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USSR Computational Mathematics and Mathematical Physics最新文献

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An alternative method for the numerical solution of the integrodifferential heat-conduction equation 积分微分热传导方程数值解的另一种方法
USSR Computational Mathematics and Mathematical Physics Pub Date : 1990-01-01 Epub Date: 2004-04-01 DOI: 10.1016/0041-5553(90)90016-L
E.N. Baidakov, G.N. Kuvyrkin
{"title":"An alternative method for the numerical solution of the integrodifferential heat-conduction equation","authors":"E.N. Baidakov,&nbsp;G.N. Kuvyrkin","doi":"10.1016/0041-5553(90)90016-L","DOIUrl":"10.1016/0041-5553(90)90016-L","url":null,"abstract":"<div><p>An algorithm is developed using the finite-element method for calculating the temperature field in a bounded domain allowing for the finite rate of propagation of heat during pulsed surface heating. An accumulating finite element mesh is used in order to remove the oscillations in the solution behind the temperature wave front. An investigation of the error in the calculations enables a rational approach to be taken to the choice of parameters in the integration scheme. Calculations of the propagation and reflection of the temperature waves due to pulsed surface charging are presented.</p></div>","PeriodicalId":101271,"journal":{"name":"USSR Computational Mathematics and Mathematical Physics","volume":"30 1","pages":"Pages 118-122"},"PeriodicalIF":0.0,"publicationDate":"1990-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0041-5553(90)90016-L","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84142758","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Localized compression regimes in a heat-conducting gas 热传导气体的局部压缩状态
USSR Computational Mathematics and Mathematical Physics Pub Date : 1990-01-01 Epub Date: 2004-04-01 DOI: 10.1016/0041-5553(90)90088-A
V.V. Gudkov, A.P. Mikhailov, V.V. Stepanova
{"title":"Localized compression regimes in a heat-conducting gas","authors":"V.V. Gudkov,&nbsp;A.P. Mikhailov,&nbsp;V.V. Stepanova","doi":"10.1016/0041-5553(90)90088-A","DOIUrl":"10.1016/0041-5553(90)90088-A","url":null,"abstract":"<div><p>The effect of limiting regimes with peaking on a compressible sphere with thermal conductivity <em>χ</em> = <em>χ</em><sub>0</sub><em>ρ</em><sup><em>α</em></sup><em>T</em><sup><em>β</em></sup>, <em>β</em> &gt; 0, is examined. The investigation is carried out for selfsimilar solutions of the power type. Conditions are established for shockless supercompression of the material and joint localization of the thermal and gas-dynamic processes, which depend on the thermophysical properties of the medium and the limiting law. The phenomena are also investigated numerically.</p></div>","PeriodicalId":101271,"journal":{"name":"USSR Computational Mathematics and Mathematical Physics","volume":"30 2","pages":"Pages 130-138"},"PeriodicalIF":0.0,"publicationDate":"1990-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0041-5553(90)90088-A","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90575549","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A method of generating an interpolating curve with piecewise sign-constant curvature 一种生成分段常数曲率插值曲线的方法
USSR Computational Mathematics and Mathematical Physics Pub Date : 1990-01-01 Epub Date: 2004-04-01 DOI: 10.1016/0041-5553(90)90211-A
V.L. Murashko, I.L. Osipov
{"title":"A method of generating an interpolating curve with piecewise sign-constant curvature","authors":"V.L. Murashko,&nbsp;I.L. Osipov","doi":"10.1016/0041-5553(90)90211-A","DOIUrl":"10.1016/0041-5553(90)90211-A","url":null,"abstract":"<div><p>A method of interpolating a function of one variable whose values and first derivatives are fixed at the end-points of an interval is described. The solution of the problem is a one-parameter family of second-order curves. An example of the application of the method to the global construction of an interpolating curve is given.</p></div>","PeriodicalId":101271,"journal":{"name":"USSR Computational Mathematics and Mathematical Physics","volume":"30 3","pages":"Pages 212-214"},"PeriodicalIF":0.0,"publicationDate":"1990-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0041-5553(90)90211-A","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73775260","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
An unsaturated method for the discretization of systems of linear differential equations unsolved with respect to derivatives 关于导数的未解线性微分方程系统离散化的不饱和方法
USSR Computational Mathematics and Mathematical Physics Pub Date : 1990-01-01 Epub Date: 2004-04-01 DOI: 10.1016/0041-5553(90)90166-P
P.N. Denisenko
{"title":"An unsaturated method for the discretization of systems of linear differential equations unsolved with respect to derivatives","authors":"P.N. Denisenko","doi":"10.1016/0041-5553(90)90166-P","DOIUrl":"10.1016/0041-5553(90)90166-P","url":null,"abstract":"","PeriodicalId":101271,"journal":{"name":"USSR Computational Mathematics and Mathematical Physics","volume":"30 5","pages":"Pages 100-106"},"PeriodicalIF":0.0,"publicationDate":"1990-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0041-5553(90)90166-P","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79015067","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Chebyshev acceleration of the schwarz alternation process 施瓦兹交替过程的切比雪夫加速
USSR Computational Mathematics and Mathematical Physics Pub Date : 1990-01-01 Epub Date: 2004-04-01 DOI: 10.1016/0041-5553(90)90077-6
S.A. Sander
