[{"day":"06","month":"07","has_accepted_license":"1","article_processing_charge":"No","doi":"10.5281/ZENODO.6802720","date_published":"2022-07-06T00:00:00Z","tmp":{"short":"CC0 (1.0)","image":"/images/cc_0.png","legal_code_url":"https://creativecommons.org/publicdomain/zero/1.0/legalcode","name":"Creative Commons Public Domain Dedication (CC0 1.0)"},"citation":{"ista":"Budanur NB. 2022. burakbudanur/autoacc-public, Zenodo, 10.5281/ZENODO.6802720.","apa":"Budanur, N. B. (2022). burakbudanur/autoacc-public. Zenodo. https://doi.org/10.5281/ZENODO.6802720","ieee":"N. B. Budanur, “burakbudanur/autoacc-public.” Zenodo, 2022.","ama":"Budanur NB. burakbudanur/autoacc-public. 2022. doi:10.5281/ZENODO.6802720","chicago":"Budanur, Nazmi B. “Burakbudanur/Autoacc-Public.” Zenodo, 2022. https://doi.org/10.5281/ZENODO.6802720.","mla":"Budanur, Nazmi B. Burakbudanur/Autoacc-Public. Zenodo, 2022, doi:10.5281/ZENODO.6802720.","short":"N.B. Budanur, (2022)."},"main_file_link":[{"open_access":"1","url":"https://doi.org/10.5281/ZENODO.6802720"}],"oa":1,"abstract":[{"text":"Codes and data for reproducing the results of N. B. Budanur and B. Hof \"An autonomous compartmental model for accelerating epidemics\"","lang":"eng"}],"license":"https://creativecommons.org/publicdomain/zero/1.0/","type":"research_data_reference","author":[{"full_name":"Budanur, Nazmi B","id":"3EA1010E-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0003-0423-5010","first_name":"Nazmi B","last_name":"Budanur"}],"related_material":{"record":[{"status":"public","relation":"used_in_publication","id":"11704"}]},"date_created":"2022-08-01T08:06:33Z","date_updated":"2023-08-03T12:24:21Z","oa_version":"Published Version","_id":"11711","user_id":"6785fbc1-c503-11eb-8a32-93094b40e1cf","year":"2022","status":"public","ddc":["000"],"title":"burakbudanur/autoacc-public","department":[{"_id":"BjHo"}],"publisher":"Zenodo"},{"month":"01","publication_identifier":{"eisbn":["9783030679026"],"issn":["1875-3507"],"isbn":["9783030679019"],"eissn":["1875-3493"]},"isi":1,"quality_controlled":"1","external_id":{"isi":["000709087600051"]},"language":[{"iso":"eng"}],"conference":{"location":"London, United Kingdom","start_date":"2019-09-02","end_date":"2019-09-06","name":"IUTAM Symposium"},"doi":"10.1007/978-3-030-67902-6_51","place":"Cham","publication_status":"published","editor":[{"last_name":"Sherwin","first_name":"Spencer","full_name":"Sherwin, Spencer"},{"last_name":"Schmid","first_name":"Peter","full_name":"Schmid, Peter"},{"full_name":"Wu, Xuesong","last_name":"Wu","first_name":"Xuesong"}],"publisher":"Springer Nature","department":[{"_id":"BjHo"}],"acknowledgement":"The work is supported by the National Key Research and Development Program of China (No. 2016YFA0401200), the National Natural Science Foundation of China (Grant Nos. 91952202 and 11402167).","year":"2022","date_created":"2022-03-04T09:14:34Z","date_updated":"2023-08-03T12:54:59Z","volume":38,"author":[{"full_name":"Liu, Jianxin","last_name":"Liu","first_name":"Jianxin"},{"full_name":"Marensi, Elena","id":"0BE7553A-1004-11EA-B805-18983DDC885E","first_name":"Elena","last_name":"Marensi"},{"full_name":"Wu, Xuesong","last_name":"Wu","first_name":"Xuesong"}],"edition":"1","series_title":"IUTAM Bookseries","scopus_import":"1","day":"01","article_processing_charge":"No","page":"587-598","publication":"IUTAM Laminar-Turbulent Transition","citation":{"short":"J. Liu, E. Marensi, X. Wu, in:, S. Sherwin, P. Schmid, X. Wu (Eds.), IUTAM Laminar-Turbulent Transition, 1st ed., Springer Nature, Cham, 2022, pp. 587–598.","mla":"Liu, Jianxin, et al. “Effects of Streaky Structures on the Instability