Zobrazeno 1 - 10
of 111
pro vyhledávání: '"Ravelet Florent"'
Autor:
Nguyen Van-Thang, Danlos Amelie, Ravelet Florent, Deligant Michael, Solis Moises, Khelladi Sofiane, Bakir Farid
Publikováno v:
E3S Web of Conferences, Vol 321, p 02011 (2021)
Centrifugal compressors are widely used in many industrial applications because of their advantages. However, these turbomachines suffer at a low-flow rate from instabilities, such as rotating stall and surge. That leads to operational failure, press
Externí odkaz:
https://doaj.org/article/c9fc94c6b65e4188a4c9560e961f38a8
Publikováno v:
E3S Web of Conferences, Vol 321, p 01019 (2021)
The aim of this paper is to study by CFD the performance and to characterize the velocity fields in the wake of an horizontal axis wind turbine. The design of this wind turbine is far from classical as it has been designed to work at very low angular
Externí odkaz:
https://doaj.org/article/fa4f9f92d7f24f63a6c9d087c8e2cf88
Autor:
Larabi Abderrahim, Pereira Michael, Ravelet Florent, Azzam Tarik, Oualli Hamid, Menfoukh Laiche, Bakir Farid
Publikováno v:
E3S Web of Conferences, Vol 321, p 01011 (2021)
In this paper, 3D numerical simulations have been carried out to enhance the understanding of a flow over a passive control device composed of micro cylinder with, d/c = 1.34% placed in the vicinity of NACA0012 aerofoil wing, by means of γ–Reθt t
Externí odkaz:
https://doaj.org/article/edaf51e8ac174a0ca6f9e3e4c85fa136
We present a detailed study of of a global bifurcation occuring in a turbulent von K\'arm\'an swirling flow. In this system, the statistically steady states progressively display hysteretic behaviour when the Reynolds number is increased above the tr
Externí odkaz:
http://arxiv.org/abs/1405.0813
Publikováno v:
Phys. Rev. Lett. 111, 234502 (2013)
We study the influence of the forcing on the steady turbulent states of a von K\'arm\'an swirling flow, at constant impeller speed, or at constant torque. We find that the different forcing conditions change the nature of the stability of the steady
Externí odkaz:
http://arxiv.org/abs/1301.1810
Publikováno v:
Journal of Fluids Engineering 136, 10 (2014) Paper No: FE-13-1291
Cavitation is a limiting phenomenon in many domains of fluid mechanics. Instabilities of a partial cavity developed on an hydrofoil, a converging-diverging step or in an inter-blade channel in turbomachinery, have already been investigated and descri
Externí odkaz:
http://arxiv.org/abs/1212.4243
Publikováno v:
Journal of Fluids Engineering 134 (2012) 104504
An experimental study on the design of counter-rotating axial-flow fans was carried out. The fans were designed using an inverse method. In particular, the system is designed to have a pure axial discharge flow. The counter-rotating fans operate in a
Externí odkaz:
http://arxiv.org/abs/1208.6396
Autor:
Chebel, Nicolas Abi, Masbernat, Olivier, Risso, Frédéric, Guiraud, Pascal, Ravelet, Florent, Dalmazzone, Christine, Noïk, Christine
The present work investigates free damped oscillations of an oil drop in water after its release from a capillary tube. Both pure heptane drops and diluted crude oil drops are considered (in the second case the interface is covered by amphiphilic spe
Externí odkaz:
http://arxiv.org/abs/0806.3030
Publikováno v:
Journal of Fluid Mechanics 601 (2008) 339-364
We study the transition from laminar flow to fully developed turbulence for an inertially-driven von Karman flow between two counter-rotating large impellers fitted with curved blades over a wide range of Reynolds number (100 - 1 000 000). The transi
Externí odkaz:
http://arxiv.org/abs/0801.3357
Publikováno v:
Physics of Fluids 22 (2010) 055103
We experimentally study the turbulent flow between two coaxial and independently rotating cylinders. We determined the scaling of the torque with Reynolds numbers at various angular velocity ratios (Rotation numbers), and the behaviour of the wall sh
Externí odkaz:
http://arxiv.org/abs/0712.2750