Spectral analysis of time-dependent impact force in high-speed liquid droplet impact

IF 1.9 3区工程技术 Q1 NUCLEAR SCIENCE & TECHNOLOGY

Annals of Nuclear Energy Pub Date : 2025-02-05 DOI:10.1016/j.anucene.2025.111216

Kei Fujisawa

引用次数: 0

Abstract

High-speed liquid droplet impacts are a fundamental problem in various engineering applications. This study addresses the decomposition of the time-dependent impact force during high-speed [O (100 m/s)] liquid droplet impingement (LDI). The force was decomposed into low (transient force) and high-frequency components (oscillatory force) via dynamic mode decomposition (DMD), and the effect of varying the impact Mach number on the spectral characteristics of the time-dependent impact force was examined. The frequency of the oscillatory force during high-speed LDI was analyzed for various impact Mach numbers, and a simple model was presented. The results provide valuable insight into the time-dependent impact force during high-speed LDI.

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来源期刊

Annals of Nuclear Energy 工程技术-核科学技术

CiteScore

4.30

自引率

21.10%

发文量

632

审稿时长

7.3 months

期刊介绍： Annals of Nuclear Energy provides an international medium for the communication of original research, ideas and developments in all areas of the field of nuclear energy science and technology. Its scope embraces nuclear fuel reserves, fuel cycles and cost, materials, processing, system and component technology (fission only), design and optimization, direct conversion of nuclear energy sources, environmental control, reactor physics, heat transfer and fluid dynamics, structural analysis, fuel management, future developments, nuclear fuel and safety, nuclear aerosol, neutron physics, computer technology (both software and hardware), risk assessment, radioactive waste disposal and reactor thermal hydraulics. Papers submitted to Annals need to demonstrate a clear link to nuclear power generation/nuclear engineering. Papers which deal with pure nuclear physics, pure health physics, imaging, or attenuation and shielding properties of concretes and various geological materials are not within the scope of the journal. Also, papers that deal with policy or economics are not within the scope of the journal.