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Nonlinear programming control using differential aerodynamic drag for CubeSat formation flying Article

Sheng-chao DENG, Tao MENG, Zhong-he JIN

Frontiers of Information Technology & Electronic Engineering 2017, Volume 18, Issue 7,   Pages 867-881 doi: 10.1631/FITEE.1500493

Abstract: Atmospheric drag is one of the space environmental forces that low-orbit satellites can use to realizepaper presents an integrated control strategy to achieve the desired in-track formation through the atmosphericdrag difference, which will be used on ZJUCubeSat, the next pico-satellite of Zhejiang University andAtmospheric drag cannot be ignored and has a major impact on both attitude and orbit of the satellite

Keywords： QB50     ZJUCubeSat     Atmospheric drag     Formation flying    

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Effect of adjusted mesoscale drag model on flue gas desulfurization in powder-particle spouted beds

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 6,   Pages 909-920 doi: 10.1007/s11705-021-2100-8

Abstract: The obtained results revealed that the spout morphology simulated by the adjusted mesoscale drag modelIn addition, more thorough gas radial mixing was achieved using the adjusted mesoscale drag model.The mass fraction of water in the gas mixture at the outlet determined by the heterogeneous drag modelwas 1.5 times higher than that obtained by the homogeneous drag model during the simulation of waterwas 75.03%, while the desulfurization efficiencies obtained by the Gidaspow and adjusted mesoscale drag

Keywords： adjusted mesoscale drag model     particle image velocimetry     water vaporization     desulfurization reaction    

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Development and application of a random walk model of atmospheric diffusion in the emergency response

CHI Bing, LI Hong, FANG Dong

Frontiers in Energy 2007, Volume 1, Issue 2,   Pages 195-201 doi: 10.1007/s11708-007-0025-7

Abstract: Random characteristics of atmospheric diffusion itself was described, a random walk model of atmosphericThe random walk model for atmospheric diffusion can simulate the atmospheric diffusion in case of nuclearaccidents, and provide more actual information for early emergency and consequence assessment as one of the atmospheric

Keywords： RODOS     concentration prediction     information     nuclear     RIMPUFF    

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Lateral Vibration Analyses of Flying Vehicle under Thrust and Drag

Song Jian

Strategic Study of CAE 2000, Volume 2, Issue 10,   Pages 63-72

Abstract:

In this paper, the influence of thrust and air drag on rocket lateral vibration is studied, and thefrequency reduction under the thrust and drag is analyzed.accelerating and passive decelerating parts of trajectory as well as the cruise flight when thrust and drag

Keywords： aircraft     rocket     lateral vibration     thrust and drag     vibration mode and frequency    

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Is atmospheric oxidation capacity better in indicating tropospheric O formation?

Frontiers of Environmental Science & Engineering 2022, Volume 16, Issue 5, doi: 10.1007/s11783-022-1544-5

Abstract:

● This study summarizes and evaluates different approaches that indicate O3 formation.

Keywords： O3     AOC     O3 formation regime    

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A new prediction method of industrial atmospheric pollutant emission intensity based on pollutant emission

Frontiers of Environmental Science & Engineering 2023, Volume 17, Issue 1, doi: 10.1007/s11783-023-1608-1

Abstract:

● Established a quantification method of pollutant emission standard.

Keywords： Industrial atmospheric pollutants     Pollutant emission standards     Quantitative method     Machine learning    

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A review of atmospheric mercury emissions, pollution and control in China

Shuxiao WANG,Lei ZHANG,Long WANG,Qingru WU,Fengyang WANG,Jiming HAO

Frontiers of Environmental Science & Engineering 2014, Volume 8, Issue 5,   Pages 631-649 doi: 10.1007/s11783-014-0673-x

Abstract: The current state of atmospheric mercury emissions, pollution and control in China is comprehensivelyThe atmospheric mercury concentration in China is about 2–10 times the background level of North Hemisphere

Keywords： atmospheric mercury     emissions     pollution     control     China    

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The Chinese polar atmospheric sciences observation engineering system

Lu LongHua,Bian Lingen

Strategic Study of CAE 2012, Volume 14, Issue 9,   Pages 72-84

Abstract: Chinese polar atmospheric science observation system is gradually formed including the meteorological

Keywords： Antarctic     Arctic     atmospheric sciences     observation engineering    

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Variation characteristics of atmospheric methane and carbon dioxide in summertime at a coastal site in

Frontiers of Environmental Science & Engineering 2022, Volume 16, Issue 11, doi: 10.1007/s11783-022-1574-z

Abstract:

● Diurnal patterns of CH4 and CO2 are clearly extracted using EEMD.