of Supersonic Boundary Layers.” IUTAM Laminar-Turbulent Transition, edited by Spencer Sherwin et al., 1st ed., vol. 38, Springer Nature, 2022, pp. 587–98, doi:10.1007/978-3-030-67902-6_51.","chicago":"Liu, Jianxin, Elena Marensi, and Xuesong Wu. “Effects of Streaky Structures on the Instability of Supersonic Boundary Layers.” In IUTAM Laminar-Turbulent Transition, edited by Spencer Sherwin, Peter Schmid, and Xuesong Wu, 1st ed., 38:587–98. IUTAM Bookseries. Cham: Springer Nature, 2022. https://doi.org/10.1007/978-3-030-67902-6_51.","ama":"Liu J, Marensi E, Wu X. Effects of streaky structures on the instability of supersonic boundary layers. In: Sherwin S, Schmid P, Wu X, eds. IUTAM Laminar-Turbulent Transition. Vol 38. 1st ed. IUTAM Bookseries. Cham: Springer Nature; 2022:587-598. doi:10.1007/978-3-030-67902-6_51","apa":"Liu, J., Marensi, E., & Wu, X. (2022). Effects of streaky structures on the instability of supersonic boundary layers. In S. Sherwin, P. Schmid, & X. Wu (Eds.), IUTAM Laminar-Turbulent Transition (1st ed., Vol. 38, pp. 587–598). Cham: Springer Nature. https://doi.org/10.1007/978-3-030-67902-6_51","ieee":"J. Liu, E. Marensi, and X. Wu, “Effects of streaky structures on the instability of supersonic boundary layers,” in IUTAM Laminar-Turbulent Transition, 1st ed., vol. 38, S. Sherwin, P. Schmid, and X. Wu, Eds. Cham: Springer Nature, 2022, pp. 587–598.","ista":"Liu J, Marensi E, Wu X. 2022.Effects of streaky structures on the instability of supersonic boundary layers. In: IUTAM Laminar-Turbulent Transition. vol. 38, 587–598."},"date_published":"2022-01-01T00:00:00Z","type":"book_chapter","abstract":[{"text":"Streaky structures in the boundary layers are often generated by surface roughness elements and/or free-stream turbulence, and are known to have significant effects on boundary-layer instability. In this paper, we investigate the impact of two forms of streaks on the instability of supersonic boundary layers. The first concerns the streaks generated by an array of spanwise periodic and streamwise elongated surface roughness elements, and our interest is how these streaks influence the lower-branch viscous first modes, whose characteristic wavelength and frequency are on the classical triple-deck scales. By adapting the triple-deck theory in the incompressible regime to the supersonic one, we first derived a simplified system which allows for efficient calculation of the streaks. The asymptotic analysis simplifies a bi-global eigenvalue problem to a one-dimensional problem in the spanwise direction, showing that the instability is controlled at leading order solely by the spanwise-dependent wall shear. In the fundamental configuration, the streaks stabilize first modes at low frequencies but destabilize the high-frequency ones. In the subharmonic configuration, the streaks generally destabilize the first mode across the entire frequency band. Importantly, the spanwise even modes are of radiating nature, i.e. they emit acoustic waves spontaneously to the far field. Streaks of the second form are generated by low-frequency vortical disturbances representing free-stream turbulence. They alter the flow in the entire layer and their effects on instability are investigated by solving the inviscid bi-global eigenvalue problem. Different from the incompressible case, a multitude of compressible instability modes exists, of which the dominant mode is an inviscid instability associated with the spanwise shear. In addition, there exists a separate branch of instability modes that have smaller growth rates but are spontaneously radiating.","lang":"eng"}],"title":"Effects of streaky structures on the instability of supersonic boundary layers","status":"public","intvolume":" 38","user_id":"4359f0d1-fa6c-11eb-b949-802e58b17ae8","_id":"10820","oa_version":"None"},{"article_number":"A21","author":[{"first_name":"B.","last_name":"Wang","full_name":"Wang, B."