{"scopus_import":"1","publisher":"American Physical Society","user_id":"c635000d-4b10-11ee-a964-aac5a93f6ac1","date_created":"2018-12-11T11:44:11Z","oa_version":"Published Version","oa":1,"status":"public","title":"Drag enhancement and drag reduction in viscoelastic flow","quality_controlled":"1","date_updated":"2023-09-11T12:59:28Z","article_processing_charge":"No","month":"10","day":"15","type":"journal_article","file":[{"creator":"system","access_level":"open_access","file_name":"IST-2018-1061-v1+1_PhysRevFluids.3.103302.pdf","content_type":"application/pdf","checksum":"e1445be33e8165114e96246275600750","relation":"main_file","file_size":1409040,"date_created":"2018-12-12T10:10:14Z","file_id":"4800","date_updated":"2020-07-14T12:45:12Z"}],"abstract":[{"lang":"eng","text":"Creeping flow of polymeric fluid without inertia exhibits elastic instabilities and elastic turbulence accompanied by drag enhancement due to elastic stress produced by flow-stretched polymers. However, in inertia-dominated flow at high Re and low fluid elasticity El, a reduction in turbulent frictional drag is caused by an intricate competition between inertial and elastic stresses. Here we explore the effect of inertia on the stability of viscoelastic flow in a broad range of control parameters El and (Re,Wi). We present the stability diagram of observed flow regimes in Wi-Re coordinates and find that the instabilities' onsets show an unexpectedly nonmonotonic dependence on El. Further, three distinct regions in the diagram are identified based on El. Strikingly, for high-elasticity fluids we discover a complete relaminarization of flow at Reynolds number in the range of 1 to 10, different from a well-known turbulent drag reduction. These counterintuitive effects may be explained by a finite polymer extensibility and a suppression of vorticity at high Wi. Our results call for further theoretical and numerical development to uncover the role of inertial effect on elastic turbulence in a viscoelastic flow."}],"department":[{"_id":"BjHo"}],"issue":"10","publication_status":"published","date_published":"2018-10-15T00:00:00Z","year":"2018","publist_id":"8038","volume":3,"intvolume":"         3","project":[{"call_identifier":"H2020","name":"ISTplus - Postdoctoral Fellowships","_id":"260C2330-B435-11E9-9278-68D0E5697425","grant_number":"754411"}],"ddc":["532"],"file_date_updated":"2020-07-14T12:45:12Z","isi":1,"external_id":{"isi":["000447311500001"]},"has_accepted_license":"1","author":[{"full_name":"Varshney, Atul","id":"2A2006B2-F248-11E8-B48F-1D18A9856A87","last_name":"Varshney","first_name":"Atul","orcid":"0000-0002-3072-5999"},{"full_name":"Steinberg, Victor","first_name":"Victor","last_name":"Steinberg"}],"publication":"Physical Review Fluids","doi":"10.1103/PhysRevFluids.3.103302","article_number":"103302 ","_id":"17","language":[{"iso":"eng"}],"pubrep_id":"1061","citation":{"ieee":"A. Varshney and V. Steinberg, “Drag enhancement and drag reduction in viscoelastic flow,” <i>Physical Review Fluids</i>, vol. 3, no. 10. American Physical Society, 2018.","mla":"Varshney, Atul, and Victor Steinberg. “Drag Enhancement and Drag Reduction in Viscoelastic Flow.” <i>Physical Review Fluids</i>, vol. 3, no. 10, 103302, American Physical Society, 2018, doi:<a href=\"https://doi.org/10.1103/PhysRevFluids.3.103302\">10.1103/PhysRevFluids.3.103302</a>.","short":"A. Varshney, V. Steinberg, Physical Review Fluids 3 (2018).","ista":"Varshney A, Steinberg V. 2018. Drag enhancement and drag reduction in viscoelastic flow. Physical Review Fluids. 3(10), 103302.","apa":"Varshney, A., &#38; Steinberg, V. (2018). Drag enhancement and drag reduction in viscoelastic flow. <i>Physical Review Fluids</i>. American Physical Society. <a href=\"https://doi.org/10.1103/PhysRevFluids.3.103302\">https://doi.org/10.1103/PhysRevFluids.3.103302</a>","chicago":"Varshney, Atul, and Victor Steinberg. “Drag Enhancement and Drag Reduction in Viscoelastic Flow.” <i>Physical Review Fluids</i>. American Physical Society, 2018. <a href=\"https://doi.org/10.1103/PhysRevFluids.3.103302\">https://doi.org/10.1103/PhysRevFluids.3.103302</a>.","ama":"Varshney A, Steinberg V. Drag enhancement and drag reduction in viscoelastic flow. <i>Physical Review Fluids</i>. 2018;3(10). doi:<a href=\"https://doi.org/10.1103/PhysRevFluids.3.103302\">10.1103/PhysRevFluids.3.103302</a>"},"ec_funded":1}