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Synchronous observation of rising soluble bubble through quiescent solution

Yifu ZHANG , Shuai TIAN , Weizhong LI , Yongchen SONG ,

Frontiers in Energy 2009, Volume 3, Issue 3,   Pages 307-312 doi: 10.1007/s11708-009-0028-7

Abstract: An experimental method using computer image processing technology (CIPT) was proposed to observe and investigate the velocity, deformation, heat and mass transfer, etc. of a rising soluble gas (CO) bubble through a quiescent hot water. A model was set up to describe the behavior of the bubble in a visual experimental system in which a high-speed camera rose instantaneously with the movement of the bubble. A series of trajectory videos about the bubble were recorded by a computer linked to the camera. The trajectory, volume changes and rate of mass transfer of the bubble were obtained by the CIPT. It is found that the single bubble follows a rolling trajectory at the initial stage when there is mass transfer. With the volume decreasing, the disturbed behavior of the bubble becomes tempered. When the rising velocity of the bubble reaches the maximum, the velocity is nearly at a constant. The experimental and analysis results show that this method is useful for the research on the mass transfer and the movement of rising bubbles in liquid.

Keywords： soluble bubble     mass transfer     synchronous observation     computer image processing    

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Research Progress of Marine Scientific Equipment and Development Recommendations in China

Song Xiancang, Du Junfeng, Wang Shuqing, Li Huajun

Strategic Study of CAE 2020, Volume 22, Issue 6,   Pages 76-83 doi: 10.15302/J-SSCAE-2020.06.010

Abstract: addition, it provides reviews on the state-of-the-art techniques associated with the marine scientific observationplatforms, namely air–sea interface observation platform, mobile underwater observation platform, and seafloor observation network system, in the countries that are believed to lead the field, andthe marine remote-sensing satellites, marine research ships, deep-diving submersibles, and seafloor observation

Keywords： marine scientific equipment     deep-sea observation platform     air–sea interface observation     mobile underwaterobservation     seafloor observation network     equipment development    

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Modeling and control of a permanent magnet synchronous generator dedicated to standalone wind energy

Louar FATEH,Ouari AHMED,Omeiri AMAR,Djellad ABDELHAK,Bouras LAKHDAR

Frontiers in Energy 2016, Volume 10, Issue 2,   Pages 155-163 doi: 10.1007/s11708-016-0410-1

Abstract: To limit these inconveniences, certain manufacturers developed wind turbines based on synchronous machinesThe control of the permanent magnet synchronous generator (PMSG) can be affected with the implementation

Keywords： wind turbine     permanent magnet synchronous generator (PMSG)     converter     proportional-integral (PI)     control    

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General modeling and optimization technique for real-world earth observation satellite scheduling

Frontiers of Engineering Management   Pages 695-709 doi: 10.1007/s42524-023-0263-3

Abstract: Over the last two decades, many modeling and optimization techniques have been developed for earth observation

Keywords： earth observation satellite     scheduling     general technique     optimization algorithm     commercial constellation    

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Anti-erosion elastic coating design based on synchronous fluctuation principle

Guo Yuanjun,Xiao Hualin,Xu Daqing,Li Wenbin

Strategic Study of CAE 2008, Volume 10, Issue 9,   Pages 60-63

Abstract: The condition of realized synchronous fluctuation of elastic coating channel border with the perturbation

Keywords： erosion     boundary layer     elastic channel border     elastic coating     synchronous fluctuation    

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Equivalent circuit and characteristic simulation of a brushless electrically excited synchronous wind

Hao WANG, Fengge ZHANG, Tao GUAN, Siyang YU

Frontiers of Mechanical Engineering 2017, Volume 12, Issue 3,   Pages 420-426 doi: 10.1007/s11465-017-0439-9

Abstract:

A brushless electrically excited synchronous generator (BEESG) with a hybrid rotor is a novel electricallyexcited synchronous generator.

Keywords： wind power     brushless electrically excited synchronous generator     hybrid rotor     equivalent circuit    

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Robust nonlinear control via feedback linearization and Lyapunov theory for permanent magnet synchronous

Ridha CHEIKH, Arezki MENACER, L. CHRIFI-ALAOUI, Said DRID

Frontiers in Energy 2020, Volume 14, Issue 1,   Pages 180-191 doi: 10.1007/s11708-018-0537-3

Abstract: In this paper, the method for the nonlinear control design of a permanent magnet synchronous generator

Keywords： permanent magnet synchronous generator     wind energy conversion system     stochastic     differential geometric    

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Observation of black carbon aerosol in Beijing, 2003

LOU Shujuan, MAO Jietai, WANG Meihua

Frontiers of Environmental Science & Engineering 2007, Volume 1, Issue 3,   Pages 345-349 doi: 10.1007/s11783-007-0059-4

Abstract: The objective of this study was to determine the black carbon concentration in Beijing in 2003. The aerosol properties were measured using an Aethalometer and a tapered element oscillating microbalance (TEOM) on the roof of the Physics Building of Peking University (39.99º N, 116.31º E) from July to August 2003 and from November 2003 to January 2004. The average black carbon (BC) concentrations in the summer and winter were 8.80 and 11.4 μg/m, respectively. During winter, two different cyclone cut offs were installed at the inlet of an aethalometer. The BC mass concentration in TSP, PM, and PM were obtained. The results indicated that in winter aerosol, 90% of BC exited in PM and 82.6% of BC exited in PM. The BC in PM accounted for 5.11% of the PM mass.

