0

Full Content is available to subscribers

Subscribe/Learn More  >

Experimental Investigation and Numerical Modeling of Natural Convection Around an Infrared Montgolfiere Balloon at High Rayleigh Number

[+] Author Affiliations
G. Leplat, D. Donjat, P. Reulet, E. Laroche, P. Millan

ONERA, Toulouse, France

G. Parot, G. Letrenne

Centre National d’Etudes Spatiales, Toulouse, France

Paper No. HT2012-58237, pp. 707-716; 10 pages
doi:10.1115/HT2012-58237
From:
  • ASME 2012 Heat Transfer Summer Conference collocated with the ASME 2012 Fluids Engineering Division Summer Meeting and the ASME 2012 10th International Conference on Nanochannels, Microchannels, and Minichannels
  • Volume 1: Heat Transfer in Energy Systems; Theory and Fundamental Research; Aerospace Heat Transfer; Gas Turbine Heat Transfer; Transport Phenomena in Materials Processing and Manufacturing; Heat and Mass Transfer in Biotechnology; Environmental Heat Transfer; Visualization of Heat Transfer; Education and Future Directions in Heat Transfer
  • Rio Grande, Puerto Rico, USA, July 8–12, 2012
  • Conference Sponsors: Heat Transfer Division
  • ISBN: 978-0-7918-4477-9
  • Copyright © 2012 by ASME

abstract

The present study concerns the investigation of external natural convection driven around a Montgolfiere scientific balloon. Ground measurements are carried out on a small scale heated model located within an enclosure. Non intrusive planar Particle Image Velocimetry and thermocouple sensors are used to characterize both dynamical behavior of the flow generated around the balloon and heat transfers on its surface. It is shown that a relative good agreement is reached on wall heat transfers with simplified axisymmetrical 2D RANS simulations. However significant discrepancies exist regarding the analysis of the flow topology and dynamic quantities in comparison with the experimental data. The proposed numerical rebuilding is thus completed with a 3D Delayed Detached Eddy Simulation (DDES) in order to overcome conventional RANS approach inability to represent low frequency thermal plume instabilities.

Copyright © 2012 by ASME

Figures

Tables

Interactive Graphics

Video

Country-Specific Mortality and Growth Failure in Infancy and Yound Children and Association With Material Stature

Use interactive graphics and maps to view and sort country-specific infant and early dhildhood mortality and growth failure data and their association with maternal

NOTE:
Citing articles are presented as examples only. In non-demo SCM6 implementation, integration with CrossRef’s "Cited By" API will populate this tab (http://www.crossref.org/citedby.html).

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In