@inproceedings{dee30cf2cf26441fa414d1d13ba1ecc0,
title = "Numerical and experimental modeling of natural convection for a cryogenic prototype of a Titan Montgolfiere",
abstract = "Natural convection in a spherical geometry is considered for prediction of the buoyancy characteristics of one meter diameter single- and double-walled balloons in a cryogenic environment. The steady-state flow characteristics obtained by solving the Reynolds- Averaged Navier Stokes equations (RANS) with a standard κ-ε model are used to determine the balloon performance in terms of net buoyancy as a function of heat input. Thermal radiation effects on the overall balloon performance are also investigated. The results obtained compared favorably with the corresponding cryogenic experiments conducted at the same scale in a cryogenic facility. In addition, both numerical and experimental results were compared with engineering heat transfer correlations used in system-level models of the Titan Montgolfiere. Finally, we examine scaling issues for the full-scale Titan Montgolfieres.",
author = "Yu Feldman and T. Colonius and M. Pauken and Hall, {J. L.} and Jones, {J. A.}",
year = "2011",
month = dec,
day = "1",
doi = "10.2514/6.2011-6860",
language = "English",
isbn = "9781600869419",
series = "11th AIAA Aviation Technology, Integration,and Operations (ATIO) Conference, including the AIAA Balloon Systems Conference and 19th AIAA Lighter-Than-Air Technology Conference",
booktitle = "11th AIAA Aviation Technology, Integration, and Operations (ATIO) Conference, including the AIAA Balloon Systems Conference and 19th AIAA Lighter-Than-Air Technology Conference",
note = "11th AIAA Aviation Technology, Integration, and Operations (ATIO) Conference, including the AIAA Balloon Systems Conference and 19th AIAA Lighter-Than-Air Technology Conference 2011 ; Conference date: 20-09-2011 Through 22-09-2011",
}