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Leidenfrost drops on micro/nanostructured surfaces

Vishal TALARI, Prakhar BEHAR, Yi LU, Evan HARYADI, Dong LIU

Frontiers in Energy 2018, Volume 12, Issue 1,   Pages 22-42 doi: 10.1007/s11708-018-0541-7

Abstract: In the Leidenfrost state, the liquid drop is levitated above a hot solid surface by a vapor layer generatedvia evaporation from the drop.The vapor layer thermally insulates the drop from the heating surface, causing deteriorated heat transferThus, it is highly desirable to suppress the Leidenfrost effect and elevate the Leidenfrost temperatureThe basic physical processes of the Leidenfrost effect and the key characteristics of the Leidenfrost

Keywords： Leidenfrost drop     Leidenfrost temperature     heat transfer enhancement     micro/nanostructured surfaces    

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CFD evaluation of pressure drop across a 3-D filter housing for industrial gas turbine plants

Fidelis I. ABAM,Samuel O. EFFIOM,Olayinka S. OHUNAKIN

Frontiers in Energy 2016, Volume 10, Issue 2,   Pages 192-202 doi: 10.1007/s11708-016-0406-x

Abstract: This paper investigated the flow distribution and total pressure drop across a designed 3-D filter housingThe results obtained indicated an acceptable total pressure drop of 7.2% for the entire filter housing

Keywords： computational fluid dynamics (CFD)     pressure drop     flow distribution     filter housing     gas turbine    

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A biofilter model for simultaneous simulation of toluene removal and bed pressure drop under varied inlet

Jinying XI,Insun KANG,Hongying HU,Xian ZHANG

Frontiers of Environmental Science & Engineering 2015, Volume 9, Issue 3,   Pages 554-562 doi: 10.1007/s11783-014-0671-z

Abstract: developed to simultaneously predict the Volatile Organic Compounds (VOCs) removal and filter bed pressure dropspecific surface area of the filter bed and the thickness of water layer, while the filter bed pressure dropThe calculated toluene removal efficiency and bed pressure drop satisfactorily fit the experimental dataloadings, which indicates the model in this study can be used to predict VOCs removal and bed pressure drop

Keywords： Volatile Organic Compounds (VOCs)     biofilters     modelling     biomass accumulation     pressure drop    

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Ultrasound-assisted emulsification solidified floating organic drop microextraction for the determination

Qingyun CHANG, Jingwen ZHANG, Xin DU, Jingjun MA, Jingci LI,

Frontiers of Environmental Science & Engineering 2010, Volume 4, Issue 2,   Pages 187-195 doi: 10.1007/s11783-010-0030-7

Abstract: (LPME) technique was developed using ultrasound-assisted emulsification solidified floating organic drop

Keywords： ultrasound-assisted emulsification     solidified floating organic drop microextraction     flame atomic absorption    

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Hybrid intelligent water drop bundled wavelet neural network to solve the islanding detection by inverter-based

Mehrdad TARAFDAR HAGH,Homayoun EBRAHIMIAN,Noradin GHADIMI

Frontiers in Energy 2015, Volume 9, Issue 1,   Pages 75-90 doi: 10.1007/s11708-014-0337-3

Abstract: The weight parameters of the neural network were optimized by intelligent water drop (IWD) to improve

Keywords： islanding detection     neuro-wavelet     intelligent water drop (IWD)     non-detection zone (NDZ)     distributed generation    

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The investigation of pressure drop in moving-beds

CHEN Yunhua, ZHU Xuedong, WU Yongqiang, ZHU Zibin

Frontiers of Chemical Science and Engineering 2007, Volume 1, Issue 2,   Pages 184-189 doi: 10.1007/s11705-007-0034-4

Abstract: The pressure drop of a cross-flow moving-bed was investigated in a two-dimensional rectangular apparatusvelocity, the formation and development of cavity/raceway and voidage of particles on the pressure dropThe experimental results show that the particle velocity has little influence on the pressure drop, whileThe development of a cavity or a raceway can result in three types of variations of pressure drop withOn the basis of experimental results, a model for calculating the pressure drop after a cavity occurs

Keywords： development     cross-flow velocity     superficial     qualitative account     stabilization    

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Research progress in robust design of products, drop impact strength

Yang Shuyi,Liu Deshun,Zhao Jiyun,Wen Zejun

Strategic Study of CAE 2010, Volume 12, Issue 1,   Pages 61-66

Abstract:

