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MODELING OF MASS DIFFUSION IN POROUS SOLIDS AND PREDICTION OF INDOOR VOCs CONCENTRATION BASED ON MACROSCOPIC MODEL : Physical model and numerical analysis of VOCs emission from building materials Part 2
多孔質固体内部における物質拡散のモデル化とミクロ-マクロモデルによる室内VOCs濃度予測 : 揮発性有機化合物(VOCs)の吸脱着・放散現象のモデル化とその数値予測(その2)

Jun-ichi FUJIMURA, Shuzo MURAKAMI, Shinsuke KATO, Yasushi KONDO, Yuto TADOKORO
2001 Journal of Architecture and Planning (Transactions of AIJ)  
In the previous paper , the simulated results of the VOCs concentration in a single room were . demonstrated with macroscopic models . In this paper , these models were extended to the muitip 且 e room problem and the results of severa 正cases were shown . Some CFD simulations were also conducted to study 、 VOCs distribution in a room based on the standard k ・ ε model , in which the emission rate at material . surfaces was evaluated by the macroscopic 血odel andit was given as the boundary
more » ... he boundary condition ofCFD . When ち he diffusion proces8 in solids was regarded as a dominated process , and the convective 即 a3s transfer process at the boundary layer was not so impo 此 ant , th 骨 mass flux can be estimated only on the basis ofthe int 自 rnal diffusion process . This leads to a drastic reduction of the CPU time f6r analysis , and even the ihree − dimensiollal GFD prediction of VOCs distribution in a room can be achieved with reasonable CPU time 、 1
doi:10.3130/aija.66.57_2 fatcat:rdp4ys75gfhknmcmleir5t6uzq