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Journal Article 8

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Atmospheric drag 1

CFRP 1

Formation flying 1

QB50 1

Wulong landslide 1

ZJUCubeSat 1

adjusted mesoscale drag model 1

aircraft 1

axial piston pump 1

back analysis 1

chemical additives 1

churning losses 1

desulfurization reaction 1

drag reduction 1

drag torque 1

heavy crude 1

high rotational speed 1

hole quality 1

hydraulic thrust system 1

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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.active accelerating and passive decelerating parts of trajectory as well as the cruise flight when thrustand drag are balanced.The analyses show that for small thrust and small axial overload, the discrepancy resulted from different

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

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Simulation analysis of pressure regulation of hydraulic thrust system on a shield tunneling machine

Zhibin LIU, Haibo XIE, Huayong YANG

Frontiers of Mechanical Engineering 2011, Volume 6, Issue 3,   Pages 377-382 doi: 10.1007/s11465-011-0226-y

Abstract:

Hydraulic thrust system is an important system in a shield tunneling machine.Pressure regulation of thrust cylinders is the most important function for thrust system during tunnelIn this paper, a hydraulic thrust system is explained, and a corresponding simulation model is carried

Keywords： tunnel     hydraulic thrust system     pressure regulation     simulation    

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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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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 realizepresents an integrated control strategy to achieve the desired in-track formation through the atmospheric dragAtmospheric 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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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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Preliminary Analysis on the May 1st Landslide at Wulong

Wang Jianfeng,Li Shihai,Yan Lin,Dong Dapeng

Strategic Study of CAE 2002, Volume 4, Issue 4,   Pages 22-28

Abstract:

A 9-story brick-concrete building rapidly collapsed due to a landslide in Wulong County, China, on May 1st, 2001.The failure took place at the beginning of the rainy season. This paper discusses a number of scenarios to highlight the background geology, possible causes and mechanisms of the rapid movement, as well as the possible perched water conditions and the influence of man-made changes in the morphology. Of particular importance are preceding some related back analyses. For this, at first, a 2-D rigid-body limit equilibrium analysis is carried out in the present paper considering various related loads applied on the slope. Then, based on the geometric data investigated in the field and assuming the slide mass holding limit equilibrium, the shear strength parameters are back calculated out. The parameters are further used for back analyses of the landslide in order to explore the cause of landslide occurred through changing the cut-slope shape and groundwater table. The presented spreadsheet method is another contribution from this paper. Through the work, the authors conclude that apart from possible defects in the structure, it is certain that the landslide initiated the building collapse. Intense rainfalls must have increased water content, and hence fluidity of sandy clay intersected in the beds and layers of the sandstone. The process of excavation prior to building construction may have participated in the loss of stability.

Keywords： Wulong landslide     reliability     back analysis     the residual thrust method     slope stability    

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Hole quality in longitudinal–torsional coupled ultrasonic vibration assisted drilling of carbon fiber reinforced plastics

Guofeng MA, Renke KANG, Zhigang DONG, Sen YIN, Yan BAO, Dongming GUO

Frontiers of Mechanical Engineering 2020, Volume 15, Issue 4,   Pages 538-546 doi: 10.1007/s11465-020-0598-y

Abstract: Experimental results indicate that LTC-UAD can reduce the thrust force by 39% compared to conventional

Keywords： longitudinal–torsional coupled     ultrasonically drilling     CFRP     thrust force     hole quality    

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Technologies for Pipelining High-Pour-Point and Viscous Crudes and Their Development

Zhang Jinjun

Strategic Study of CAE 2002, Volume 4, Issue 6,   Pages 71-76

Abstract: The up-to-date research and application of technologies for pour point depression and drag reduction

Keywords： pipelining     paraffin-base crude     heavy crude     pour point depression     drag reduction     chemical additives    

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Title Author Date Type Operation

Lateral Vibration Analyses of Flying Vehicle under Thrust and Drag

Song Jian

Journal Article

Simulation analysis of pressure regulation of hydraulic thrust system on a shield tunneling machine

Zhibin LIU, Haibo XIE, Huayong YANG

Journal Article

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

Journal Article

Nonlinear programming control using differential aerodynamic drag for CubeSat formation flying

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

Journal Article

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

Journal Article

Preliminary Analysis on the May 1st Landslide at Wulong

Wang Jianfeng,Li Shihai,Yan Lin,Dong Dapeng

Journal Article

Hole quality in longitudinal–torsional coupled ultrasonic vibration assisted drilling of carbon fiber reinforced plastics

Guofeng MA, Renke KANG, Zhigang DONG, Sen YIN, Yan BAO, Dongming GUO

Journal Article

Technologies for Pipelining High-Pour-Point and Viscous Crudes and Their Development

Zhang Jinjun

Journal Article