Yapa P D, Zheng L, Chen F
Department of Civil and Environmental Engineering, Clarkson University, Potsdam, NY 13699-5710, USA.
Mar Pollut Bull. 2001 Jul-Dec;43(7-12):234-41. doi: 10.1016/s0025-326x(01)00086-8.
When gas is released in deepwater, the high pressure and low temperature can convert the gases into hydrates, which are buoyant. As these hydrates travel upwards they will encounter regions of lower pressure and can decompose into free gas. The presence or absence of hydrates has a significant impact on the behaviour of the jet/plume due to the alteration of the buoyancy. The free gas may dissolve in water. This paper describes a computer model developed to simulate the behaviour of oil and gas released from deepwater locations in the ocean. The model integrates the hydrodynamics and thermodynamics of the jet/plume with kinetics and thermodynamics of hydrate formation/decomposition. Model formulation and comparison of results with laboratory data for hydrates is presented. Scenario simulations show the behaviour of oil/gas under different deepwater conditions.
当气体在深水中释放时，高压和低温会将气体转化为浮力较大的水合物。随着这些水合物向上移动，它们会遇到压力较低的区域，并可能分解为游离气体。由于浮力的改变，水合物的存在与否对射流/羽流的行为有重大影响。游离气体可能会溶解于水中。本文描述了一个开发用于模拟从海洋深水区释放的油气行为的计算机模型。该模型将射流/羽流的流体动力学和热力学与水合物形成/分解的动力学和热力学相结合。文中给出了模型公式以及与水合物实验室数据的结果比较。情景模拟展示了不同深水条件下油气的行为。
