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Pre-chamber turbulent jet ignition of methane/air mixtures with multiple orifices in a large bore constantvolume chamber: effect of air-fuel equivalence ratio and pre-mixed pressure

Xiang LI, Wenzheng ZHANG, Zhong HUANG, Dehao JU, Li HUANG, Mingzhi FENG, Xingcai LU, Zhen HUANG

Frontiers in Energy 2019, Volume 13, Issue 3,   Pages 483-493 doi: 10.1007/s11708-019-0631-1

Abstract: However, natural gas is relatively difficult to be ignited in a large bore combustion chamber.A combustion enhancement technique called pre-chamber turbulent jet ignition (TJI) can permit combustionTo investigate the effect of air-fuel equivalence ratio and pre-mixed pressure on pre-chamber TJI ofsimulations were implemented to study the discharge of hot turbulent jets from six orifices of the pre-chamberof the spark plug, resulting in the inhomogeneous distribution of combustion in the constant volume chamber

Keywords: marine engine     natural gas     methane     turbulent jet ignition (TJI)     pre-chamber    

The Vibration Testing Analysis of Chamber & Deep-hole Pre-splitting Blasting

Shen Zhenyu,Wang Xuguang,Yu Yalun,Liu Honggang

Strategic Study of CAE 2006, Volume 8, Issue 3,   Pages 70-74

Abstract:

The vibration testing analysis of blasting in Tai-Chang freeway show that it is chamber & deep-holepre-splitting blasting that can strikingly drop the seismic effect of chamber blasting, so it effectivelyThe improved technique of chamber blasting is beneficial to extending its scope of application so that

Keywords: chamber blasting     deep-hole pre-splitting blasting     blasting vibration     vibration testing analysis    

Development of a fan-stirred constant volume combustion chamber and turbulence measurement with PIV

Frontiers in Energy 2022, Volume 16, Issue 6,   Pages 973-987 doi: 10.1007/s11708-021-0762-z

Abstract: A fan-stirred combustion chamber is deve-loped for spherically expanding flames, with P and chamber while the inertialThis indicates that the newly built turbulent combustion chamber is reliable for further experimental

Keywords: fan-stirred combustion chamber     turbulence characteristics     particle image velocimetry (PIV)     methanol    

Atmospheric heterogeneous reaction of chlorobenzene on mineral -FeO particulates: a chamber experiment

Frontiers of Environmental Science & Engineering 2023, Volume 17, Issue 11, doi: 10.1007/s11783-023-1734-9

Abstract:

● Photochemical conversion of chlorobenzene (CB) on α-Fe2O3 was evaluated.

Keywords: Photochemical conversion     Chlorobenzene     α-Fe2O3     PCDD/Fs     Mineral particulate    

A novel flow electrode capacitive deionization device with spindle-shaped desalting chamber

Frontiers of Environmental Science & Engineering 2023, Volume 18, Issue 4, doi: 10.1007/s11783-024-1800-y

Abstract:

● A spindle-shaped influent chamber was designed and equipped in

Keywords: Spindle-shaped chamber     Desalination performance     Flow electrode capacitive deionization    

Nonlinear analysis of pre-tensioned glass wall facade by stability function with initial imperfection

Siu-Lai CHAN, Yaopeng LIU, Andy LEE,

Frontiers of Structural and Civil Engineering 2010, Volume 4, Issue 3,   Pages 376-382 doi: 10.1007/s11709-010-0086-2

Abstract: Pre-tensioned high strength trusses using alloy steel bar are widely used as glass wall supporting systemsvarious effects, such as support settlement due to live loads and material creep, temperature change, pre-tension

Keywords: tension system     glass wall     nonlinear analysis     pre-tensioning     second-order analysis    

A pre-compensation method of the systematic contouring error for repetitive command paths

D. L. ZHANG,Y. H. CHEN,Y. P. CHEN

Frontiers of Mechanical Engineering 2015, Volume 10, Issue 4,   Pages 367-372 doi: 10.1007/s11465-015-0367-5

Abstract:

For a repetitive command path, pre-compensating the contouring error by modifying the command pathTo obtain the pre-compensation value with better accuracy, this paper proposes the use of a back propagationFurthermore, by using the extracted function, the contouring error can be easily pre-compensated.

