The Experts below are selected from a list of 279 Experts worldwide ranked by ideXlab platform
M. H. M. Morais - One of the best experts on this subject based on the ideXlab platform.
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Resonance capture at arbitrary inclination ii effect of the radial drift rate
Monthly Notices of the Royal Astronomical Society, 2017Co-Authors: Fathi Namouni, M. H. M. MoraisAbstract:The effect of radial drift rate on mean motion Resonance capture is studied for prograde, polar and retrograde orbits. We employ the numerical framework of our earlier exploration of Resonance capture at arbitrary inclination. Randomly constructed samples of massless particles are set to migrate radially from outside the orbit of a Jupiter-mass planet at different drift rates totalling more than $1.6\times 10^6$ numerical simulations. Slower drift rates reduce overall capture probability especially for prograde orbits and enhance capture at specific initial inclinations of high order Resonances such as the outer 1:5, 1:4, 1:3, 2:5, 3:7 and 5:7. Global capture is reduced with increasing eccentricity at all inclinations as high order Resonances capture more particles that are subsequently lost by disruptive close encounters with the planet. The relative efficiency of retrograde Resonances at long-lived capture with respect to prograde Resonances is explained by the reduced effect of planet encounters as such events occur with a shorter duration and a higher relative velocity for retrograde motion. Capture in the coorbital 1:1 Resonance is marginally affected by the radial drift rate except for nearly coplanar retrograde eccentric orbits whose capture likelihood is increased significantly with slower drift rates. An unexpected finding is the presence of a dynamical corridor for capture in high order inner prograde Resonances with initial inclinations in the range [50$^\circ$,80$^\circ$] especially at the inner 5:2 Resonance whose capture likelihood peaks at 80% to 90% depending on initial eccentricity.
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Resonance capture at arbitrary inclination – II. Effect of the radial drift rate
Monthly Notices of the Royal Astronomical Society, 2017Co-Authors: Fathi Namouni, M. H. M. MoraisAbstract:The effect of radial drift rate on mean motion Resonance capture is studied for prograde, polar and retrograde orbits. We employ the numerical framework of our earlier exploration of Resonance capture at arbitrary inclination. Randomly constructed samples of massless particles are set to migrate radially from outside the orbit of a Jupiter-mass planet at different drift rates totalling more than $1.6\times 10^6$ numerical simulations. Slower drift rates reduce overall capture probability especially for prograde orbits and enhance capture at specific initial inclinations of high order Resonances such as the outer 1:5, 1:4, 1:3, 2:5, 3:7 and 5:7. Global capture is reduced with increasing eccentricity at all inclinations as high order Resonances capture more particles that are subsequently lost by disruptive close encounters with the planet. The relative efficiency of retrograde Resonances at long-lived capture with respect to prograde Resonances is explained by the reduced effect of planet encounters as such events occur with a shorter duration and a higher relative velocity for retrograde motion. Capture in the coorbital 1:1 Resonance is marginally affected by the radial drift rate except for nearly coplanar retrograde eccentric orbits whose capture likelihood is increased significantly with slower drift rates. An unexpected finding is the presence of a dynamical corridor for capture in high order inner prograde Resonances with initial inclinations in the range [50$^\circ$,80$^\circ$] especially at the inner 5:2 Resonance whose capture likelihood peaks at 80% to 90% depending on initial eccentricity.
Fathi Namouni - One of the best experts on this subject based on the ideXlab platform.
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Resonance capture at arbitrary inclination ii effect of the radial drift rate
Monthly Notices of the Royal Astronomical Society, 2017Co-Authors: Fathi Namouni, M. H. M. MoraisAbstract:The effect of radial drift rate on mean motion Resonance capture is studied for prograde, polar and retrograde orbits. We employ the numerical framework of our earlier exploration of Resonance capture at arbitrary inclination. Randomly constructed samples of massless particles are set to migrate radially from outside the orbit of a Jupiter-mass planet at different drift rates totalling more than $1.6\times 10^6$ numerical simulations. Slower drift rates reduce overall capture probability especially for prograde orbits and enhance capture at specific initial inclinations of high order Resonances such as the outer 1:5, 1:4, 1:3, 2:5, 3:7 and 5:7. Global capture is reduced with increasing eccentricity at all inclinations as high order Resonances capture more particles that are subsequently lost by disruptive close encounters with the planet. The relative efficiency of retrograde Resonances at long-lived capture with respect to prograde Resonances is explained by the reduced effect of planet encounters as such events occur with a shorter duration and a higher relative velocity for retrograde motion. Capture in the coorbital 1:1 Resonance is marginally affected by the radial drift rate except for nearly coplanar retrograde eccentric orbits whose capture likelihood is increased significantly with slower drift rates. An unexpected finding is the presence of a dynamical corridor for capture in high order inner prograde Resonances with initial inclinations in the range [50$^\circ$,80$^\circ$] especially at the inner 5:2 Resonance whose capture likelihood peaks at 80% to 90% depending on initial eccentricity.