},{"last_name":"Ayats López","first_name":"Roger","orcid":"0000-0001-6572-0621","id":"ab77522d-073b-11ed-8aff-e71b39258362","full_name":"Ayats López, Roger"},{"full_name":"Deguchi, K.","first_name":"K.","last_name":"Deguchi"},{"full_name":"Mellibovsky, F.","first_name":"F.","last_name":"Mellibovsky"},{"full_name":"Meseguer, A.","last_name":"Meseguer","first_name":"A."}],"volume":951,"date_updated":"2023-08-04T08:54:16Z","date_created":"2023-01-12T12:04:17Z","year":"2022","acknowledgement":"K.D.’s research was supported by an Australian Research Council Discovery Early Career\r\nResearcher Award (DE170100171). B.W., R.A., F.M. and A.M. research was supported by the Spanish Ministerio de Economía y Competitivdad (grant numbers FIS2016-77849-R and FIS2017-85794-P) and Ministerio de Ciencia e Innovación (grant number PID2020-114043GB-I00) and the Generalitat de Catalunya (grant 2017-SGR-785). B.W.’s research was also supported by the Chinese Scholarship Council (grant CSC no. 201806440152).","publisher":"Cambridge University Press","department":[{"_id":"BjHo"}],"publication_status":"published","publication_identifier":{"eissn":["1469-7645"],"issn":["0022-1120"]},"month":"11","doi":"10.1017/jfm.2022.828","language":[{"iso":"eng"}],"main_file_link":[{"url":" https://doi.org/10.48550/arXiv.2207.12990","open_access":"1"}],"external_id":{"isi":["000879446900001"],"arxiv":["2207.12990"]},"oa":1,"quality_controlled":"1","isi":1,"abstract":[{"text":"We investigate the local self-sustained process underlying spiral turbulence in counter-rotating Taylor–Couette flow using a periodic annular domain, shaped as a parallelogram, two of whose sides are aligned with the cylindrical helix described by the spiral pattern. The primary focus of the study is placed on the emergence of drifting–rotating waves (DRW) that capture, in a relatively small domain, the main features of coherent structures typically observed in developed turbulence. The transitional dynamics of the subcritical region, far below the first instability of the laminar circular Couette flow, is determined by the upper and lower branches of DRW solutions originated at saddle-node bifurcations. The mechanism whereby these solutions self-sustain, and the chaotic dynamics they induce, are conspicuously reminiscent of other subcritical shear flows. Remarkably, the flow properties of DRW persist even as the Reynolds number is increased beyond the linear stability threshold of the base flow. Simulations in a narrow parallelogram domain stretched in the azimuthal direction to revolve around the apparatus a full turn confirm that self-sustained vortices eventually concentrate into a localised pattern. The resulting statistical steady state satisfactorily reproduces qualitatively, and to a certain degree also quantitatively, the topology and properties of spiral turbulence as calculated in a large periodic domain of sufficient aspect ratio that is representative of the real system.","lang":"eng"}],"type":"journal_article","oa_version":"Preprint","user_id":"4359f0d1-fa6c-11eb-b949-802e58b17ae8","_id":"12137","intvolume":" 951","status":"public","title":"Self-sustainment of coherent structures in counter-rotating Taylor–Couette flow","article_processing_charge":"No","day":"07","scopus_import":"1","keyword":["Mechanical Engineering","Mechanics of Materials","Condensed