• 关键词：油污染预报  湍浮力流  全场模拟  k-ε模型

• 基金项目：国家自然科学基金资助课题

• 沈永明
• 大连理工大学, 116023

• 赵文谦
• 大连理工大学, 116023

• 倪浩清
• 中国科学院、水利电力部水利水电科学研究院, 北京

• 摘要：以通用的k-ε湍流模型为基础,针对油—水两相流动体系的特点,提出了油污染全场模拟的湍浮力流动k-ε模型.模型不仅在控制方程中计及了密度变化,而且在控制方程中加进了浮力项,并对湍流Schmidt数也作了浮力修正.从而计及了浮力对紊动的影响.结果表明,模型的模拟效果非常满意.

• Abstract：Based on the universal k-e model of turbulent flow, taking the characters of oil-water two-phase flows into account, the k-e model of turbulent buoyant flows for whole field simulation of oil pollution is developed in this paper. In the control equations of the model density variation is considered. The buoyancy terms in the control equations are included. Buoyancy revision of Schmidt number also be carried out. The directional effects of buoyancy on turbulence are accounted in the model. It has shown that the results of numerical simulation are satisfactory.

• Key words：prediction  oil pollution  turbulent buoyant flows  whole field simulation  k-ε model

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