Search Results - "Lee, Jeekeun"

Mean and turbulent flow characteristics of downwash air flow generated by a single rotor blade in agricultural drones by Shouji, Cheng, Alidoost Dafsari, Reza, Yu, Seung-Hwa, Choi, Yong, Lee, Jeekeun

“…Recently, agricultural drones have been widely used for precise agricultural control. In the case of drone control, improved coverage and reduced drift…”
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Mixing Properties of Emulsified Fuel Oil from Mixing Marine Bunker-C Fuel Oil and Water by Lee, Taeho, Cho, Jinho, Lee, Jeekeun

“…Alternative marine fuels are needed to help reduce the exhaust emissions of ships. In this study, we performed an analysis to verify the potential…”
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Numerical Simulations on the Performance of Two-Dimensional Serpentine Nozzle: Effect of Cone Mixer Angle and Aft-Deck by Ahmed, Hamada Mohmed Abdelmotalib, Ahn, Byung-Guk, Lee, Jeekeun

“…The current study addresses the effect of different designs of the exhaust mixer and aft-deck on the performance of a two-dimensional convergent nozzle…”
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Experimental Investigation on Liquid Breakup and Injection Characteristics of a Rotary Slinger Atomizer by Shim, Hyeon-Seok, Kim, Shaun, Kim, Jupyoung, Kim, Donghyun, Ryu, Gyoungwon, Lee, Jeekeun

“…An experimental study was conducted to investigate the liquid breakup characteristics of rotary slinger atomizers. The experimental test rig equipped with a…”
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Sensitivity analysis of the vane length and passage width for a radial type swirler employed in a triple swirler configuration by Vashahi, Foad, Rezaei, Shahnaz, Dafsari, Reza Alidoost, Lee, Jeekeun

“…•Computational fluid dynamic (CFD) investigation on the in uence of the radial vane length and passage width on the swirling flow field of a triple…”
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A study on the exit flow characteristics determined by the orifice configuration of multi-perforated tubes by Lee, Sangkyoo, Moon, Namsoo, Lee, Jeekeun

“…A multi-perforated tube indicates the existence of multiple holes in various shapes on the surface of long cylinder-type or rectangular tubes, and the hole…”
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On the emerging flow from a dual-axial counter-rotating swirler; LES simulation and spectral transition by Vashahi, Foad, Lee, Jeekeun

“…•Efficient local grid refinement method for LES-WALE simulation of a dual counter rotating swirler.•Characterizing the mean flow field based on the flow swirl…”
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Experimental and numerical studies of the effects of the contraction ratios on the swirling flow characteristics of the model combustor outlet in lean gas turbines by Hashim, Mohamed Y., Bae, Jonggeun, Lee, Jeekeun

“…•Large eddy simulation was performed of a lean partially premixed combustor model.•Vortex breakdown phenomenon was studied with various contraction ratios…”
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On the correlation of the primary breakup length with fuel temperature in pressure swirl nozzle by Rezaei, Shahnaz, Vashahi, Foad, Ryu, Gyongwon, Lee, Jeekeun

“…This work is focused on the effect of viscosity on the estimation of liquid sheet thickness and breakup length of a pressure swirl nozzle that is undergoing…”
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Analysis of the local equivalence ratio under fuel-feeding excitations in a lean gas turbine model combustor: Large eddy simulation approach by Hashim, Mohamed Y., Charanandeh, Ali, Kasbi, Milad Khaleghi, Lee, Jeekeun

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Effect of the physical properties of liquid and ALR on the spray characteristics of a pre-filming airblast nozzle by Tareq, Mir Muhammad, Dafsari, Reza Alidoost, Jung, Seungchae, Lee, Jeekeun

“…•Air blast nozzle geometry affects the spray characteristics.•Fuel properties impacts the internal nozzle flow and spray structure.•Air to liquid ratio affects…”
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An experimental study on the low-temperature spray characteristics of aviation Jet A-1 fuel with rotational speeds in a slinger-type atomizer by Seo, Yechan, Ryu, Gyongwon, Shim, Hyeonseok, Lee, Jeekeun

“…•The spray characteristics and droplet distribution of a slinger nozzle were experimentally studied by supplying water and Jet A-1 to understand the slinger…”
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Viscosity effect on the pressure swirl atomization of an alternative aviation fuel by Dafsari, Reza Alidoost, Lee, Hyung Ju, Han, Jeongsik, Park, Dong-Chang, Lee, Jeekeun

“…Atomization characteristics with viscosity have motivated a number of works to investigate the flow behavior with temperature variation. An experimental study…”
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Effect of fuel-feeding excitation on the isothermal turbulent swirling flow structure in a lean gas turbine model combustor by Hashim, Mohamed Y., Bae, Jonggeun, Dafsari, Reza Alidoost, Lee, Jeekeun

“…Fuel-feeding excitation (ff) is an important factor in lean combustors because it controls the combustion process and maintains a stable mixing process. In…”
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Evaluation of the atomization characteristics of aviation fuels with different viscosities using a pressure swirl atomizer by Dafsari, Reza Alidoost, Lee, Hyung Ju, Han, Jeongsik, Lee, Jeekeun

“…•Spray characteristics of four aviation fuels were compared.•A higher viscosity diminishes the centrifugal force and increases the hydraulic resistance.•Both…”
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Drift potential and coverage ratio analysis of an air induction nozzle under an agricultural drone with various operating condition; an indoor test by Alidoost Dafsari, Reza, Yu, Sanghyeon, Yu, Seunghwa, Choi, Yong, Lee, Jeekeun

“…•UAV Downwash flow impacts the spray structure and droplet deposition uniformity.•Drone flight altitude defines the downwash flow impact on canopy and drift…”
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Effect of geometrical parameters of air-induction nozzles on droplet characteristics and behaviour by Alidoost Dafsari, Reza, Yu, SeungHwa, Choi, Yong, Lee, Jeekeun

“…Delivering pesticide droplets accurately to a target has always been a challenge for crop spraying. Pesticide spray that drifts or runs-off the crop are major…”
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Characteristics of a tip-vortex generated by a single rotor used in agricultural spraying drone by Ansaripour, Mehrzad, Dafsari, Reza Alidoost, Yu, Seung-Hwa, Choi, Yong, Lee, Jeekeun

“…•At various wake ages, tip vortices swirl velocity and circulation profile reveal self-similar structures.•Outside of the vortex core, the flow is turbulent…”
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A computational study of two-dimensional serpentine nozzle performance with different annular mixer configurations by Mohmed Abdelmotalib, Hamada, Lee, Changwook, Seo, Yechan, Lee, Jeekeun

“…•The performance of serpentine was studied with different mixer configurations.•The performance was investigated based on the internal flow and the exhausted…”
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Computational study of internal flow characteristics of the air induction nozzle by Abdelmotalib, Hamada Mohmed, Dafsari, Reza Alidoost, Seung-Hwa, Yu, Lee, Jeekeun

“…•The internal flow of the air induction nozzle was studied.•The effect of internal flow characteristics on the air-liquid ratio was investigated.•The…”
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