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雾化气体淬火时试件外表面所受的压力是计算其应力场的重要边界条件,也是影响试件淬火后变形和开裂的因素之一。本文应用计算流体动力学CFD的方法建立雾化气体淬火的三维非稳态模型。基于边界条件实验结果,对工件在不同进口速度工况下淬火过程中的压力场和试件的压力边界进行了数值模拟,并将试件上表面的压力模拟结果与边界条件实验结果进行了对比分析。结果表明,试件外表面的压力数值模拟计算与实验结果较吻合。
When the atomizing gas is quenched, the pressure on the outer surface of the specimen is an important boundary condition for calculating the stress field and also one of the factors that affect the deformation and cracking of the specimen after quenching. In this paper, a three-dimensional unsteady model of atomizing gas quenching is established by computational fluid dynamics (CFD) method. Based on the experimental results of the boundary conditions, the pressure field and the pressure boundary of the specimen during quenching under different inlet speed conditions were numerically simulated, and the simulation results of the pressure on the upper surface of the specimen were compared with the experimental results of the boundary conditions analysis. The results show that the numerical simulation of the outer surface of the specimen is in good agreement with the experimental results.