The bubble drag force correlation plays an important role in the numerical simulation accuracy of gas/liquid flows. In order to systematically investigate the interphase drag force of non-buoyancy driven bubbly flows, a dynamic-positioning body force (DPBF) method is developed in this study. It is proved that this method has an enough computation precision. Using this method, a series of direct numerical simulation (DNS) cases of a single bubble with low-intermediate Re (1 ≤ Re ≤ 200) and a bubble swarm with low Re(5.6 ≤ Re ≤ 45) are carried out and the bubble drag coefficients are calculated. Based on all the DNS data, the drag correlations with dimensionless parameters (Re, We for a single bubble and Re, We, gas fraction for bubble swarm) are systematically investigated and reported in this paper, which can provide a reference to the development of drag force closure model for non-buoyancy driven bubbly flows.

气泡阻力的相关性在气/液流动的数值模拟精度中起着重要的作用。为了系统地研究非浮力驱动的气泡流的相间阻力，本研究开发了一种动态定位体力（DPBF）方法。实践证明，该方法具有足够的计算精度。使用这种方法，一个系列直接数值模拟（DNS）的具有低中间单个气泡的情况下，重新（1≤重新≤200）和具有低的气泡群重新（5.6≤重新≤45）进行，并且气泡计算阻力系数。根据所有DNS数据，具有无量纲参数（阻力，单个气泡的We，本文对Re，We，气泡群的气体分数进行了系统的研究和报道，可以为非浮力驱动的气泡流的阻力闭合模型的发展提供参考。