MPIBased Computational Algorithm for Modeling a Cylindrical Catalyst Grain During Oxidative Regeneration Научная публикация
Конференция 
Parallel Computational Technologies : 17th International Conference 2830 мар. 2023 , Saint Petersburg 


Сборник  Parallel ComputationalTechnologies: 17th International Conference, PCT 2023, Saint Petersburg, Russia, March 28–30, 2023 Сборник, Springer Nature Switzerland AG. Cham, Switzerland.2023. 373 c. ISBN 9783031388644. 

Вых. Данные  Год: 2023, Страницы: 336350 Страниц : 15 DOI: 10.1007/9783031388644_24  
Ключевые слова  Oxidative regeneration; Nonlinear model; Chemical kinetics; MPI technology; Numerical methods  
Авторы 


Организации 

Информация о финансировании (2)
1  Министерство науки и высшего образования Российской Федерации  023920210014 
2  Министерство науки и высшего образования Российской Федерации  FMRS20220078 
Реферат:
The article is devoted to the development of an efficient parallel algorithm for the numerical simulation of a cylindrical catalyst grain during the process of burning coke residua off the catalyst. The threedimensional problem is reduced to a task in an axisymmetric formulation. The mathematical model of the process consists of a system of nonlinear parabolic partial differential equations and takes into account the mass transfer (diffusion and Stefan flow), the heat transfer, and chemical reactions. Reaction’s effect is included as a source term in the parabolic equations. The effective thermophysical characteristics are interpolated by timedependent polynomials in conformity with reference data. The simulated processes occur with different characteristic times, hence the high degree of stiffness in the studied system. The model’s difference analog is given in a dimensionless form. We use an approach based on splitting by physical processes. Also, we isolate the solution of the chemical kinetics equations into a separate block. The chemical kinetics equations are stiff and require specialized solution methods. In the present research, we choose the Radau IIA method for this. For the equations of mass transfer and heat transfer, we use the integrointerpolation method. The numerical algorithm is implemented in C++ using MPI technology. The twodimensional computational domain is divided into equal spatial cells. Each processor stores the data for computing the rates of chemical reactions and effective thermophysical characteristics. It should be noted that only boundary conditions are involved in the interprocessor exchange, which significantly reduces the program runtime. We investigate the efficiency of the developed parallel algorithm on the example of the process of oxidative regeneration of a cylindrical catalyst grain. We provide the corresponding results on the speedup of computations on several processors with different numbers of cells, as well as the graphs of substance concentrations and the temperature of the catalyst grain under various process conditions.
Библиографическая ссылка:
Yazovtseva O.S.
, Gubaydullin I.M.
, Peskova E.E.
, Usmanova A.A.
, Zagoruiko A.N.
MPIBased Computational Algorithm for Modeling a Cylindrical Catalyst Grain During Oxidative Regeneration
В сборнике Parallel ComputationalTechnologies: 17th International Conference, PCT 2023, Saint Petersburg, Russia, March 28–30, 2023. – Springer Nature Switzerland AG., 2023. – C.336350. – ISBN 9783031388644. DOI: 10.1007/9783031388644_24 Scopus
MPIBased Computational Algorithm for Modeling a Cylindrical Catalyst Grain During Oxidative Regeneration
В сборнике Parallel ComputationalTechnologies: 17th International Conference, PCT 2023, Saint Petersburg, Russia, March 28–30, 2023. – Springer Nature Switzerland AG., 2023. – C.336350. – ISBN 9783031388644. DOI: 10.1007/9783031388644_24 Scopus
Даты:
Опубликована online:  25 июл. 2023 г. 
Идентификаторы БД:
Scopus  2s2.085172680336 
OpenAlex  W4385211947 
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Пока нет цитирований