Showing 1 - 20 results of 25 for search 'boundary-layer transition low', query time: 0.13s Refine Results
  1. 1

    Numerical Investigation of Transitional Oscillatory Boundary Layers: Turbulence Quantities by Selman Baysal, V. S. Ozgur Kirca

    Published 2025-05-01
    “…This study investigates the organized flow structures and turbulence quantities in a transitional oscillatory boundary-layer flow over a smooth bed using a DNS model set up by the open-source framework Nektar++ (v5.2.0). …”
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    Effect of Mach Number on Stability of Boundary Layer Over a Rotating Cone in Hypersonic Flow by Yiyang GU, Hao DONG, Shicheng LIU, Yinglei JIANG

    Published 2025-05-01
    “…Modified Mack mode, cross-flow mode and centrifugal mode shift towards low frequency, low streamwise and circumferential wavenumbers. …”
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  3. 3

    Numerical Study of the Boundary Layer Separation of a Low-Pressure Turbine Cascade at Different Incidence Angles by Tianwei Bao, Zhengyang He, Jiale Du, Chengyan Wang, Le Fang, Song Chen

    Published 2024-01-01
    “…Modern low-pressure turbine (LPT) pursues high blade loading to improve its efficiency while the possibility of boundary layer separation on the blades is still a challenging problem. …”
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  4. 4

    Connecting a Magnetized Disk to a Convective Low-mass Protostar: A Global 3D Model of Boundary Layer Accretion by Shinsuke Takasao, Takashi Hosokawa, Kengo Tomida, Kazunari Iwasaki

    Published 2025-01-01
    “…To investigate the mechanisms of mass and angular momentum transfer, we develop a global, 3D magnetohydrodynamic model of boundary layer accretion around a magnetized, convective low-mass protostar. …”
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    Atmospheric Boundary Layer Stability in Urban Beijing: Insights from Meteorological Tower and Doppler Wind Lidar by Linlin Wang, Bingcheng Wan, Yuanjian Yang, Sihui Fan, Yi Jing, Xueling Cheng, Zhiqiu Gao, Shiguang Miao, Han Zou

    Published 2024-11-01
    “…Strong stable regimes are more frequently observed during winter and autumn, peaking during transitions from night to day. Furthermore, both strong unstable and strong stable regimes occur under very weak wind conditions (indicating weak dynamic instability), with strong instability associated with high net radiation levels while strong stability correlates with low net radiation conditions (indicative of robust thermal stability). …”
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  7. 7

    A CFD-Compatible Amplification Factor Transport Equation for Oblique Tollmien-Schlichting Waves in Supersonic Boundary Layers by JiaKuan Xu, Lei Qiao, Junqiang Bai

    Published 2020-01-01
    “…Boundary layer transition is a hot research topic in fluid mechanics and aerospace engineering. …”
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    Numerical Prediction of the Tonal Airborne Noise for a NACA 0012 Aerofoil at Moderate Reynolds Number Using a Transitional URANS Approach by Michele DE GENNARO, Helmut KÜHNELT, Alessandro ZANON

    Published 2017-11-01
    “…This paper aims at presenting the results of numerical experiments for evaluating the capability of capturing the tonal airborne noise by using an advanced, yet low computationally demanding, unsteady Reynolds-averaged Navier-Stokes (URANS) turbulence model augmented with a transitional model to account for the laminar to turbulent transition. …”
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  10. 10

    Friction and wear characteristics of acidic phosphate ester boundary layers analyzed by near-edge X-ray absorption fine structure by Naoko Takechi-Takahashi, Kensuke Matsushima, Noritake Isomura, Satoru Kosaka, Toshihide Ohmori, Toshinari Sano, Satoru Maegawa, Fumihiro Itoigawa

    Published 2025-06-01
    “…During friction at extremely low surface pressures, oleyl acid phosphate (OLAP) has an interesting phenomenon: The friction coefficient has a positive gradient in the velocity range of boundary lubrication to mixed lubrication transitions, and the friction coefficient decreases as the running-in time increases. …”
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  11. 11

    Wind, Water Level, and Fluid Mud Thresholds in Lake Apopka, Florida by Earl J. Hayter, Ashish J. Mehta, John M. Jaeger, Arnoldo Valle-Levinson, Andrew J. Manning, Carola Forlini

    Published 2024-12-01
    “…Predictive modeling suggests that in 2 m water depth the required wind would be about 14 m s<sup>−1</sup> with a low probability of 2%. Moreover, a transition occurs from wave-dominant resuspension at low depths to current-dominance in deeper water, which likely influences BBL dynamics with potential effects on the benthic biota. …”
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  12. 12

