Validation of a Lagrangian model plume rise scheme using the Kincaid data set |
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| Affiliation: | 1. MEIS d.o.o., Mali Vrh pri Šmarju, Slovenia;2. Group of Micrometeorology, Department of Atmospheric Sciences, University of São Paulo, São Paulo, Brazil;1. LIPAc Integrated Project Team, Rokkasho, Japan;2. F4E, Garching, Germany;3. QST, Rokkasho Fusion Institute, Rokkasho, Japan;1. Japan Atomic Energy Agency, Tokai-mura, Ibaraki, Japan;2. Japan Atomic Energy Agency, Naka-shi, Ibaraki, Japan;1. National Institute for Fusion Science, Toki, Gifu 509-5292, Japan;2. Institute of Advanced Energy, Kyoto University, Uji, Kyoto 611-0011, Japan;3. Japan Atomic Industrial Forum, Inc., Minato-ku, Tokyo 105-8605, Japan;4. Rokkasho Fusion Institute, Japan Atomic Energy Agency, Rokkasho, Aomori 039-3212, Japan;5. Naka Fusion Institute, Japan Atomic Energy Agency, Naka, Ibaraki 311-0193, Japan;6. Keio University, Yokohama, Kanagawa 223-0061, Japan |
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| Abstract: | Correct prediction of the initial rise of a plume due to momentum and buoyancy effects is an important factor in dispersion modelling. A new plume rise scheme, based upon conservation equations of mass, momentum and heat, for the Lagrangian model, NAME, is described. The conservation equations are consistent with the well-known analytical plume rise formulae for both momentum- and buoyancy-dominated plumes. The performance of the new scheme is assessed against data from the Kincaid field experiment. Results show that the new scheme adds value to the model and significantly outperforms the previous plume rise scheme. Using data from assessments of atmospheric dispersion models using the Kincaid data set, it is shown that NAME is comparable to other models over short ranges. |
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