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Input Data Requirements for Lagrangian Trajectory Models
2013
Bulletin of The American Meteorological Society - (BAMS)
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The authors wish to thank the AGU and the organizers of the Chapman conference for providing a stimulating venue to discuss these issues. ...
Recent examples of the use of Lagrangian methods include predicting the transport and dispersion of radioactive materials released following the accidents at the Fukushima nuclear power station in Japan ...
Despite this eventual loss of predictability, like Eulerian models, Lagrangian methods have proven to be quite powerful, particularly for understanding dispersion, stirring, and mixing in the atmosphere ...
doi:10.1175/bams-d-12-00076.1
fatcat:vqrjelzdcncevbtoktjfrzbgji
Input Data Requirements for Lagrangian Trajectory Models
2013
Bulletin of The American Meteorological Society - (BAMS)
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Recent examples of the use of Lagrangian methods include predicting the transport and dispersion of radioactive materials released following the accidents at the Fukushima nuclear power station in Japan ...
Despite this eventual loss of predictability, like Eulerian models, Lagrangian methods have proven to be quite powerful, particularly for understanding dispersion, stirring, and mixing in the atmosphere ...
T h e A m e r i c A n m e T e o r o l o g i c A l S o c i e T y
Online Glossary of Meteorology Also available in hardcover and CD formats at the AMS Bookstore, www.ametsoc.org/amsbookstore. http://glossary.ametsoc.org ...
doi:10.1175/bams-d-12-00076
fatcat:e5lxbumcnzboza64ftsqqp6czi
Optical flow models as an open benchmark for radar-based precipitation nowcasting (rainymotion v0.1)
2019
Geoscientific Model Development
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</strong> Quantitative precipitation nowcasting (QPN) has become an essential technique in various application contexts, such as early warning or urban sewage control. ...
In that context, "optical flow" has become one of the most popular tracking techniques. ...
Georgy Ayzel was financially supported by Geo.X, the Research Network for Geosciences in Berlin and Potsdam. ...
doi:10.5194/gmd-12-1387-2019
fatcat:blypr55y3bdb7pbjbimgrzsoqi
Interactive Visualization of Time-Varying Flow Fields Using Particle Tracing Neural Networks
[article]
2024
arXiv
pre-print
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2024 pre-print arXiv:2312.14973v2 fatcat:6e3z7npelnhvrcecptkkcjrl7aOther Versions
First, we evaluate the performance of DNN models to accurately trace particles in various settings, including 2D and 3D time-varying flow fields, flow fields from multiple applications, flow fields with ...
Han et al. (2021) first proposed a DNN-based approach to learn Lagrangian representations and demonstrated accurate particle tracing for an analytic 2D flow field. ...
The findings, as depicted in Fig. 6 , indicate that reducing the number of flow maps per model does not improve training accuracy when employing the Lagrangian long method. ...
arXiv:2312.14973v3
fatcat:42id3lutsbhpjkyarsoay46hxe
Using proper orthogonal decomposition to solve heat transfer process in a flat tube bank fin heat exchanger
2017
Advances in Geo-Energy Research
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With these coefficients, interpolation method was used to calculate the coefficients on predicting conditions. ...
The calculating results of the finite volume method (FVM) were adopted as the snapshot samples. ...
Acknowledgments The study was supported by the National Science Foundation of China (Nos. 51476073, 51576210 and 51266004) Open Access This article is distributed under the terms and conditions of the ...
doi:10.26804/ager.2017.03.03
fatcat:g4dxehazhfepvfab3j75w5k5g4
Research on SMC-Predictive DPC Strategy for Vienna Rectifier
2018
IEICE Electronics Express
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To solve the problems above, this paper proposes an improved hybrid SMC-PDPC control scheme for Vienna rectifier, which uses lagrangian liner interpolation to predict the next sampling power value with ...
Predictive direct power control (PDPC) and sliding mode control (SMC) have been proposed as effective schemes for three-phase rectifiers. ...
The calculation is relatively simple and has high accuracy within a certain range. In this paper Lagrangian-based interpolation method is used to predict the reference of active power at k þ 2 time. ...
doi:10.1587/elex.15.20180600
fatcat:3yuj3ql4gzhkhbwd2cqvl5cvta
Implementation of a discrete Immersed Boundary Method in OpenFOAM
[article]
2016
arXiv
pre-print
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on the Eulerian Cartesian mesh through an ad-hoc body force evaluated on a set of Lagrangian markers. ...
In this paper, the Immersed Boundary Method (IBM) proposed by Pinelli is implemented for finite volume approximations of incompressible Navier-Stokes equations solutions in the open source toolbox OpenFOAM ...
This work was supported by the FUI N • 15 URABAILA granted in the frame of the Energy Climate Program of the french government. ...
arXiv:1609.04364v1
fatcat:5ir7zryauvf3pb6rwcbmpriqc4
Immersed boundary finite element method for blood flow simulation
[article]
2020
arXiv
pre-print
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We further examine the accuracy and applicability of the proposed method by considering flow within complex geometries, such as blood flow in aneurysmal vessels and the aorta, flow configurations which ...
