VENTILATION MODEL REPORT

[摘要] The purpose of the Ventilation Model is to simulate the heat transfer processes in and around waste emplacement drifts during periods of forced ventilation. The model evaluates the effects of emplacement drift ventilation on the thermal conditions in the emplacement drifts and surrounding rock mass, and calculates the heat removal by ventilation as a measure of the viability of ventilation to delay the onset of peak repository temperature and reduce its magnitude. The heat removal by ventilation is temporally and spatially dependent, and is expressed as the fraction of heat carried away by the ventilation air compared to the fraction of heat produced by radionuclide decay. One minus the heat removal is called the wall heat fraction, or the remaining amount of heat that is transferred via conduction to the surrounding rock mass. Downstream models, such as the ''Multiscale Thermohydrologic Model'' (BSC 2001), use the wall heat fractions as outputted from the Ventilation Model to initialize their postclosure analyses.

[发布日期] 2002-10-31 [发布机构] United States. Department of Energy. Office of Scientific and Technical Information.

[关键词] Heat Transfer;Radioactive Waste Facilities;Mathematical Models;Heat Extraction;12 Management Of Radioactive Wastes, And Non-Radioactive Wastes From Nuclear Facilities