Pub Date : 2023-10-21DOI: 10.1142/s2591728523500184
Sjoerd Van Ophem, Wim Desmet, Elke Deckers
While acoustic analysis with the finite element method is commonly done under the assumption that the source location is stationary, this is not always a valid assumption. This paper derives a method to simulate moving sound sources using an unfitted mesh approach, where the source boundary is described by cutting through elements, known as the cut finite element method (cutFEM). By using such an approach the mesh stays static during simulation, even for large source movements, thus avoiding expensive re-meshing or mesh morphing steps. To be able to describe a wide variety of acoustic sources, both sources with a large and thin thickness are considered. Several time integration schemes are assessed and a method to determine the stability of the resulting time-varying system of equations is derived. The paper concludes by demonstrating the derived methods with two examples, where it is shown that the unfitted mesh approach is a viable way to simulate moving sources.
{"title":"Modeling of complex moving sound sources using a cut finite element method approach","authors":"Sjoerd Van Ophem, Wim Desmet, Elke Deckers","doi":"10.1142/s2591728523500184","DOIUrl":"https://doi.org/10.1142/s2591728523500184","url":null,"abstract":"While acoustic analysis with the finite element method is commonly done under the assumption that the source location is stationary, this is not always a valid assumption. This paper derives a method to simulate moving sound sources using an unfitted mesh approach, where the source boundary is described by cutting through elements, known as the cut finite element method (cutFEM). By using such an approach the mesh stays static during simulation, even for large source movements, thus avoiding expensive re-meshing or mesh morphing steps. To be able to describe a wide variety of acoustic sources, both sources with a large and thin thickness are considered. Several time integration schemes are assessed and a method to determine the stability of the resulting time-varying system of equations is derived. The paper concludes by demonstrating the derived methods with two examples, where it is shown that the unfitted mesh approach is a viable way to simulate moving sources.","PeriodicalId":55976,"journal":{"name":"Journal of Theoretical and Computational Acoustics","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135463233","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-10-13DOI: 10.1142/s2591728523500202
F. Dumortier, V. Meyer, L. Maxit
{"title":"Scattering from a partially coated shell immersed in water using a subractive modelling technique","authors":"F. Dumortier, V. Meyer, L. Maxit","doi":"10.1142/s2591728523500202","DOIUrl":"https://doi.org/10.1142/s2591728523500202","url":null,"abstract":"","PeriodicalId":55976,"journal":{"name":"Journal of Theoretical and Computational Acoustics","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135918163","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-10-13DOI: 10.1142/s2591728523300015
Constance Bocquet, Cyril Desjouy, Gwenael Gabard
{"title":"A High-Order Immersed Moving Boundary Method using Ghost Points and Characteristics for Acoustics","authors":"Constance Bocquet, Cyril Desjouy, Gwenael Gabard","doi":"10.1142/s2591728523300015","DOIUrl":"https://doi.org/10.1142/s2591728523300015","url":null,"abstract":"","PeriodicalId":55976,"journal":{"name":"Journal of Theoretical and Computational Acoustics","volume":"55 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135918164","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-09-29DOI: 10.1142/s2591728523500196
Dionysios Panagiotopoulos, Wim Desmet, Elke Deckers
{"title":"A fast multifrequency iterative acoustic Boundary Element Method solver based on a preconditioned accelerated recycling strategy","authors":"Dionysios Panagiotopoulos, Wim Desmet, Elke Deckers","doi":"10.1142/s2591728523500196","DOIUrl":"https://doi.org/10.1142/s2591728523500196","url":null,"abstract":"","PeriodicalId":55976,"journal":{"name":"Journal of Theoretical and Computational Acoustics","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135247326","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Revising the Boundary Element Method for Thermoviscous Acoustics: An Iterative Approach via Schur Complement","authors":"Simone Preuss, Mikkel Paltorp, Alexis Blanc, Vicente Cutanda Henriquez, Steffen Marburg","doi":"10.1142/s2591728523500159","DOIUrl":"https://doi.org/10.1142/s2591728523500159","url":null,"abstract":"","PeriodicalId":55976,"journal":{"name":"Journal of Theoretical and Computational Acoustics","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135202532","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-09-01DOI: 10.1142/s2591728523500147
Ruihua Sun, Haijun Wu, Weikang Jiang, Liang Ji, Danwang Li
{"title":"A Boundary Element Method for Acoustic Problems in Relative Motion between Source and Fluid","authors":"Ruihua Sun, Haijun Wu, Weikang Jiang, Liang Ji, Danwang Li","doi":"10.1142/s2591728523500147","DOIUrl":"https://doi.org/10.1142/s2591728523500147","url":null,"abstract":"","PeriodicalId":55976,"journal":{"name":"Journal of Theoretical and Computational Acoustics","volume":"30 1","pages":""},"PeriodicalIF":1.9,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75873237","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-08-30DOI: 10.1142/s2591728523500135
Jonas M Schmid, M. Eser, S. Marburg
{"title":"Novem paper: Bayesian approach for the in situ estimation of the acoustic boundary admittance","authors":"Jonas M Schmid, M. Eser, S. Marburg","doi":"10.1142/s2591728523500135","DOIUrl":"https://doi.org/10.1142/s2591728523500135","url":null,"abstract":"","PeriodicalId":55976,"journal":{"name":"Journal of Theoretical and Computational Acoustics","volume":"os-49 1","pages":""},"PeriodicalIF":1.9,"publicationDate":"2023-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87248376","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-08-04DOI: 10.1142/s2591728523500123
Mikkel Paltorp Schmitt, Vicente Cutanda Henríquez, N. Aage, Peter Risby Andersen
{"title":"A Reduced Order Series Expansion for the BEM Incorporating the Boundary Layer Impedance Condition","authors":"Mikkel Paltorp Schmitt, Vicente Cutanda Henríquez, N. Aage, Peter Risby Andersen","doi":"10.1142/s2591728523500123","DOIUrl":"https://doi.org/10.1142/s2591728523500123","url":null,"abstract":"","PeriodicalId":55976,"journal":{"name":"Journal of Theoretical and Computational Acoustics","volume":"11 1","pages":""},"PeriodicalIF":1.9,"publicationDate":"2023-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73927010","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-07-21DOI: 10.1142/s2591728523500111
Luis Corral, P. Román
{"title":"Vectorized matrix formulation for sound power determination through inverse problems and regularization techniques","authors":"Luis Corral, P. Román","doi":"10.1142/s2591728523500111","DOIUrl":"https://doi.org/10.1142/s2591728523500111","url":null,"abstract":"","PeriodicalId":55976,"journal":{"name":"Journal of Theoretical and Computational Acoustics","volume":"20 1","pages":""},"PeriodicalIF":1.9,"publicationDate":"2023-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81594603","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-06-23DOI: 10.1142/s259172852350010x
M. Ochmann
{"title":"The frequency spectrum of a harmonically radiating monopole moving along arbitrary trajectories - with application to helical orbits","authors":"M. Ochmann","doi":"10.1142/s259172852350010x","DOIUrl":"https://doi.org/10.1142/s259172852350010x","url":null,"abstract":"","PeriodicalId":55976,"journal":{"name":"Journal of Theoretical and Computational Acoustics","volume":"1 1","pages":""},"PeriodicalIF":1.9,"publicationDate":"2023-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75534810","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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