Abstract : The influence of radiative heat transfer in a CO2 pipe flow is numerically investigated at different pressures. Coupled heat and mass transfer, including radiation transport, are modeled. The physical models and the high temperature and high pressure radiative properties method of computation are presented. Simulations are conducted for pure CO2 flows in a high temperature pipe at 1100 K (with radius 2 cm) with a fixed velocity (1 m.s −1) and for different operating pressures, 0.1, 1, 5 and 20 MPa (supercritical CO2). The coupling between the temperature and velocity fields is discussed and it is found that the influence of radiation absorption is important at low pressure and as the operating pressure increases above 5 MPa the influence of radiation becomes weaker due to an increase of CO2 optical thickness.
https://hal-univ-perp.archives-ouvertes.fr/hal-01178150
Contributor : Olivier Savoyat
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Submitted on : Friday, July 17, 2015 - 2:52:22 PM
Last modification on : Thursday, January 11, 2018 - 6:22:15 AM
Long-term archiving on : Sunday, October 18, 2015 - 11:03:30 AM
