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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 influences of flow velocities and excitated conditions on pressure characteristics, including meanpressure, frequency and amplitude are systematically investigated.The 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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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 experimentallyExperimental results show that the spray characteristics of methanol and ethanol had displayed the sameUnder the low back-pressure ambient conditions, the spray behavior exhibited a hollow cone with wide, but displayed a slightly larger value under high back-pressure due to fuel evaporation.Numerical simulation could successfully demonstrate the spray characteristics of high-pressure swirl

Keywords： low back-pressure     diameter     initial spray     hollow     middle    

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An investigation into the heat transfer characteristics of spiral wall with internal rib in a supercriticalsliding-pressure operation once-through boiler

TANG Renhu, YIN Fei, WANG Haijun, CHEN Tingkuan

Frontiers in Energy 2007, Volume 1, Issue 3,   Pages 300-304 doi: 10.1007/s11708-007-0043-5

Abstract: Within the pressure range of 9–28 MPa, mass velocity range of 600–1 200 kg/(m · s), and heat flux rangeHowever, the heat transfer enhancement decreased near the critical pressure.At supercritical pressure, the temperature difference between the wall and the fluid increased near theincrease of wall temperature was less than that of departure from nucleate boiling at sub-critical pressureWhen pressure is closer to the critical pressure, the temperature difference between the wall and the

Keywords： m ·     diameter     critical pressure     sub-critical pressure     maximum    

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Study on water pressure characteristics of Xiamen Xiang’an Subsea Tunnel

Cheng Zhengming

Strategic Study of CAE 2012, Volume 14, Issue 11,   Pages 29-35

Abstract:

The reasonable water pressure upon lining determination is the key toThe analytic method calculation formula of outside pressure upon lining of circular subsea tunnel wasResults of model tests showed that under the condition of fully closed, the pressure on lining couldnot be reduced; the water pressure would significantly reduce if the water of the tunnel was drained,Lining external water pressure formula under limited drainage was established, and it was also verified

Keywords： subsea tunnel     lining     water pressure     model test     limited drainage     reduction    

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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 comparison indicates that the homogeneous flow model cannot predict the twophase pressure drop wellChisholm,Lee and Lee,Mishima,Qu and Mudawar , separated flow model also failed to predict the twophase pressurefor C which decreased with the decreasing mass flux .A new correlation to predict the twophase flow pressure.It includes the effect of the hydraulic diameter and the effect of mass flux on the twophase flow pressure

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

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Simplified analytical solution for free vibration characteristics of Hardfill dam

XIAO Wei, HE Yunlong, ZHANG Yanfeng

Frontiers of Structural and Civil Engineering 2008, Volume 2, Issue 3,   Pages 219-225 doi: 10.1007/s11709-008-0037-3

Abstract: one-dimensional shear wedge theory, in which the influences of the upstream concrete face and hydrodynamic pressureThen the applicability and accuracy of shear wedge method to analyze free vibration characteristics of

Keywords： upstream concrete     hydrodynamic pressure     vibration     one-dimensional     applicability    

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Combustion characteristics of SI engine fueled with methanol-gasoline blends during cold start

SONG Ruizhi, LIU Shenghua, LIANG Xiaoqiang, Tiegang H U

Frontiers in Energy 2008, Volume 2, Issue 4,   Pages 395-400 doi: 10.1007/s11708-008-0081-7

Abstract: injection (PFI) engine fueled with methanol-gasoline blends was used to study combustion and emission characteristicsCylinder pressure analysis indicates that engine combustion is improved when methanol is added to gasolineflame developing period and the rapid combustion period are shortened, and the indicated mean effective pressure

Keywords： combustion     3-cylinder     indicated     Cylinder pressure     emission    

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Monitoring and analysis to shock in water aboutunderwater drilling blasting

Ke Songlin,Li Linna,Si Jianfeng,Zhong Dongwang

Strategic Study of CAE 2014, Volume 16, Issue 11,   Pages 103-106

Abstract: By field monitoring, the pressure of shock in water for different distances is attained, the major parameter, such as pressure amplitude and positive action time, and the propagation attenuation rule of shock

Keywords： Underwater drilling blasting     Shock wave in water     Pressure characteristics    

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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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Flow-Induced Instabilities in Pump-Turbines in China

Zhigang Zuo,Shuhong Liu

Engineering 2017, Volume 3, Issue 4,   Pages 504-511 doi: 10.1016/J.ENG.2017.04.010

Abstract: scientists working on pump-turbines, this paper summarizes the hydraulic instabilities and performance characteristics

Keywords： Pump-turbines     Flow-induced instability     Pressure fluctuations     S-shaped characteristics     Positive slopes    

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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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Title Author Date Type Operation

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

Yan GU, Yonglin JU

Journal Article

Spray characteristics of high-pressure swirl injector fueled with alcohol

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

Journal Article

An investigation into the heat transfer characteristics of spiral wall with internal rib in a supercriticalsliding-pressure operation once-through boiler

TANG Renhu, YIN Fei, WANG Haijun, CHEN Tingkuan

Journal Article

Study on water pressure characteristics of Xiamen Xiang’an Subsea Tunnel

Cheng Zhengming

Journal Article

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

Zhang Binglei,Xu Jinliang and Xiao Zejun

Journal Article

Simplified analytical solution for free vibration characteristics of Hardfill dam

XIAO Wei, HE Yunlong, ZHANG Yanfeng

Journal Article

Combustion characteristics of SI engine fueled with methanol-gasoline blends during cold start

SONG Ruizhi, LIU Shenghua, LIANG Xiaoqiang, Tiegang H U

Journal Article

Monitoring and analysis to shock in water aboutunderwater drilling blasting

Ke Songlin,Li Linna,Si Jianfeng,Zhong Dongwang

Journal Article

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

Flow-Induced Instabilities in Pump-Turbines in China

Zhigang Zuo,Shuhong Liu

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