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Fuel variability effect on flickering frequency of diffusion flames

Jizhao LI, Yang ZHANG

Frontiers in Energy 2009, Volume 3, Issue 2,   Pages 134-140 doi: 10.1007/s11708-009-0034-9

Abstract: It is known that fuel variability of different gas suppliers may cause combustion instability in a gaspressure perturbations are both physical and chemical in nature, and thus can be influenced by changes in fuelThe intent of this study is to investigate the fuel variability on the flickering frequency of diffusionflames in the hope of understanding some of the fundamental aspects of fuel variability effect on thefrequency oscillation of flow and flame structures depended only weakly on the exit velocities of the fuel

Keywords： fuel variability     flickering frequency     diffusion flames     dynamics of combustion    

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Soil spatial variability impact on the behavior of a reinforced earth wall

Adam HAMROUNI, Daniel DIAS, Badreddine SBARTAI

Frontiers of Structural and Civil Engineering 2020, Volume 14, Issue 2,   Pages 518-531 doi: 10.1007/s11709-020-0611-x

Abstract: This article presents the soil spatial variability effect on the performance of a reinforced earth wallThe Monte Carlo simulation technique is used to obtain the deformation response variability of the reinforcedThe influences of the spatial variability response of the geotechnical system in terms of horizontalThe results obtained show that the spatial variability has an important influence on the facing horizontal

Keywords： reinforced earth wall     geosynthetic     random field     spatial variability     Monte Carlo simulation    

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Treatment, residual chlorine and season as factors affecting variability of trihalomethanes in small

Roberta DYCK,Geneviève COOL,Manuel RODRIGUEZ,Rehan SADIQ

Frontiers of Environmental Science & Engineering 2015, Volume 9, Issue 1,   Pages 171-179 doi: 10.1007/s11783-014-0750-1

Abstract: Seasonal variability in source water can lead to challenges for drinking water providers related to operationalThe objective of this study is to investigate seasonal variability of water quality in municipal smallThe seasonal variability was generally more pronounced in systems using chlorination plus additionalstudy with these data will be beneficial in finding determinants and indicators for both quantity and variability

Keywords： drinking water     residual chlorine     seasonal variability     small municipal systems     treatment technologies    

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Quantifying and mapping spatial variability of Shanghai household carbon footprints

Shangguang YANG,Chunlan WANG,Kevin LO,Mark WANG,Lin LIU

Frontiers in Energy 2015, Volume 9, Issue 1,   Pages 115-124 doi: 10.1007/s11708-015-0348-8

Abstract: Understanding the spatial variability of household carbon emissions is necessary for formulating sustainableThe findings reveal substantial spatial variability in household carbon emissions, especially in transport-related

Keywords： household carbon emissions     spatial variability     energy policy     Shanghai     China    

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Distribution and temporal variability of the solar resource at a site in south-east Norway

Muyiwa S. ADARAMOLA

Frontiers in Energy 2016, Volume 10, Issue 4,   Pages 375-381 doi: 10.1007/s11708-016-0426-6

Abstract: However, the variability of this resource has been the main barrier for solar energy development in mostThis paper investigated the distribution and variability of solar radiation using the a 10-year (2006

Keywords： coefficient of variation     global solar radiation     diffuse ratio     albedo     PV energy systems    

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Shallow foundation response variability due to soil and model parameter uncertainty

Prishati RAYCHOWDHURY,Sumit JINDAL

Frontiers of Structural and Civil Engineering 2014, Volume 8, Issue 3,   Pages 237-251 doi: 10.1007/s11709-014-0242-1

