{"title":"Numerical Simulation of a Turbulent Gas Flow over a Wavy Surface","authors":"Yu. S. Apostol, I. S. Vozhakov","doi":"10.1134/S1990478923020011","DOIUrl":null,"url":null,"abstract":"<p> We use the <span>OpnFoam</span>\npackage to numerically study the turbulent flow over a wavy surface for various values of the\namplitude and wavelength of the perturbation of the channel wall. The RANS and LES models\nare used to describe turbulent characteristics. The Reynolds number in the flow is 20 000. The\naverage profiles of velocities and shear stresses on the channel wall are obtained. The values of the\namplitude and phase shift for perturbations of the shear stress are calculated for various\ngeometrical parameters of the channel. Comparison with the theoretical model and experimental\nresults is carried out.\n</p>","PeriodicalId":607,"journal":{"name":"Journal of Applied and Industrial Mathematics","volume":"17 2","pages":"235 - 241"},"PeriodicalIF":0.5800,"publicationDate":"2023-08-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Applied and Industrial Mathematics","FirstCategoryId":"1085","ListUrlMain":"https://link.springer.com/article/10.1134/S1990478923020011","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"Engineering","Score":null,"Total":0}
引用次数: 0
Abstract
We use the OpnFoam
package to numerically study the turbulent flow over a wavy surface for various values of the
amplitude and wavelength of the perturbation of the channel wall. The RANS and LES models
are used to describe turbulent characteristics. The Reynolds number in the flow is 20 000. The
average profiles of velocities and shear stresses on the channel wall are obtained. The values of the
amplitude and phase shift for perturbations of the shear stress are calculated for various
geometrical parameters of the channel. Comparison with the theoretical model and experimental
results is carried out.
期刊介绍：
Journal of Applied and Industrial Mathematics is a journal that publishes original and review articles containing theoretical results and those of interest for applications in various branches of industry. The journal topics include the qualitative theory of differential equations in application to mechanics, physics, chemistry, biology, technical and natural processes; mathematical modeling in mechanics, physics, engineering, chemistry, biology, ecology, medicine, etc.; control theory; discrete optimization; discrete structures and extremum problems; combinatorics; control and reliability of discrete circuits; mathematical programming; mathematical models and methods for making optimal decisions; models of theory of scheduling, location and replacement of equipment; modeling the control processes; development and analysis of algorithms; synthesis and complexity of control systems; automata theory; graph theory; game theory and its applications; coding theory; scheduling theory; and theory of circuits.
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