Direct numerical simulations of turbulent flow through a stationary and rotating infinite serpentine passage

Serpentine passages are found in a number of engineering applications including turbine blade cooling passages. The design of effective cooling passages for high-temperature turbine blades depends in part on the ability to predict heat transfer, thus requiring an accurate representation of the turbulent flow field. These passages are subjected to strong curvature and rotational effects, and the resulting turbulent flow field is fairly complex. An understanding of the flow physics for flows with strong curvature and rotation is required in order to improve the design of turbine blade cooling passages. Experimental measurements of certain turbulence quantities for such configurations can be challenging to obtain, especially near solid surfaces, making the serpentine passage an ideal candidate for a direct numerical simulation (DNS). A DNS study has been conducted to investigate the coupled effect of strong curvature and rotation by simulating turbulent flow through a fully developed, smooth wall, round-ended, isothermal serpentine channel subjected to orthogonal mode rotation. The geometry investigated has an average radius of curvature Rc/δ=2.0 in the curved section and dimensions 12πδ×2δ×3πδ in the streamwise, transverse, and spanwise directions. The computational domain consists of periodic inflow/outflow boundaries, two solid wall boundaries, and periodic boundaries in the spanwise direction. The simulations were conducted for Reynolds number, Reb=5600, and rotation numbers, Rob,z=0 and 0.32. Differences observed between the stationary and rotating cases are discussed in terms of the mean velocity, secondary flow, and Reynolds stresses

3D laser anemometry in a rotating cooling chanel

Communication to : 43rd ASME gas turbine and aeroengine congress, exposition and users symposium, Stockholm (Sweden), June 2-5, 1998SIGLEAvailable from INIST (FR), Document Supply Service, under shelf-number : 22419, issue : a.1998 n.153 / INIST-CNRS - Institut de l'Information Scientifique et TechniqueFRFranc

Echanges thermiques dans les canaux de refroidissement des aubes de turbine

Paru dans : 80th PEP/AGARD on 'Heat transfer and cooling in turbines', Antalya (Turquie), 12-16 octobre 1992Available at INIST (FR), Document Supply Service, under shelf-number : 22419, issue : a.1992 n.166 / INIST-CNRS - Institut de l'Information Scientifique et TechniqueSIGLEFRFranc

3D LDV measurements in rotating cooling channel

Communication to : 9th international symposium on applications of laser techniques to fluid mechanics, Lisboa (Portugal), July 13-16, 1998Available from INIST (FR), Document Supply Service, under shelf-number : 22419, issue : a.1998 n.98 / INIST-CNRS - Institut de l'Information Scientifique et TechniqueSIGLEFRFranc

Thin film temperature sensors for use in turbomachine experimentation

Communication to : 39th Int. Instrumentation Symp., (Instrument Society of America) Albuquerque, CO (USA), May 2-6, 1993SIGLEAvailable at INIST (FR), Document Supply Service, under shelf-number : 22419, issue : a.1993 n.51 / INIST-CNRS - Institut de l'Information Scientifique et TechniqueFRFranc

Thin film temperature heat fluxmeters

Publie dans : Metallurgical coatings and thin films 1990, reprinted from the Journal thin solid films, vol. 193/194, (1990), pp. 924-934, Elsevier science Publ. CoAvailable at INIST (FR), Document Supply Service, under shelf-number : 22419, issue : a.1991 n.18 / INIST-CNRS - Institut de l'Information Scientifique et TechniqueSIGLEFRFranc

Thin film temperature heat fluxmeters

Tire de 17th Int. Conf. on metallurgical coatings, San Diego, Avril 2-6, 1990SIGLEAvailable at INIST (FR), Document Supply Service, under shelf-number : 22419, issue : a.1990 n.20 / INIST-CNRS - Institut de l'Information Scientifique et TechniqueFRFranc

3D laser anemometry in a rotating cooling ribbed U-channel

Communication to : XIV symposium ISOABE, Florence (Italy), September 05-10, 1999SIGLEAvailable from INIST (FR), Document Supply Service, under shelf-number : 22419, issue : a.2000 n.55 / INIST-CNRS - Institut de l'Information Scientifique et TechniqueFRFranc

Numerical simulation of flows inside internal cavities of turbine rotor blades

Paru dans : Eurotherm seminar No 25 : 'Heat transfer in single phase flows', Pay (France), July 8-9, 1991Available at INIST (FR), Document Supply Service, under shelf-number : 22419, issue : a.1991 n.99 / INIST-CNRS - Institut de l'Information Scientifique et TechniqueSIGLEFRFranc