Asymptotical analysis of one dimensional gas dynamics equations

A method of averaging is developed for constructing a uniformly valid asymptotic solution for weakly nonlinear one dimensional gas dynamics systems. Using this method we give the averaged system, which disintegrates into independent equations for the non‐resonance systems. Conditions of the resonan...

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Main Authors: A. Krylovas, R. Čiegis
Format: Article
Language:English
Published: Vilnius Gediminas Technical University 2001-06-01
Series:Mathematical Modelling and Analysis
Subjects:
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Online Access:https://journals.vgtu.lt/index.php/MMA/article/view/9890
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spelling doaj-0d9074f6c20e4abebf2a78ca6989e86e2021-07-02T14:19:46ZengVilnius Gediminas Technical UniversityMathematical Modelling and Analysis1392-62921648-35102001-06-016110.3846/13926292.2001.9637151Asymptotical analysis of one dimensional gas dynamics equationsA. Krylovas0R. Čiegis1Vilnius Gediminas Technical University , Sauletekio al. 11, Vilnius, LT‐2040, LithuaniaVilnius Gediminas Technical University , Sauletekio al. 11, Vilnius, LT‐2040, Lithuania A method of averaging is developed for constructing a uniformly valid asymptotic solution for weakly nonlinear one dimensional gas dynamics systems. Using this method we give the averaged system, which disintegrates into independent equations for the non‐resonance systems. Conditions of the resonance for periodic and almost periodic solutions are presented. In the resonance case the averaged system is solved numerically. Some results of numerical experiments are given. Vienmačių dujų dinamikos lygčių asimptotinis sprendimo metodas Santrauka Darbe sukonstruotas asimptotinis skleidinys, kuris tolygiai aproksimuoja vienmačiu duju sprendini visame intervale t ≤ O(1/ϵ). Metodika remiasi anksčiau pasiūlytu lygčiu vidurkinimmo metodu. Surastos salygos, kada gautoji suvidurkinta diferencialiniu lygčiu sistema atsiskiria i tris nepriklausomas klampias Burgerso lygtis. Kai išpildytos rezonanso salygos, netiesiniu bangu saveika yra aprašoma integraliniais nariais. Pateiktos baigtiniu skirtumu schemos, aproksimuojančios tiek pradine diferencialiniu lygčiu sistema, tiek ir suvidurkintas lygtis. Atliktas skaičiavimo eksperimentas, patvirtinantis teorines išvadas. First Published Online: 14 Oct 2010 https://journals.vgtu.lt/index.php/MMA/article/view/9890-
collection DOAJ
language English
format Article
sources DOAJ
author A. Krylovas
R. Čiegis
spellingShingle A. Krylovas
R. Čiegis
Asymptotical analysis of one dimensional gas dynamics equations
Mathematical Modelling and Analysis
-
author_facet A. Krylovas
R. Čiegis
author_sort A. Krylovas
title Asymptotical analysis of one dimensional gas dynamics equations
title_short Asymptotical analysis of one dimensional gas dynamics equations
title_full Asymptotical analysis of one dimensional gas dynamics equations
title_fullStr Asymptotical analysis of one dimensional gas dynamics equations
title_full_unstemmed Asymptotical analysis of one dimensional gas dynamics equations
title_sort asymptotical analysis of one dimensional gas dynamics equations
publisher Vilnius Gediminas Technical University
series Mathematical Modelling and Analysis
issn 1392-6292
1648-3510
publishDate 2001-06-01
description A method of averaging is developed for constructing a uniformly valid asymptotic solution for weakly nonlinear one dimensional gas dynamics systems. Using this method we give the averaged system, which disintegrates into independent equations for the non‐resonance systems. Conditions of the resonance for periodic and almost periodic solutions are presented. In the resonance case the averaged system is solved numerically. Some results of numerical experiments are given. Vienmačių dujų dinamikos lygčių asimptotinis sprendimo metodas Santrauka Darbe sukonstruotas asimptotinis skleidinys, kuris tolygiai aproksimuoja vienmačiu duju sprendini visame intervale t ≤ O(1/ϵ). Metodika remiasi anksčiau pasiūlytu lygčiu vidurkinimmo metodu. Surastos salygos, kada gautoji suvidurkinta diferencialiniu lygčiu sistema atsiskiria i tris nepriklausomas klampias Burgerso lygtis. Kai išpildytos rezonanso salygos, netiesiniu bangu saveika yra aprašoma integraliniais nariais. Pateiktos baigtiniu skirtumu schemos, aproksimuojančios tiek pradine diferencialiniu lygčiu sistema, tiek ir suvidurkintas lygtis. Atliktas skaičiavimo eksperimentas, patvirtinantis teorines išvadas. First Published Online: 14 Oct 2010
topic -
url https://journals.vgtu.lt/index.php/MMA/article/view/9890
work_keys_str_mv AT akrylovas asymptoticalanalysisofonedimensionalgasdynamicsequations
AT rciegis asymptoticalanalysisofonedimensionalgasdynamicsequations
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