Matter Physics","Applied Mathematics"],"date_published":"2022-11-07T00:00:00Z","citation":{"chicago":"Wang, B., Roger Ayats López, K. Deguchi, F. Mellibovsky, and A. Meseguer. “Self-Sustainment of Coherent Structures in Counter-Rotating Taylor–Couette Flow.” Journal of Fluid Mechanics. Cambridge University Press, 2022. https://doi.org/10.1017/jfm.2022.828.","short":"B. Wang, R. Ayats López, K. Deguchi, F. Mellibovsky, A. Meseguer, Journal of Fluid Mechanics 951 (2022).","mla":"Wang, B., et al. “Self-Sustainment of Coherent Structures in Counter-Rotating Taylor–Couette Flow.” Journal of Fluid Mechanics, vol. 951, A21, Cambridge University Press, 2022, doi:10.1017/jfm.2022.828.","apa":"Wang, B., Ayats López, R., Deguchi, K., Mellibovsky, F., & Meseguer, A. (2022). Self-sustainment of coherent structures in counter-rotating Taylor–Couette flow. Journal of Fluid Mechanics. Cambridge University Press. https://doi.org/10.1017/jfm.2022.828","ieee":"B. Wang, R. Ayats López, K. Deguchi, F. Mellibovsky, and A. Meseguer, “Self-sustainment of coherent structures in counter-rotating Taylor–Couette flow,” Journal of Fluid Mechanics, vol. 951. Cambridge University Press, 2022.","ista":"Wang B, Ayats López R, Deguchi K, Mellibovsky F, Meseguer A. 2022. Self-sustainment of coherent structures in counter-rotating Taylor–Couette flow. Journal of Fluid Mechanics. 951, A21.","ama":"Wang B, Ayats López R, Deguchi K, Mellibovsky F, Meseguer A. Self-sustainment of coherent structures in counter-rotating Taylor–Couette flow. Journal of Fluid Mechanics. 2022;951. doi:10.1017/jfm.2022.828"},"publication":"Journal of Fluid Mechanics","article_type":"original"},{"publication_identifier":{"issn":["1054-1500"],"eissn":["1089-7682"]},"month":"09","isi":1,"quality_controlled":"1","tmp":{"name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)","legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode","short":"CC BY (4.0)","image":"/images/cc_by.png"},"oa":1,"external_id":{"arxiv":["2206.01531"],"isi":["000861009600005"]},"language":[{"iso":"eng"}],"doi":"10.1063/5.0102904","article_number":"093138","file_date_updated":"2023-01-30T09:41:12Z","department":[{"_id":"MaSe"},{"_id":"BjHo"},{"_id":"NanoFab"}],"publisher":"AIP Publishing","publication_status":"published","year":"2022","acknowledgement":"This work was partially funded by the Institute of Science and Technology Austria Interdisciplinary Project Committee Grant “Pilot-Wave Hydrodynamics: Chaos and Quantum Analogies.”","volume":32,"date_updated":"2023-08-04T09:51:17Z","date_created":"2023-01-16T09:58:16Z","author":[{"full_name":"Choueiri, George H","last_name":"Choueiri","first_name":"George H","id":"448BD5BC-F248-11E8-B48F-1D18A9856A87"},{"full_name":"Suri, Balachandra","id":"47A5E706-F248-11E8-B48F-1D18A9856A87","last_name":"Suri","first_name":"Balachandra"},{"full_name":"Merrin, Jack","last_name":"Merrin","first_name":"Jack","orcid":"0000-0001-5145-4609","id":"4515C308-F248-11E8-B48F-1D18A9856A87"},{"full_name":"Serbyn, Maksym","first_name":"Maksym","last_name":"Serbyn","id":"47809E7E-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0002-2399-5827"},{"full_name":"Hof, Björn","orcid":"0000-0003-2057-2754","id":"3A374330-F248-11E8-B48F-1D18A9856A87","last_name":"Hof","first_name":"Björn"},{"full_name":"Budanur, Nazmi B","first_name":"Nazmi B","last_name":"Budanur","id":"3EA1010E-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0003-0423-5010"}],"keyword":["Applied Mathematics","General Physics and Astronomy","Mathematical Physics","Statistical and Nonlinear