Keywords: contouring error     pre-compensation     motion control system     back propagation (BP) neural network    

Experimental and parametrical investigation of pre-stressed ultrahigh-performance fiber-reinforced concrete

Frontiers of Structural and Civil Engineering 2023, Volume 17, Issue 3,   Pages 411-428 doi: 10.1007/s11709-023-0928-3

Abstract: In this study, ultrahigh-performance fiber-reinforced concrete (UHPFRC) used in a type B70 concrete sleeper is investigated experimentally and parametrically. The main parameters investigated are the steel fiber volume fractions (0%, 0.5%, 1%, and 1.5%). Under European standards, 35 UHPFRC sleepers are subjected to static bending tests at the center and rail seat sections, and the screw on the fastening system is pulled out. The first cracking load, failure load, failure mode, crack propagation, load–deflection curve, load–crack width, and failure load from these tests are measured and compared with those of a control sleeper manufactured using normal concrete C50. The accuracy of the parametric study is verified experimentally. Subsequently, the results of the study are applied to UHPFRC sleepers with different concrete volumes to investigate the effects of the properties of UHPFRC on their performance. Experimental and parametric study results show that the behavior of UHPFRC sleepers improves significantly when the amount of steel fiber in the mix is increased. Sleepers manufactured using UHPFRC with a steel fiber volume fraction of 1% and a concrete volume less than 25% that of standard sleeper B70 can be used under the same loads and requirements, which contributes positively to the cost and surrounding environment.

Keywords: pre-stressed concrete sleeper     ultrahigh performance fiber-reinforced concrete     pull-out test     static    

Construction procedure study of ship chamber of Three Gorges Project ship lift

Zeng Ming

Strategic Study of CAE 2013, Volume 15, Issue 9,   Pages 40-44

Abstract: the deformation of pillar and built-in structure parts, the construction order of ship compartments chamberAccording to the simulation results of pillar structure, the impact of the ship chamber and balance weightReasonable ship lift ship compartments chamber construction procedure and construction schedule arrangementEngineering practice proved that chamber construction procedures of Three Gorges Project lift ship establishedin this paper are reasonable and scientific which ensure the smooth construction of ship chamber of

Keywords: construction procedure     ship chamber     ship lift     Three Gorges Project    

Investigation into viability of using two-stage (pre-placed aggregate) concrete in Irish setting

John O’MALLEY, Hakim S. ABDELGADER,

Frontiers of Structural and Civil Engineering 2010, Volume 4, Issue 1,   Pages 127-132 doi: 10.1007/s11709-010-0007-4

Abstract: Two-stage (pre-placed aggregate) concrete (TSC) consists of coarse aggregate, which is first deposited

Keywords: grout     pre-placed     concrete     two-stage concrete (TSC)    

Optimization of denitrifying phosphorus removal in a pre-denitrification anaerobic/anoxic/post-aeration+ nitrification sequence batch reactor (pre-A

Weihua Zhao, Meixiang Wang, Jianwei Li, Yu Huang, Baikun Li, Cong Pan, Xiyao Li, Yongzhen Peng

Frontiers of Environmental Science & Engineering 2018, Volume 12, Issue 5, doi: 10.1007/s11783-018-1084-1

Abstract:

A novel two sludge pre-A2NSBR system was developed.

Keywords: Denitrifying phosphorus removal     C/N ratio     Nitrate recycling     Carbon source type     Biological nutrient removal     Pre-A    

Evaluation of the static and dynamic structural performance of segmental pre-stressed concrete box girder

Ali Fadhil NASER, Zonglin WANG

Frontiers of Structural and Civil Engineering 2013, Volume 7, Issue 2,   Pages 164-177 doi: 10.1007/s11709-013-0196-8

Abstract: side spans by sticking the steel plates, strengthening the whole bridge structure by using external pre-stressing

Keywords: structural performance     steel plates     external pre-stressing     cracks     grouting method     static    

Effect of heat transfer space non-uniformity of combustion chamber components on in-cylinder heat transfer

Jizu LV, Minli BAI, Long ZHOU, Jian ZHOU,

Frontiers in Energy 2010, Volume 4, Issue 3,   Pages 392-401 doi: 10.1007/s11708-009-0066-1

Abstract: Combustion chamber components (cylinder head-cylinder liner-piston assembly-oil film) were treated ascoupled three-dimensional calculation model for the in-cylinder working process and the combustion chamberwhich adopts the coupled three-dimensional simulation of in-cylinder working process and the combustion chamberThe results show that the effect of wall temperature space non-uniform distribution of combustion chamberTherefore, it can be concluded that wall temperature space non-uniform distribution of combustion chamber

Keywords: heat transfer     space non-uniformity     soot emission     in-cylinder     diesel    

Techno-economic comparison of three technologies for pre-combustion CO

Simon Roussanaly, Monika Vitvarova, Rahul Anantharaman, David Berstad, Brede Hagen, Jana Jakobsen, Vaclav Novotny, Geir Skaugen

Frontiers of Chemical Science and Engineering 2020, Volume 14, Issue 3,   Pages 436-452 doi: 10.1007/s11705-019-1870-8

