Aerodynamics in the open channel of the Sistan-type wind-mill with vertical axis wind turbine

International Journal of Numerical Methods for Heat and Fluid FlowThe purpose of this paper is to examine the details of the air mass flow and aerodynamical phenoména across a channel containing a large vertical axis wind turbine. The considered model reproduces as closely as possible the real assembly of the Sistan-type wind-mill whose top is open. The technical results of this work could be used for the restoration and operation of this assembly whose historical and architectural values are recognized.L'objectif de cet article est d’examiner les détails d'un écoulement dans un canal contenant une turbine à axe vertical. Les résultats techniques de ce travail pourront être utilisés pour la restauration et la mise en service de ce dispositif dont la valeur historique et architecturale est reconnue

Low and high enthalpy shock wave / boundary layer interactions around cylinder-flare models

The paper describes four test-cases around the same configuration type: a hollow cylinder flare model. The first three test-cases are relative to cold hypersonic flow and the fourth one to hot hypersonic flow: (i) a purely laminar low enthalpy interaction performed at Mach 9.92; (ii) a transitional low enthalpy interaction performed at Mach 5; (iii) a fully low enthalpy turbulent interaction performed at Mach 5; and (iν) a high enthalpy interaction performed at Mach 9.4

Martin Peter, successeur d'Eiffel à la soufflerie d'Auteuil

International audienceCet article raconte la vie de Martin Peter à la soufflerie Eiffel de Paris

DSMC Simulation of Shock/Shock Interactions: Emphasis on Type IV Interactions

This paper presents the results of a numerical study of shock/shock interactions that include both the Edney type IV and type III interactions, with emphasis on the type IV interactions. Computations are made using the direct simulation Monte Carlo (DSMC) method of Bird for Mach 10 air flow, as produced in the ONERA R5Ch low-density wind tunnel. The simulations include the flow about a shock generator which creates a relatively weak oblique shock that impinges on a much stronger cylinder bow shock. The sensitivity and characteristics of the interactions are examined by varying the horizontal distance separating the shock generator leading edge and cylinder. Results of the simulation for one separation distance are compared with wind tunnel measurements. Comparisons are made for surface heating and pressure and for flow-field values of density and rotational temperatures, as obtained with the Dual-line Coherent Anti-Stokes Scattering (DL-CARS) technique. The comparisons between experiment and calculation yield a consistent description of the shock interaction features and a consistent description of the surface heating and pressure distributions, with the exception of the peak values-the computed values being greater than the measured values

Mach 3 shock-wave unsteadiness alleviation using a negative corona discharge

International audienc

Experimental aspects of code verification/validation Application to internal aerodynamics

Communication to : Verification and validation of computational fluid dynamics, June 05-08, 2000SIGLEAvailable from INIST (FR), Document Supply Service, under shelf-number : 22419, issue : a.2000 n.155 / INIST-CNRS - Institut de l'Information Scientifique et TechniqueFRFranc

Transitional shock wave/boundary layer interaction in hypersonic flow

Communication to : 3rd international symposium on atmospheric reentry vehicles and systems, Arcachon (France), March 24-27, 2003SIGLEAvailable from INIST (FR), Document Supply Service, under shelf-number : 22419, issue : a.2003 n.51 / INIST-CNRS - Institut de l'Information Scientifique et TechniqueFRFranc

Utilisation d'un code Navier-Stokes dans les recherches fondamentales a la soufflerie hypersonique laminaire R5Ch

Communication to : 30"eme colloque d'aerodynamique appliquee : utilisation des calculs 'Navier-Stokes' pour les applications, Ecole Centrale de Nantes (France), 25-27 octobre 1993SIGLEAvailable at INIST (FR), Document Supply Service, under shelf-number : 22419, issue : a.1994 n.2 / INIST-CNRS - Institut de l'Information Scientifique et TechniqueFRFranc