Results 21 to 30 of about 1,050 (195)

Dual-Mode Brushless Wound Rotor Synchronous Machine for High Starting Torque

open access: yesIEEE Access, 2022
This paper proposes a dual-mode brushless wound rotor synchronous machine (DBL-WRSM) for high starting torque. The proposed DBL-WRSM consists of two modes: induction and brushless (BL)-synchronous modes.
Ali Roshanzamir   +5 more
doaj   +1 more source

Resonantly Forced Baroclinic Waves in the Oceans: A New Approach to Climate Variability

open access: yesJournal of Marine Science and Engineering, 2020
How variations in Earth’s orbit pace the glacial-interglacial cycles of the Quaternary are probably one of the greatest mysteries of modern climate science.
Jean-Louis Pinault
doaj   +1 more source

A generalized frequency detuning method for multidegree-of-freedom oscillators with nonlinear stiffness [PDF]

open access: yes, 2013
In this paper, we derive a frequency detuning method for multi-degree-of-freedom oscillators with nonlinear stiffness. This approach includes a matrix of detuning parameters, which are used to model the amplitude dependent variation in resonant ...
Neild, S.A   +3 more
core   +1 more source

Poster: Self Inducing Subharmonic Waves

open access: yes, 2022
International audienceHigh frequency excitation at 100g accelerationamplitude drives new wave modes on a verticallyvibrated sessile drop. We showcase a self inducingphenomenon that couples high-mode subharmonicwaves.Unlike Faraday waves, the sessile ...
Matar, Omar   +5 more
core   +1 more source

Nonlinear Interaction of Low-frequency Alfvén Waves and Ions

open access: yesThe Astrophysical Journal, 2023
The interaction between Alfvén waves and particles is a critical phenomenon in space and laboratory plasmas, and it has been observed that low-frequency Alfvén waves can accelerate and heat ions through subharmonic resonant interactions.
Xianshu Wu   +4 more
doaj   +1 more source

Anharmonic classical time crystals: A coresonance pattern formation mechanism

open access: yesPhysical Review Research, 2021
Driven many-body systems have been shown to exhibit discrete time crystal phases characterized by broken discrete time-translational symmetry. This has been achieved generally through a subharmonic response, in which the system undergoes one oscillation ...
Zachary G. Nicolaou, Adilson E. Motter
doaj   +1 more source

A Simulation for Detecting Nonlinear Echoes from Microbubbles Packets

open access: yesArchives of Acoustics, 2014
This work presents a simulation of the response of packets of microbubbles in an ultrasonic pulse-echo scan line. Rayleigh-Plesset equation has been used to predict the echo from numerically obtained radial dynamics of microbubbles. Varying the number of
Mohamed Galal Sayed ALI   +2 more
doaj   +1 more source

Subharmonic instabilities in Kerr microcombs

open access: yes, 2023
We report experimental observation of subharmonic mode excitation in primary Kerr optical frequency combs generated using crystalline whispering-gallery mode resonators.
Coillet, Aurélien   +5 more
core   +1 more source

Research of Ferroresonance in 6-35 kV Electrical Networks Taking Into Account the Dynamic Model of Non-Linear Inductivity of Power Transformer

open access: yesProceedings of the International Conference on Applied Innovations in IT, 2023
Considering that distribution networks of 6-35 kV are the longest among electrical networks, one of the specialaspects of improving the reliability of power supply is the study of the effect of ferroresonance on the performance of voltage transformers ...
Shavkat Begmatov
doaj   +1 more source

Influence of initial phase on subharmonic resonance in an incompressible boundary layer

open access: yes, 2021
The influence of the initial phase of fundamental and subharmonic waves on subharmonic resonance is investigated for an incompressible boundary layer with zero and adverse pressure gradients.
Lim, Jiseop   +11 more
core   +1 more source

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