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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: Pressure drops of flow boiling in a single microchannel having low aspect ratio were studied with effectsThe present experimental data were compared with the predictions of the homogeneous flow model and separatedflow model respectively.The comparison indicates that the homogeneous flow model cannot predict the twophase pressure drop wellflow model also failed to predict the twophase pressure drop in the microchannel of this study .

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

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Predictor-corrector algorithm for solving quasi-separated-flow and transient distributed-parameter model

Ping ZHANG, Guoliang DING

Frontiers in Energy 2010, Volume 4, Issue 4,   Pages 535-541 doi: 10.1007/s11708-010-0113-y

Abstract: stitution (SS) method is a suitable approach to solving the transient distributed-parameter model forHowever, this method must be enhanced because its convergence heavily depends on the iterative initial pressureWhen the iterative initial pressure is improperly assigned, the calculated flow rates become negativeA predictor is developed to determine an appropriate iterative initial pressure.Total fluid mass is adopted as the convergence criterion of pressure iteration instead of outlet flow

Keywords： algorithm     convergence     heat exchanger     modeling     transient    

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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 toimprove its transportation characteristics and application.velocity of ice slurry on pressure loss by using numerical simulation, based on two-phase flow and theThis confirmed the reliability of the simulation model.It could also be concluded that future rheological model of ice slurry should be considered in three

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

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Flow and thermal modeling of liquid metal in expanded microchannel heat sink

Frontiers in Energy   Pages 796-810 doi: 10.1007/s11708-023-0877-5

Abstract: Liquid metal-based microchannel heat sinks (MCHSs) suffer from the low heat capacity of coolant, resultingThe flow and thermal modeling of expanded microchannel heat sink (E-MCHS) were analyzed by both usingthe 3-dimensional (3D) numerical simulation and the 1-dimensional (1D) thermal resistance model.The fin efficiency of E-MCHS was derived to improve the accuracy of the 1D thermal resistance model.The expanded space endowed the heat sink with lower pressure, which might further reduce the pumping

Keywords： liquid metal cooling     heat sink     expanded microchannel     flow and thermal modeling    

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A novel flow-resistor network model for characterizing enhanced geothermal system heat reservoir

Jian GUO, Wenjiong CAO, Yiwei WANG, Fangming JIANG

Frontiers in Energy 2019, Volume 13, Issue 1,   Pages 99-106 doi: 10.1007/s11708-018-0555-1

Abstract: The fracture characteristics of a heat reservoir are of critical importance to enhanced geothermal systemsThis paper presents the development of a novel flow-resistor network model to describe the hydraulicFor heat reservoirs with various fracture configurations, the corresponding flow-resistor networks areidentical in terms of framework though the networks may have different section numbers and the flowThe results provide insight on the tortuosity of the flow path between different wells.

Keywords： enhanced geothermal systems     flow-resistor network model     fracture characteristics     heat reservoir    

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Flow boiling heat transfer in circulating fluidized bed

Xiaoguang REN , Jiangdong ZHENG , Sefiane KHELLIl , Arumemi-Ikhide MICHAEL ,

Frontiers in Energy 2009, Volume 3, Issue 1,   Pages 85-89 doi: 10.1007/s11708-008-0067-5

Abstract: In order to enhance heat transfer and mitigate contamination in the boiling processes, a new type ofvapor-liquid-solid (3-phase) circulating fluidized bed boiling system has been designed, combining acirculating fluidized bed with boiling heat transfer.Experimental results show an enhancement of the boiling curve.Flow visualization studies concerning flow hydrodynamics within the riser column are also conducted whose

Keywords： vapor-liquid-solid three phase     flow boiling heat transfer     circulating fluidized bed    

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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: the electrode compartments by mathematical models can be a powerful tool in the development of redox flowto determine their predictive capability, turbulent Reynolds-averaged Navier-Stokes (RANS) and free flowwere applied to compute local fluid velocities taking place in a rectangular channel electrochemical flowCalculated 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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Numerical simulation and analysis of periodically oscillating pressure characteristics of inviscid flow

Yan GU, Yonglin JU

Frontiers in Energy 2012, Volume 6, Issue 1,   Pages 21-28 doi: 10.1007/s11708-012-0173-2

Abstract: characteristics of inviscid flow in the rolling pipe.The computational model of the circular pipe flow is established with the excitated rolling motion, atThe influences of flow velocities and excitated conditions on pressure characteristics, including meanpressure, frequency and amplitude are systematically investigated.It is found that the pressure fluctuation of the inviscid flow remains almost constant at different flow

Keywords： pressure fluctuation     rolling     floating production storage and offloading unit for liquefied natural gas    

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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 filter housing model was proposed for a heavy-duty industrial gas turbine plant operating at an averageambient temperature of 20°C.The pressure drops across the classes of filters were 652.8 Pa, 2692.2 PaThe results obtained indicated an acceptable total pressure drop of 7.2% for the entire filter housingAlthough the CFD simulation result shows that small outlet flow velocity and transonic flows exist at

