{"type":"journal_article","date_published":"2018-10-15T00:00:00Z","pubrep_id":"1061","isi":1,"oa_version":"Published Version","volume":3,"article_processing_charge":"No","publist_id":"8038","title":"Drag enhancement and drag reduction in viscoelastic flow","user_id":"c635000d-4b10-11ee-a964-aac5a93f6ac1","file":[{"date_created":"2018-12-12T10:10:14Z","content_type":"application/pdf","access_level":"open_access","file_name":"IST-2018-1061-v1+1_PhysRevFluids.3.103302.pdf","checksum":"e1445be33e8165114e96246275600750","date_updated":"2020-07-14T12:45:12Z","relation":"main_file","creator":"system","file_size":1409040,"file_id":"4800"}],"issue":"10","project":[{"name":"ISTplus - Postdoctoral Fellowships","grant_number":"754411","_id":"260C2330-B435-11E9-9278-68D0E5697425","call_identifier":"H2020"}],"month":"10","status":"public","citation":{"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>","short":"A. Varshney, V. Steinberg, Physical Review Fluids 3 (2018).","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>.","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>","ista":"Varshney A, Steinberg V. 2018. Drag enhancement and drag reduction in viscoelastic flow. Physical Review Fluids. 3(10), 103302.","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>."},"publication":"Physical Review Fluids","external_id":{"isi":["000447311500001"]},"file_date_updated":"2020-07-14T12:45:12Z","date_created":"2018-12-11T11:44:11Z","year":"2018","publication_status":"published","ec_funded":1,"oa":1,"quality_controlled":"1","day":"15","date_updated":"2023-09-11T12:59:28Z","language":[{"iso":"eng"}],"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."}],"article_number":"103302 ","has_accepted_license":"1","ddc":["532"],"_id":"17","doi":"10.1103/PhysRevFluids.3.103302","department":[{"_id":"BjHo"}],"publisher":"American Physical Society","scopus_import":"1","intvolume":"         3","author":[{"id":"2A2006B2-F248-11E8-B48F-1D18A9856A87","full_name":"Varshney, Atul","first_name":"Atul","last_name":"Varshney","orcid":"0000-0002-3072-5999"},{"first_name":"Victor","full_name":"Steinberg, Victor","last_name":"Steinberg"}]}