Abstract: Geotechnical uncertainties may play crucial role in response prediction of a structure with substantial soil-foundation-structure-interaction (SFSI) effects. Since the behavior of a soil-foundation system may significantly alter the response of the structure supported by it, and consequently several design decisions, it is extremely important to identify and characterize the relevant parameters. Moreover, the modeling approach and the parameters required for the modeling are also critically important for the response prediction. The present work intends to investigate the effect of soil and model parameter uncertainty on the response of shallow foundation-structure systems resting on dry dense sand. The SFSI is modeled using a beam-on-nonlinear-winkler-foundation (BNWF) concept, where soil beneath the foundation is assumed to be an assembly of discrete, nonlinear elements composed of springs, dashpots and gap elements. The sensitivity of both soil and model input parameters on shallow foundation responses are investigated using first-order second-moment (FOSM) analysis and Monte Carlo simulation through Latin hypercube sampling technique. It has been observed that the degree of accuracy in predicting the responses of the shallow foundation is highly sensitive soil parameters, such as friction angle, Poisson’s ratio and shear modulus, rather than model parameters, such as stiffness intensity ratio and spring spacing; indicating the importance of proper characterization of soil parameters for reliable soil-foundation response analysis.

Keywords： shallow foun dation     sensitivity analysis     centrifuge data     first-order-second-moment (FOSM) method     parameter uncertainty    

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Quantification of emission variability for off-road equipment in China based on real-world measurements

Frontiers of Environmental Science & Engineering 2022, Volume 16, Issue 2, doi: 10.1007/s11783-021-1455-x

Abstract:

• Emissions from 53 in-use diesel-fueled off-road equipment were measured.

Keywords： Off-road equipment     Portable emission measurement system (PEMS)     Real-world emissions     Diesel engine    

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Variability of waste copper slag concrete and its effect on the seismic safety of reinforced concrete

Frontiers of Structural and Civil Engineering 2022, Volume 16, Issue 1,   Pages 117-130 doi: 10.1007/s11709-021-0788-7

Abstract: In particular, the variability in the strength properties of waste copper slag concrete, which is required

Keywords： waste copper slag     quantification of variability     goodness-of-fit test     seismic risk assessment     PSDM    

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The effect of texture and irrigation on the soil moisture vertical-temporal variability in an urban artificial

Xiaofeng ZHANG,Xu ZHANG,Guanghe LI

Frontiers of Environmental Science & Engineering 2015, Volume 9, Issue 2,   Pages 269-278 doi: 10.1007/s11783-014-0672-y

Abstract: Soil moisture variability in natural landscapes has been widely studied; however, less attention hasbeen paid to its variability in the urban landscapes with respect to the possible influence of texture

Keywords： moisture vertical distribution     moisture temporal variation     texture stratification     irrigation     meteorological forcing     urban landscape    

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Combustion and emissions of RP-3 jet fuel and diesel fuel in a single-cylinder diesel engine

Frontiers in Energy 2023, Volume 17, Issue 5,   Pages 664-677 doi: 10.1007/s11708-021-0787-3

Abstract: diesel fuel in a single-cylinder compression ignition (CI) engine.In comparison to diesel fuel, RP-3 jet fuel shows a retarded heat release and lagged combustion phaserelease peak than diesel fuel under all testing conditions.(CD), and an earlier CA50 than diesel fuel.Compared with diesel fuel, the nitrogen oxides (NOx) emissions of RP-3 jet fuel are

Keywords： RP-3 jet fuel     diesel     engine     combustion     emissions    

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Impacts of methanol fuel on vehicular emissions: A review

Frontiers of Environmental Science & Engineering 2022, Volume 16, Issue 9, doi: 10.1007/s11783-022-1553-4

Abstract:

● Methanol effectively reduces CO, HC, CO2, PM, and PN emissions of gasoline vehicles.

Keywords： Methanol fuel     Vehicular emission     Emission reduction     Cleaner fuel     Gasoline substitute    

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Variability and vulnerability of carbon pools in Southern Ocean and western Arctic Ocean and their exploratory

Chen Liqi

Strategic Study of CAE 2009, Volume 11, Issue 10,   Pages 79-85

Abstract: distribution of surface pCO2 and sea-air fluxes of CO2 were analyzed to understand variability

Keywords： carbon cycle     variability and vulnerability     Southern Ocean     Arctic Ocean     exploring engineering technology    

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Failure mode investigation of fuel cell for vehicle application

