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利用流体力学数值计算软件FLUENT,基于混合物模型对气-液两相流体绕等间距排列圆管流动进行数值模拟,得到不同工况中心圆柱的升阻力时程和整个计算域的流动特性。通过计算发现,对于气-液两相流绕等间距排列圆管流动而言,中心圆柱的升阻力均方值、极值和旋涡脱落频率均随着雷诺数增大而增大。并通过实验对模拟结果进行比较,验证了模拟结果的合理性。
Based on the mixture model, the numerical simulation of the circular flow of gas-liquid two-phase fluid with equal spacing is carried out by using the fluid dynamics numerical calculation software FLUENT. The flow characteristics of the lift resistance time series and the whole calculation domain of the central cylinder under different working conditions are obtained. The calculation results show that the mean square value, extreme value and vortex shedding frequency of central cylinder increase with the increase of Reynolds number for the circular flow of gas-liquid two-phase flow at equal intervals. The simulation results are compared through experiments to verify the rationality of the simulation results.