Parallel Software for Simulation of Nonlinear Processes in Technical Microsystems

Polyakov, S. V.; Подрыга, В. О.; Puzyrkov, D. V.; Kudryashova, T. A.

doi:10.1007/978-3-319-55669-7_15

Cited by 2 publications

(5 citation statements)

References 11 publications

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“…Parallel implementation of the above numerical techniques was presented in [Podryga et al, 2020;Polyakov et al, 2016]. In this work, we used these algorithms and a set of programs oriented on supercomputer with central node architecture.…”

Section: Numerical Analysis Methods and Software Implementationmentioning

confidence: 99%

“…Using a microscopic level model, the processes of establishing equilibrium in a metal [Podryga, Polyakov, 2015;Podryga et al, 2015] and in a gas [Podryga et al, 2015] were previously investigated. In [Podryga, 2017;Podryga, Polyakov, 2016;Podryga et al, 2020], the properties of nitrogen and other gases were calculated, and the dependences of kinetic coefficients on temperature were refined.…”

Section: Combination Of Modelsmentioning

confidence: 99%

“…If we are talking about multiscale modeling based on a combination of macro-and microscopic models, then the best, albeit computationally intensive, calculation option is to select boundary layers and carry out molecular calculations in them, followed by matching solutions at the interface. In our works, we used both approaches [Podryga, 2016;Kudryashova et al, 2018].…”

Section: т 14 № 4 с 781-794mentioning

confidence: 99%

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A study of nonlinear processes at the interface between gas flow and the metal wall of a microchannel

Polyakov¹,

Podryga²

2022

CRM

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Работа посвящена исследованию влияния нелинейных процессов в пограничном слое на общий характер течений газа в микроканалах технических систем. Подобное исследование актуально для задач нанотехнологий. Одной из важных задач в этой сфере является анализ потоков газа в микроканалах в случае переходных и сверхзвуковых течений. Результаты этого анализа важны для техники газодинамического напыления и для синтеза новых наноматериалов. Из-за сложности реализации полномасштабных экспериментов на микро-и наномасштабах они чаще всего заменяются компьютерным моделированием. Эффективность компьютерного моделирования достигается как за счет использования новых многомасштабных моделей, так и за счет сочетания сеточных методов и методов частиц. В данной работе мы используем метод молекулярной динамики. Он был применен для исследования установления газового микротечения в металлическом канале. В качестве газовой среды был выбран азот. Металлические стенки микроканалов состояли из атомов никеля. В численных экспериментах были рассчитаны коэффициенты аккомодации на границе между течением газа и металлической стенкой. Исследование микросистемы в пограничном слое позволило сформировать многокомпонентную макроскопическую модель граничных условий. Эта модель была интегрирована в макроскопическое описание течения на основе системы квазигазодинамических уравнений. На основе такой преобразованной газодинамической модели были проведены расчеты микротечения в реальной микросистеме. Результаты были сопоставлены с классическим расчетом течения, не учитывающим нелинейные процессы в пограничном слое. Сравнение показало необходимость использования разработанной модели граничных условий и ее интеграции с классическим газодинамическим подходом.Ключевые слова: газодинамические микротечения в каналах с реальной структурой стенки, многомасштабное математическое моделирование, задача о граничных условиях, комбинация микроскопического и макроскопического подходов, параллельные вычисления Работа поддержана РНФ (проект № 21-71-20054). Расчеты проводились на гибридном суперкомпьютере К-60, установленном в Суперкомпьютерном центре коллективного пользования ИПМ им. М. В. Келдыша РАН.

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Section: Numerical Analysis Methods and Software Implementationmentioning

confidence: 99%

Section: Combination Of Modelsmentioning

confidence: 99%

Section: т 14 № 4 с 781-794mentioning

confidence: 99%

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A study of nonlinear processes at the interface between gas flow and the metal wall of a microchannel

Polyakov¹,

Podryga²

2022

CRM

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“…The architecture of the platform and the individual components were described in sufficient detail in [1][2][3]. The application part of the service was represented by the parallel program Flow and Particles [4][5][6], intended for multiscale molecular modeling of processes of interacting gas particles and the walls of microchannels of technical systems. However, in connection with the evolution of this application to the scale of the software package and the availability of other software tools which the developers had, including the GIMM NANO [7] software, the problem of integrating such programs into large systems and/or environments appeared.…”

Section: Introductionmentioning

confidence: 99%

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confidence: 99%

Cloud Service for Solution of Promising Problems of Nanotechnology

Kornilina

Подрыга

Polyakov

et al. 2017

JSFI

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The paper presents the problem of creating a cloud service designed to solve promising nanotechnology problems on supercomputer systems. The motivation for creating such a service was the need to integrate ideas, knowledge and computing technologies related to this applied problem, as well as the need to involve specialists in solving problems of this type. The preliminary result of the work is a prototype of the cloud environment, implemented as a KIAM Multilogin service and an application software accessible from users virtual machines. The first applications of the service were the software packages GIMM NANO and Flow and Particles, designed to solve the actual problems of nanoelectronics, laser nanotechnology, multiscale problems of applied gas dynamics. The implementation of the service took into account such aspects as support for parallel computations on the park of remote supercomputers, improving the efficiency of parallelization, very large data sets processing, visualization of supercomputer modeling results. With the help of the implemented service, it was possible to optimize the process of solving the applied problems associated with calculating the parameters of gas-dynamic flows in the microchannels of industrial spraying systems. In particular, it was possible to carry out a series of studies devoted to the analysis of gas-dynamic processes at gas-metal boundary. In these studies it was shown that in the presence of microcapillaries in a technical system, it is necessary to use direct modeling of gas dynamic processes on the basis of the first principles in the Knudsen layers, for example, using molecular dynamics methods.Keywords: cloud service, virtualization, supercomputer modeling in nanotechnology problems, visualization. IntroductionThe present work is devoted to the development of applied cloud services intended for solving complex nanotechnology problems by computer methods. Fundamental nature and relevance of the common problem comprise the fact that at present in context of the introduction of nanotechnology in many industries there is an urgent need to combine various mathematical approaches, information and computing resources into a unified tool of computer and supercomputer modeling. The most successful way of such an association is to create relevant cloud environments and services in which each user can have access to all possible information materials, modeling programs, computing resources and industrial CAD.The specific task is to create a cloud service using heterogeneous clusters and supercomputers for multiscale modeling of nonlinear processes in polydisperse multicomponent media used in the implementation of industrial nanotechnologies. To solve the problem, the KIAM Multilogin cloud platform has been developed and implemented in the previous two years, it allows accessing the created modeling environment. The architecture of the platform and the individual components were described in sufficient detail in [1][2][3]. The application part of the service was represented by t...

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Parallel Software for Simulation of Nonlinear Processes in Technical Microsystems

Cited by 2 publications

References 11 publications

A study of nonlinear processes at the interface between gas flow and the metal wall of a microchannel

A study of nonlinear processes at the interface between gas flow and the metal wall of a microchannel

Cloud Service for Solution of Promising Problems of Nanotechnology

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