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Deviation correction strategy for the earth pressure balance shield based on shield–soil interactions

Frontiers of Mechanical Engineering 2022, Volume 17, Issue 2, doi: 10.1007/s11465-022-0676-4

Abstract: decision-making approach for the deviation correction trajectory and posture rectification load for an earth pressure

Keywords： additional position change     deviation correction trajectory     earth pressure balance shield     mechanical    

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Combustion instability detection using the wavelet detail of pressure fluctuations

JI Junjie, LUO Yonghao

Frontiers in Energy 2008, Volume 2, Issue 1,   Pages 116-120 doi: 10.1007/s11708-008-0019-0

Abstract: A combustion instability detection method that uses the wavelet detail of combustion pressure fluctuationsTo confirm this method, combustion pressure fluctuations in a stoker boiler are recorded at stable andunstable combustion with a pressure transducer.It shows that the wavelet approximation indicates the general pressure change in the furnace, and the

Keywords： comparison     wavelet approximation     pressure transducer     general pressure     consistent    

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Hydraulic fracturing pressure of concentric double-layered cylinder in cohesive soil

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 4,   Pages 937-947 doi: 10.1007/s11709-021-0754-4

Abstract: First, an analytical solution for fracturing pressure in two different concentric regions of soil wasFirst, there is a linear relationship between the fracturing pressure and confining pressure in concentricinternal-layer soil is softer than the external-layer soil, the presence of internal soil on the fracturing pressureexternal-layer soil, the existence of the internal-layer soil has a strengthening effect on the fracturing pressureMoreover, the influence of strength distinction between the two layers on the fracturing pressure is

Keywords： hydraulic fracturing pressure     layered     cavity expansion theory     triaxial fracturing test     cohesive soil    

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“Partial pressures” of humid air in wide pressure and temperature ranges

Zidong WANG, Hanping CHEN, Shilie WENG

Frontiers in Energy 2013, Volume 7, Issue 4,   Pages 511-517 doi: 10.1007/s11708-013-0281-7

Abstract: “Partial pressure” in humid air is a question very much concerned by scientists and no satisfactory answerresults obtained by the proposed method are quite different from that obtained by Dalton’s partial pressureThe fundamental behaviors of water vapor and dry air are studied in depth in wide pressure and temperatureOne discovery is that the “partial pressure” of the water vapor in saturated humid air equals , rather

Keywords： partial pressure     Dalton’s partial pressure law     humid air     saturated     unsaturated    

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Non-invasive continuous blood pressure monitoring: a review of current applications

Elena Chung, Guo Chen, Brenton Alexander, Maxime Cannesson

Frontiers of Medicine 2013, Volume 7, Issue 1,   Pages 91-101 doi: 10.1007/s11684-013-0239-5

Abstract:

Blood pressure monitoring has come a long way from the initial observations made by Reverend HalesThere are none that deny the importance of monitoring perioperative blood pressure; however, the limitedblood pressure measurements leaves room for improvement.Invasive monitoring is able to detect beat-to-beat blood pressure measurement, but the risks inherent, and especially the creation of those offering non-invasive but continuous blood pressure monitoring

Keywords： non-invasive blood pressure monitoring     continuous blood pressure monitoring     invasive blood pressure monitoring    

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Upper bound solution to seismic active earth pressure of submerged backfill subjected to partial drainage

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 6,   Pages 1480-1493 doi: 10.1007/s11709-021-0776-y

Abstract: This paper proposes a general analytical method to evaluate the seismic active earth pressure on a retainingtotal head, ii) upper bound solution of seismic active earth thrust, and iii) deduction for the earth pressurerelies on the Fourier series expansions, and the expressions of the seismic active earth thrust and pressurereveal that insufficient drainage and earthquakes are crucial factors that cause unfavorable earth pressuremethod is consistent with other relevant existing methods in terms of predicting seismic active earth pressure

Keywords： seismic active earth pressure     partial seepage flow     pore pressure     anisotropy     upper bound theorem    

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Assessment and validation of liquid breakup models for high-pressure dense diesel sprays

Yi REN,Xianguo LI

Frontiers in Energy 2016, Volume 10, Issue 2,   Pages 164-175 doi: 10.1007/s11708-016-0407-9

Abstract: In this paper, different models for liquid breakup processes in high-pressure dense diesel sprays andRayleigh-Taylor (RT) breakup model gives the most reasonable predicted results in both engine simulation and high-pressurebased models and the RT model do not provide reasonable predictions for the characteristics of high-pressure

Keywords： breakup model     diesel engine     high-pressure injection     simulations    

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Effect of pressure on gasification reactivity of three Chinese coals with different ranks

Chunyu LI, Jiantao ZHAO, Yitian FANG, Yang WANG

Frontiers of Chemical Science and Engineering 2010, Volume 4, Issue 4,   Pages 385-393 doi: 10.1007/s11705-010-0501-1

Abstract: Results show that the char gasification reactivity increases with increasing partial pressure.gasification reaction is controlled by pore diffusion, the rate decreases with increasing total system pressure, and under chemical kinetic control there is no pressure dependence.With the coal rank increasing, the pressure order is higher, the activation energies increase slightly

Keywords： coal     gasification     pressure     reaction order     shrinking core model    

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

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

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Surface-Driven High-Pressure Processing Perspective

Keith E. Gubbins, Kai Gu, Liangliang Huang, Yun Long, J. Matthew Mansell, Erik E. Santiso, Kaihang Shi, Małgorzata Ś liwińska-Bartkowiak, Deepti Srivastava

Engineering 2018, Volume 4, Issue 3,   Pages 311-320 doi: 10.1016/j.eng.2018.05.004

Abstract:

The application of high pressure favors many chemical processes, providing higher yields or improvedAn alternative approach to high-pressure processing is proposed here, in which very high local pressuresSince the active high-pressure processing zone is inhomogeneous, the pressure is different in differentpressure) that is most greatly enhanced.to high-pressure processing based on surface-driven forces is discussed.

