水力压裂技术的发展具有很大的潜力，但是由于受到冲刷腐蚀的影响，压裂技术受到了限制。运用计算流体力学的方法，根据流体流动的规律，建立了节流器的流固两相冲刷腐蚀的数学模型，采用SIMPLE算法来解上述方程。结果表明，节流器的冲刷腐蚀主要发生在入口段和出口段，且入口段受到的冲刷腐蚀较严重。冲刷腐蚀对节流器的影响随人口压力和压裂液粘度的增大而变严重，随含砂量的变大而减轻。研究结果可为节流器的优化设计提供指导。
Hydraulic fracturing technique has great potential. Fracturing technology is limited because of the effect of erosion-corrosion. Using computational fluid hydrodynamics method, the mathematical model of liquid-solid for erosion-corrosion was established~based on laws of fluid flow. SIMPLE algorithm was used to solve the equation. The results show that erosion-corrosion of choke mainly occurred in the inlet and outlet sections. Erosion-corrosion of inlet section was more serious. The effect of erosion-corrosion increased with the increase of inlet pressure and viscosity of fracturing fluid. The results can provide guidance to the optimum design of choke.
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