High-Accuracy Approximation of High-Rank Derivatives: Isotropic Finite Differences Based on Lattice-Boltzmann Stencils

Autor: Keijo Kalervo Mattila, Luiz Adolfo Hegele Júnior, Paulo Cesar Philippi

Publikováno v: The Scientific World Journal, Vol 2014 (2014)

We propose isotropic finite differences for high-accuracy approximation of high-rank derivatives. These finite differences are based on direct application of lattice-Boltzmann stencils. The presented finite-difference expressions are valid in any dim

Externí odkaz: https://doaj.org/article/b948b6403d324a6eaa79d6c53887db2d

Thermal Analysis of the Wellbore System During Drilling Operations Using an Improved Drilling Simulator

Autor: Mostafa Magdy Abdelhafiz, Joachim Oppelt, Luiz Adolfo Hegele

Publikováno v: Day 3 Wed, November 02, 2022.

Prediction of the wellbore fluids and formation temperatures during well construction is an essential step for efficient drilling operation. This work presents the applications of an improved comprehensive drilling simulator for predicting the wellbo

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::1ce3ce458aafb361210e72b4a637f96b
https://doi.org/10.2118/211721-ms

Moments-based method for boundary conditions in the lattice Boltzmann framework: A comparative analysis for the lid driven cavity flow

Autor: Paulo Cesar Philippi, Luiz Adolfo Hegele, R.L.M. Bazarin, Amanda Randles

Publikováno v: Computers & Fluids. 230:105142

Dealing with boundary conditions (BC) was ever considered a puzzling question in the lattice Boltzmann (LB) method. The most popular BC models are based on Ad-Hoc rules and, although these BC models were shown to be suitable for low-order LB equation

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::64f0c1b7eb507df4e905e8932df1969a
https://doi.org/10.1016/j.compfluid.2021.105142

Moment representation in the lattice Boltzmann method on massively parallel hardware

Autor: Madhurima Vardhan, Erik W. Draeger, Amanda Randles, Luiz Adolfo Hegele, John Gounley

Publikováno v: SC

The widely-used lattice Boltzmann method (LBM) for computational fluid dynamics is highly scalable, but also significantly memory bandwidth-bound on current architectures. This paper presents a new regularized LBM implementation that reduces the memo

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::76e00ba0bb8e9742ba7bc9c73cc0ea79
https://doi.org/10.1145/3295500.3356204

High-Reynolds-number turbulent cavity flow using the lattice Boltzmann method

Autor: Daniel F. Puleri, Mauro Sbragaglia, Amanda Randles, Keijo Mattila, Andrea Scagliarini, Luiz Adolfo Hegele, Paulo Cesar Philippi, John Gounley

Publikováno v: Physical review. E
98 (2018). doi:10.1103/PhysRevE.98.043302
info:cnr-pdr/source/autori:Hegele Jr, L. A.; Scagliarini, A.; Sbragaglia, M.; Mattila, K. K.; Philippi, P. C.; Puleri, D. F.; Gounley, J.; Randles, A./titolo:High-Reynolds-number turbulent cavity flow using the lattice Boltzmann method/doi:10.1103%2FPhysRevE.98.043302/rivista:Physical review. E (Print)/anno:2018/pagina_da:/pagina_a:/intervallo_pagine:/volume:98

We present a boundary condition scheme for the lattice Boltzmann method that has significantly improved stability for modeling turbulent flows while maintaining excellent parallel scalability. Simulations of a three-dimensional lid-driven cavity flow

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f667126a3a89e7e3e7fc27b47f5ff798
https://publications.cnr.it/doc/395784