{"title":"Chebyshev acceleration of the schwarz alternation process","authors":"S.A. Sander","doi":"10.1016/0041-5553(90)90077-6","DOIUrl":"10.1016/0041-5553(90)90077-6","url":null,"abstract":"<div><p>Chebyshev acceleration of a difference analogue of the Schwarz alternation process is considered. Estimates for the rate of convergence, in the <em>W</em><sub>2<em>h</em></sub><sup>1</sup> norm, are presented.</p></div>","PeriodicalId":101271,"journal":{"name":"USSR Computational Mathematics and Mathematical Physics","volume":"30 2","pages":"Pages 62-67"},"PeriodicalIF":0.0,"publicationDate":"1990-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0041-5553(90)90077-6","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77243136","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Diffraction by a strip parallel to the surface of a compressible stratified liquid 平行于可压缩的分层液体表面的条衍射
USSR Computational Mathematics and Mathematical Physics Pub Date : 1990-01-01 Epub Date: 2004-04-01 DOI: 10.1016/0041-5553(90)90159-P
R.R. Gabdullin
{"title":"Diffraction by a strip parallel to the surface of a compressible stratified liquid","authors":"R.R. Gabdullin","doi":"10.1016/0041-5553(90)90159-P","DOIUrl":"10.1016/0041-5553(90)90159-P","url":null,"abstract":"","PeriodicalId":101271,"journal":{"name":"USSR Computational Mathematics and Mathematical Physics","volume":"30 5","pages":"Pages 35-41"},"PeriodicalIF":0.0,"publicationDate":"1990-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0041-5553(90)90159-P","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84844951","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A numerical-asymptotic multicomponent averaging method for equations with contrasting coefficients 系数对比方程的数值渐近多分量平均方法
USSR Computational Mathematics and Mathematical Physics Pub Date : 1990-01-01 Epub Date: 2004-04-01 DOI: 10.1016/0041-5553(90)90027-P
G.P. Panasenko
{"title":"A numerical-asymptotic multicomponent averaging method for equations with contrasting coefficients","authors":"G.P. Panasenko","doi":"10.1016/0041-5553(90)90027-P","DOIUrl":"10.1016/0041-5553(90)90027-P","url":null,"abstract":"<div><p>A new numerical-asymptotic method is proposed for constructing asymptotic solutions of equations that describe processes in strongly nonhomogeneous periodic media.</p></div>","PeriodicalId":101271,"journal":{"name":"USSR Computational Mathematics and Mathematical Physics","volume":"30 1","pages":"Pages 178-186"},"PeriodicalIF":0.0,"publicationDate":"1990-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0041-5553(90)90027-P","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88792924","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
Decomposition in extremal problems of special structure 特殊结构极值问题的分解
USSR Computational Mathematics and Mathematical Physics Pub Date : 1990-01-01 Epub Date: 2004-04-01 DOI: 10.1016/0041-5553(90)90041-P
I.S. Litvinchev
{"title":"Decomposition in extremal problems of special structure","authors":"I.S. Litvinchev","doi":"10.1016/0041-5553(90)90041-P","DOIUrl":"10.1016/0041-5553(90)90041-P","url":null,"abstract":"<div><p>A decomposition method based on aggregated macrovariables is proposed for optimization problems in which some of the constraints have a special structure — block, block-separable, or blocks with coupling variables. A number of standard decomposition methods are derived in the proposed framework. Problems with known bounds on the coupling variables are considered.</p></div>","PeriodicalId":101271,"journal":{"name":"USSR Computational Mathematics and Mathematical Physics","volume":"30 4","pages":"Pages 32-38"},"PeriodicalIF":0.0,"publicationDate":"1990-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0041-5553(90)90041-P","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85670820","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
On an inertial flow 关于惯性流
USSR Computational Mathematics and Mathematical Physics Pub Date : 1990-01-01 Epub Date: 2004-04-01 DOI: 10.1016/0041-5553(90)90126-D
Yu.D. Shmyglevskii
{"title":"On an inertial flow","authors":"Yu.D. Shmyglevskii","doi":"10.1016/0041-5553(90)90126-D","DOIUrl":"10.1016/0041-5553(90)90126-D","url":null,"abstract":"<div><p>An example of a steady axisymmetric flow of an incompressible fluid, with a non-zero peripheral velocity component and straight streamlines, is constructed.</p></div>","PeriodicalId":101271,"journal":{"name":"USSR Computational Mathematics and Mathematical Physics","volume":"30 6","pages":"Pages 167-168"},"PeriodicalIF":0.0,"publicationDate":"1990-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0041-5553(90)90126-D","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"99282866","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Fundamental solutions and Green's formulae for families of equations arising in the theory of the oscillations of a stratified viscous liquid 层状粘性液体振荡理论中方程组族的基本解和格林公式
USSR Computational Mathematics and Mathematical Physics Pub Date : 1990-01-01 Epub Date: 2004-04-01 DOI: 10.1016/0041-5553(90)90174-Q
A.G. Sveshnikov, S.T. Simakov
{"title":"Fundamental solutions and Green's formulae for families of equations arising in the theory of the oscillations of a stratified viscous liquid","authors":"A.G. Sveshnikov,&nbsp;S.T. Simakov","doi":"10.1016/0041-5553(90)90174-Q","DOIUrl":"10.1016/0041-5553(90)90174-Q","url":null,"abstract":"","PeriodicalId":101271,"journal":{"name":"USSR Computational Mathematics and Mathematical Physics","volume":"30 5","pages":"Pages 159-167"},"PeriodicalIF":0.0,"publicationDate":"1990-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0041-5553(90)90174-Q","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83641631","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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