scholarly journals Tetrahedral grid generation for supercomputer modeling of flow past aerospace objects

Author(s):  
М.К. Ермаков

Для генерации сверхподробных тетраэдральных сеток объемом до 1 миллиарда ячеек используется открытое ПО Gmsh. Пакет позволяет строить автоматически указанные сетки на ПК в параллельном режиме OpenMP за время, не превышающее 1 часа при использовании ПК Intel i7–9700K. Описан опыт применения пакета для построения пространственных сеток для задач обтекания аэрокосмических объектов. Приведены примеры суперкомпьютерных расчетов обтекания аэрокосмических объектов. Gmsh open source software is used to generate ultra-detailed tetrahedral grids of up to 1 billion cells. The package allows one to build automatically specified grids on a PC in parallel OpenMP mode in a time not exceeding 1 hour when using an Intel i7–9700K PC. The experience of using the package to construct the spatial grids for problems of flows past aerospace objects is described. Several examples of supercomputer calculations for the flows past aerospace objects are given.

Author(s):  
Passakorn PHANNACHITTA ◽  
Akinori IHARA ◽  
Pijak JIRAPIWONG ◽  
Masao OHIRA ◽  
Ken-ichi MATSUMOTO

Author(s):  
Christina Dunbar-Hester

Hacking, as a mode of technical and cultural production, is commonly celebrated for its extraordinary freedoms of creation and circulation. Yet surprisingly few women participate in it: rates of involvement by technologically skilled women are drastically lower in hacking communities than in industry and academia. This book investigates the activists engaged in free and open-source software to understand why, despite their efforts, they fail to achieve the diversity that their ideals support. The book shows that within this well-meaning volunteer world, beyond the sway of human resource departments and equal opportunity legislation, members of underrepresented groups face unique challenges. The book explores who participates in voluntaristic technology cultures, to what ends, and with what consequences. Digging deep into the fundamental assumptions underpinning STEM-oriented societies, the book demonstrates that while the preferred solutions of tech enthusiasts—their “hacks” of projects and cultures—can ameliorate some of the “bugs” within their own communities, these methods come up short for issues of unequal social and economic power. Distributing “diversity” in technical production is not equal to generating justice. The book reframes questions of diversity advocacy to consider what interventions might appropriately broaden inclusion and participation in the hacking world and beyond.


2015 ◽  
Vol 4 (1) ◽  
pp. 1224-1228 ◽  
Author(s):  
Debasish Chakraborty ◽  
◽  
Debanjan Sarkar ◽  
Shubham Agarwal ◽  
Dibyendu Dutta ◽  
...  

MIS Quarterly ◽  
2019 ◽  
Vol 43 (3) ◽  
pp. 951-976
Author(s):  
Likoebe M. Maruping ◽  
◽  
Sherae L. Daniel ◽  
Marcelo Cataldo ◽  
◽  
...  

2019 ◽  
Vol 7 (2) ◽  
pp. 8-15
Author(s):  
Madanjit Singh ◽  
Munish Saini ◽  
Manevpreet Kaur

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