Comptes Rendus. Mécanique最新文献

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Towards a simplified technique for crack recognition in gearing systems 齿轮传动系统裂纹识别的简化技术研究
Comptes Rendus. Mécanique Pub Date : 2022-09-28 DOI: 10.5802/crmeca.128
Thaer M. I. Syam, Yousif Badri, Omran Abdallah, Sadok Sassi, J. Renno, O. Mohammed
{"title":"Towards a simplified technique for crack recognition in gearing systems","authors":"Thaer M. I. Syam, Yousif Badri, Omran Abdallah, Sadok Sassi, J. Renno, O. Mohammed","doi":"10.5802/crmeca.128","DOIUrl":"https://doi.org/10.5802/crmeca.128","url":null,"abstract":"","PeriodicalId":183934,"journal":{"name":"Comptes Rendus. Mécanique","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-09-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124120085","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: 1
Lattice Fluid Dynamics: Thirty-five Years Down the Road 晶格流体动力学:35年之路
Comptes Rendus. Mécanique Pub Date : 2022-09-27 DOI: 10.5802/crmeca.161
S. Succi
{"title":"Lattice Fluid Dynamics: Thirty-five Years Down the Road","authors":"S. Succi","doi":"10.5802/crmeca.161","DOIUrl":"https://doi.org/10.5802/crmeca.161","url":null,"abstract":"We comment on the role and impact of lattice fluid dynamics on the general landscape of computational fluid dynamics. Starting from the historical development of Lattice Gas Cellular Automata, we move on to a cursory appraisal of the main applications of the Lattice Boltzmann method and challenges ahead.","PeriodicalId":183934,"journal":{"name":"Comptes Rendus. Mécanique","volume":"104 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124103658","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
Nonlinear iterative approximation of steady incompressible chemically reacting flows 稳态不可压缩化学反应流的非线性迭代逼近
Comptes Rendus. Mécanique Pub Date : 2022-09-16 DOI: 10.5802/crmeca.127
P. A. Gazca-Orozco, Pascal Heid, E. Süli
{"title":"Nonlinear iterative approximation of steady incompressible chemically reacting flows","authors":"P. A. Gazca-Orozco, Pascal Heid, E. Süli","doi":"10.5802/crmeca.127","DOIUrl":"https://doi.org/10.5802/crmeca.127","url":null,"abstract":". We consider a system of nonlinear partial differential equations modelling steady flow of an incompressible chemically reacting non-Newtonian fluid, whose viscosity depends on both the shear-rate and the concentration; in particular, the viscosity is of power-law type, with a power-law index that depends on the concentration. We prove that the weak solution, whose existence was already established in the literature, is unique, given some strengthened assumptions on the diffusive flux and the stress tensor, for smallenoughdata.Wethenshowthattheuniquenessresultcanbeappliedtoamodeldescribingthesynovial fluid. Furthermore, in the latter context, we prove the convergence of a nonlinear iteration scheme; the proposed scheme is remarkably simple and it amounts to solving a linear Stokes–Laplace system at each step. Numerical experiments are performed, which confirm the theoretical findings.","PeriodicalId":183934,"journal":{"name":"Comptes Rendus. Mécanique","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123934509","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
FSI—vibrations of immersed cylinders. Simulations with the engineering open-source code TrioCFD. Test cases and experimental comparisons 浸入式气缸的fsi振动。仿真与工程开源代码TrioCFD。测试用例和实验比较
Comptes Rendus. Mécanique Pub Date : 2022-09-06 DOI: 10.5802/crmeca.126
Domenico Panunzio, M. Puscas, R. Lagrange
{"title":"FSI—vibrations of immersed cylinders. Simulations with the engineering open-source code TrioCFD. Test cases and experimental comparisons","authors":"Domenico Panunzio, M. Puscas, R. Lagrange","doi":"10.5802/crmeca.126","DOIUrl":"https://doi.org/10.5802/crmeca.126","url":null,"abstract":"In this paper, we assess the capabilities of the Arbitrary Lagrangian-Eulerian method implemented in the open-source code TrioCFD to tackle down two fluid-structure interaction problems involving moving boundaries. To test the code, we first consider the bi-dimensional case of two coaxial cylinders moving in a viscous fluid. We show that the two fluid forces acting on the cylinders are in phase opposition, with amplitude and phase that only depend on the Stokes number, the dimensionless separation distance and the Keulegan-Carpenter number. Throughout a detailed parametric study, we show that the self (resp. cross) added mass and damping coefficients decrease (resp. increase) with the Stokes number and the separation distance. Our numerical results are in perfect agreement with the theoretical predictions of the literature, thereby validating the robustness of the ALE method implemented in TrioCFD. Then, we challenge the code by considering the case of a vibrating cylinder located in the central position of a square tube bundle. In parallel to the numerical investigations, we also present a new experimental setup for the measurement of the added coefficient, using the direct method introduced by Tanaka. The numerical predictions for the self-added coefficients are shown to be in very good agreement with a theoretical estimation used