The Experts below are selected from a list of 1226886 Experts worldwide ranked by ideXlab platform
Vernon A Squire - One of the best experts on this subject based on the ideXlab platform.
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an idealized wave ice Interaction Model without subgrid spatial or temporal discretizations
Annals of Glaciology, 2015Co-Authors: Luke G Bennetts, Siobhan Ofarrell, Petteri Uotila, Vernon A SquireAbstract:A new numerical implementation is proposed for a wave-ice Interaction Model. It is applied to an idealized transect geometry. Wave attenuation due to ice floes and wave-induced ice fracture are both included in the Model. The new method alleviates the need for subgrid spatial or temporal discretizations, thereby facilitating future integration of wave-ice Interactions into large-scale coupled Models.
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an idealised wave ice Interaction Model without subgrid spatial and temporal discretisations
arXiv: Atmospheric and Oceanic Physics, 2014Co-Authors: Luke G Bennetts, Siobhan Ofarrell, Petteri Uotila, Vernon A SquireAbstract:A modified version of the wave-ice Interaction Model proposed by Williams et al (2013a,b) is presented for an idealised transect geometry. Wave attenuation due to ice floes and wave-induced ice fracture are both included in the wave-ice Interaction Model. Subgrid spatial and temporal discretisations are not required in the modified version of the Model, thereby facilitating its future integration into large-scaled coupled Models. Results produced by the new Model are compared to results produced by the original Model of Williams et al (2013b).
Luke G Bennetts - One of the best experts on this subject based on the ideXlab platform.
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an idealized wave ice Interaction Model without subgrid spatial or temporal discretizations
Annals of Glaciology, 2015Co-Authors: Luke G Bennetts, Siobhan Ofarrell, Petteri Uotila, Vernon A SquireAbstract:A new numerical implementation is proposed for a wave-ice Interaction Model. It is applied to an idealized transect geometry. Wave attenuation due to ice floes and wave-induced ice fracture are both included in the Model. The new method alleviates the need for subgrid spatial or temporal discretizations, thereby facilitating future integration of wave-ice Interactions into large-scale coupled Models.
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an idealised wave ice Interaction Model without subgrid spatial and temporal discretisations
arXiv: Atmospheric and Oceanic Physics, 2014Co-Authors: Luke G Bennetts, Siobhan Ofarrell, Petteri Uotila, Vernon A SquireAbstract:A modified version of the wave-ice Interaction Model proposed by Williams et al (2013a,b) is presented for an idealised transect geometry. Wave attenuation due to ice floes and wave-induced ice fracture are both included in the wave-ice Interaction Model. Subgrid spatial and temporal discretisations are not required in the modified version of the Model, thereby facilitating its future integration into large-scaled coupled Models. Results produced by the new Model are compared to results produced by the original Model of Williams et al (2013b).
Petteri Uotila - One of the best experts on this subject based on the ideXlab platform.
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an idealized wave ice Interaction Model without subgrid spatial or temporal discretizations
Annals of Glaciology, 2015Co-Authors: Luke G Bennetts, Siobhan Ofarrell, Petteri Uotila, Vernon A SquireAbstract:A new numerical implementation is proposed for a wave-ice Interaction Model. It is applied to an idealized transect geometry. Wave attenuation due to ice floes and wave-induced ice fracture are both included in the Model. The new method alleviates the need for subgrid spatial or temporal discretizations, thereby facilitating future integration of wave-ice Interactions into large-scale coupled Models.
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an idealised wave ice Interaction Model without subgrid spatial and temporal discretisations
arXiv: Atmospheric and Oceanic Physics, 2014Co-Authors: Luke G Bennetts, Siobhan Ofarrell, Petteri Uotila, Vernon A SquireAbstract:A modified version of the wave-ice Interaction Model proposed by Williams et al (2013a,b) is presented for an idealised transect geometry. Wave attenuation due to ice floes and wave-induced ice fracture are both included in the wave-ice Interaction Model. Subgrid spatial and temporal discretisations are not required in the modified version of the Model, thereby facilitating its future integration into large-scaled coupled Models. Results produced by the new Model are compared to results produced by the original Model of Williams et al (2013b).
Siobhan Ofarrell - One of the best experts on this subject based on the ideXlab platform.
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an idealized wave ice Interaction Model without subgrid spatial or temporal discretizations
Annals of Glaciology, 2015Co-Authors: Luke G Bennetts, Siobhan Ofarrell, Petteri Uotila, Vernon A SquireAbstract:A new numerical implementation is proposed for a wave-ice Interaction Model. It is applied to an idealized transect geometry. Wave attenuation due to ice floes and wave-induced ice fracture are both included in the Model. The new method alleviates the need for subgrid spatial or temporal discretizations, thereby facilitating future integration of wave-ice Interactions into large-scale coupled Models.
-
an idealised wave ice Interaction Model without subgrid spatial and temporal discretisations
arXiv: Atmospheric and Oceanic Physics, 2014Co-Authors: Luke G Bennetts, Siobhan Ofarrell, Petteri Uotila, Vernon A SquireAbstract:A modified version of the wave-ice Interaction Model proposed by Williams et al (2013a,b) is presented for an idealised transect geometry. Wave attenuation due to ice floes and wave-induced ice fracture are both included in the wave-ice Interaction Model. Subgrid spatial and temporal discretisations are not required in the modified version of the Model, thereby facilitating its future integration into large-scaled coupled Models. Results produced by the new Model are compared to results produced by the original Model of Williams et al (2013b).
R R Aguiar - One of the best experts on this subject based on the ideXlab platform.
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hysteretic bit rock Interaction Model to analyze the torsional dynamics of a drill string
Mechanical Systems and Signal Processing, 2018Co-Authors: T. G. Ritto, F F Real, Anas Batou, Christophe Desceliers, R R AguiarAbstract:Abstract The present paper proposes a novel hysteretic (non-reversible) bit/rock Interaction Model for the torsional dynamics of a drill string. Non-reversible means that the torque-on-bit depends not only on the bit speed, but also on the bit acceleration, producing a type of hysteretic cycle. The continuous drill string system is discretized by means of the finite element method and a reduced-order Model is constructed using the normal modes of the associated conservative system. The parameters of the proposed hysteretic bit/rock Interaction Model is fitted with field data. The non-linear torsional vibration and the stability map of the drill string system are analyzed employing the proposed bit/rock Interaction Model and also a commonly used reversible Model (without hysteresis). It turns out that the hysteretic Model affects the stability region of the system.
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Hysteretic bit/rock Interaction Model to analyze the torsional dynamics of a drill string
Mechanical Systems and Signal Processing, 2018Co-Authors: F F Real, T. G. Ritto, Anas Batou, Christophe Desceliers, R R AguiarAbstract:The present paper proposes a novel hysteretic (non-reversible) bit/rock Interaction Model for the torsional dynamics of a drill string. Non-reversible means that the torque-on-bit depends not only on the bit speed, but also on the bit acceleration, producing a type of hys-teretic cycle. The continuous drill string system is discretized by means of the finite element method and a reduced-order Model is constructed using the normal modes of the associated conservative system. The parameters of the proposed hysteretic bit/rock Interaction Model is fitted with field data. The non-linear torsional vibration and the stability map of the drill string system are analyzed employing the proposed bit/rock Interaction Model and also a commonly used reversible Model (without hysteresis). It turns out that the hysteretic Model affects the stability region of the system.