Keywords： carbon concentration     Beijing     tapered element     August     aethalometer    

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Optimization design of an interior permanent-magnet synchronous machine for a hybrid hydraulic excavator

Qi-huai CHEN,Qing-feng WANG,Tao WANG

Frontiers of Information Technology & Electronic Engineering 2015, Volume 16, Issue 11,   Pages 957-968 doi: 10.1631/FITEE.1500056

Abstract: In this paper, a design process for permanent-magnet synchronous machines (PMSMs) in a hybrid hydraulic

Keywords： Hybrid hydraulic excavator (HHE)     Finite element method (FEM)     Interior permanent-magnet (PM) motor     PM synchronous    

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Design and Implementation of Meteorological Observation System Projects

Zheng Guoguang

Strategic Study of CAE 2000, Volume 2, Issue 6,   Pages 21-26

Abstract:

The current situation of the meteorololgical observation in China and the development tendency ofthe meteorological observation technology are analyzed.The principal goals of the design and implementation of the meteorological observation system projectThe overall sketch and the main items of the “Meteorological Observation Automation Project (Phase

Keywords： atmosphere observation     observational automation     engineering design and implementation    

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Considerations on Promoting the Smooth Development of National Land Observation System

Guo Jianning

Strategic Study of CAE 2006, Volume 8, Issue 10,   Pages 47-53

Abstract:

Drawing on the experience of land observation cause in developed countries, the thesis has depictedthe work done in China´s land observation system.By doing so the smooth developments of national land observation system can be achieved.

Keywords： satellite application     remote sensing     land observation system     data sharing    

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Temperature Prediction for Sun Synchronous Satellite on Orbit

Wei Chuanfeng,Li Yunze,Yuan Lingshuang,Wang Jun,Ning Xianwen

Strategic Study of CAE 2005, Volume 7, Issue 2,   Pages 73-75

Abstract:

Temperature prediction on-line for sun synchronous satellite is very essential.

Keywords： sun synchronous satellite     on orbit     temperature predict    

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Development of Marine Equipment for Underwater Stereoscopic Observation

Ma Rui, Zhao Xiutao, Liu Cungen

Strategic Study of CAE 2020, Volume 22, Issue 6,   Pages 19-25 doi: 10.15302/J-SSCAE-2020.06.003

Abstract:

Establishing an underwater stereoscopic observation network to obtainThis study first analyzes the need and necessity of developing the underwater stereoscopic observationand presents the key breakthrough points of marine sensors which serve as the key link for underwater observationChina has made great progress in technologies regarding marine observation platforms, but it still lagsThe big data obtained from ocean observation does not match the actual demand, and the ocean sensors

Keywords： ocean observation     sea floor observatory network     underwater vehicle     underwater sensor    

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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: Formed by the manual weather station, automatic weather station and weather observation on the &ldquoChinese polar atmospheric science observation system is gradually formed including the meteorologicaloperational observation and short term investigation study.

Keywords： Antarctic     Arctic     atmospheric sciences     observation engineering    

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biochar and earthworm interactively affected CO and NO emissions in agricultural and forest soils: Observation

Frontiers of Environmental Science & Engineering 2022, Volume 16, Issue 3, doi: 10.1007/s11783-021-1473-8

Abstract:

• Earthworms increase CO2 and N2O emissions in agricultural and forest soil.

Keywords： Carbon sequestration     Forest soil     Cattle manure biochar     Greenhouse gas emissions     Soil fauna    

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Title Author Date Type Operation

Synchronous observation of rising soluble bubble through quiescent solution

Yifu ZHANG , Shuai TIAN , Weizhong LI , Yongchen SONG ,

Journal Article

Research Progress of Marine Scientific Equipment and Development Recommendations in China

Song Xiancang, Du Junfeng, Wang Shuqing, Li Huajun

Journal Article

Modeling and control of a permanent magnet synchronous generator dedicated to standalone wind energy

Louar FATEH,Ouari AHMED,Omeiri AMAR,Djellad ABDELHAK,Bouras LAKHDAR

Journal Article

General modeling and optimization technique for real-world earth observation satellite scheduling

Journal Article

Anti-erosion elastic coating design based on synchronous fluctuation principle

Guo Yuanjun,Xiao Hualin,Xu Daqing,Li Wenbin

Journal Article

Equivalent circuit and characteristic simulation of a brushless electrically excited synchronous wind

Hao WANG, Fengge ZHANG, Tao GUAN, Siyang YU

Journal Article

Robust nonlinear control via feedback linearization and Lyapunov theory for permanent magnet synchronous

Ridha CHEIKH, Arezki MENACER, L. CHRIFI-ALAOUI, Said DRID

Journal Article

Observation of black carbon aerosol in Beijing, 2003

LOU Shujuan, MAO Jietai, WANG Meihua

Journal Article

Optimization design of an interior permanent-magnet synchronous machine for a hybrid hydraulic excavator

Qi-huai CHEN,Qing-feng WANG,Tao WANG

Journal Article

Design and Implementation of Meteorological Observation System Projects

Zheng Guoguang

Journal Article

Considerations on Promoting the Smooth Development of National Land Observation System

Guo Jianning

Journal Article

Temperature Prediction for Sun Synchronous Satellite on Orbit

Wei Chuanfeng,Li Yunze,Yuan Lingshuang,Wang Jun,Ning Xianwen

Journal Article

Development of Marine Equipment for Underwater Stereoscopic Observation

Ma Rui, Zhao Xiutao, Liu Cungen

Journal Article

The Chinese polar atmospheric sciences observation engineering system

Lu LongHua,Bian Lingen

Journal Article

biochar and earthworm interactively affected CO and NO emissions in agricultural and forest soils: Observation

Journal Article