as a reference by engineers. A good agreement with the experimental results is also obtained for moderate and large Stokes numbers, whereas an important deviation due to parasitic frequencies in the experimental setup appears for low Stokes number. Still, this study clearly confirms that the ALE method implemented in TrioCFD is particularly efficient in solving fluid-structure interaction problems. As an open-source code, and given its ease of use and its flex-ibility, we believe that TrioCFD is thus perfectly adapted to engineers who need simple numerical tools to tackle down complex industrial problems.","PeriodicalId":183934,"journal":{"name":"Comptes Rendus. Mécanique","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115799882","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: 4
Development of a polar-based method for the calculation of the leeway of floating objects drifting at sea 基于极坐标的海上漂浮物漂移余地计算方法的发展
Comptes Rendus. Mécanique Pub Date : 2022-09-06 DOI: 10.5802/crmeca.125
T. Ackermann, S. Kaidi, P. Sergent, E. Lefrançois
{"title":"Development of a polar-based method for the calculation of the leeway of floating objects drifting at sea","authors":"T. Ackermann, S. Kaidi, P. Sergent, E. Lefrançois","doi":"10.5802/crmeca.125","DOIUrl":"https://doi.org/10.5802/crmeca.125","url":null,"abstract":"","PeriodicalId":183934,"journal":{"name":"Comptes Rendus. Mécanique","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129346818","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
Operational modal analysis using order-based analysis in a two-stage planetary gear with mechanical power recirculation 基于阶次分析的机械动力再循环两级行星齿轮运行模态分析
Comptes Rendus. Mécanique Pub Date : 2022-07-28 DOI: 10.5802/crmeca.123
Ayoub Mbarek, A. Fernández, A. Hammami, F. Chaari, F. Viadero, M. Haddar
{"title":"Operational modal analysis using order-based analysis in a two-stage planetary gear with mechanical power recirculation","authors":"Ayoub Mbarek, A. Fernández, A. Hammami, F. Chaari, F. Viadero, M. Haddar","doi":"10.5802/crmeca.123","DOIUrl":"https://doi.org/10.5802/crmeca.123","url":null,"abstract":"","PeriodicalId":183934,"journal":{"name":"Comptes Rendus. Mécanique","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-07-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116588973","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
Effect of elastic couplings on the dynamic behavior of transmission systems 弹性联轴器对传动系统动力特性的影响
Comptes Rendus. Mécanique Pub Date : 2022-07-20 DOI: 10.5802/crmeca.120
M. Bouslema, T. Fakhfakh, R. Nasri, M. Haddar
{"title":"Effect of elastic couplings on the dynamic behavior of transmission systems","authors":"M. Bouslema, T. Fakhfakh, R. Nasri, M. Haddar","doi":"10.5802/crmeca.120","DOIUrl":"https://doi.org/10.5802/crmeca.120","url":null,"abstract":"","PeriodicalId":183934,"journal":{"name":"Comptes Rendus. Mécanique","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-07-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133686362","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 reduced-order method with PGD for the analysis of dynamically loaded journal bearing 动态滑动轴承的降阶PGD分析方法
Comptes Rendus. Mécanique Pub Date : 2022-07-20 DOI: 10.5802/crmeca.124
Abdelhak Megdoud, B. Manser, I. Belaidi, F. Bakir, S. Khelladi
{"title":"A reduced-order method with PGD for the analysis of dynamically loaded journal bearing","authors":"Abdelhak Megdoud, B. Manser, I. Belaidi, F. Bakir, S. Khelladi","doi":"10.5802/crmeca.124","DOIUrl":"https://doi.org/10.5802/crmeca.124","url":null,"abstract":"","PeriodicalId":183934,"journal":{"name":"Comptes Rendus. Mécanique","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-07-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117141064","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
Asymptotic analysis of plates in static and dynamic strain gradient elasticity 板在静、动应变梯度弹性中的渐近分析
Comptes Rendus. Mécanique Pub Date : 2022-07-11 DOI: 10.5802/crmeca.118
C. Licht, T. Weller
{"title":"Asymptotic analysis of plates in static and dynamic strain gradient elasticity","authors":"C. Licht, T. Weller","doi":"10.5802/crmeca.118","DOIUrl":"https://doi.org/10.5802/crmeca.118","url":null,"abstract":"","PeriodicalId":183934,"journal":{"name":"Comptes Rendus. Mécanique","volume":"80 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127826500","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
Particles concentration and distribution over fixed rippled beds under waves by digital in-line holography 波下固定波纹床上颗粒浓度与分布的数字直线全息成像
Comptes Rendus. Mécanique Pub Date : 2022-07-04 DOI: 10.5802/crmeca.121
B. Mallat, G. Perret, G. Godard, D. Lebrun
{"title":"Particles concentration and distribution over fixed rippled beds under waves by digital in-line holography","authors":"B. Mallat, G. Perret, G. Godard, D. Lebrun","doi":"10.5802/crmeca.121","DOIUrl":"https://doi.org/10.5802/crmeca.121","url":null,"abstract":"","PeriodicalId":183934,"journal":{"name":"Comptes Rendus. Mécanique","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128062741","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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