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Massively-Parallel Molecular Dynamics Simulation of Clathrate Hydrates on Blue Gene Platforms

English, Niall J. - In: Energies 6 (2013) 6, pp. 3072-3081

Massively-parallel classical equilibrium molecular dynamics (MD) simulations have been performed to investigate the computational performance of the Simple Point Charge (SPC) model and single-particle model of Molinero <i>et al.</i> applied to simulation of methane hydrates, using systems consisting of...

Persistent link: https://www.econbiz.de/10011031213

Perspectives on Hydrate Thermal Conductivity

English, Niall J.; Tse, John S. - In: Energies 3 (2010) 12, pp. 1934-1942

In this review, the intriguing, anomalous behaviour of hydrate thermal conductivity will be described, and progress in …

Persistent link: https://www.econbiz.de/10010676071

Methane Flux and Authigenic Carbonate in Shallow Sediments Overlying Methane Hydrate Bearing Strata in Alaminos Canyon, Gulf of Mexico

Smith, Joseph P.; Coffin, Richard B. - In: Energies 7 (2014) 9, pp. 6118-6141

-derived carbon in shallow sediments overlying the hydrate bearing strata. When integrated with stable carbon isotope ratios of DIC … overlying hydrate bearing strata like those in Alaminos Canyon is critical to quantifying methane flux and estimating methane … hydrate distributions in gas hydrate bearing marine sediments. …

Persistent link: https://www.econbiz.de/10010945710

Direct Observation of THF Hydrate Formation in Porous Microstructure Using Magnetic Resonance Imaging

Xue, Kaihua; Zhao, Jiafei; Song, Yongchen; Liu, Weiguo; … - In: Energies 5 (2012) 4, pp. 898-910

The porous microstructure of hydrates governs the mechanical strength of the hydrate-bearing sediment. To investigate … the growth law and microstructure of hydrates in porous media, the growth process of tetrahydrofuran (THF) hydrate under … THF hydrate grows as different models under different concentration of THF solution (19%, 11.4% and 5.7% by weight) at 1 …

Persistent link: https://www.econbiz.de/10011030978

Hydrate Formation/Dissociation in (Natural Gas + Water + Diesel Oil) Emulsion Systems

Xiang, Chang-Sheng; Peng, Bao-Zi; Liu, Huang; Sun, Chang-Yu - In: Energies 6 (2013) 2, pp. 1009-1022

Hydrate formation/dissociation of natural gas in (diesel oil + water) emulsion systems containing 3 wt% anti … linearly with the increase of pressure, and decreases with the increase of water cut. There exists an initial slow hydrate … formation stage for systems with lower water cut, while rapid hydrate formation takes place and the process of the gas …

Persistent link: https://www.econbiz.de/10010676056

A High Performance Real-Time Simulator for Controllers Hardware-in-the-Loop Testing

Matar, Mahmoud; Karimi, Houshang; Etemadi, Amir; … - In: Energies 5 (2012) 6, pp. 1713-1733

architecture is realized based on the FPGA technology. The simulator is tested and its CHIL capability verified based on the closed …

Persistent link: https://www.econbiz.de/10010675998

Thermodynamic Rarity and the Loss of Mineral Wealth

Valero, Antonio; Valero, Alicia - In: Energies 8 (2015) 2, pp. 821-836

The second law of thermodynamics and, specifically, exergy analysis have been traditionally used for the assessment and optimization of energy systems. Nevertheless, as shown in this paper, exergy could also constitute a powerful tool for the evaluation of mineral commodities. That said, new or...

Persistent link: https://www.econbiz.de/10011133882

A Back-to-Back 2L-3L Grid Integration of a Marine Current Energy Converter

Apelfröjd, Senad; Ekström, Rickard; Thomas, Karin; … - In: Energies 8 (2015) 2, pp. 808-820

The paper proposes a back-to-back 2L-3L grid connection topology for a marine current energy converter. A prototype marine current energy converter has been deployed by a research group at Uppsala University. The concept behind the prototype revolves around a fixed pitch vertical axis turbine...

Persistent link: https://www.econbiz.de/10011133883

Reliability-Based Structural Optimization of Wave Energy Converters

Ambühl, Simon; Kramer, Morten; Sørensen, John Dalsgaard - In: Energies 7 (2014) 12, pp. 8178-8200

More and more wave energy converter (WEC) concepts are reaching prototypelevel. Once the prototype level is reached, the next step in order to further decrease thelevelized cost of energy (LCOE) is optimizing the overall system with a focus on structuraland maintenance (inspection) costs, as...

Persistent link: https://www.econbiz.de/10011096205

Numerical and Theoretical Investigations Concerning the Continuous-Surface-Curvature Effect in Compressor Blades

Song, Yin; Gu, Chun-Wei; Xiao, Yao-Bing - In: Energies 7 (2014) 12, pp. 8150-8177

Though the importance of curvature continuity on compressor blade performances has been realized, there are two major questions that need to be solved,<i> i.e.</i>, the respective effects of curvature continuity at the leading-edge blend point and the main surface, and the contradiction between the...

Persistent link: https://www.econbiz.de/10011096206