关于井喷H2S扩散数值模拟初步研究

井喷发生时,在复杂地形和气象条件下,用普通方法很难精确计算出场的时空分布.CFD(Computational Fluid Dynamics)方法虽然理论上能够计算,但是受限于目前的数学基础以及计算机计算能力的限制,CFD方法还很难在大范围地域条件下得到推广和应用.本文的目标就是如何在这些条件下采用合理的假设改进CFD算法,计算出井喷发生后的场的时空分布.在算例中,本文计算维多辛斯基曲线喷嘴射流的流场分布,并与实验值比较.结果证明,所采用的模型和计算方法的计算结果与实际情况基本相符,模型和计算方法可以适用井喷的数值模拟.

Numerical Simulation Preview on Release Dispersion of the H2S Blowout

Under the condition of complex landform and weather , the time-space distribution of the H2S blowout is difficultly accurately computed by common technique. In theory , CFD (Computational Fluid Dynamics) can accurately compute it , but CFD is hardly spread and applied under the condition of large-scale landform, limited by the mathematics background and computer ability . The object in this paper is calculating the time-space distribution of the H2S blowout by the ameliorated arithmetic of CFD under those conditions on rational assumption. At the example , this article computed the flow distribution of nozzle. The result presents accord with the experiment data . So the model and the compute methods are considered suitable for numerical simulation of Blowout.