CFD assessment of intake fraction in the indoor environment 室内环境下取水量的CFD评价.pdfVIP

Building and Environment 45 (2010) 1968–1975 Contents lists available at ScienceDirect Building and Environment journal homepage: www.els /locate/buildenv CFD assessment of intake fraction in the indoor environment Jackie S. Russo, H. Ezzat Khalifa * Syracuse University, Syracuse, NY, USA a r t i c l e i n f o a b s t r a c t Article history: In this paper we use a validated CFD model to calculate the inhalation exposure, expressed as an intake Received 21 October 2009 fraction (iF), of a seated person in an office with different contaminant sources, a floor diffuser, and Received in revised form a ceiling vent. These sources include the floor, the walls, a desk, and the human body. First, experimental 22 December 2009 data is used to determine the correct turbulent Schmidt number for the computational model to predict Accepted 19 January 2010 the transport of the species in an indoor environment. It was found at a turbulent Schmidt number of w0.9 produced the best fit when compared to experimental data. Then, the iF was calculated for two Keywords: representations of the computer simulated person (CSP): a CSP with detailed surface geometry, and IAQ Personalized ventilation a simplified CSP with multi-block geometry. It was found that the simplified multi-block geometry is not Intake fraction adequat