Drop impact is an phenomena that object movement state arises sharp change

Keywords： drop impact     crashworthiness     robust design    

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Pressure drop analysis on the positive half-cell of a cerium redox flow battery using computational fluid

Fernando F. Rivera, Berenice Miranda-Alcántara, Germán Orozco, Carlos Ponce de León, Luis F. Arenas

Frontiers of Chemical Science and Engineering 2021, Volume 15, Issue 2,   Pages 399-409 doi: 10.1007/s11705-020-1934-9

Abstract: Calculated pressure drop was validated against experimental data obtained with typical cerium electrolytesIt was found that the pressure drop values were better described by the RANS approach, whereas the validity

Keywords： CFD simulation     porous media     porous electrode     pressure drop     redox flow battery    

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Pressure Drop Characteristics of Flow Boiling in Microchannel With Low Aspect Ratio

Zhang Binglei,Xu Jinliang and Xiao Zejun

Strategic Study of CAE 2007, Volume 9, Issue 12,   Pages 86-93

Abstract: The comparison indicates that the homogeneous flow model cannot predict the twophase pressure drop welland Lee,Mishima,Qu and Mudawar , separated flow model also failed to predict the twophase pressure dropwhich decreased with the decreasing mass flux .A new correlation to predict the twophase flow pressure dropincludes the effect of the hydraulic diameter and the effect of mass flux on the twophase flow pressure drop

Keywords： pressure drop characteristics；homogeneous flow model；separated flow model；microchannel；flow boiling    

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Heat transfer and fluid flow analysis of an artificially roughened solar air heater: a CFD based investigation

Anil Singh YADAV,J. L. BHAGORIA

Frontiers in Energy 2014, Volume 8, Issue 2,   Pages 201-211 doi: 10.1007/s11708-014-0297-7

Abstract: In this paper, the effect of rib (circular sectioned) spacing on average Nusselt number and friction factor in an artificially roughened solar air heater (duct aspect ratio, AR= 5:1) is studied by adopting the computational fluid dynamics (CFD) approach. Numerical solutions are obtained using commercial software ANSYS FLUENT v12.1. The computations based on the finite volume method with the semi-implicit method for pressure-linked equations (SIMPLE) algorithm have been conducted. Circular sectioned transverse ribs are applied at the underside of the top of the duct, i.e., on the absorber plate. The rib-height-to-hydraulic diameter ratio ( ) is 0.042. The rib-pitch-to-rib-height ( ) ratios studied are 7.14, 10.71, 14.29 and 17.86. For each rib spacing simulations are executed at six different relevant Reynolds numbers from 3800 to 18000. The thermo-hydraulic performance parameter for = 10.71 is found to be the best for the investigated range of parameters at a Reynolds number of 15000.

Keywords： heat transfer     pressure drop     thermo-hydraulic performance parameter    

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Multi-Objective Optimization Design through Machine Learning for Drop-on-Demand Bioprinting Article

Jia Shi, Jinchun Song, Bin Song, Wen F. Lu

Engineering 2019, Volume 5, Issue 3,   Pages 586-593 doi: 10.1016/j.eng.2018.12.009

Abstract:

Drop-on-demand (DOD) bioprinting has been widely used in tissue engineering due to its highthroughput

Keywords： Drop-on-demand printing     Inkjet printing     Gradient descent multi-objective optimization     Fully connected    

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CFD simulation on shell-and-tube heat exchangers with small-angle helical baffles

Minhua ZHANG,Fang MENG,Zhongfeng GENG

Frontiers of Chemical Science and Engineering 2015, Volume 9, Issue 2,   Pages 183-193 doi: 10.1007/s11705-015-1510-x

Abstract: heat exchanger with helical baffles is superior to that with segmental baffles in reducing pressure dropthe three baffle shapes the heat exchangers with a 1/4 sector helical baffle have the lowest pressure drop

Keywords： heat transfer     pressure drop     helical baffle     CFD    

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Global CO2 Emissions Level Off in 2019, with a Drop Predicted in 2020

Sean O’Neill

Engineering 2020, Volume 6, Issue 9,   Pages 958-959 doi: 10.1016/j.eng.2020.07.005

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Numerical simulation on flow of ice slurry in horizontal straight tube