Physics"],"scopus_import":"1","article_processing_charge":"No","has_accepted_license":"1","day":"26","article_type":"original","citation":{"chicago":"Choueiri, George H, Balachandra Suri, Jack Merrin, Maksym Serbyn, Björn Hof, and Nazmi B Budanur. “Crises and Chaotic Scattering in Hydrodynamic Pilot-Wave Experiments.” Chaos: An Interdisciplinary Journal of Nonlinear Science. AIP Publishing, 2022. https://doi.org/10.1063/5.0102904.","short":"G.H. Choueiri, B. Suri, J. Merrin, M. Serbyn, B. Hof, N.B. Budanur, Chaos: An Interdisciplinary Journal of Nonlinear Science 32 (2022).","mla":"Choueiri, George H., et al. “Crises and Chaotic Scattering in Hydrodynamic Pilot-Wave Experiments.” Chaos: An Interdisciplinary Journal of Nonlinear Science, vol. 32, no. 9, 093138, AIP Publishing, 2022, doi:10.1063/5.0102904.","ieee":"G. H. Choueiri, B. Suri, J. Merrin, M. Serbyn, B. Hof, and N. B. Budanur, “Crises and chaotic scattering in hydrodynamic pilot-wave experiments,” Chaos: An Interdisciplinary Journal of Nonlinear Science, vol. 32, no. 9. AIP Publishing, 2022.","apa":"Choueiri, G. H., Suri, B., Merrin, J., Serbyn, M., Hof, B., & Budanur, N. B. (2022). Crises and chaotic scattering in hydrodynamic pilot-wave experiments. Chaos: An Interdisciplinary Journal of Nonlinear Science. AIP Publishing. https://doi.org/10.1063/5.0102904","ista":"Choueiri GH, Suri B, Merrin J, Serbyn M, Hof B, Budanur NB. 2022. Crises and chaotic scattering in hydrodynamic pilot-wave experiments. Chaos: An Interdisciplinary Journal of Nonlinear Science. 32(9), 093138.","ama":"Choueiri GH, Suri B, Merrin J, Serbyn M, Hof B, Budanur NB. Crises and chaotic scattering in hydrodynamic pilot-wave experiments. Chaos: An Interdisciplinary Journal of Nonlinear Science. 2022;32(9). doi:10.1063/5.0102904"},"publication":"Chaos: An Interdisciplinary Journal of Nonlinear Science","date_published":"2022-09-26T00:00:00Z","type":"journal_article","issue":"9","abstract":[{"text":"Theoretical foundations of chaos have been predominantly laid out for finite-dimensional dynamical systems, such as the three-body problem in classical mechanics and the Lorenz model in dissipative systems. In contrast, many real-world chaotic phenomena, e.g., weather, arise in systems with many (formally infinite) degrees of freedom, which limits direct quantitative analysis of such systems using chaos theory. In the present work, we demonstrate that the hydrodynamic pilot-wave systems offer a bridge between low- and high-dimensional chaotic phenomena by allowing for a systematic study of how the former connects to the latter. Specifically, we present experimental results, which show the formation of low-dimensional chaotic attractors upon destabilization of regular dynamics and a final transition to high-dimensional chaos via the merging of distinct chaotic regions through a crisis bifurcation. Moreover, we show that the post-crisis dynamics of the system can be rationalized as consecutive scatterings from the nonattracting chaotic sets with lifetimes following exponential distributions. ","lang":"eng"}],"intvolume":" 32","status":"public","ddc":["530"],"title":"Crises and chaotic scattering in hydrodynamic pilot-wave experiments","user_id":"4359f0d1-fa6c-11eb-b949-802e58b17ae8","_id":"12259","file":[{"date_created":"2023-01-30T09:41:12Z","date_updated":"2023-01-30T09:41:12Z","checksum":"17881eff8b21969359a2dd64620120ba","success":1,"relation":"main_file","file_id":"12445","content_type":"application/pdf","file_size":3209644,"creator":"dernst","file_name":"2022_Chaos_Choueiri.pdf","access_level":"open_access"}],"oa_version":"Published