The International                        UPDATED 28th May 2010
Journal of Ventilation
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June 2010 Edition of the IJV now Published

IAQVEC 2010 The 7th International Conference on Indoor Air Quality and Energy Conservation in Buildings

August 15 - 18 2010  Syracuse, New York, USA

Paper 4:  Volume 5 No.2 Sept 2006 Edition

CFD Modelling of Cabin Air Ventilation in the International Space Station: A Comparison of RANS and LES Data with Test Measurements for the Columbus Module

Evgueni M. Smirnov¹, Nikolay G. Ivanov¹, Denis S. Telnov¹ and Chang H. Son²

¹St. Petersburg State Polytechnic University , 195251, Polytechnicheskaya 29, Russia
²The Boeing Company, Houston , Texas , U.S.A.  

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Abstract

Ventilation characteristics of the Columbus module are numerically predicted on the basis of the Reynolds-Averaged Navier-Stokes (RANS) and Large Eddy Simulation (LES) approaches. The steady-state RANS computations were performed using the high-Reynolds-number k-e turbulence model, and the Smagorinsky-Lilly subgrid-scale model was used for LES. The computed results were compared with experimental data available for spatial distributions of the time-averaged absolute velocity magnitude. On the basis of LES data, distinctions in the fields of this quantity and the whole mean velocity were analysed. A procedure for evaluation of the time-averaged absolute velocity spatial distributions using RANS data on the mean velocity and the turbulent kinetic energy is suggested and examined.

Key words:  ventilation, International Space Station, ISS, turbulence modelling, RANS, LES, CFD, measurement data.

References

Columbus : (2000) “ Columbus Cabin Ventilation Qualification Test Report”. COL-DOR-TR-3002, Daimler-Chrysler Aerospace.

Fluent: (2003) “Fluent 6.1 User’s Guide”. Fluent Inc.

Gambit: (2003) Gambit 2.1 User’s Guide. Fluent Inc.

Launder BE and Spalding DB: (1974). “The Numerical Computation of Turbulent Flows”, Computer Methods in Applied Mechanics and Engineering, 3, pp 269-289.

NASA: (1995), “Man-Systems Integration Standards”, NASA-STD-3000, 1, Rev. B, NASA Johnson Space Center , Houston , TX .

Smagorinsky J: (1963) “General circulation experiments with the primitive equations. I. The basic experiments”, Mon. Weather Rev., 91, pp99-164.

Smirnov EM, Ivanov NG, Telnov DS, Son CH and Aksamentov VK. (2004) “Computational fluid dynamics study of air flow characteristics in the Columbus Module”, SAE Transactions, Journal of Aerospace, Section 1, 113, pp1155-1162.