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Investigation of bubble diameter and flow regime between water and dilute aqueous ethanol solutions in

Baharak SAJJADI, Mostafa Keshavarz MORAVEJI, Reza DAVARNEJAD

Frontiers of Chemical Science and Engineering 2011, Volume 5, Issue 2,   Pages 194-202 doi: 10.1007/s11705-010-1019-2

Abstract: effect of ethanol addition into pure water and its concentration on bubble diameter, gas hold-up and flowFor ethanol solutions in lower superficial gas velocity, a homogenous flow regime was observed.The transition flow regime occurred after this datum although in pure water, a homogenous flow regime

Keywords: airlift rector     bubble diameter     gas hold-up     flow regime     ethanol    

Experimental study for the stratified to slug flow regime transition mechanism of gas-oil two-phase flow

LIU Yiping, YANG Weilin, WANG Jing

Frontiers in Energy 2008, Volume 2, Issue 2,   Pages 152-157 doi: 10.1007/s11708-008-0012-7

Abstract: contains less empiricism than the commonly used Taitel-Dukler model, and the ideal model for stratified flowfor the gas-liquid flow in horizontal pipes are presented.of slugging occurs, were predicted, and theoretical analysis was conducted on the stratified to slug flowregime transition.The results show that this approach gives a reasonable prediction over the whole range of flow rates,

Keywords: two-phase     Superficial     reasonable prediction     one-dimensional     gas-liquid    

Study of two-phase flow regime identification in horizontal tube bundles under vertical upward cross-flow

HUANG Xinghua, WANG Li, JIA Feng

Frontiers in Energy 2008, Volume 2, Issue 3,   Pages 333-338 doi: 10.1007/s11708-008-0043-0

Abstract: A wavelet-transform based approach for flow regime identification in horizontal tube bundles under verticalDifferent time-scale characteristics in bubbly flow, churn flow and annular flow were analyzed.The wavelet energy distributions over scales were found to be appropriate for flow regime identificationBased on the wavelet energy distribution over characteristic scales, a criterion of flow regime identificationregime identification in horizontal tube bundles under vertical upward cross-flow condition.

Keywords: two-phase     discrete     appropriate     wavelet-transform     criterion    

Burnett simulations of gas flow and heat transfer in microchannels

Fubing BAO, Jianzhong LIN

Frontiers of Mechanical Engineering 2009, Volume 4, Issue 3,   Pages 252-263 doi: 10.1007/s11465-009-0037-6

Abstract: In micro- and nanoscale gas flows, the flow falls into the transition flow regime.The Navier-Stokes equations fail to describe the gas flow in this regime.As a result, the high-order Burnett equations are used to study the gas flow and heat transfer characteristicsaugmented Burnett equations with high-order slip boundary conditions are then used to model the gas flowand heat transfer in Couette and Poiseuille flows in the transition regime.

Keywords: micro- and nanoscale gas flow     slip-transition flow regime     Burnett equations     numerical simulation    

Experimental investigation of multiphase flow behavior in drilling annuli using high speed visualization

Alap Ali ZAHID, Syed Raza ur REHMAN, Anwarul HASAN, S. RUSHD, Mohammad Azizur RAHMAN

Frontiers in Energy 2020, Volume 14, Issue 3,   Pages 635-643 doi: 10.1007/s11708-018-0582-y

Abstract: important technique to visualize the drilling conditions and to study the physics of complex multiphase flowThe main advantage of visualizing multiphase flow in a drilling annulus is that the viewer can easilydistinguish fluid phases, flow patterns and thicknesses of cutting beds.The two-phase (solid-liquid) and the three-phase (solid-liquid-gas) flow conditions involved in this

Keywords: visualization     horizontal annulus     hole cleaning     multiphase flow     image analysis     flow regime    

A Versatile Flow-Profile Engineering Method in the Stokes Flow Regime for Complex-Shaped Flows Article

Zhenyu Yang, Lang Nan, Ho Cheung Shum

Engineering 2021, Volume 7, Issue 5,   Pages 655-662 doi: 10.1016/j.eng.2021.02.008

