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Buoyancy-driven invasion percolation with migration and fragmentation
Wagner, G.; Meakin, P.; Feder, J.; Jøssang, T. - In: Physica A: Statistical Mechanics and its Applications 245 (1997) 3, pp. 217-230
A modified invasion percolation model that includes migration and fragmentation processes is presented. Fluid clusters were formed using the ordinary gravity invasion percolation model. Migration of fluid clusters was driven by buoyancy forces. The fluid formed a fragmented structure oriented in...
Persistent link: https://www.econbiz.de/10011063207
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The microphysical effects in nonisothermal nucleation
Kuni, F.M; Grinin, A.P; Shchekin, A.K - In: Physica A: Statistical Mechanics and its Applications 252 (1998) 1, pp. 67-84
The role of microphysical effects in the ability of a small new phase nucleus to emit molecules into the vapor is revealed on a thermodynamic basis. It is shown that dependence of the surface tension of a nucleus on its temperature and the dependence of the vaporisation heat on the nuclear...
Persistent link: https://www.econbiz.de/10010872417
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Homoclinic tangencies and routes to chaos in a dripping faucet experiment
Pinto, R.D.; Sartorelli, J.C.; Gonçalves, W.M. - In: Physica A: Statistical Mechanics and its Applications 291 (2001) 1, pp. 244-254
We present the analysis of two attractor sequences from a dripping faucet experiment, which were taken in different regions of the control parameter (dripping rate). We used symbolic dynamics analysis to enlighten the similarities between some experimental attractors and Hénon-like attractors....
Persistent link: https://www.econbiz.de/10010591278
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DROP: the Durable Reconnaissance and Observation Platform
Parness, Aaron; McKenzie, Clifford - In: Industrial Robot: An International Journal 40 (2013) 3, pp. 218-223
Purpose – The Durable Reconnaissance and Observation Platform (DROP) is a prototype robotic platform with the ability … two‐wheel, two‐motor design that delivers high mobility with low complexity. DROP extends microspine climbing technology … while maintaining microspine's ability to opportunistically grip rough surfaces. Findings – The DROP prototype was able to …
Persistent link: https://www.econbiz.de/10014832197
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АНТИКРИЗИСНЫЕ ПРОГРАММЫ КАК ЭЛЕМЕНТЫ АНТИКРИЗИСНОЙ ПОЛИТИКИ В РАМКАХ РЕГИОНАЛЬНОГО АНТИКРИЗИСНОГО РЕГУЛИРОВАНИЯ...
ТРЕНИН Ю.А. - In: Бизнес в законе. … (2011) 3, pp. 336-339
В статье рассматривается практическое применение антикризисной политики применительно к антикризисному регулированию на уровне отдельного региона....
Persistent link: https://www.econbiz.de/10011223499
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Opperational Systems for Emergency Preparedness and Response
Sugiyama, G; Nasstrom, J S; Baskett, R - 2008
Operational systems predict the consequences of atmospheric releases of hazardous materials for real-time emergency response, pre-event planning, and post-incident assessment. Such systems provide federal, state, and local agencies, emergency planners and responders, public health officials,...
Persistent link: https://www.econbiz.de/10009435402
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Computation of self-consistent 2-D MHD with neutral-beam and bootstrap currents in elongated plasmas
Devoto, R.S.; Tani, K.; Azumi, M. - 2009
The observation of substantial current drive from neutral beam injection (NBI) in TFTR, JET and DIII-D has led to renewed interest in a steady state, non-inductively driven tokamak. The discovery of apparently considerable neoclassical (bootstrap) current in TFTR, makes a steady state device...
Persistent link: https://www.econbiz.de/10009436273
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Exploring the development of an innovation metric - from hypothesis to initial use
Radziszewski, Peter - In: Journal of Innovation and Entrepreneurship 9 (2020) 1, pp. 1-29
Purpose The challenge to improving innovation in an organisation is limited by the metrics used to measure it. Dimensions related to where an organisation is on an innovation spectrum, how fast is that organisation innovating and what is holding it back are key elements that could be used to...
Persistent link: https://www.econbiz.de/10013205640
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Qualitative investigation on effects of manifold shape on methanol steam reforming for hydrogen production
Zeng, Dehuai; Pan, Minqiang; Tang, Yong - In: Renewable Energy 39 (2012) 1, pp. 313-322
Fluid velocity distribution among microchannels plays important role on the reaction performances. In this work, the velocity distribution among microchannels with two different manifold structures is compared by a three-dimensional CFD model under two situations respectively, no reaction and...
Persistent link: https://www.econbiz.de/10010806506
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Unsteady fluid mechanics effects in water based human locomotion
Dabnichki, Peter - In: Mathematics and Computers in Simulation (MATCOM) 82 (2011) 3, pp. 471-482
Computational fluid mechanics (CFD) has made substantial progress on modelling a variety of important problems in industry. However, there is still lack of reliable methods to model the motion of the body in water. This is a central issue in understanding animal and human propulsion in water not...
Persistent link: https://www.econbiz.de/10010751797