    Fast Transitions of X-Ray Variability in the Neutron Star Low-mass X-Ray Binary Cygnus X-2 by Liang Zhang, Mariano Méndez, Hua Feng, Diego Altamirano, Zi-xu Yang, Qing-chang Zhao, Shuang-Nan Zhang, Lian Tao, Yue Huang, Xiang Ma, Shu-mei Jia, Ming-yu Ge, Li-Ming Song, Jin-Lu Qu, Shu Zhang

    Published 2025-01-01
    “…We present a spectral-timing analysis of two NICER observations of the weakly magnetized neutron star low-mass X-ray binary Cygnus X-2. During these observations, we detect a rapid transition from a narrow 50 Hz horizontal-branch oscillation (HBO) to a broad 5 Hz normal-branch oscillation (NBO), accompanied by an increase in source flux and a decrease in spectral hardness. …”
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  13. 13

    Turbulence kinetic energy dissipation rate estimated from a WindCube Doppler lidar and the LQ7 1.3&thinsp;GHz radar wind profiler in the convective boundary layer by H. Luce, M. Yabuki

    Published 2025-03-01
    “…We have also studied in detail the case of a shallow (<span class="inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" id="M26" display="inline" overflow="scroll" dspmath="mathml"><mrow><mi>D</mi><mo>&lt;</mo><mo>∼</mo><mn mathvariant="normal">0.6</mn></mrow></math><span><svg:svg xmlns:svg="http://www.w3.org/2000/svg" width="46pt" height="10pt" class="svg-formula" dspmath="mathimg" md5hash="d0123f3adf61ea73127a90c2450ae182"><svg:image xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="amt-18-1193-2025-ie00012.svg" width="46pt" height="10pt" src="amt-18-1193-2025-ie00012.png"/></svg:svg></span></span> km) convective boundary layer that developed under low atmospheric pressure and cloudy conditions. …”
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  14. 14

    Direct Numerical Simulation of Flow and Heat Transfer in a Compressor Blade Passage Across a Range of Reynolds Numbers by Yang Liu, Chenchen Zhao, Lei Zhou, Duo Wang, Hongyi Xu

    Published 2025-06-01
    “…A recent method based on local inviscid velocity reconstruction is applied to define and calculate boundary layer parameters, whereas the Rortex vortex identification method is used to analyze turbulent vortical structures. …”
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    PSE-Based Aerodynamic Flow Transition Prediction Using Automated Unstructured CFD Integration by Nathaniel Hildebrand, Meelan M. Choudhari, Fei Li, Pedro Paredes, Balaji S. Venkatachari

    Published 2025-03-01
    “…We present a coupled high-fidelity iterative approach that leverages the FUN3D flow solver and the LASTRAC stability code to predict transition in low-disturbance environments, initiated by the linear growth of boundary-layer instability modes. …”
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    Turbulent Kinetic Energy Production in the Vane of a Low-Pressure Linear Turbine Cascade with Incoming Wakes by V. Michelassi, J. G. Wissink

    Published 2015-01-01
    “…Incompressible large eddy simulation and direct numerical simulation of a low-pressure turbine at Re=5.18×104 and 1.48×105 with discrete incoming wakes are analyzed to identify the turbulent kinetic energy generation mechanism outside of the blade boundary layer. …”
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    Numerical Simulation of Airfoil Aerodynamic Penalties and Mechanisms in Heavy Rain by Zhenlong Wu, Yihua Cao, M. Ismail

    Published 2013-01-01
    “…One is to cause premature boundary-layer transition at low AOA and separation at high AOA. …”
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    Impact of Negative Geostrophic Wind Shear on Wind Farm Performance by Anja Stieren, Jens H. Kasper, Srinidhi N. Gadde, Richard J.A.M. Stevens

    Published 2022-09-01
    “…Baroclinicity, which leads to height-dependent driving pressure gradients, occurs in various situations such as the flow transition between land and sea, and sloping terrain. …”
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    Tipping to an Aggregated State by Mesoscale Convective Systems by I. L. Kruse, R. Fiévet, J. O. Haerter

    Published 2025-03-01
    “…Abstract Radiative‐convective equilibrium simulations were suggested to resist self‐aggregation within a linearly stable regime at low surface temperatures. Recent numerical work shows that this linearly stable regime can rapidly transition to an aggregated state when exposed to realistic diurnal surface temperature variations. …”
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