cooling in the coolant chamber using FLUENT software. …”
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  2. 462

    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
    “…The present work is dedicated to the study of multiphase turbulent and three-dimensional rotational flow in dust cyclones, a contribution to air pollution control. …”
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  3. 463

    On the Formation of Planets in the Milky Way’s Thick Disk by Tim Hallatt, Eve J. Lee

    Published 2025-01-01
    “…One key difference between the two stellar populations is the time at which they emerged: thick-disk stars are the likely product of cosmic noon (redshift z ∼ 2), an era characterized by high star formation rate, massive and dense molecular clouds, and strong supersonic turbulence. Solving for the background radiation field in these early star-forming regions, we demonstrate that protoplanetary disks at cosmic noon experienced radiation fields up to ∼7 orders of magnitude more intense than in solar neighborhood conditions. …”
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  4. 464

    Wavefront Correction for Extended Sources Imaging Based on a 97-Element MEMS Deformable Mirror by Huizhen Yang, Lingzhe Tang, Zhaojun Yan, Peng Chen, Wenjie Yang, Xianshuo Li, Yongqi Ge

    Published 2024-12-01
    “…In this study, our focus is on analyzing the ability of a 97-element MEMS (Micro-Electro-Mechanical System) DM to correct blurred images of extended sources affected by atmospheric turbulence. The RUN optimizer is employed as the control method to evaluate the correction capability of the DM through simulations and physical experiments. …”
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  5. 465

    Structure Functions of Rotation Measures Revealing the Origin of Fast Radio Bursts by Rui-Nan Li, Zhen-Yin Zhao, Qin Wu, Shuang-Xi Yi, Fa-Yin Wang

    Published 2025-01-01
    “…Structure function (SF) analysis is a powerful tool for studying plasma turbulence. Theoretically, the SF of Faraday rotation measure (RM) is expected to include a geometric component due to the relative orientation of sight lines through an ordered magnetic field. …”
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  6. 466

    Theoretical and Experimental Evaluation of a Compact Aerosol Wind Tunnel and its Application for Performance Investigation of Particulate Matter Instruments by Prashant Patel, Shankar G. Aggarwal

    Published 2021-03-01
    “…The air velocity and turbulence profiles were uniform, displaying ≤ 10% variation in the section we tested. …”
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  7. 467

    Influence of Channel Regulating Structures on the Transportation and Dissipation of Supersaturated Total Dissolved Gas by Yun Qing, Qian Ma, Ran Li, Xia Shen, XuJin Zhang, LinFeng Han

    Published 2021-01-01
    “…It would significantly change the turbulence intensity and hydropressure of the flow, which dominates the dissipation of TDG. …”
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  8. 468

    Study on the Influence of Bionic Structure on the Sealing Performance of Centrifugal Pump Sealing Ring by Ye Cai, Zhengpu Xie, Feixiang Yang, Muhan Yan, Chengqi Mou, Zhangcheng Huang, Yuxin Jin, Jiegang Mou, Yunqing Gu

    Published 2025-01-01
    “…In order to improve the sealing performance of a sealing ring in order to improve the efficiency of the centrifugal pump, based on the bionics principle, a calculation model for the bionic groove surface sealing ring structure of the centrifugal pump is established, based on the Realizable <i>k</i>-<i>ε</i> turbulence model. The external characteristics, internal flow field distribution and leakage characteristics of centrifugal pumps with different bionic groove surface structures and groove diameters are analyzed, and the influence of bionic surface structure on the sealing performance of the centrifugal pump sealing ring is studied. …”
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  9. 469

    Perfection of the mechanism of planning of innovative activities based on the system-transdisciplinary approach by P. M. Gureev, V. N. Grishin, E. N. Dunenkova, S. I. Onishchenko

    Published 2020-04-01
    “…The use of a transdisciplinary systematic approach to innovation planning allows you to use new methodological planning tools, strengthen the systematic nature of planned activities, more clearly define their content and sequence.Various variants of the classification of scientific approaches according to the criterion of the degree of completeness of cognition of the surrounding world have been analysed, the basic transdisciplinary methodological approaches according to the content criteria and possibilities have been compared, such as: the theory of autopoiesis, the theory of chaos and complexity, the theory of fractals, the theory of turbulence and the theory of economic genetics.An important factor in the proposed methodology is the use of the evolutionary property of the development of organizational systems in combination with the possibility of revolutionary transformations at certain stages of development that determine the susceptibility of the organizational system to innovations. …”
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  10. 470

    Enhancement of Aeroengine Combustion Chamber Air Cooling Holes Design for Emission Reduction and Pattern Factor Control by Masoud Hajivand

    Published 2024-12-01
    “…Both thermal and prompt formation mechanisms of NOx were considered, while k-ε model for turbulence was adapted to capture the nature of emission. …”
    Article
  11. 471

