Results 251 to 260 of about 354,492 (314)

Fluid-solid coupled full-waveform inversion in the curvilinear coordinates for ocean-bottom cable data

, 2020
Marine seismic exploration with ocean-bottom cable technology is able to record P- and S-wave information simultaneously. Elastic full-waveform inversion (EFWI) uses P- and S-waves to invert multiple parameters with adequate amplitude information and ...
Y. Qu, Z. Guan, Jinli Li, Zhenchun Li
semanticscholar   +1 more source

Describing Polytopal Rearrangements of Fluxional Molecules with Curvilinear Coordinates Derived from Normal Vibrational Modes - A Conceptual Extension of Cremer-Pople Puckering Coordinates.

Journal of Chemical Theory and Computation, 2020
In this work a new curvilinear coordinate system is presented for the comprehensive description of polytopal rearrangements of $N$-coordinate compounds ($N$ = 4-7) and systems containing an $N$-coordinate subunit.
Wenli Zou, Yunwen Tao, E. Kraka
semanticscholar   +1 more source

Boundary layer formulations in orthogonal curvilinear coordinates for flow over wind-generated surface waves

Journal of Fluid Mechanics, 2020
The development of the governing equations for fluid flow in a surface-following coordinate system is essential to investigate the fluid flow near an interface deformed by propagating waves. In this paper, the governing equations of fluid flow, including
K. Yousefi, F. Veron
semanticscholar   +1 more source

Curvilinear Multilane Merging and Platooning With Bounded Control in Curved Road Coordinates

IEEE Transactions on Vehicular Technology, 2022
Coordination of the Connected and Automated Vehicles (CAVs) is a demanding task in aspects of effective incorporation of road information with the control of vehicle motion states.
Jingkai Wu, Yafei Wang, Chengliang Yin
semanticscholar   +1 more source

A parallel high-order compressible flows solver with domain decomposition method in the generalized curvilinear coordinates system

International journal of numerical methods for heat & fluid flow, 2019
Purpose This paper aims to present the development of a highly parallel finite-difference computational fluid dynamics code in generalized curvilinear coordinates system.
A. Piquet, B. Zebiri, A. Hadjadj, Mostafa Safdari Shadloo   +3 more
semanticscholar   +1 more source

Comparison of curvilinear coordinates within vibrational structure calculations based on automatically generated potential energy surfaces.

Journal of Chemical Physics
For floppy molecules showing internal rotations and/or large amplitude motions, curvilinear internal coordinates are known to be superior to rectilinear normal coordinates within vibrational structure calculations.
Moritz Schneider, G. Rauhut
semanticscholar   +1 more source

Accurate Vibrational and Ro-Vibrational Contributions to the Properties of Large Molecules by a New Engine Employing Curvilinear Internal Coordinates and Vibrational Perturbation Theory to Second Order.

Journal of Chemical Theory and Computation
The unbiased comparison between theory and experiment requires approaches more sophisticated than the basic harmonic-oscillator rigid-rotor model, for taking into account vibrational averaging effects and ro-vibrational couplings in molecules of ...
M. Mendolicchio, V. Barone
semanticscholar   +1 more source

Orthogonal Curvilinear Coordinates

The Mathematical Gazette, 1966
Although the gradient of a scalar, and the curl and divergence of a vector can be obtained by various elementary methods in terms of curvilinear components and coordinate vectors, the corresponding results for the components of strain and the vector divergence of stress are usually obtained by specializing the formulae for covariant derivatives.
openaire   +2 more sources

Topographic elastic least‐squares reverse time migration based on vector P‐ and S‐wave equations in the curvilinear coordinates

Geophysical Prospecting, 2019
Elastic least‐squares reverse time migration has been applied to multi‐component seismic data to obtain high‐quality images. However, the final images may suffer from artefacts caused by P‐ and S‐wave crosstalk and severe spurious diffractions caused by ...
Y. Qu, Z. Guan, Zhenchun Li
semanticscholar   +1 more source

Bi-global stability analysis in curvilinear coordinates

The Physics of Fluids, 2019
A method is developed to solve biglobal stability functions in curvilinear systems which avoids reshaping of the airfoil or remapping the disturbance flow fields.
P. Ziadé, P. Sullivan
semanticscholar   +1 more source