Search | Engineering

Subscribe Submit

Home Journals Focus Achievement Fronts About Us 中文版

Resource Type

Journal Article 388

Year

2024 2

2023 33

2022 28

2021 31

2020 24

2019 28

2018 16

2017 23

2016 17

2015 14

2014 10

2013 15

2012 9

2011 14

2010 23

2009 19

2008 20

2007 18

2006 9

2005 3

open ︾

Keywords

Air pollution 10

air pollution 8

numerical simulation 7

air quality 4

ozone 4

simulation 4

Air pollution control 3

China 3

Air pollution exposure 2

Air quality 2

CFD 2

CO₂ 2

Catalytic wet air oxidation 2

Microfabrication 2

Phenol 2

air pollution control 2

air temperature 2

air-conditioning 2

artificial intelligence 2

open ︾

Search scope:

排序： Display mode:

Numerical simulation of micro scale flowing and boiling

Wen WANG, Rui ZHUAN,

Frontiers in Energy 2009, Volume 3, Issue 4, Pages 396-401 doi: 10.1007/s11708-009-0049-2

Abstract: Numerical simulations of flowing and boiling in micro channels are presented, including the modelingof bubble dynamics of nucleate boiling, and a description of the interface of two phases with the volume-of-fluidThe simulated results also show the details of 3-dimensional heat transfer and the flow in micro channels, which are helpful to the investigation of the mechanism of two-phase heat transfer and flow in micro

Keywords： volume-of-fluid (VOF) micro channel nucleate boiling bubble dynamics simulation

HTML PDF Collect

Research on Self-sensitization Theory of Expanded Ammonium Nitrate

Lv Chunxu

Strategic Study of CAE 2000, Volume 2, Issue 11, Pages 73-77

Abstract: key point of the present innovation .On the basis of heat points initiating mechanism of explosion, microair bubble is embedded in explosive of expanded AN. the theoretical basis of self-sensitization is providedthrough calculation of critical heat point temperature of micro air bubble.Comparing expanded AN with common AN and pearlstone, the micro air bubble distribution and its regularity

Keywords： expanded AN self-sensitization theory micro air bubble

HTML PDF Collect

Feasibility of bubble surface modification for natural organic matter removal from river water usingdissolved air flotation

Yulong Shi, Jiaxuan Yang, Jun Ma, Congwei Luo

Frontiers of Environmental Science & Engineering 2017, Volume 11, Issue 6, doi: 10.1007/s11783-017-0954-2

Abstract: A novel, functionalized bubble surface can be obtained in dissolved air flotation (DAF) by dosing chemicalsIn this study, different cationic chemicals were used as bubble surface modifiers, and their effectsThe results showed that chitosan was the most promising bubble modifier compared with a surfactant andPositive bubble modification provides an alternative approach for DAF to enhance NOM removal.

Keywords： Bubble surface modification Chitosan Disinfection by-product Dissolved air flotation Organic fraction

HTML PDF Collect

Simulation of bubble column reactors using CFD coupled with a population balance model

Tiefeng WANG

Frontiers of Chemical Science and Engineering 2011, Volume 5, Issue 2, Pages 162-172 doi: 10.1007/s11705-009-0267-5

Abstract: Bubble columns are widely used in chemical and biochemical processes due to their excellent mass andDue to the importance of the bubble behavior, the bubble size distribution must be considered in theThe population balance model (PBM) is an effective approach to predict the bubble size distribution,Bubble breakup and coalescence models due to different mechanisms are discussed.in high gas holdup, and interphase forces of bubble swarms.

Keywords： bubble column computational fluid dynamics bubble breakup and coalescence population balance model bubble

HTML PDF Collect

Experimental study on bubble behavior and CFD simulation of large-scale slurry bubble column reactor

Haoyi SUN, Tao LI, Weiyong YING, Dingye FANG

Frontiers of Chemical Science and Engineering 2010, Volume 4, Issue 4, Pages 515-522 doi: 10.1007/s11705-010-0516-7

Abstract: Slurry bubble column reactors (SBCR) is a three-phase fluidized reactor with outstanding advantages comparedIn this paper, an experiment was conducted to investigate the bubble behavior in SBCR with a height ofBubble rise velocity, bubble diameter, and gas holdup in different radial and axial positions are measuredTap water, air, and glass beads (mean diameter 75–150 μm) are used as liquid, gas, and solid phases,

Keywords： SBCR four-channel conductivity probe hydrodynamics CFD

HTML PDF Collect

Experimental study on the stratum applicability and mechanisms of bubble–slurry for earth pressure balance

Frontiers of Structural and Civil Engineering Pages 1387-1399 doi: 10.1007/s11709-023-0005-y

Abstract: The slump, volume stability, and permeability test of bubble–slurry-conditioned sand was conducted toexamine the conditioning effect, and the stratum applicability of bubble–slurry was determined fromIt was found that the conditioning effect of bubble–slurry in coarse gravel soil was excellent and couldThe main stabilization mechanism of bubble–slurry is that bentonite particles provide a space barrierAnd three seepage modes of bubble–slurry-conditioned sand were innovatively defined, and the occurrence

Keywords： EPB shield bubble–slurry soil conditioning stability permeability

HTML PDF Collect

The role of single deformed bubble on porous foam tray with submerged orifices on the mass transfer enhancement

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 12, Pages 2127-2143 doi: 10.1007/s11705-023-2363-3

Abstract: In this work, the actual porous structure of the foam tray is obtained based on micro computed tomographyliquid encroaching on the gas channels causes the increasing orifices velocity, which makes the trailing bubbleeasily detach from the midst of the leading bubble and causes pairing coalescence.

