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Transverse plane

About: Transverse plane is a research topic. Over the lifetime, 17069 publications have been published within this topic receiving 194059 citations. The topic is also known as: axial plane.


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Journal ArticleDOI
01 Jan 2000
TL;DR: In this paper, a new regime of unstable detonation near the propagation limits was observed experimentally in a flat channel, which included three kinds of detonation instability: (1) the primary instability, which causes detonation waves moving in transverse directions (transverse detonations) to appear and disapear at regular intervals behind the leading shock, (2) the instability of the overdriven parts of the leading front, which is responsible for the formation of secondary detonation cells that coexist with transverse detonation wave, and (3) the explosion structure called trans
Abstract: A new regime of unstable detonation near the propagation limits was observed experimentally in a flat channel. Highly resolved, two-dimensional reactive Navier-Stokes numerical simulations with one-step Arrhenius kinetics were used to reproduce and analyze the detonation structures involved in this regime. The regime included three kinds of detonation instability: (1) the primary instability, which causes detonation waves moving in transverse directions (transverse detonations) to appear and disapear at regular intervals behind the leading shock: (2) the instability of the overdriven parts of the leading front, which is responsible for the formation of secondary detonation cells that coexist with transverse detonation waves: and (3) the instability of transverse detonations, which produces the fine structure called transverse detonation cells. Numerical simulations showed that transverse detonations appeared when a large induction zone formed behind the leading shock. The resulting reaction-zone structure was similar to that observed for spin detonations. The transverse detonation wave burned most of the material in the induction zone, thus preventing the formation of large unreacted pockets and leaving behind only thin tails of unreacted material. The material involved in transverse detonations was compressed by two shocks, which makes transverse detonation waves more unstable than the overdriven parts of the leading detonation front.

80 citations

Journal ArticleDOI
TL;DR: In this paper, the electrostatic ion instabilities were studied for oblique propagation in the presence of magnetic field-aligned currents and transverse localized electric fields in a weakly collisional plasma.
Abstract: The electrostatic ion instabilities are studied for oblique propagation in the presence of magnetic field-aligned currents and transverse localized electric fields in a weakly collisional plasma. The presence of transverse electric fields result in mode excitation for magnetic field aligned current values that are otherwise stable. The electron collisions enhance the growth while ion collisions have a damping effect. These results are discussed in the context of observations of low frequency ion modes in the auroral ionosphere by radar and rocket experiments.

80 citations

Journal ArticleDOI
TL;DR: An application of data analytics and supervised machine learning to allow accurate predictions of the macroscopic stiffness and yield strength of a unidirectional composite loaded in the transverse plane, able to accurately predict the homogenized properties of arbitrary microstructures.
Abstract: We present an application of data analytics and supervised machine learning to allow accurate predictions of the macroscopic stiffness and yield strength of a unidirectional composite loaded in the transverse plane. Predictions are obtained from the analysis of an image of the material microstructure, as well as knowledge of the constitutive models for fibres and matrix, without performing physically-based calculations. The computational framework is based on evaluating the 2-point correlation function of the images of 1800 microstructures, followed by dimensionality reduction via principal component analysis. Finite element (FE) simulations are performed on 1800 corresponding statistical volume elements (SVEs) representing cylindrical fibres in a continuous matrix, loaded in the transverse plane. A supervised machine learning (ML) exercise is performed, employing a gradient-boosted tree regression model with 10-fold cross-validation strategy. The model obtained is able to accurately predict the homogenized properties of arbitrary microstructures.

80 citations

Journal ArticleDOI
Yi Qin1, Yan Li1, Xiaobo Feng1, Yun-Feng Xiao1, Hong Yang1, Qihuang Gong1 
TL;DR: The observation of the spin separation of light in the plane of incidence when a linearly polarized beam is reflected or refracted at a planar dielectric interface is reported, comparable with the transverse spin separation induced by the well-known spin Hall effect of light.
Abstract: We report on the observation of the spin separation of light in the plane of incidence when a linearly polarized beam is reflected or refracted at a planar dielectric interface. Remarkably, the in-plane spin separation reaches hundreds of nanometers, comparable with the transverse spin separation induced by the well-known spin Hall effect of light. The observation is properly explained by considering the in-plane spread of wave-vectors. This study thus offers new insights on the spinoptics and may provide a potential method to control light in optical nanodevices.

80 citations

Journal ArticleDOI
TL;DR: In this article, a rectangular section of the leaf is placed in the transverse plane in rectangular waveguide, and the magnitude and phase of the reflection coefficient are measured over the desired frequency band using a vector network analyzer.
Abstract: A practical technique for measuring the dielectric constant of vegetation leaves and similarly thin materials is presented. A rectangular section of the leaf is placed in the transverse plane in rectangular waveguide, and the magnitude and phase of the reflection coefficient are measured over the desired frequency band using a vector network analyzer. By treating the leaf as an infinitesimally thin resistive sheet, an explicit expression for its dielectric constant is obtained in terms of the reflection coefficient. Because of the thin-sheet approximation, however, this approach is valid only at frequencies below 1.5 GHz. To extend the technique to higher frequencies, higher-order approximations are derived and their accuracies are compared to the exact dielectric-slab solution. For a material whose thickness is 0.5 mm or less, the proposed technique was found to provide accurate values of its dielectric constant up to frequencies of 12 GHz or higher. >

79 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
20231,178
20222,308
2021385
2020597
2019709
2018654