Numerical simulation of semi-confined slot turbulent impinging jet using different turbulence models

In order to meet the need of abandoned platform cutting technology used in offshore petroleum engineering, different turbulence models including the standard k-ε model, RNG k-ε model, Realizable k-ε model and Reynolds stress model were used to simulate the semi-confined slot turbulent impinging jet. In order to reduce the influence of numerical diffusion on the computational results, measures such as decreasing the mesh size and increasing the precision of difference scheme were used. The results show that the Reynolds stress model and the Realizable k-ε turbulence model perform better than other two models. Decreasing the mesh size does not reduce the effect of numerical viscosity on computational results, and increasing the precision of difference scheme can reduce the effect of numerical viscosity on computational results at certain degree. And the Realizable k-ε turbulence model in conjunction with MUSCL scheme shows a little better performance than other models.