Abstract: This paper compares the techno-economic performances of three technologies for CO capture from a lignite-based IGCC power plant located in the Czech Republic: (1) Physical absorption with a Rectisol-based process; (2) Polymeric CO -selective membrane-based capture; (3) Low-temperature capture. The evaluations show that the IGCC plant with CO capture leads to costs of electricity between 91 and 120 €·MWh , depending on the capture technology employed, compared to 65 €·MWh for the power plant without capture. This results in CO avoidance costs ranging from 42 to 84 €· , mainly linked to the losses in net power output. From both energy and cost points of view, the low-temperature and Rectisol based CO capture processes are the most efficient capture technologies. Furthermore, partial CO capture appears as a good mean to ensure early implementation due to the limited increase in CO avoidance cost when considering partial capture. To go beyond the two specific CO -selective membranes considered, a cost/membrane property map for CO -selective membranes was developed. This map emphasise the need to develop high performance membrane to compete with solvent technology. Finally, the cost of the whole CCS chain was estimated at 54 €· once pipeline transport and storage are taken into consideration.

Keywords: carbon capture and storage (CCS)     techno-economic comparison     pre-combustion capture     physical solvent     low-temperature    

Hybrid flexural components: Testing pre-stressed steel and GFRP bars together as reinforcement for flexural

Mohammed FARUQI, Oved I. MATA, Francisco AGUINIGA

Frontiers of Structural and Civil Engineering 2018, Volume 12, Issue 3,   Pages 352-360 doi: 10.1007/s11709-017-0453-3

Abstract:

Concrete members historically have used either pre-stressed steel or steel bars.However, the flexure behavior of a hybrid system reinforced by the combination of pre-stressed steelTwo slabs of 100 and 150-millimeter thickness, with a span of 2.1 m reinforced with both pre-stressingThe theoretical slabs were either reinforced with pre-stressed steel or GFRP rebars, or a hybrid system

Keywords: Partial pre-stressing     composite structures     GFRP bars    

Title Author Date Type Operation

Pre-chamber turbulent jet ignition of methane/air mixtures with multiple orifices in a large bore constantvolume chamber: effect of air-fuel equivalence ratio and pre-mixed pressure

Xiang LI, Wenzheng ZHANG, Zhong HUANG, Dehao JU, Li HUANG, Mingzhi FENG, Xingcai LU, Zhen HUANG

Journal Article

The Vibration Testing Analysis of Chamber & Deep-hole Pre-splitting Blasting

Shen Zhenyu,Wang Xuguang,Yu Yalun,Liu Honggang

Journal Article

Development of a fan-stirred constant volume combustion chamber and turbulence measurement with PIV

Journal Article

Atmospheric heterogeneous reaction of chlorobenzene on mineral -FeO particulates: a chamber experiment

Journal Article

A novel flow electrode capacitive deionization device with spindle-shaped desalting chamber

Journal Article

Nonlinear analysis of pre-tensioned glass wall facade by stability function with initial imperfection

Siu-Lai CHAN, Yaopeng LIU, Andy LEE,

Journal Article

A pre-compensation method of the systematic contouring error for repetitive command paths

D. L. ZHANG,Y. H. CHEN,Y. P. CHEN

Journal Article

Experimental and parametrical investigation of pre-stressed ultrahigh-performance fiber-reinforced concrete

Journal Article

Construction procedure study of ship chamber of Three Gorges Project ship lift

Zeng Ming

Journal Article

Investigation into viability of using two-stage (pre-placed aggregate) concrete in Irish setting

John O’MALLEY, Hakim S. ABDELGADER,

Journal Article

Optimization of denitrifying phosphorus removal in a pre-denitrification anaerobic/anoxic/post-aeration+ nitrification sequence batch reactor (pre-A

Weihua Zhao, Meixiang Wang, Jianwei Li, Yu Huang, Baikun Li, Cong Pan, Xiyao Li, Yongzhen Peng

Journal Article

Evaluation of the static and dynamic structural performance of segmental pre-stressed concrete box girder

Ali Fadhil NASER, Zonglin WANG

Journal Article

Effect of heat transfer space non-uniformity of combustion chamber components on in-cylinder heat transfer

Jizu LV, Minli BAI, Long ZHOU, Jian ZHOU,

Journal Article

Techno-economic comparison of three technologies for pre-combustion CO

Simon Roussanaly, Monika Vitvarova, Rahul Anantharaman, David Berstad, Brede Hagen, Jana Jakobsen, Vaclav Novotny, Geir Skaugen

Journal Article

Hybrid flexural components: Testing pre-stressed steel and GFRP bars together as reinforcement for flexural

Mohammed FARUQI, Oved I. MATA, Francisco AGUINIGA

Journal Article