CFD-DEM的粗粒化用于改进的粘性接触模型中的出砂模拟
Coarse-graining of CFD-DEM for simulation of sand production in the modified cohesive contact model
摘要：
出砂对于疏松储层中的许多烃开采应用是重要的问题。该模型采用计算流体力学与离散元耦合方法（CFD-DEM），能够较好地反映泥沙输运问题的微观特征。在这项研究中，一个粗粒化的方法，三维CFD-DEM模型的出砂现象，使用样品的基础上的粒度分布（PSD）从哈萨克斯坦油藏领域。严格地推导了从精细模型到粗糙模型的缩放。原始（细尺度）模型进行了验证，包括出砂率的实验室结果。原始模型的结果进行了比较，SSW和SSP粗获得的模型。SSW模型的计算结果与原系统的出砂率计算结果一致。我们还观察到原始模型和粗糙模型之间的流体速度流线和产生的颗粒分布的良好匹配。在粗粒度模型的并行化中，粗模型的加速比达到9.4。
英文摘要：
Sand production is an important issue for many hydrocarbon recovery applications in unconsolidated reservoirs. The model using the Computational Fluid Dynamics coupled with Discrete Element Method (CFD-DEM) can capture micro-scale features of sand transport problems. In this study, a coarse-graining approach of 3D CFD-DEM model is developed for the sand production phenomenon using the sample based on the particle size distribution (PSD) from the Kazakhstan reservoir field. The derivation of scaling from a fine to a coarse model is presented rigorously. The original (fine scale) model is validated to the laboratory results including the sand production rate. The results of the original model is compared to the SSW and SSP coarse-gained models. The SSW model results agrees with the result of the sand production rate for the original system. We also observe a good match of the fluid velocity streamline and the produced particle distribution between the original and the coarse models. The speedup of the coarse model is up to 9.4 in the parallelized coarse-grained model.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