Abstract: Conventionally, flow profiles are engineered by inducing inertial secondary flow to redistribute theMoreover, each of the flow profiles specifically corresponds to a strictly defined flow condition andcannot be generalized to other flow environments.secondary flow.The flow is manipulated in the Stokes regime by deploying a cascaded series of microsteps with various

Keywords: Microfluidics     Flow profile     Stokes flow     Hydrodynamic focusing     Flow shaping    

Calculation of collision frequency function for aerosol particles in free molecule regime in presence

Xiaowei LUO, Yannick BENICHOU, Suyuan YU

Frontiers in Energy 2013, Volume 7, Issue 4,   Pages 506-510 doi: 10.1007/s11708-013-0275-5

Abstract: collision frequency function for aerosol particles has already been calculated for the free molecule regimecollision frequency in the case of particles much smaller than the mean free path of the gas (free molecule regime

Keywords: aerosol particles     collision frequency function     coagulation    

Kinetic roughening transition and missing regime transition of melt crystallized polybutene-1 tetragonal

Motoi YAMASHITA

Frontiers of Chemical Science and Engineering 2009, Volume 3, Issue 2,   Pages 125-134 doi: 10.1007/s11705-009-0001-3

Abstract: The morphology and lateral growth rate of polybutene-1 ( -PB1) have been investigated for crystallization from the melt over a wide range of crystallization temperatures from 50 to 110°C. The morphology of -PB1 crystals is a rounded shape at crystallization temperatures lower than 85°C, while lamellar single crystals possess faceted morphology at higher crystallization temperatures. The kinetic roughening transition occurs around 85°C. The nucleation and growth mechanism for crystallization does not work below 85°C, since the growth face is rough. However, the growth rate shows the supercooling dependence derived from the nucleation and growth mechanism. The nucleation theory seems still to work even for rough surface growth. Possible mechanisms for the crystal growth of this polymer are discussed.

Keywords: isotactic polybutene-1     tetragonal phase (form Ⅱ)     melt crystallization     growth rate     kinetic roughening     morphology    

Numerical study on natural convection in a square enclosure containing a rectangular heated cylinder

Jianhua LU, Zhaoli GUO, Zhenhua CHAI, Baochang SHI,

Frontiers in Energy 2009, Volume 3, Issue 4,   Pages 373-380 doi: 10.1007/s11708-009-0078-x

Abstract: detailed study is conducted on the effect of the cylinder width and the Rayleigh number on the fluid flowThe flow structures and heat transfer patterns are classified into eight buoyant regimes, i.e., foursteady regimes, two periodic regimes, one multiple periodic regime, and one chaos regime, two of which

Keywords: natural convection     buoyant regime     heated cylinder     lattice Boltzmann    

photogeneration and extraction dynamics of polymer solar cells probed by a transient photocurrent nearby the regime

Boa Jin, Hyunmin Park, Yang Liu, Leijing Liu, Jongdeok An, Wenjing Tian, Chan Im

Frontiers of Chemical Science and Engineering 2021, Volume 15, Issue 1,   Pages 164-179 doi: 10.1007/s11705-020-1976-z

Abstract: After the correction for the saturation behavior at a high excitation-intensity range nearby the regime

Keywords: charge-carrier photogeneration     transient photocurrent     polymer solar cells     charge-carrier extraction     space charge-limited current    

Is atmospheric oxidation capacity better in indicating tropospheric O formation?

Frontiers of Environmental Science & Engineering 2022, Volume 16, Issue 5, doi: 10.1007/s11783-022-1544-5

Abstract:

● This study summarizes and evaluates different approaches that indicate O3 formation.

Keywords: O3     AOC     O3 formation regime    

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: By performing gas flow field numerical simulations for several inlet Reynolds numbers (from 2 × 10to 9 × 10 ) and byflow ratios (from 10% to 20%), the present study has proposed to improve the flowNo particle has been included in the gas flow for a -epsilon turbulence model.Then the flow passage improvement method has focused on the separation area.in this study has succeeded in designing a shape which enhances the flow behavior.

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

EFFECTS OF SUBSTITUTION OF MINERAL NITROGEN WITH ORGANIC AMENDMENTS ON NITROGEN LOSS FROM SLOPING CROPLAND OF PURPLE SOIL

Frontiers of Agricultural Science and Engineering 2022, Volume 9, Issue 3,   Pages 396-406 doi: 10.15302/J-FASE-2022456

Abstract:

● Interflow acts as the dominant pathway for N loss loadings.

