The flow structures and heat transfer characteristics of rectangle channel with the new type of vortex generators are obtained using large eddy simulation (LES) and by the application of the hydromechanics software FLUENT6.3. The bevel-cut half-elliptical column vortex generators, which is one model of the passive heat transfer enhancement, are laid on the three-dimensional rectangle channel. The instantaneous characteristic and the variational law of various parameters, such as the velocity, the temperature, the pressure and the vorticity magnitude, is analyzed to find out the temperature stripe structure that is similar with the velocity stripe in the temperature field. A turbulent boundary layer interacting with the disturbance of the vortex generators, is investigated using a “coherent structure” type of approach. The coherent structure and the streak structure of turbulent boundary layer flow are showed and the characteristic of vortex induced by vortex generator and its influence on turbulent coherent structure are analyzed. The control of the coherent structure induced by vortex generator plays more important role in heat transfer enhancement and drag reduction. And this fow configuration is of interest in terms of both heat transfer and skin friction control. The result of simulation indicates that the turbulence coherent structure directly affects the temperature gradient at the wall and the heat transfer enhancement mechanism of vortex generator is explained. Then we can seek suitable form of vortex generator and structure parameters, in order to achieve enhanced heat transfer and flow of drag reduction.
Skip Nav Destination
2010 14th International Heat Transfer Conference
August 8–13, 2010
Washington, DC, USA
Conference Sponsors:
- Heat Transfer Division
ISBN:
978-0-7918-4936-1
PROCEEDINGS PAPER
Large Eddy Simulation of Turbulent Flow and Heat Transfer Characteristics in Rectangle Channel With Vortex Generators Available to Purchase
Juan Wen,
Juan Wen
Hebei University of Technology, Tianjin, China
Search for other works by this author on:
Li Yang,
Li Yang
Hebei University of Technology, Tianjin, China
Search for other works by this author on:
Cheng Ying Qi
Cheng Ying Qi
Hebei University of Technology, Tianjin, China
Search for other works by this author on:
Juan Wen
Hebei University of Technology, Tianjin, China
Li Yang
Hebei University of Technology, Tianjin, China
Cheng Ying Qi
Hebei University of Technology, Tianjin, China
Paper No:
IHTC14-22072, pp. 793-799; 7 pages
Published Online:
March 1, 2011
Citation
Wen, J, Yang, L, & Qi, CY. "Large Eddy Simulation of Turbulent Flow and Heat Transfer Characteristics in Rectangle Channel With Vortex Generators." Proceedings of the 2010 14th International Heat Transfer Conference. 2010 14th International Heat Transfer Conference, Volume 1. Washington, DC, USA. August 8–13, 2010. pp. 793-799. ASME. https://doi.org/10.1115/IHTC14-22072
Download citation file:
12
Views
Related Proceedings Papers
Related Articles
Large Eddy Simulation of Turbulent Heat Transfer in an Orthogonally Rotating Square Duct With Angled Rib Turbulators
J. Heat Transfer (October,2001)
Large Eddy Simulations of Flow and Heat Transfer in Rotating Ribbed Duct Flows
J. Heat Transfer (May,2005)
Large Eddy Simulation of Film Cooling Flow From an Inclined Cylindrical Jet
J. Turbomach (October,2003)
Related Chapters
An Investigation of Tip-Vortex Turbulence Structure using Large-Eddy Simulation
Proceedings of the 10th International Symposium on Cavitation (CAV2018)
Cavitating Structures at Inception in Turbulent Shear Flow
Proceedings of the 10th International Symposium on Cavitation (CAV2018)
Large Eddy Simulations of a Confined Tip-Leakage Cavitating Flow with Special Emphasis on Vortex Dynamics
Proceedings of the 10th International Symposium on Cavitation (CAV2018)