Version"},{"language":[{"iso":"eng"}],"doi":"10.1103/physrevfluids.7.l081301","quality_controlled":"1","isi":1,"external_id":{"isi":["000836397000001"],"arxiv":["2205.12871"]},"main_file_link":[{"open_access":"1","url":" https://doi.org/10.48550/arXiv.2205.12871"}],"oa":1,"month":"08","publication_identifier":{"issn":["2469-990X"]},"date_created":"2023-01-16T10:02:40Z","date_updated":"2023-08-04T10:26:40Z","volume":7,"author":[{"last_name":"Kumar","first_name":"M. Vijay","full_name":"Kumar, M. Vijay"},{"full_name":"Varshney, Atul","orcid":"0000-0002-3072-5999","id":"2A2006B2-F248-11E8-B48F-1D18A9856A87","last_name":"Varshney","first_name":"Atul"},{"full_name":"Li, Dongyang","last_name":"Li","first_name":"Dongyang"},{"full_name":"Steinberg, Victor","last_name":"Steinberg","first_name":"Victor"}],"publication_status":"published","publisher":"American Physical Society","department":[{"_id":"BjHo"}],"year":"2022","acknowledgement":"We thank G. Falkovich for discussion and Guy Han for technical support. We are grateful to N. Jha for his help in µPIV measurements. This work is partially supported by the grants from\r\nIsrael Science Foundation (ISF; grant #882/15 and grant #784/19) and Binational USA-Israel Foundation (BSF;grant #2016145). ","article_number":"L081301","date_published":"2022-08-03T00:00:00Z","article_type":"original","publication":"Physical Review Fluids","citation":{"ista":"Kumar MV, Varshney A, Li D, Steinberg V. 2022. Relaminarization of elastic turbulence. Physical Review Fluids. 7(8), L081301.","ieee":"M. V. Kumar, A. Varshney, D. Li, and V. Steinberg, “Relaminarization of elastic turbulence,” Physical Review Fluids, vol. 7, no. 8. American Physical Society, 2022.","apa":"Kumar, M. V., Varshney, A., Li, D., & Steinberg, V. (2022). Relaminarization of elastic turbulence. Physical Review Fluids. American Physical Society. https://doi.org/10.1103/physrevfluids.7.l081301","ama":"Kumar MV, Varshney A, Li D, Steinberg V. Relaminarization of elastic turbulence. Physical Review Fluids. 2022;7(8). doi:10.1103/physrevfluids.7.l081301","chicago":"Kumar, M. Vijay, Atul Varshney, Dongyang Li, and Victor Steinberg. “Relaminarization of Elastic Turbulence.” Physical Review Fluids. American Physical Society, 2022. https://doi.org/10.1103/physrevfluids.7.l081301.","mla":"Kumar, M. Vijay, et al. “Relaminarization of Elastic Turbulence.” Physical Review Fluids, vol. 7, no. 8, L081301, American Physical Society, 2022, doi:10.1103/physrevfluids.7.l081301.","short":"M.V. Kumar, A. Varshney, D. Li, V. Steinberg, Physical Review Fluids 7 (2022)."},"day":"03","article_processing_charge":"No","keyword":["Fluid Flow and Transfer Processes","Modeling and Simulation","Computational Mechanics"],"scopus_import":"1","oa_version":"Preprint","status":"public","title":"Relaminarization of elastic turbulence","intvolume":" 7","user_id":"4359f0d1-fa6c-11eb-b949-802e58b17ae8","_id":"12279","abstract":[{"lang":"eng","text":"We report frictional drag reduction and a complete flow relaminarization of elastic turbulence (ET) at vanishing inertia in a viscoelastic channel flow past an obstacle. We show that the intensity of the observed elastic waves and wall-normal vorticity correlate well with the measured drag above the onset of ET. Moreover, we find that the elastic wave frequency grows with the Weissenberg number, and at sufficiently high frequency it causes a decay of the elastic waves, resulting in ET attenuation and drag reduction. Thus, this allows us to substantiate a physical mechanism, involving the interaction of elastic waves with wall-normal vorticity fluctuations, leading to the drag reduction and relaminarization phenomena at low Reynolds number."}],"issue":"8","type":"journal_article"}]