Results 41 to 50 of about 255,664 (201)

A Novel Approach to Investigating Transport of Lost Circulation Materials in Rough Fracture

Energies, 2018
The drilling fluid loss or lost circulation via fractures is one of the critical engineering problems in the development of deep oil and gas resources. The conventional treatment is to introduce granular lost circulation material (LCM) into the drilling ...
Yi Feng, Gao Li, Yingfeng Meng, Boyun Guo   +3 more
doaj   +1 more source

Lyapunov Exponents of Two Stochastic Lorenz 63 Systems [PDF]

, 2019
Two different types of perturbations of the Lorenz 63 dynamical system for Rayleigh-Benard convection by multiplicative noise -- called stochastic advection by Lie transport (SALT) noise and fluctuation-dissipation (FD) noise -- are found to produce ...
Geurts, Bernard J., Holm, Darryl D., Luesink, Erwin   +2 more
core   +3 more sources

Emergence of decadal linkage between Western Australian coast and Western–central tropical Pacific

Nature Communications
The impact of interbasin linkage on the weather/climate and ecosystems is significantly broader and profounder than that of only appearing in an individual basin. Here, we reveal that a decadal linkage of sea surface temperature (SST) has emerged between
Yuewen Ding, Pengfei Lin, Hailong Liu, Bo Wu, Yuanlong Li, Lin Chen, Lei Zhang, Aixue Hu, Yiming Wang, Yiyun Yao, Bowen Zhao, Wenrong Bai, Weiqing Han   +12 more
doaj   +1 more source

Characteristics of Two-Dimensional Quantum Turbulence in a Compressible Superfluid [PDF]

, 2012
Under suitable forcing a fluid exhibits turbulence, with characteristics strongly affected by the fluid's confining geometry. Here we study two-dimensional quantum turbulence in a highly oblate Bose-Einstein condensate in an annular trap.
A. S. Bradley, A. N. Kolmogorov, B. P. Anderson, E. C. Samson, E. M. Wright, J. Sommeria, K. J. H. Law, L. P. Pitaevskii, M. J. Davis, M. Lesieur, P. G. Kevrekidis, R. Carretero-González, S. J. Rooney, T. W. Neely   +13 more
core   +2 more sources

Granular circulation in a cylindrical pan: simulations of reversing radial and tangential flows

, 2006
Granular flows due to simultaneous vertical and horizontal excitations of a flat-bottomed cylindrical pan are investigated using event-driven molecular dynamics simulations.
B. D. Lubachevsky, D. Bideau, H. El hor, John J. Drozd, M. D. Shattuck, O. R. Walton, Oleh Baran, Peter H. Poole, Robert J. Martinuzzi   +8 more
core   +1 more source

Numerical experiments on vortex ring formation [PDF]

, 2001
Numerical simulations are used to study the formation of vortex rings that are generated by applying a non-conservative force of long duration, simulating experimental vortex ring generation with large stroke ratio. For sufficiently long-duration forces,
Colonius, Tim, Mohseni, Kamran, Ran, Hongyu   +2 more
core   +2 more sources

Numerical Simulation Study of Seafloor Hydrothermal Circulation Based on HydrothermalFoam: A Case Study of the Wocan-1 Hydrothermal Field, Carlsberg Ridge, Indian Ocean

Journal of Marine Science and Engineering, 2023
Deep-sea hydrothermal circulation plays a pivotal role in the material and energy exchange in deep-sea environments, exerting significant influence on the evolution of seawater chemistry and global climate dynamics. Based on existing data and assumptions,
Haoyang Zeng, Peng Hu, Zhiguo He, Jinrong Yao, Zhiying Yang   +4 more
doaj   +1 more source

Unsteady forces on an accelerating plate and application to hovering insect flight [PDF]

, 2004
The aerodynamic forces on a flat plate accelerating from rest at fixed incidence in two-dimensional power-law flow are studied analytically and numerically.
Pullin, D. I., Wang, Z. Jane
core   +1 more source

Computational fluid dynamics study of yield power law drilling fluid flow through smooth-walled fractures

Journal of Petroleum Exploration and Production Technology, 2019
Presence of natural fractures in sub-surface makes an oil well drilling operation very challenging. As one of the major functions of drilling mud is to maintain bottomhole pressure inside a wellbore to avoid any invasion of unwanted high-pressure influx (
Faysal Ahammad, Shahriar Mahmud, Sheikh Zahidul Islam   +2 more
doaj   +1 more source

Climate dynamics and fluid mechanics: Natural variability and related uncertainties

, 2010
The purpose of this review-and-research paper is twofold: (i) to review the role played in climate dynamics by fluid-dynamical models; and (ii) to contribute to the understanding and reduction of the uncertainties in future climate-change projections. To
Allen, Andronov, Anishchenko, Anishchenko, Anishchenko, Arnold, Arnold, Arnold, Arnold, Arnol’d, Bak, Bak, Berger, Berloff, Bouchet, Caraballo, Cessi, Chang, Chang, Charney, Coayla-Teran, Cong, Cong, Crauel, Da Costa, Denjoy, Dijkstra, Dijkstra, Dijkstra, Duan, Duan, Dubar, Eckmann, Eric Simonnet, Farrel, Feigenbaum, Feliks, Feliks, Ghil, Ghil, Ghil, Ghil, Gill, Grebogi, Guckenheimer, Guckenheimer, Held, Hillerbrand, Jiang, Jiang, Jin, Jin, Jung, Kaijser, Katok, Katsman, Kloeden, Kondrashov, Kravtsov, Kuksin, Kuznetsov, Langa, Li, Lin, Lin, Lin, Lorenz, Madden, Mañé, McWilliams, Meacham, Michael Ghil, Mickaël D. Chekroun, Mitchell, Moron, Nadiga, Neelin, Newhouse, Oseledets, Palis, Palmer, Pedlosky, Pedlosky, Peixoto, Plaut, Poincaré, Pope, Primeau, Robbin, Robert, Robinson, Saunders, Sell, Sheremet, Simonnet, Simonnet, Simonnet, Simonnet, Simonnet, Simonnet, Sinai, Smale, Smale, Speich, Stainforth, Stommel, Sushama, Sverdrup, Trefethen, Tziperman, Tziperman, Williams, Wunsch, Zmarrou   +113 more
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