Zhongjun HOU, Renfang WANG, Keyong WANG, Weiyu SHI, Danming XING, Hongchun JIANG

Frontiers in Energy 2017, Volume 11, Issue 3,   Pages 318-325 doi: 10.1007/s11708-017-0488-0

Abstract: The durability of proton exchange membrane fuel cells (PEMFCs) has been posing a key technical challengeto commercial spread of fuel cell vehicles (FCVs).To improve the durability, it is necessary to optimize the fuel cell system (FCS) design against failureThe fuel cell durability research method at FCS scale was exhibited, and the failure modes of fuel cellare typical failure modes of fuel cells.

Keywords： proton exchange membrane fuel cell (PEMFC)     fuel cell system (FCS)     durability     failure mode     fuel cell vehicle    

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Numerical investigation of the effects of fuel spray type on the interaction of fuel spray and hot porous

ZHAO Zhiguo, XIE Maozhao

Frontiers in Energy 2008, Volume 2, Issue 1,   Pages 59-65 doi: 10.1007/s11708-008-0022-5

Abstract: The interaction between two types of fuel spray and a hot porous medium is studied numerically by usingComputational results on the interaction of two types of the fuel spray and the hot porous medium showthat the fuel spray can be split, which provides conditions for quick evaporation of fuel droplets andmixing of fuel vapor with air.that from solid cone spray, with the same initial kinetic energy of fuel droplets in both injection

Keywords： improved version     impingement     atomization     hollow     radius    

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Recent advances in cathode electrocatalysts for PEM fuel cells

Junliang ZHANG

Frontiers in Energy 2011, Volume 5, Issue 2,   Pages 137-148 doi: 10.1007/s11708-011-0153-y

Abstract: made in the past two decades in the development of the electrocatalysts for proton exchange membrane fuel

Keywords： proton exchange membrane fuel cells (PEMFCs)     cathode electrocatalysts     platinum     oxygen reduction reaction    

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Title Author Date Type Operation

Fuel variability effect on flickering frequency of diffusion flames

Jizhao LI, Yang ZHANG

Journal Article

Soil spatial variability impact on the behavior of a reinforced earth wall

Adam HAMROUNI, Daniel DIAS, Badreddine SBARTAI

Journal Article

Treatment, residual chlorine and season as factors affecting variability of trihalomethanes in small

Roberta DYCK,Geneviève COOL,Manuel RODRIGUEZ,Rehan SADIQ

Journal Article

Quantifying and mapping spatial variability of Shanghai household carbon footprints

Shangguang YANG,Chunlan WANG,Kevin LO,Mark WANG,Lin LIU

Journal Article

Distribution and temporal variability of the solar resource at a site in south-east Norway

Muyiwa S. ADARAMOLA

Journal Article

Shallow foundation response variability due to soil and model parameter uncertainty

Prishati RAYCHOWDHURY,Sumit JINDAL

Journal Article

Quantification of emission variability for off-road equipment in China based on real-world measurements

Journal Article

Variability of waste copper slag concrete and its effect on the seismic safety of reinforced concrete

Journal Article

The effect of texture and irrigation on the soil moisture vertical-temporal variability in an urban artificial

Xiaofeng ZHANG,Xu ZHANG,Guanghe LI

Journal Article

Combustion and emissions of RP-3 jet fuel and diesel fuel in a single-cylinder diesel engine

Journal Article

Impacts of methanol fuel on vehicular emissions: A review

Journal Article

Variability and vulnerability of carbon pools in Southern Ocean and western Arctic Ocean and their exploratory

Chen Liqi

Journal Article

Failure mode investigation of fuel cell for vehicle application

Zhongjun HOU, Renfang WANG, Keyong WANG, Weiyu SHI, Danming XING, Hongchun JIANG

Journal Article

Numerical investigation of the effects of fuel spray type on the interaction of fuel spray and hot porous

ZHAO Zhiguo, XIE Maozhao

Journal Article

Recent advances in cathode electrocatalysts for PEM fuel cells

Junliang ZHANG

Journal Article