We verify the accuracy of the numerical method using the analytical solution for Poiseuille flow in a cylinder. ...
Zhang and Zheng [19] developed an improved version of Mohd-Yusof's method by developing a bilinear interpolation/extrapolation function to interpolate force. ...
arXiv:2007.02082v1
fatcat:5ehbyrifmvdthkv6e2qih5fqwi
A review of radar-based nowcasting of precipitation and applicable machine learning techniques
[article]
2020
arXiv
pre-print
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This type of weather prediction has important applications for commercial aviation; public and outdoor events; and the construction industry, power utilities, and ground transportation services that conduct ...
A 'nowcast' is a type of weather forecast which makes predictions in the very short term, typically less than two hours - a period in which traditional numerical weather prediction can be limited. ...
Each is a potential source of predictability which could lead to improved skill compared to pure optical flow. ...
arXiv:2005.04988v1
fatcat:vmuc7u7rjffhhjzehoiys45wz4
Predicting multimedia traffic in wireless networks: A performance evaluation of cognitive techniques
2014
IISA 2014, The 5th International Conference on Information, Intelligence, Systems and Applications
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To this purpose, real traffic traces have been captured, including multiple multimedia traffic flows, so as to comparatively assess widely used methods in terms of accuracy. ...
This work focuses on the prediction concept as an autonomous, functional, and efficient process, where multiple cutting-edge methods are presented, modeled, and thoroughly assessed. ...
Extrapolation Techniques Both interpolation and extrapolation methods are quite popular on fitting smooth continuous functions through discrete data. ...
doi:10.1109/iisa.2014.6878802
dblp:conf/iisa/SarigiannidisALAL14
fatcat:34lkjkvao5hill6bvw42xgf7m4
An immersed boundary-based large-eddy simulation approach to predict the performance of vertical axis tidal turbines
2017
Computers & Fluids
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Please cite this article as: Pablo Ouro Barba, Thorsten Stoesser, An immersed boundary-based largeeddy simulation approach to predict the performance of vertical axis tidal turbines, Computers and Fluids ...
Application of the IB method to vertical axis tidal turbines For the present application of the IB method to vertical axis tidal turbines, the turbine blade geometry is discretised into a set of Lagrangian ...
Section 4 shows an in-depth study of a VATT subjected to turbulent flow: error convergence of the LES-IB method, 110 hydrodynamic coefficients and power performance compared to the results from RANS-based ...
doi:10.1016/j.compfluid.2017.04.003
fatcat:e5fptjhf2faynl6jysznchkhwe
D1.1 Hybrid Eulerian-Lagrangian Aerodynamic Model
2021
Zenodo
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The inherent complexity of this dynamic system quickly limits the applicability of closed-form expressions and necessitates simulation with numerical methods. ...
The turbine must be capable of safely operating within a broad load envelope, in a number of operating states while consistently generating an optimal electrical output. ...
Following the method described in van Garrel [1] , barycentric Lagrangian interpolation is used. ...
doi:10.5281/zenodo.6958027
fatcat:nbzrln5mbvfdrkqw5wk3phxsum
Toward a Fully Lagrangian Atmospheric Modeling System
2008
Monthly Weather Review
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An average of 20 particles in each cell of an 11 ϫ 20 staggered grid system are required to predict the two-dimensional sea-breeze circulation, which accounts for a total of about 4400 particles in the ...
A fully Lagrangian numerical model is, therefore, presented for calculating atmospheric flows. ...
The fully Lagrangian numerical methods-in which particles are tagged with physical properties of the fluid dynamical system-are often called "gridless" particle methods, making up a powerful class of computational ...
doi:10.1175/2008mwr2515.1
fatcat:skx3b5nyqfa33ilqdvmh7ubd3m
An arbitrary Lagrangian-Eulerian formulation for creeping flows and its application in tectonic models
1995
Geophysical Journal International
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A regridding algorithm allows the associated Lagrangian motion and fields to be followed, and, in addition, coupled back to the Eulerian calculation of the flow. ...
The driving mechanism in the model corresponds to the near-rigid convergence and subduction of one mantle lithosphere beneath another in plane strain and this boundary condition forces flow in an overlying ...
This leads to the so-called updated Lagrangian (UL) method of numerical integration of the flow by which the mesh discretizing the medium is continuously updated in time to follow the last available prediction ...
doi:10.1111/j.1365-246x.1995.tb05908.x
fatcat:bgklnbprn5hbvbabllgbegu64m
CUBE: A scalable framework for large-scale industrial simulations
[article]
2018
arXiv
pre-print
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Our work also concerns efficient methods for handling the large amount of data produced by large-scale flow simulations, such as scalable parallel I/O, data compression and in-situ processing. ...
Writing high performance solvers for engineering applications is a delicate task. These codes are often developed on an application to application basis, highly optimized to solve a certain problem. ...
Acknowledgments This research was supported by MEXT as "Priority Issue on Post-K computer" (Development of innovative design and production processes) and used computational resources of the K computer ...
arXiv:1808.04099v1
fatcat:cenwmeexs5a6npg64ie6yirmgy
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