Keywords: improved fertilization regime     interflow     nitrogen forms     nitrogen leaching     purple soil     sloping cropland    

The Following-observing Method for Substance Flow Analysis

Lu Zhongwu

Strategic Study of CAE 2006, Volume 8, Issue 1,   Pages 18-25

Abstract:

The fundamental argument set forth in the paper is that flow is the common feature of fluid flow andsubstance flow.(constant output of product), but also for unsteady substance flow (increasing or decreasing outputThe following-observing model of substance flow was explained by using iron flow diagram in the lifeof indexes of lead flow.

Keywords: methods of substance flow analysis     following-observing method for substance flow analysis     basic equationsfor substance flow analysis     degree of unsteadiness of substance flow    

UPFC setting to avoid active power flow loop considering wind power uncertainty

Shenghu LI, Ting WANG

Frontiers in Energy 2023, Volume 17, Issue 1,   Pages 165-175 doi: 10.1007/s11708-020-0686-z

Abstract: The active power loop flow (APLF) may be caused by impropriate network configuration, impropriate parameterThe power flow controllers, e.g., the unified power flow controller (UPFC), may be the reason and thepaper, the critical existence condition of the APLF is newly integrated into the simultaneous power flowapproaching to the critical existing condition, the integrated power flow needs less iterations andBesides, with wind power fluctuation, the interval power flow (IPF) is introduced into the integrated

Keywords: active power loop flow (APLF)     unified power flow controller (UPFC)     wind power uncertainty     interval powerflow (IPF)    

Title Author Date Type Operation

Investigation of bubble diameter and flow regime between water and dilute aqueous ethanol solutions in

Baharak SAJJADI, Mostafa Keshavarz MORAVEJI, Reza DAVARNEJAD

Journal Article

Experimental study for the stratified to slug flow regime transition mechanism of gas-oil two-phase flow

LIU Yiping, YANG Weilin, WANG Jing

Journal Article

Study of two-phase flow regime identification in horizontal tube bundles under vertical upward cross-flow

HUANG Xinghua, WANG Li, JIA Feng

Journal Article

Burnett simulations of gas flow and heat transfer in microchannels

Fubing BAO, Jianzhong LIN

Journal Article

Experimental investigation of multiphase flow behavior in drilling annuli using high speed visualization

Alap Ali ZAHID, Syed Raza ur REHMAN, Anwarul HASAN, S. RUSHD, Mohammad Azizur RAHMAN

Journal Article

A Versatile Flow-Profile Engineering Method in the Stokes Flow Regime for Complex-Shaped Flows

Zhenyu Yang, Lang Nan, Ho Cheung Shum

Journal Article

Calculation of collision frequency function for aerosol particles in free molecule regime in presence

Xiaowei LUO, Yannick BENICHOU, Suyuan YU

Journal Article

Kinetic roughening transition and missing regime transition of melt crystallized polybutene-1 tetragonal

Motoi YAMASHITA

Journal Article

Numerical study on natural convection in a square enclosure containing a rectangular heated cylinder

Jianhua LU, Zhaoli GUO, Zhenhua CHAI, Baochang SHI,

Journal Article

photogeneration and extraction dynamics of polymer solar cells probed by a transient photocurrent nearby the regime

Boa Jin, Hyunmin Park, Yang Liu, Leijing Liu, Jongdeok An, Wenjing Tian, Chan Im

Journal Article

Is atmospheric oxidation capacity better in indicating tropospheric O formation?

Journal Article

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

Florian PAOLI, Tong WANG

Journal Article

EFFECTS OF SUBSTITUTION OF MINERAL NITROGEN WITH ORGANIC AMENDMENTS ON NITROGEN LOSS FROM SLOPING CROPLAND OF PURPLE SOIL

Journal Article

The Following-observing Method for Substance Flow Analysis

Lu Zhongwu

Journal Article

UPFC setting to avoid active power flow loop considering wind power uncertainty

Shenghu LI, Ting WANG

Journal Article