Spills on Flat Inclined Pavements

Simmons, Carver S. ; Keller, Jason M. ; Hylden, Jeff L.

Pacific Northwest National Laboratory (U.S.)

关键词: Viscosity;    Hazardous Materials Spills;    Concretes;    54 Environmental Sciences;    Pavements;   

DOI  :  10.2172/15020425
RP-ID  :  PNNL-14577
RP-ID  :  AC05-76RL01830
RP-ID  :  15020425

美国|英语

来源: UNT Digital Library

【 摘 要 】

This report describes the general spill phenomenology for liquid spills occurring on relatively impermeable surfaces such as concrete or asphalt pavement and the development and application of a model to describe the time evolution of such spills. The discussion assumes evaporation and degradation are negligible and a homogeneous surface. In such an instance, the inherent interfacial properties determine the spatial extent of liquid spreading with the initial flow being controlled by the release rate of the spill and by the liquids resistance to flow as characterized by its viscosity. A variety of spill scenarios were simulated and successful implementation of the model was achieved. A linear relationship between spill area and spill volume was confirmed. The simulations showed spill rate had little effect on the final spill area. Slope had an insignificant effect on the final spill area, but did modify spill shape considerably. However, a fluid sink on the edge of the simulation domain, representing a storm drain, resulted in a substantial decrease in spill area. A bona fide effort to determine the accuracy of the model and its calculations remain, but comparison against observations from a simple experiment showed the model to correctly determine the spill area and general shape under the conditions considered. Further model verification in the form of comparison against small scale spill experiments are needed to confirm the models validity.