Keywords： bubble formation porous submerged orifices process intensification foam tray

HTML PDF Collect

Synchronous observation of rising soluble bubble through quiescent solution

Yifu ZHANG , Shuai TIAN , Weizhong LI , Yongchen SONG ,

Frontiers in Energy 2009, Volume 3, Issue 3, Pages 307-312 doi: 10.1007/s11708-009-0028-7

Abstract: A model was set up to describe the behavior of the bubble in a visual experimental system in which ahigh-speed camera rose instantaneously with the movement of the bubble.A series of trajectory videos about the bubble were recorded by a computer linked to the camera.The trajectory, volume changes and rate of mass transfer of the bubble were obtained by the CIPT.With the volume decreasing, the disturbed behavior of the bubble becomes tempered.

Keywords： soluble bubble mass transfer synchronous observation computer image processing

HTML PDF Collect

Study on direct alcohol/ether fuel synthesis process in bubble column slurry reactor

Zhen CHEN, Haitao ZHANG, Weiyong YING, Dingye FANG

Frontiers of Chemical Science and Engineering 2010, Volume 4, Issue 4, Pages 461-471 doi: 10.1007/s11705-010-0517-6

Abstract: 25 experimental data, and a steady-state one-dimensional mathematical model was further developed in bubblecolumn slurry reactor (BCSR), which was assumed that the bubble phase was plug flow, and the liquid

Keywords： syngas alcohol/ether fuel slurry catalyst bubble column slurry reactor global kinetics mathematical model

HTML PDF Collect

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: In this study, the effect of ethanol addition into pure water and its concentration on bubble diameterAir and water with ethanol (concentration ranging from 0%–1%, v/v) were as dispersed and continuous phasesBubble size distribution was measured by photography and picture analysis at various concentrations ofAlcohol concentration enhancement caused bubble diameter to decrease.

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

HTML PDF Collect

Flexible micro flow sensor for micro aerial vehicles

Rong ZHU, Ruiyi QUE, Peng LIU

Frontiers of Mechanical Engineering 2017, Volume 12, Issue 4, Pages 539-545 doi: 10.1007/s11465-017-0427-0

Abstract:

This article summarizes our studies on micro flow sensors fabricated on a flexible polyimide circuitThe micro flow sensor has merits of flexibility, structural simplicity, easy integrability with circuitsIn our study, we install the fabricated micro flow sensors on micro aerial vehicles (MAVs) to detect

Keywords： micro flow sensor flexible sensor surface flow sensing aerodynamic parameter micro aerial vehicle (MAV

HTML PDF Collect

Dependence of error sensitivity of frequency on bias voltage in force-balanced micro accelerometer

Lili CHEN, Wu ZHOU

Frontiers of Mechanical Engineering 2013, Volume 8, Issue 2, Pages 146-149 doi: 10.1007/s11465-013-0260-z

Abstract:

To predict more precisely the frequency of force-balanced micro accelerometer with different biasBased on the theoretical results, micro accelerometer is fabricated and tested to study the influences

Keywords： Micro-Electro-Mechanical Systems (MEMS) micro accelerometer force-balanced micro accelerometer frequency

HTML PDF Collect

Dynamical research on spherical micro actuator with piezoelectric ceramic stacks drivers

ZHANG Ruihua, CHEN Haichu

Frontiers of Mechanical Engineering 2007, Volume 2, Issue 4, Pages 433-438 doi: 10.1007/s11465-007-0074-y

Abstract: This paper develops a 30 mm × 30 mm × 50 mm spherical micro actuator driven by piezoelectric ceramicwith a micro-gripper based on the sample spherical micro actuator, and the experimental research onthe micro assembly is conducted between a micro shaft of 180 μm and a micro spindle sleeve of 200 μm.the metal sphere and the friction block of the micro driving unit are analyzed.micro operation and assembly for micro electro mechanical systems (MEMS) or other microelements in micro

Keywords： spherical micro-gripper friction coefficient dynamic frequency

HTML PDF Collect

Laboratory assessment of Alaska aggregates using Micro-Deval test

Jenny LIU,Sheng ZHAO,Anthony MULLIN

Frontiers of Structural and Civil Engineering 2017, Volume 11, Issue 1, Pages 27-34 doi: 10.1007/s11709-016-0359-5

Abstract: This paper presents a study to investigate the feasibility of using Micro-Deval test, commonly used inMicro-Deval test, Washington degradation test and other tests currently specified in Alaska were conductedBased on the testing results, it is found that using Micro-Deval test for durability assessment of Alaskaaggregates was feasible and reproducible, and a high potential was revealed to use Micro-Deval testIt is recommended that Micro-Deval test be considered as an additional test for a certain period, but

Keywords： aggregate durability Washington degradation test Micro-Deval test

HTML PDF Collect

Characterization of micro-mixing in a novel impinging streams reactor

Hui HU, Zhiming CHEN, Zhen JIAO

Frontiers of Chemical Science and Engineering 2009, Volume 3, Issue 1, Pages 58-64 doi: 10.1007/s11705-009-0106-8

Abstract: increase of flux, the decrease of inter-nozzle distance and a suitable circulation can improve the micro-mixingBased on turbulence theory, it was estimated that the characteristic micro-mixing time was 0.002—0.02The micro-mixing time was related to the segregation index, which was in good agreement with those in

Keywords： micro-mixing impinging streams reactor turbulent mixing mass transfer