Keywords： Methane     Carbon dioxide     Diurnal pattern     Ensemble empirical mode decomposition     South China Sea     Sea breeze    

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Development of an analytical model to estimate the churning losses in high-speed axial piston pumps

Frontiers of Mechanical Engineering 2022, Volume 17, Issue 2, doi: 10.1007/s11465-021-0671-1

Abstract: of high-speed axial piston pumps, but accurate analytical models are not available to estimate the dragIn this paper, we derive the analytical expressions of the drag torque acting on the key rotating partsThe calculated drag torque agrees well with the experimental data over a wide range of rotational speeds

Keywords： axial piston pump     rotating parts     high rotational speed     churning losses     drag torque    

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Thermodynamic analysis of steam reforming of glycerol for hydrogen production at atmospheric pressure

Ammaru Ismaila, Xueli Chen, Xin Gao, Xiaolei Fan

Frontiers of Chemical Science and Engineering 2021, Volume 15, Issue 1,   Pages 60-71 doi: 10.1007/s11705-020-1975-0

Abstract: and CH in the gas phase and determination of the carbon free region in SRG under the conditions at atmosphericreaction conditions which favoured SRG for H production with minimum coke formation were identifies as: atmosphericThe influence of using the inert carrier gas (i.e., N ) in SRG was studied as well at atmospheric pressure

Keywords： steam reforming of glycerol     H2     N2     carbon deposition     thermodynamic analysis     Gibbs free energy minimisation    

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Temporal evolution of charged and neutral nanoparticle concentrations during atmospheric new particle

E. Rohan Jayaratne, Buddhi Pushpawela, Lidia Morawska

Frontiers of Environmental Science & Engineering 2016, Volume 10, Issue 5, doi: 10.1007/s11783-016-0862-x

Abstract: Over 100 new particle formation events were studied. In 50 events, charged and neutral particles were not formed at the same time. In 42 of these events the charged particles formed before the neutral particles. Their subsequent growth rates were not determined by the particle charge. The result suggests that ion induced nucleation plays a role in particle formation. Time series of nanoparticle number concentration during new particle formation (NPF) events in the urban environment of Brisbane, Australia, showed that the formation of charged particles often occurred before that of neutral particles. We monitored 241 days during the calendar year 2012 over which NPF events were observed on 108 days. We studied the times at which the charged and neutral particle concentrations in the size range 1.8–3.2 nm reached their peak values and found that they were clearly different in 50 events with the peak neutral particle concentration lagging behind the charged particle concentration during 42 of these events with a mean time lag of 24±12 min. While the charged particles were more likely to form before the neutral particles, once formed, the growth rate of the particles did not depend on their charge. While ion-induced nucleation is not the dominant mechanism of NPF in the atmosphere, our observations suggest that the presence of ions in the atmosphere plays a role that cannot be ignored.

Keywords： Charged particles     Cluster ions     Secondary particles     Environmental pollution    

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Genomic and metabolomic analysis of with enhanced poly--glutamic acid production through atmospheric

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 12,   Pages 1751-1760 doi: 10.1007/s11705-022-2211-x

Abstract: Atmospheric and room temperature plasma was applied in this study to conduct mutation breeding of

Keywords： ARTP mutagenesis     Bacillus licheniformis     poly-γ-glutamic acid     metabolomics    

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A 14-year measurement of toxic elements in atmospheric particulates in Hong Kong from 1995 to 2008

Wei NIE,Tao WANG,Aijun DING,Xuehua ZHOU,Wenxing WANG

Frontiers of Environmental Science & Engineering 2014, Volume 8, Issue 4,   Pages 553-560 doi: 10.1007/s11783-013-0523-2

