{"title":"Nonlocal Absorbing Boundary Conditions in Calculation of Internal Gravity Waves Excited by Collapse of Partially Mixed Stratified Medium","authors":"V. V. Bulatov","doi":"10.1134/S001546282360308X","DOIUrl":null,"url":null,"abstract":"<p>The nonlocal boundary conditions are formulated for mathematical modeling of wave dynamics of stratified media; these conditions take into account two substantial physical circumstances: the linear theory is valid at large distances from perturbation sources and there are no other sources of wave perturbations outside the mixing zone of the stratified medium. Using these boundary conditions allows correctly describing outgoing linear internal gravity waves excited by a region of partially mixed stratified medium. It is shown that with the results it is possible to determine the further dynamics of internal gravity waves far away from these perturbation sources by a given distribution of parameters of the stratified medium, assuming the validity of using the linear model of wave dynamics at large distances.</p>","PeriodicalId":560,"journal":{"name":"Fluid Dynamics","volume":"58 2 supplement","pages":"S189 - S199"},"PeriodicalIF":1.0000,"publicationDate":"2024-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Fluid Dynamics","FirstCategoryId":"5","ListUrlMain":"https://link.springer.com/article/10.1134/S001546282360308X","RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"MECHANICS","Score":null,"Total":0}
引用次数: 0
Abstract
The nonlocal boundary conditions are formulated for mathematical modeling of wave dynamics of stratified media; these conditions take into account two substantial physical circumstances: the linear theory is valid at large distances from perturbation sources and there are no other sources of wave perturbations outside the mixing zone of the stratified medium. Using these boundary conditions allows correctly describing outgoing linear internal gravity waves excited by a region of partially mixed stratified medium. It is shown that with the results it is possible to determine the further dynamics of internal gravity waves far away from these perturbation sources by a given distribution of parameters of the stratified medium, assuming the validity of using the linear model of wave dynamics at large distances.
期刊介绍：
Fluid Dynamics is an international peer reviewed journal that publishes theoretical, computational, and experimental research on aeromechanics, hydrodynamics, plasma dynamics, underground hydrodynamics, and biomechanics of continuous media. Special attention is given to new trends developing at the leading edge of science, such as theory and application of multi-phase flows, chemically reactive flows, liquid and gas flows in electromagnetic fields, new hydrodynamical methods of increasing oil output, new approaches to the description of turbulent flows, etc.
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