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首页> 美国政府科技报告 >PARAMETRIC STUDIES WITH AN ATMOSPHERIC DIFFUSION MODEL THAT ASSESSES TOXIC FUEL HAZARDS DUE TO THE GROUND CLOUDS GENERATED BY ROCKET LAUNCHES
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PARAMETRIC STUDIES WITH AN ATMOSPHERIC DIFFUSION MODEL THAT ASSESSES TOXIC FUEL HAZARDS DUE TO THE GROUND CLOUDS GENERATED BY ROCKET LAUNCHES

机译：基于大气扩散模型的参数研究，用于评估由火箭发射产生的地面云引起的有毒燃料危害

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Parametric studies were made with a multilayer atmospheric diffusion model to place quantitative limits on the uncertainty of predicting ground-level toxic rocket-fuel concentra¬tions. The features of greatest interest involve the exhaust distributions in the ground cloud, cloud stabilized geometry, atmospheric diffusion coefficients, the effects of exhaust plume afterburning of carbon monoxide CO, assumed surface mixing-layer division in the model, and model sensitivity to different meteorological regimes. Depending on assumed input parameters, large-scale differences in ground-level predictions were quantitatively described. The model characterization of cloud along wind growth for several meteorological conditions was shown to be in error because of incorrect application of previous diffusion theory. In addition, rocket-plume calculations indicate that almost all of the rocket-motor carbon monoxide is afterburned to carbon dioxide CO2, thus reducing toxic hazards due to CO. The afterburning was also shown to have a significant effect on cloud stabilization height and on ground-level concentrations of exhaust products.

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