Shengchun LIU,Ming SONG,Ling HAO,Pengxiao WANG

Frontiers in Energy 2021, Volume 15, Issue 1,   Pages 201-207 doi: 10.1007/s11708-017-0451-0

Abstract: Numerical simulation on flow of ice slurry in horizontal straight tubes was conducted in this paper to improve its transportation characteristics and application. This paper determined the influence of the diameter and length of tubes, the ice packing factors (IPF) and the flow velocity of ice slurry on pressure loss by using numerical simulation, based on two-phase flow and the granular dynamic theory. Furthermore, it was found that the deviation between the simulation results and experimental data could be reduced from 20% to 5% by adjusting the viscosity which was reflected by velocity. This confirmed the reliability of the simulation model. Thus, two mathematical correlations between viscosity and flow velocity were developed eventually. It could also be concluded that future rheological model of ice slurry should be considered in three sections clarified by the flow velocity, which determined the fundamental difference from single-phase fluid.

Keywords： ice slurry     horizontal tubes     numerical simulation     pressure drop     viscosity model    

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Combined static mixers for high viscous fluids mixing

Zhenhao XI, Weizhen SUN, Ling ZHAO, Zhaoyan LIU

Frontiers of Chemical Science and Engineering 2009, Volume 3, Issue 1,   Pages 93-96 doi: 10.1007/s11705-009-0112-x

Abstract: The pressure drop of Cross-over-Disc is 12—26 times as large as that of empty pipe with equivalent diameterand three pairs from Sulzer-type) can be decreased to 2.1%—3.1% within a reasonable range of pressure drop

Keywords： static mixer     Cross-over-Disc     pressure drop     mixing performance     high viscous fluid    

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Title Author Date Type Operation

Leidenfrost drops on micro/nanostructured surfaces

Vishal TALARI, Prakhar BEHAR, Yi LU, Evan HARYADI, Dong LIU

Journal Article

CFD evaluation of pressure drop across a 3-D filter housing for industrial gas turbine plants

Fidelis I. ABAM,Samuel O. EFFIOM,Olayinka S. OHUNAKIN

Journal Article

A biofilter model for simultaneous simulation of toluene removal and bed pressure drop under varied inlet

Jinying XI,Insun KANG,Hongying HU,Xian ZHANG

Journal Article

Ultrasound-assisted emulsification solidified floating organic drop microextraction for the determination

Qingyun CHANG, Jingwen ZHANG, Xin DU, Jingjun MA, Jingci LI,

Journal Article

Hybrid intelligent water drop bundled wavelet neural network to solve the islanding detection by inverter-based

Mehrdad TARAFDAR HAGH,Homayoun EBRAHIMIAN,Noradin GHADIMI

Journal Article

The investigation of pressure drop in moving-beds

CHEN Yunhua, ZHU Xuedong, WU Yongqiang, ZHU Zibin

Journal Article

Research progress in robust design of products, drop impact strength

Yang Shuyi,Liu Deshun,Zhao Jiyun,Wen Zejun

Journal Article

Pressure drop analysis on the positive half-cell of a cerium redox flow battery using computational fluid

Fernando F. Rivera, Berenice Miranda-Alcántara, Germán Orozco, Carlos Ponce de León, Luis F. Arenas

Journal Article

Pressure Drop Characteristics of Flow Boiling in Microchannel With Low Aspect Ratio

Zhang Binglei,Xu Jinliang and Xiao Zejun

Journal Article

Heat transfer and fluid flow analysis of an artificially roughened solar air heater: a CFD based investigation

Anil Singh YADAV,J. L. BHAGORIA

Journal Article

Multi-Objective Optimization Design through Machine Learning for Drop-on-Demand Bioprinting

Jia Shi, Jinchun Song, Bin Song, Wen F. Lu

Journal Article

CFD simulation on shell-and-tube heat exchangers with small-angle helical baffles

Minhua ZHANG,Fang MENG,Zhongfeng GENG

Journal Article

Global CO2 Emissions Level Off in 2019, with a Drop Predicted in 2020

Sean O’Neill

Journal Article

Numerical simulation on flow of ice slurry in horizontal straight tube

Shengchun LIU,Ming SONG,Ling HAO,Pengxiao WANG

Journal Article

Combined static mixers for high viscous fluids mixing

Zhenhao XI, Weizhen SUN, Ling ZHAO, Zhaoyan LIU

Journal Article