中文摘要：

海洋石油工程中，拆除废弃平台和报废井口的方法主要有机械切割、炸药爆破和高速射流切割等。机械切割的效率较低，费用高；炸药爆破方法对周边的海洋环境造成不良影响，于是人们开始利用高压射流切割技术。为了加速高压射流切割技术在海洋石油工程中的应用，采用有限体积法，结合标准κ-ε湍流模型和雷诺应力模型对切割过程中所遇到的稳态、不可压缩的轴对称受限湍流冲击射流进行了数值模拟，并将计算结果同试验数据进行了对比。结果表明：预测结果同试验数据吻合良好，雷诺应力模型由于采用了湍流的各向异性假设爷件，在对时均流动参数的预测方面要优于采用湍流各向同性假设条件的标准κ-ε模型。

英文摘要：

In offshore petroleum engineering, mechanical culling, explosive dismantlement and water jet cuuing are the main methods of dismantling abandoned platform and wellhead. High pressure water jet was used considering the high cost and low efficiency of mechanical cutting, and detrimental effects of explosive dismantlement on sea environment. For the purpose of accelerating the use of high pressure watcr jet in offshore engineering, A finite volume approach combined with standard turbulence model and Reynolds stress model （RSM）, was used to simulate the steady incompressible turbulent flow of a confined impinging jet. The calculated results were compared with Doppler velocimetry （LDV） experimental data. The results indicate that the predicted data agree with the experiment data, and the RSM performs better than the standard model in capturing mean flow properties.