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

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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: The computations based on the finite volume method with the semi-implicit method for pressure-linked

Keywords： heat transfer     pressure drop     thermo-hydraulic performance parameter    

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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 apparatusThe experimental results show that the particle velocity has little influence on the pressure drop, whilethe phenomena of cavity and pinning occur when the cross-flow velocity is high enough.The 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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Theoretical study on flow and radiation in tubular solar photocatalytic reactor

Frontiers in Energy 2021, Volume 15, Issue 3,   Pages 687-699 doi: 10.1007/s11708-021-0773-9

Abstract: In this paper, based on the mixture flow model, an optimized six-flux model is first established andIt is found that, at the outlet of the reactor, the optimized six-flux model has better performances

Keywords： photocatalytic hydrogen photoreactor     nume- rical simulation     solar energy     flow model     radiation model    

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Numerical study of internal flow field and flow passage improvement of an inlet particle separator

Florian PAOLI, Tong WANG

Frontiers in Energy 2011, Volume 5, Issue 4,   Pages 386-397 doi: 10.1007/s11708-011-0156-8

Abstract: An adjacent objective of the study is to lower pressure losses of the inlet particle separator (IPS).No particle has been included in the gas flow for a -epsilon turbulence model.The velocity distribution in different sections and the pressure coefficient along the duct have beenBesides, pressure losses are greatly decreased in both outlets (up to 30% for high Reynolds number) andthe flow is uniform at the main outlet.

Keywords： streamlines     pressure losses     flow passage improvement     inlet particle separator (IPS)    

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Experimental study on saturated flow boiling heat transfer of R290/R152a binary mixtures in a horizontal

Xin ZOU, Maoqiong GONG, Gaofei CHEN, Zhaohu SUN, Jianfeng WU

Frontiers in Energy 2010, Volume 4, Issue 4,   Pages 527-534 doi: 10.1007/s11708-010-0109-7

Abstract: An experimental study on the saturated flow boiling heat transfer for a binary mixture of R290/R152aThe influences of different parameters such as quality, saturation pressure, heat flux, and mass fluxmodified correlation for the binary mixture is proposed based on the authors’ previous work on pool boiling

Keywords： flow boiling     heat transfer     binary mixture     R290/R152a    

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Local resistance of fluid flow across sudden contraction in small channels

Hang GUO, Ling WANG, Jian YU, Fang YE, Chongfang MA, Zhuo LI,

Frontiers in Energy 2010, Volume 4, Issue 2,   Pages 149-154 doi: 10.1007/s11708-009-0060-7

Abstract: The pressure drop caused by flow area contraction in microchannels has been experimentally studied inthis paper using the tiny gap pressure measurement method.The working fluid was deionized water at room temperature at near-atmospheric pressure.with the Reynolds number increasing, and it is much higher than that of conventional tubes in laminar flowwidely-applied correlation =0.5(1−) could not predict the contraction coefficient of turbulent flow

Keywords： microchannels     pressure drop     abrupt contraction     loss coefficients    

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Title Author Date Type Operation

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

Zhang Binglei,Xu Jinliang and Xiao Zejun

Journal Article

Predictor-corrector algorithm for solving quasi-separated-flow and transient distributed-parameter model

Ping ZHANG, Guoliang DING

Journal Article

Numerical simulation on flow of ice slurry in horizontal straight tube

Shengchun LIU,Ming SONG,Ling HAO,Pengxiao WANG

Journal Article

Flow and thermal modeling of liquid metal in expanded microchannel heat sink

Journal Article

A novel flow-resistor network model for characterizing enhanced geothermal system heat reservoir

Jian GUO, Wenjiong CAO, Yiwei WANG, Fangming JIANG

Journal Article

Flow boiling heat transfer in circulating fluidized bed

Xiaoguang REN , Jiangdong ZHENG , Sefiane KHELLIl , Arumemi-Ikhide MICHAEL ,

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

Numerical simulation and analysis of periodically oscillating pressure characteristics of inviscid flow

Yan GU, Yonglin JU

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

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

The investigation of pressure drop in moving-beds

CHEN Yunhua, ZHU Xuedong, WU Yongqiang, ZHU Zibin

Journal Article

Theoretical study on flow and radiation in tubular solar photocatalytic reactor

Journal Article

Numerical study of internal flow field and flow passage improvement of an inlet particle separator

Florian PAOLI, Tong WANG

Journal Article

Experimental study on saturated flow boiling heat transfer of R290/R152a binary mixtures in a horizontal

Xin ZOU, Maoqiong GONG, Gaofei CHEN, Zhaohu SUN, Jianfeng WU

Journal Article

Local resistance of fluid flow across sudden contraction in small channels

Hang GUO, Ling WANG, Jian YU, Fang YE, Chongfang MA, Zhuo LI,

Journal Article