{"title":"Dynamics and Structure of Periodic Flows: Ligaments, Gravity and Acoustic Waves","authors":"Yu. D. Chashechkin, A. A. Ochirov","doi":"10.1134/s1063784224700506","DOIUrl":null,"url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>The structural components of periodic flows of 2D and 3D viscous incompressible and slightly compressible fluids are classified. The classification is based on the properties of complete solutions to a linearized system, which have been constructed by the methods of the singular perturbation theory. The regular parts of the resulting complete solutions describe waves and singular ones—ligaments (fine components forming the structure of the flows). Dispersion relations have been obtained for different types of periodic flows, which describe proper (surface or internal gravity and acoustic) waves as well as accompanying ligaments. The problems of measuring the dynamics and structure of flows in laboratory and natural conditions are considered. The effect of ligaments on the results of measurements of physical quantities in the fluid flows are estimated.</p>","PeriodicalId":783,"journal":{"name":"Technical Physics","volume":null,"pages":null},"PeriodicalIF":1.1000,"publicationDate":"2024-08-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Technical Physics","FirstCategoryId":"101","ListUrlMain":"https://doi.org/10.1134/s1063784224700506","RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"PHYSICS, APPLIED","Score":null,"Total":0}
引用次数: 0
Abstract
The structural components of periodic flows of 2D and 3D viscous incompressible and slightly compressible fluids are classified. The classification is based on the properties of complete solutions to a linearized system, which have been constructed by the methods of the singular perturbation theory. The regular parts of the resulting complete solutions describe waves and singular ones—ligaments (fine components forming the structure of the flows). Dispersion relations have been obtained for different types of periodic flows, which describe proper (surface or internal gravity and acoustic) waves as well as accompanying ligaments. The problems of measuring the dynamics and structure of flows in laboratory and natural conditions are considered. The effect of ligaments on the results of measurements of physical quantities in the fluid flows are estimated.
期刊介绍：
Technical Physics is a journal that contains practical information on all aspects of applied physics, especially instrumentation and measurement techniques. Particular emphasis is put on plasma physics and related fields such as studies of charged particles in electromagnetic fields, synchrotron radiation, electron and ion beams, gas lasers and discharges. Other journal topics are the properties of condensed matter, including semiconductors, superconductors, gases, liquids, and different materials.
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