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首页> 美国政府科技报告 >HGSYSTEM/UF6 model enhancements for plume rise and dispersion around buildings, lift-off of buoyant plumes, and robustness of numerical solver.
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HGSYSTEM/UF6 model enhancements for plume rise and dispersion around buildings, lift-off of buoyant plumes, and robustness of numerical solver.

机译：HGsYsTEm / UF6模型增强了羽流在建筑物周围的上升和分散，浮力羽状物的抬升以及数值求解器的稳健性。

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The HGSYSTEM/UF6 model was developed for use in preparing Safety Analysis Reports (SARs) by estimating the consequences of possible accidental releases of UF6 to the atmosphere at the gaseous diffusion plants (GDPs) located in Portsmouth, Ohio, and Paducah, Kentucky. The work that is described was completed in late 1994. During the fall and winter of 1995-96, modules were added to HGSYSTEM/UF6 to account for flow and dispersion around buildings. The original HGSYSTEM/UF6 model also contained a preliminary method for accounting for the possible lift-off of ground-based buoyant plumes. An improved model and a new set of wind tunnel data for buoyant plumes trapped in building recirculation cavities have become available that appear to be useful for revising the lift-off algorithm and modifying it for use in recirculation cavities. This improved lift-off model has been incorporated in the updated modules for dispersion around buildings.

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