ANALYSIS OF THE PROPAGATION OF OSCILLATORY PROCESSES IN A CHANNEL WITH A PERFORATED BARRIER

Author details
  • Perm National Research Polytechnic University, Perm, Russian Federation
  • Perm National Research Polytechnic University, Perm, Russian Federation
  • Perm National Research Polytechnic University, Perm, Russian Federation
  • Perm National Research Polytechnic University, Perm, Russian Federation

Abstract

The relevance of the research topic is due to the need to create structures with low noise levels. Understanding the oscillatory processes in channels can lead to improved quality of designed systems, which in turn will increase their competitiveness. Channels with perforated partitions are an element of a large number of engineering systems. The use of such structures filled with gases, such as hydrogen, is of interest in terms of transporting new energy sources and studying the behavior of gas when it interacts with a deformable barrier. The purpose of this research is to analyze the oscillatory processes that occur when gas interacts with a perforated structure.The research presented in this article is conducted using the ANSYS engineering analysis system, which allows for the modeling of these processes in 2FSI. The dependencies of pressure and displacement on time at various points of a model installation filled with hydrogen in the presence of obstacles, including those with perforations, are calculated. This article discusses the interaction of a gas-dynamic flow and a channel with one, two, or three deformable partitions on the characteristics of gas and structural vibrations. Three cases are considered: the partition closest to the source of vibrations does not have a hole, the hole in the partition has a diameter of 20 mm, and the hole in the partition has a diameter of 14 mm. The second and third partitions do not have a hole. An analysis of oscillatory processes in a model channel with perforated (or solid) partitions filled with hydrogen showed a significant effect of perforation on the system dynamics for different conditions of partition combination. The results and conclusions obtained during this analysis can serve as a basis for further experiments and developments in the fields of gas dynamics and aeroelasticity, as well as for the design of low-noise and vibration-resistant elements for hydrogen energy and acoustic systems.

Keywords

acousticshydrogen transportationenergy carriernoisevibrationsengineering analysis system2FSIgas channeloscillatory processeswave propagationnumerical modelinginteraction of gas with barriersound absorptionresonance.

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Article information

Published
29 December 2025
Issue date
29 December 2025
Issue
No. 6 (2025)
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