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61
Numerical study of trapped vortex combustors characteristics in small ramjets
Published 2016“…The results show that the Coriolis effects dominate the flow in the cavity when it is subject to a high spinning motion. Multiple secondary vortices and strong three-dimensional flows are observed in the cavity, so that the mixing is improved and a hotter cavity flame is generated. …”
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Thesis -
62
Aerodynamic Effects of High-Speed Train Positions During Tunnel Exit Under Crosswind Conditions Using Computational Fluid Dynamics
Published 2024“…Meanwhile, the flow structure revealed that the leading coach of the train experienced intricate flow patterns during crosswinds, characterized by vortices and flow separation. These findings indicate that aerodynamic instabilities can potentially affect the overall performance of the train. …”
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Article -
63
Engineered cylindrical NiFe magnetic nanoparticles for cancer cell death
Published 2019“…Micromagnetic simulations revealed that the magnetization reversal occurs via the nucleation of the triple vortex state and abrupt splitting of the clockwise and anticlockwise vortices. The application of different magnetic field configurations to control the MNPs can manipulate the pathways leading to cell death, playing a pivotal role in cancer treatment. …”
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Thesis -
64
Numerical investigation of aeroacoustics damping performance of a Helmholtz resonator : effects of geometry, grazing and bias flow
Published 2021“…Parallel or counter injection of the bias flow is showed to be associated with improved TL performance, since there are counter-rotating vortices produced in the cavity. Finally, increasing the Mach number of the grazing flow leads to the noise damping effectiveness being deteriorated in general, even in the presence of a bias flow. …”
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Journal Article -
65
Engineering quantum control with optical transitions induced by twisted light fields
Published 2024“…Engineering light-matter interaction by optical vortices merged with composite pulses will ultimately benefit experimental atomic and molecular platforms targeting an optimal coherent control of quantum states, reliant quantum simulation, novel approaches to atomic interferometry, and precision tests of fundamental theories in physics and high-accuracy optical metrology.…”
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Journal Article -
66
Spatiotemporal signatures of elastoinertial turbulence in viscoelastic planar jets
Published 2024“…The autocovariance of the schlieren images in the fully turbulent region of the jets shows coherent structures that are elongated in the streamwise direction, consistent with the suppression of streamwise vortices by elastic stresses. These coherent structures give a higher spectral energy to small frequency modes in EIT characterized by LDV measurements of the velocity fluctuations at the jet centerline. …”
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67
Active control of wakes and vortex-induced vibration of a circular cylinder at Re = 100
Published 2016“…First, the capability of a pair of in-phase SJs in suppressing the shedding of asymmetric vortices is studied systematically at different momentum coefficients, frequencies, and actuating locations, where the SJ excitation frequency of interest is roughly above five times the natural vortex shedding frequency and the lock-on phenomenon does not occur. …”
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Thesis -
68
Convective heat transfer performance of airfoil heat sinks fabricated by selective laser melting
Published 2017“…In addition, the increase in α further improves the heat transfer performance of the NACA 0024 heat sinks through the formation of vortices which enhanced fluid mixing. Finally, based on the above mechanisms proposed, a semi-analytical model was developed to characterize the heat transfer performances of the NACA 0024 heat sinks for the range of α and Re tested. …”
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Journal Article -
69
Development of schlieren-image based flow diagnostics and analysis for supersonic jet flows
Published 2020“…When compared against PIV results, the much higher spatial and temporal resolution of SIVOF resulted in sharper and clearer vortical structures that can be tracked across several time-resolved frames. …”
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Thesis-Doctor of Philosophy