Abstract: Toxic elements in the atmosphere can enter and accumulate in the human body, seriously impacting human health. In this study, we analyzed a 14-year (1995–2008) measurement of three toxic elements (As, Cd and Cr) in PM in Hong Kong, China. The pollution of these toxic elements in Hong Kong was not serious. The trend analysis showed that As and Cr in PM increased at a statistically significant level ( <0.05) during the 14-year period, while the Cd in PM did not change significantly. Typical seasonal variations were observed for all three toxic elements, largely in relation to the Asian monsoon. Hourly 10-day backward trajectories were computed and categorised into four groups. The continental air masses showed much higher concentrations of the three toxic elements than the marine air masses. The abundances of As and Cd in the PM were much higher in the continental air masses than those in the marine air masses, while the abundances of Cr showed an opposite pattern. The trends of the three toxic elements in East China’s air mass were consistent with those in the overall data set of Hong Kong. Examination of the toxic element data recorded at urban sites and a roadside site also indicated a large contribution of external air masses to particulate As and Cd in Hong Kong. These results suggest that the long-range transport from the mainland of China is the dominant contributor to particulate As and Cd, while both local and long-distance sources determine the particulate Cr in Hong Kong.

Keywords： toxic elements     increasing trends     seasonal variations     air masses     long-distance sources    

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Engineering Construction of Atmospheric Science

Wen Kegang,Li Huang,Li Zechun,Chen Xinqiang

Strategic Study of CAE 2000, Volume 2, Issue 5,   Pages 72-76

Abstract:

A brief account of the meaning of atmospheric science and its importance to human*s existence andAtmospheric science brings benefit to mankind through the development and use of atmospheric informationBasic thinking for the next three decades about atmospheric science engineering construction and someprojects to be constructed and some main measures are initially envisaged .Key projects include automatic atmospheric

Keywords： atmospheric science     engineering construction     review     idea    

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Title Author Date Type Operation

Nonlinear programming control using differential aerodynamic drag for CubeSat formation flying

Sheng-chao DENG, Tao MENG, Zhong-he JIN

Journal Article

Effect of adjusted mesoscale drag model on flue gas desulfurization in powder-particle spouted beds

Journal Article

Development and application of a random walk model of atmospheric diffusion in the emergency response

CHI Bing, LI Hong, FANG Dong

Journal Article

Lateral Vibration Analyses of Flying Vehicle under Thrust and Drag

Song Jian

Journal Article

Is atmospheric oxidation capacity better in indicating tropospheric O formation?

Journal Article

A new prediction method of industrial atmospheric pollutant emission intensity based on pollutant emission

Journal Article

A review of atmospheric mercury emissions, pollution and control in China

Shuxiao WANG,Lei ZHANG,Long WANG,Qingru WU,Fengyang WANG,Jiming HAO

Journal Article

The Chinese polar atmospheric sciences observation engineering system

Lu LongHua,Bian Lingen

Journal Article

Variation characteristics of atmospheric methane and carbon dioxide in summertime at a coastal site in

Journal Article

Development of an analytical model to estimate the churning losses in high-speed axial piston pumps

Journal Article

Thermodynamic analysis of steam reforming of glycerol for hydrogen production at atmospheric pressure

Ammaru Ismaila, Xueli Chen, Xin Gao, Xiaolei Fan

Journal Article

Temporal evolution of charged and neutral nanoparticle concentrations during atmospheric new particle

E. Rohan Jayaratne, Buddhi Pushpawela, Lidia Morawska

Journal Article

Genomic and metabolomic analysis of with enhanced poly--glutamic acid production through atmospheric

Journal Article

A 14-year measurement of toxic elements in atmospheric particulates in Hong Kong from 1995 to 2008

Wei NIE,Tao WANG,Aijun DING,Xuehua ZHOU,Wenxing WANG

Journal Article

Engineering Construction of Atmospheric Science

Wen Kegang,Li Huang,Li Zechun,Chen Xinqiang

Journal Article