تقرير
How to create analogue black hole or white fountain horizons and LASER cavities in experimental free surface hydrodynamics?
| العنوان: | How to create analogue black hole or white fountain horizons and LASER cavities in experimental free surface hydrodynamics? |
|---|---|
| المؤلفون: | Bossard, Alexis, James, Nicolas, Aucouturier, Camille, Fourdrinoy, Johan, Robertson, Scott James, Rousseaux, Germain |
| المساهمون: | CURIOSITY Institut Pprime, Département Fluides, Thermique et Combustion Institut Pprime (Département FTC), Institut Pprime UPR 3346 (PPrime Poitiers ), Université de Poitiers = University of Poitiers (UP)-École Nationale Supérieure de Mécanique et d’Aérotechnique Poitiers (ISAE-ENSMA )-Centre National de la Recherche Scientifique (CNRS)-Université de Poitiers = University of Poitiers (UP)-École Nationale Supérieure de Mécanique et d’Aérotechnique Poitiers (ISAE-ENSMA )-Centre National de la Recherche Scientifique (CNRS)-Institut Pprime UPR 3346 (PPrime Poitiers ), Université de Poitiers = University of Poitiers (UP)-École Nationale Supérieure de Mécanique et d’Aérotechnique Poitiers (ISAE-ENSMA )-Centre National de la Recherche Scientifique (CNRS)-Université de Poitiers = University of Poitiers (UP)-École Nationale Supérieure de Mécanique et d’Aérotechnique Poitiers (ISAE-ENSMA )-Centre National de la Recherche Scientifique (CNRS), Laboratoire de mathématiques et applications UMR 7348 (LMA Poitiers ), Université de Poitiers = University of Poitiers (UP)-Centre National de la Recherche Scientifique (CNRS), Université de Poitiers = University of Poitiers (UP)-École Nationale Supérieure de Mécanique et d’Aérotechnique Poitiers (ISAE-ENSMA )-Centre National de la Recherche Scientifique (CNRS), CNRS Chair in Physical Hydrodynamics (reference ANR-22-CPJ2-0039-01)., ANR-18-EURE-0010,INTREE,Poitiers Graduate School on physico-chemical properties of INTerfaces for AeRonautic, Energy and Environment(2018) |
| المصدر: | https://hal.science/hal-04167562Test ; 2023. |
| بيانات النشر: | HAL CCSD |
| سنة النشر: | 2023 |
| المجموعة: | Université de Poitiers: Publications de nos chercheurs.ses (HAL) |
| مصطلحات موضوعية: | Analogue Gravity, Transcriticality, Open Channel Flows, Black Hole Laser, [PHYS.MECA.MEFL]Physics [physics]/Mechanics [physics]/Fluid mechanics [physics.class-ph], [PHYS.GRQC]Physics [physics]/General Relativity and Quantum Cosmology [gr-qc] |
| الوصف: | Transcritical flows in free surface hydrodynamics emulate black hole horizons and their timereversed versions known as white fountains. Both analogue horizons have been shown to emit Hawking radiation, the amplification of waves via scattering at the horizon. Here we report on an experimental validation of the hydrodynamic laws that govern transcritical flows, for the first time in a free surface water channel using an analogue space-time geometry controlled by a bottom obstacle. A prospective study, both experimental and numerical, with a second obstacle downstream of a first one is presented to test in the near-future the analogous black hole laser instability, namely the super-amplification of Hawking radiation by successive bounces on a pair of black and white horizons within cavities which allow the presence of negative energy modes necessary for the amplification process. Candidate hydrodynamic regimes are discussed thanks to a phase diagram based on the scaled relative heights of both obstacles and the ratio of flow to wave speed in the upstream region. |
| نوع الوثيقة: | report |
| اللغة: | English |
| العلاقة: | hal-04167562; https://hal.science/hal-04167562Test; https://hal.science/hal-04167562/documentTest; https://hal.science/hal-04167562/file/BHLEffect_main.pdfTest |
| الإتاحة: | https://hal.science/hal-04167562Test https://hal.science/hal-04167562/documentTest https://hal.science/hal-04167562/file/BHLEffect_main.pdfTest |
| حقوق: | http://creativecommons.org/licenses/by-nc-ndTest/ ; info:eu-repo/semantics/OpenAccess |
| رقم الانضمام: | edsbas.4EB1D27E |
| قاعدة البيانات: | BASE |
| الوصف غير متاح. |