{"author":[{"full_name":"Klotz, Lukasz","first_name":"Lukasz","id":"2C9AF1C2-F248-11E8-B48F-1D18A9856A87","last_name":"Klotz","orcid":"0000-0003-1740-7635"},{"last_name":"Lemoult","id":"4787FE80-F248-11E8-B48F-1D18A9856A87","first_name":"Grégoire M","full_name":"Lemoult, Grégoire M"},{"full_name":"Frontczak, Idalia","first_name":"Idalia","last_name":"Frontczak"},{"last_name":"Tuckerman","full_name":"Tuckerman, Laurette","first_name":"Laurette"},{"full_name":"Wesfreid, José","first_name":"José","last_name":"Wesfreid"}],"publication_status":"published","day":"01","intvolume":"         2","title":"Couette-Poiseuille flow experiment with zero mean advection velocity: Subcritical transition to turbulence","publisher":"American Physical Society","doi":"10.1103/PhysRevFluids.2.043904","_id":"513","abstract":[{"text":"We present an experimental setup that creates a shear flow with zero mean advection velocity achieved by counterbalancing the nonzero streamwise pressure gradient by moving boundaries, which generates plane Couette-Poiseuille flow. We obtain experimental results in the transitional regime for this flow. Using flow visualization, we characterize the subcritical transition to turbulence in Couette-Poiseuille flow and show the existence of turbulent spots generated by a permanent perturbation. Due to the zero mean advection velocity of the base profile, these turbulent structures are nearly stationary. We distinguish two regions of the turbulent spot: the active turbulent core, which is characterized by waviness of the streaks similar to traveling waves, and the surrounding region, which includes in addition the weak undisturbed streaks and oblique waves at the laminar-turbulent interface. We also study the dependence of the size of these two regions on Reynolds number. Finally, we show that the traveling waves move in the downstream (Poiseuille) direction.","lang":"eng"}],"quality_controlled":"1","date_updated":"2021-01-12T08:01:16Z","issue":"4","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","date_created":"2018-12-11T11:46:54Z","language":[{"iso":"eng"}],"date_published":"2017-04-01T00:00:00Z","oa":1,"publication":"Physical Review Fluids","year":"2017","main_file_link":[{"url":"https://arxiv.org/abs/1704.02619","open_access":"1"}],"volume":2,"scopus_import":1,"citation":{"short":"L. Klotz, G.M. Lemoult, I. Frontczak, L. Tuckerman, J. Wesfreid, Physical Review Fluids 2 (2017).","chicago":"Klotz, Lukasz, Grégoire M Lemoult, Idalia Frontczak, Laurette Tuckerman, and José Wesfreid. “Couette-Poiseuille Flow Experiment with Zero Mean Advection Velocity: Subcritical Transition to Turbulence.” <i>Physical Review Fluids</i>. American Physical Society, 2017. <a href=\"https://doi.org/10.1103/PhysRevFluids.2.043904\">https://doi.org/10.1103/PhysRevFluids.2.043904</a>.","apa":"Klotz, L., Lemoult, G. M., Frontczak, I., Tuckerman, L., &#38; Wesfreid, J. (2017). Couette-Poiseuille flow experiment with zero mean advection velocity: Subcritical transition to turbulence. <i>Physical Review Fluids</i>. American Physical Society. <a href=\"https://doi.org/10.1103/PhysRevFluids.2.043904\">https://doi.org/10.1103/PhysRevFluids.2.043904</a>","ama":"Klotz L, Lemoult GM, Frontczak I, Tuckerman L, Wesfreid J. Couette-Poiseuille flow experiment with zero mean advection velocity: Subcritical transition to turbulence. <i>Physical Review Fluids</i>. 2017;2(4). doi:<a href=\"https://doi.org/10.1103/PhysRevFluids.2.043904\">10.1103/PhysRevFluids.2.043904</a>","ista":"Klotz L, Lemoult GM, Frontczak I, Tuckerman L, Wesfreid J. 2017. Couette-Poiseuille flow experiment with zero mean advection velocity: Subcritical transition to turbulence. Physical Review Fluids. 2(4), 043904.","mla":"Klotz, Lukasz, et al. “Couette-Poiseuille Flow Experiment with Zero Mean Advection Velocity: Subcritical Transition to Turbulence.” <i>Physical Review Fluids</i>, vol. 2, no. 4, 043904, American Physical Society, 2017, doi:<a href=\"https://doi.org/10.1103/PhysRevFluids.2.043904\">10.1103/PhysRevFluids.2.043904</a>.","ieee":"L. Klotz, G. M. Lemoult, I. Frontczak, L. Tuckerman, and J. Wesfreid, “Couette-Poiseuille flow experiment with zero mean advection velocity: Subcritical transition to turbulence,” <i>Physical Review Fluids</i>, vol. 2, no. 4. American Physical Society, 2017."},"oa_version":"Preprint","department":[{"_id":"BjHo"}],"type":"journal_article","publist_id":"7306","status":"public","article_number":"043904","month":"04"}