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DOI: 10.14489/vkit.2026.09.pp.022-032
Расулов А. М., Иброхимов Н. И. АЛГОРИТМЫ МОДЕЛИРОВАНИЯ МЕТАЛЛИЧЕСКИХ КЛАСТЕРОВ НА ОСНОВЕ МЕТОДА МОЛЕКУЛЯРНОЙ ДИНАМИКИ (с. 22-32)
Аннотация. В данном исследовании геометрические характеристики металлических кластеров меди и серебра на атомистическом уровне смоделированы методом молекулярной динамики с использованием компьютерного моделирования. Для расчета межатомных взаимодействий применялся потенциал Embedded Atom Method. Вычислительные эксперименты выполнены с использованием программного пакета Large-scale Atomic/Molecular Massively Parallel Simulator, разработанного Sandia National Laboratories. Расчетные процессы осуществлялись в среде высокопроизводительных вычислений на основе параллельной архитектуры MPI (Message Passing Interface) – OpenMP. Визуализация моделей кластеров выполнена с использованием программного обеспечения JMol. При формировании моделей кластеров радиус и объем рассчитывались на основе сферической геометрии. В рамках исследования сопоставлены значения радиуса, диаметра и объема для кластеров с числом атомов в диапазоне 145…150. Установлено, что с увеличением числа атомов форма кластера приближается к форме, близкой к сферической. Результаты моделирования показали, что при одинаковом числе атомов кластеры серебра обладают бо́льшими геометрическими размерами по сравнению с кластерами меди. Полученные данные служат методической основой для анализа размерно-зависимых геометрических изменений кластеров и дальнейшего детального исследования их термодинамических свойств.
Ключевые слова: компьютерное моделирование; метод молекулярной динамики; компьютерные модели; метод погруженного атома.
Rasulov A. M., Ibrokhimov N. I. ALGORITHMS FOR MODELING METAL CLUSTERS USING MOLECULAR DYNAMICS (pp. 22-32)
Abstract. In this study, the geometric characteristics of copper and silver metallic clusters at the atomistic level were modeled using the molecular dynamics method within a computational framework. Interatomic interactions were described using the Embedded Atom Method (EAM) potential. Computational experiments were carried out employing the LAMMPS (Large-scale Atomic/Molecular Massively Parallel Simulator) software package developed by Sandia National Laboratories. The simulations were performed in a high-performance computing (HPC) environment based on a hybrid parallel MPI (Message Passing Interface)-OpenMP architecture. Cluster models were visualized using the JMol software. During cluster construction, the radius and volume were calculated assuming spherical geometry. The radius, diameter, and volume were systematically compared for clusters containing 145 – 150 atoms. It was established that, with increasing number of atoms, the cluster shape progressively approaches spherical geometry. The simulation results showed that, for an equal number of atoms, Ag clusters exhibit larger geometric dimensions than Cu clusters, which is attributed to the larger lattice parameter of silver. The obtained findings provide a methodological basis for analyzing size-dependent geometric variations of metallic clusters and for further in-depth investigations of their thermodynamic properties.
Keywords: Computer simulation; Molecular dynamics method; Computational models; Embedded Atom Method.
А. М. Расулов, Н. И. Иброхимов (Ферганский государственный технический университет, Фергана, Узбекистан) E-mail:
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A. M. Rasulov, N. I. Ibrokhimov (Fergana State Technical University, Fergana, Uzbekistan) E-mail:
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