    Catastrophic and violent tornadoes: a detailed review of physical-mathematical models by Sergey A. Arsen’yev, Lev V. Eppelbaum

    Published 2024-11-01
    “…In this case, the theory of mesoscale turbulence is used, which allows for the phenomenon of the red turbulent cascade: the energy transfer from smaller turbulent eddies to the region of large scales. …”
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  12. 472

    Feasibility and parameter optimization of ground-to-satellite uplink continuous-variable quantum key distribution by Jin Cheng, Yujie Chen, Ao Liu, Xin Sun, Junjie Guo, Bohan Yang, Peng Yin, Wenbo Liu, Lanjian Chen, Chen Dong

    Published 2025-01-01
    “…In this study, the feasibility of the uplink CV-QKD for Very Low Earth Orbit satellite is studied, and the influence of practical factors such as atmospheric turbulence and beam pointing errors under dynamic time-varying satellite orbital parameters is analyzed to model realistic transmission channels. …”
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  13. 473

    Optimization of a Continuous Hybrid Impeller Mixer via Computational Fluid Dynamics by N. Othman, S. K. Kamarudin, M. S. Takriff, M. I. Rosli, E. M. F. Engku Chik, M. A. K. Meor Adnan

    Published 2014-01-01
    “…The determination of RTD using a k-ε turbulence model was performed using CFD techniques. …”
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  14. 474

    A Physically Based Spatial Expansion Algorithm for Surface Air Temperature and Humidity by Hongbo Su, Jing Tian, Renhua Zhang, Shaohui Chen, Yongmin Yang, Yuan Rong, Sujuan Mi, Jianwei Qi

    Published 2013-01-01
    “…An algorithm was developed to expand the surface air temperature and air humidity to a larger spatial domain, based on the fact that the variation of surface air temperature and air humidity is controlled jointly by the local turbulence and the horizontal advection. This study proposed an algorithm which considers the advective driving force outside the thermal balance system and the turbulent driving force and radiant driving force inside the thermal balance system. …”
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  15. 475

    Angular Power Spectrum of TeV–PeV Cosmic-Ray Anisotropies by Wenyi Bian, Gwenael Giacinti, Brian Reville

    Published 2025-01-01
    “…Simulations of the cosmic-ray (CR) anisotropy down to TeV energies are presented, using turbulence parameters consistent with those inferred from observations of the interstellar medium. …”
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  16. 476

    Global Ionospheric Scintillation Estimation Based on Phase Screen Modeling From One‐Dimensional Satellite Data by Yuhao Zheng, Chao Xiong, Luca Spogli, Rayan Iman, Lucilla Alfonsi

    Published 2025-01-01
    “…Based on the single phase screen assumption, this study uses the one‐dimensional (1D) in‐situ plasma density data of ESA's Swarm constellation data to develop a three‐dimensional (3D) power spectrum of electron density perturbation and construct a model to estimate scintillations caused by small‐scale ionospheric plasma density irregularities. By deriving the turbulence strength (Cs) and calculating the amplitude scintillation index S4, the global distribution of ionospheric scintillation is derived. …”
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  17. 477

    Influence of Surface Roughness on a Highly Loaded Axial Compressor Stage Performance at Low Reynolds Number by Hongzhi Cheng, Mingyang Wang, Chuangxin Zhou, Shengfeng Zhao, Xingen Lu, Junqiang Zhu

    Published 2021-01-01
    “…The results showed that at low Re, surface roughness mainly improved the stage performance by reducing the length and width of the LSB as well as the rotor tip vorticity, delaying the occurrence of three-dimensional flow separation and increasing the turbulence level near the wall. However, it also aggravated the incoordination between the subsequent stages to a certain extent, which limited further improvement of the overall aerodynamic performance. …”
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  18. 478

    The analysis of structural changes in the Lithuanian economic sectors under conditions of uncertainty by Artūras Vitas

    Published 2023-12-01
    “…The analysis of the period 1995-2022 reveals that the Lithuanian economy was constantly affected by short-term external turbulence but remained resistant to serious shocks. …”
    Article
  19. 479

    The research into the propagation law of the shock wave of a gas explosion inside a building by Shu-Chao Lin, You-Chun Xu, Pei-Dong Yang, Shan Gao, Yi-Jun Zhou, Jin Xu

    Published 2021-01-01
    “…Based on the dissipation rate conservation equations of turbulent kinetic energy in the k-ε turbulence model, a complicated three-dimensional finite element model of a kitchen filled with gas mixture is developed by using the open source field operation and manipulation (OpenFOAM). …”
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  20. 480

    Application of the Flux-Variance Technique for Evapotranspiration Estimates in Three Types of Agricultural Structures by Ori Ahiman, Yonatan Mekhmandarov, Moran Pirkner, Josef Tanny

    Published 2018-01-01
    “…Quality control analysis of the EC data showed that turbulence development and flow stationarity conditions in the three structures were suitable for flux measurements. …”
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