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Resonance capture at arbitrary inclination – II. Effect of the radial drift rate
Monthly Notices of the Royal Astronomical Society, 2017Co-Authors: Fathi Namouni, M. H. M. MoraisAbstract:The effect of radial drift rate on mean motion Resonance capture is studied for prograde, polar and retrograde orbits. We employ the numerical framework of our earlier exploration of Resonance capture at arbitrary inclination. Randomly constructed samples of massless particles are set to migrate radially from outside the orbit of a Jupiter-mass planet at different drift rates totalling more than $1.6\times 10^6$ numerical simulations. Slower drift rates reduce overall capture probability especially for prograde orbits and enhance capture at specific initial inclinations of high order Resonances such as the outer 1:5, 1:4, 1:3, 2:5, 3:7 and 5:7. Global capture is reduced with increasing eccentricity at all inclinations as high order Resonances capture more particles that are subsequently lost by disruptive close encounters with the planet. The relative efficiency of retrograde Resonances at long-lived capture with respect to prograde Resonances is explained by the reduced effect of planet encounters as such events occur with a shorter duration and a higher relative velocity for retrograde motion. Capture in the coorbital 1:1 Resonance is marginally affected by the radial drift rate except for nearly coplanar retrograde eccentric orbits whose capture likelihood is increased significantly with slower drift rates. An unexpected finding is the presence of a dynamical corridor for capture in high order inner prograde Resonances with initial inclinations in the range [50$^\circ$,80$^\circ$] especially at the inner 5:2 Resonance whose capture likelihood peaks at 80% to 90% depending on initial eccentricity.
Gustavo Pinares - One of the best experts on this subject based on the ideXlab platform.
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Investigation of dc-network Resonance-related instabilities in VSC-based multi-terminal HVDC systems with tests with a real-time digital simulator
2017Co-Authors: Gustavo Pinares, Massimo BongiornoAbstract:A simplified method is proposed to investigate potential instabilities originated from dc-side Resonances in multi-terminal HVDC systems. The method consists of identifying the Resonances from the points to where the converters are connected. The method is applied to a four-terminal HVDC system, and the analysis indicates there are two Resonance phenomena and a group of converters have the most significant impact on the first Resonance, while the others on the second Resonance. The four-terminal HVDC system is implemented in a Real-Time Digital Simulator and three dc-network configurations are investigated through the proposed method. The test results show the validity of the theoretical findings
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Investigation of dc-network Resonance-related instabilities in VSC-based multi-terminal HVDC systems with tests in a Real-Time Digital Simulator
2017 19th European Conference on Power Electronics and Applications (EPE'17 ECCE Europe), 2017Co-Authors: Gustavo Pinares, Massimo Bongiomo, Sayan Acharya, Subhashish BhattacharyaAbstract:A simplified method is proposed to investigate potential instabilities originated from dc-side Resonances in multi-terminal HVDC systems. The method consists of identifying the Resonances from the points to where the converters are connected. The method is applied to a four-terminal HVDC system, and the analysis indicates there are two Resonance phenomena and a group of converters have the most significant impact on the first Resonance, while the others on the second Resonance. The four-terminal HVDC system is implemented in a Real-Time Digital Simulator and three dc-network configurations are investigated through the proposed method. The test results show the validity of the theoretical findings.
Subhashish Bhattacharya - One of the best experts on this subject based on the ideXlab platform.
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Investigation of dc-network Resonance-related instabilities in VSC-based multi-terminal HVDC systems with tests in a Real-Time Digital Simulator
2017 19th European Conference on Power Electronics and Applications (EPE'17 ECCE Europe), 2017Co-Authors: Gustavo Pinares, Massimo Bongiomo, Sayan Acharya, Subhashish BhattacharyaAbstract:A simplified method is proposed to investigate potential instabilities originated from dc-side Resonances in multi-terminal HVDC systems. The method consists of identifying the Resonances from the points to where the converters are connected. The method is applied to a four-terminal HVDC system, and the analysis indicates there are two Resonance phenomena and a group of converters have the most significant impact on the first Resonance, while the others on the second Resonance. The four-terminal HVDC system is implemented in a Real-Time Digital Simulator and three dc-network configurations are investigated through the proposed method. The test results show the validity of the theoretical findings.
Massimo Bongiorno - One of the best experts on this subject based on the ideXlab platform.
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Investigation of dc-network Resonance-related instabilities in VSC-based multi-terminal HVDC systems with tests with a real-time digital simulator
2017Co-Authors: Gustavo Pinares, Massimo BongiornoAbstract:A simplified method is proposed to investigate potential instabilities originated from dc-side Resonances in multi-terminal HVDC systems. The method consists of identifying the Resonances from the points to where the converters are connected. The method is applied to a four-terminal HVDC system, and the analysis indicates there are two Resonance phenomena and a group of converters have the most significant impact on the first Resonance, while the others on the second Resonance. The four-terminal HVDC system is implemented in a Real-Time Digital Simulator and three dc-network configurations are investigated through the proposed method. The test results show the validity of the theoretical findings
