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Di Lu, Qin Tang, Dehuan Yang, Rongtao Yan, Yun Chen and Shuai Tao
Stability condition is of critical importance for methane hydrate exploitation, transportation, and reserves. This study measured the stability conditions of methane hydrate in fine-grained sediment with different dry densities (ρd" role="prese...
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Jinzhu Shi, Lihui Yang and Hao Yang
As a common interface circuit for renewable energy integrated into the power grid, the inverter is prone to work under a three-phase unbalanced weak grid. In this paper, the instability of grid-connected inverters under the unbalanced grid condition is i...
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Yinsheng Li, Zhengqiang Luo, Qing Xu and Wei Zheng
According to the established theoretical model, this study deduces the convergence conditions of the system and obtains the step-size bound suitable for all stages of system operation. The simulation and experimental results show that the system has exce...
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Kyle E. Marlantes, Sungeun (Peter) Kim and Lucas A. Hurt
This paper provides a discussion of the technical and theoretical ambiguities, requirements, and limitations to develop a practical implementation of the IMO Second Generation Intact Stability criteria. This discussion is the result of industry collabora...
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Epameinondas Katsikas, Nikiforos T. Laopodis and Konstantinos Spanos
This paper investigates the dynamic stability of public debt and its solvency condition in the face of crisis periods (1980?2021) in a sample of 11 euro-area countries. The focus is on the feedback loop between the dynamic stability of public debt and in...
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A. WIIN NIELSEN
The stability of atmospheric waves with low wave numbers is investigated using a quasi-geostrophic model of the second kind. Such a model is based on the thermodynamic equation, the continuity equation and a rigorous use of the geostrophic relations. ...
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This paper deals with a methodical design approach of fault-tolerant controller that gives assurance for the the stabilization and acceptable control performance of the nonlinear systems which can be described by Takagi–Sugeno (T–S) fuzzy mod...
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Vladyslav Rozov, Andreas Volmering, Andreas Hermanutz, Mirko Hornung and Christian Breitsamter
The goal of developing aircraft that are greener, safer and cheaper can only be maintained through significant innovations in aircraft design. An integrated multidisciplinary design approach can lead to an increase in the performance of future derivative...
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Sheng Chen, Yang Hao, Wencai Zhang, Ying Sun and Xue Liu
Because the failure potential of a landslide is difficult to assess, a motorway landslide that has obviously deformed was used as a case study in this research. Several multi-integrated geotechniques, including field investigation, drilling, electrical r...
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Sadik Khan, John Ivoke and Masoud Nobahar
Expansive Yazoo clay soil is susceptible to volumetric deformation and is dominant in central Mississippi and other neighboring southern states of the United States. Recurring shrink-swell behavior causes a significant problem to infrastructures in the a...
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Benny Budiawan Tjandrasa
Pág. 1 - 12
Governments sell bonds to finance their budget. The investors willing to buy government bonds because of the yield they will get, but on the other hand if government bond yields is too high it would burden the state in paying the interest due. Vari...
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V. I. Hritsyk
Pág. 54 - 57
The functions of the intense condition, durability and the stability describing stability of the subgrade, algorithms of their optimization and definition are considered in the article.
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Lite Zhang, Chengwei Zhang, Huixia Jia and Ruoling Dong
In this paper, the supercavitation of the parallel and tandem projectiles moving underwater with high-speed under the condition with/without lateral flows is numerically simulated by the volume of fraction (VOF) model. The motion of the projectiles was h...
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Yuting Feng, Fuyu Yan, Lianrong Wu, Guangyin Lu and Taoying Liu
The normal operation of the Yulangpei tailings reservoir is affected by landslide stability. In this paper, taking the main and side slopes near the dam bank of the Yulangpei ditch as an example, the water?soil coupling theory is applied to comprehensive...
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Hosein Gholami-Khesht, Pooya Davari, Chao Wu and Frede Blaabjerg
This paper proposes a systematic control design method for active damping control of grid-connected voltage source converters (VSCs). The proposed control method considers the conventional cascaded control loops and improves them by including additional ...
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Xinbo Zhao, Jianjun Wang and Yue Mei
Currently, coal borehole collapses frequently occur during drilling. Considering that the coal near to the wellbore is cut into blocks, and the cleat filler of the coal influences the stress distribution near the wellbore, a new theoretical solution of a...
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Xiaocui Chen, Yuan Zheng, Junhui Xu, Yuquan Zhang, E. Fernandez-Rodriguez, Chengyi Li, Ying Zhou and Tao Jiang
In non-design conditions, severe hydraulic instability can affect the stability of a pump station and even shorten its service life. A Francis pump station in the South-to-North Water Transfer Project was examined to carry out a numerical simulation of t...
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Agus Salim
Pág. 26 - 38
Clay mining activities at PT. Semen Indonesia (Persero) Tbk uses a Surface Mining system with tiered or layered mining methods. The clay mining activity in east kuari mliwang has produced 4-6 layers from the lowest elevation which is +0 meters above sea ...
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Siti Syazwani Samiri
Pág. 54
The application of urea fertilizer in agriculture industry has contributed to the advancement of crop production every year. Nevertheless, its low efficiency has led to high nitrogen losses in the form of Ammonia (NH3) and Nitrous Oxide (N2O) gases. Alli...
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Csaba Bazsó, Csaba Hos
Pág. 1 - 7
This paper focuses on flow induced static instabilities occurring in poppet valves. Computational fluid dynamics simulation were performed to gain static characteristics of the poppet valve and to demonstrate the unstable behaviour of the valve. Based on...
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