Keywords： Confinement     High pressure     High pressure phase     High pressure reaction     High pressure manufacture     High pressure    

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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: The 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 flowThe amplitude of the pressure fluctuation increases with the increasing of the excitated amplitude, andIt is also found that the period of the pressure fluctuation varies with the excitated frequency.

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

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Effects of pressure and temperature on fixed-site carrier membrane for CO 2 separation from natural gas

Meng WANG, Dongxiao YANG, Zhi WANG, Jixiao WANG, Shichang WANG,

Frontiers of Chemical Science and Engineering 2010, Volume 4, Issue 2,   Pages 127-132 doi: 10.1007/s11705-009-0231-4

Abstract: CH decreased with the increase of temperature, and the permeances decreased more quickly under low pressurethan those under high pressure.At the feed pressure of 0.11MPa, the CO/ CH selectivity of PEI-PVA/PS blend composite membraneUnder the feed pressure of 0.21MPa, as well as 1.11MPa, the selectivity decreased with

Keywords： temperature increment     high pressure     permselectivity     separation performance     temperature    

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Numerical investigation and optimal design of fiber Bragg grating based wind pressure sensor

Xiangjie WANG, Danhui DAN, Rong XIAO, Xingfei YAN

Frontiers of Structural and Civil Engineering 2017, Volume 11, Issue 3,   Pages 286-292 doi: 10.1007/s11709-017-0415-9

Abstract: A wind pressure sensor based on fiber Bragg grating (FBG) for engineering structure was investigatedWe established a transaction model of wind pressure to strain and proposed a method of temperature compensationthe basic parameters of the sensor were optimized with the aim of maximum strain under the basic wind pressureThe result shows that the wind pressure sensor we proposed is well performed and have good sensing properties

Keywords： wind pressure measurement     wind pressure sensor     fiber Bragg grating     optimal design    

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Spray characteristics of high-pressure swirl injector fueled with alcohol

WANG Xibin, CHEN Wansheng, GAO Jian, JIANG Deming, HUANG Zuohua

Frontiers in Energy 2007, Volume 1, Issue 1,   Pages 105-112 doi: 10.1007/s11708-007-0012-z

Abstract: The spray characteristics of methanol and ethanol with high-pressure swirl injector were explored experimentallyUnder the low back-pressure ambient conditions, the spray behavior exhibited a hollow cone with wideVortexes in the opposite direction existed in the rear part of the spray under low back-pressure ambientconditions while the vortexes formed in the middle part under high back-pressure ambient conditions., but displayed a slightly larger value under high back-pressure due to fuel evaporation.

Keywords： low back-pressure     diameter     initial spray     hollow     middle    

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Simulation analysis of pressure regulation of hydraulic thrust system on a shield tunneling machine

Zhibin LIU, Haibo XIE, Huayong YANG

Frontiers of Mechanical Engineering 2011, Volume 6, Issue 3,   Pages 377-382 doi: 10.1007/s11465-011-0226-y

Abstract: Pressure regulation of thrust cylinders is the most important function for thrust system during tunnelPressure regulation of a certain group’s cylinders has little influence on regulation of the otherPump displacement may have a greater effect on pressure regulation and oil supply flow rate should beA exacting situation is simulated to explain how pressure regulation works during tunnel excavation.

Keywords： tunnel     hydraulic thrust system     pressure regulation     simulation    

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Title Author Date Type Operation

Deviation correction strategy for the earth pressure balance shield based on shield–soil interactions

Journal Article

Combustion instability detection using the wavelet detail of pressure fluctuations

JI Junjie, LUO Yonghao

Journal Article

Hydraulic fracturing pressure of concentric double-layered cylinder in cohesive soil

Journal Article

“Partial pressures” of humid air in wide pressure and temperature ranges

Zidong WANG, Hanping CHEN, Shilie WENG

Journal Article

Non-invasive continuous blood pressure monitoring: a review of current applications

Elena Chung, Guo Chen, Brenton Alexander, Maxime Cannesson

Journal Article

Upper bound solution to seismic active earth pressure of submerged backfill subjected to partial drainage

Journal Article

Assessment and validation of liquid breakup models for high-pressure dense diesel sprays

Yi REN,Xianguo LI

Journal Article

Effect of pressure on gasification reactivity of three Chinese coals with different ranks

Chunyu LI, Jiantao ZHAO, Yitian FANG, Yang WANG

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

Surface-Driven High-Pressure Processing

Keith E. Gubbins, Kai Gu, Liangliang Huang, Yun Long, J. Matthew Mansell, Erik E. Santiso, Kaihang Shi, Małgorzata Ś liwińska-Bartkowiak, Deepti Srivastava

Journal Article

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

Yan GU, Yonglin JU

Journal Article

Effects of pressure and temperature on fixed-site carrier membrane for CO 2 separation from natural gas

Meng WANG, Dongxiao YANG, Zhi WANG, Jixiao WANG, Shichang WANG,

Journal Article

Numerical investigation and optimal design of fiber Bragg grating based wind pressure sensor

Xiangjie WANG, Danhui DAN, Rong XIAO, Xingfei YAN

Journal Article

Spray characteristics of high-pressure swirl injector fueled with alcohol

WANG Xibin, CHEN Wansheng, GAO Jian, JIANG Deming, HUANG Zuohua

Journal Article

Simulation analysis of pressure regulation of hydraulic thrust system on a shield tunneling machine

Zhibin LIU, Haibo XIE, Huayong YANG

Journal Article