基于Fluent的充填料浆管道输送阻力模拟

 为了解高浓度浆体的流动特性, 结合流体动力学的理论和充填浆体的特点, 对充填浆体在不离析的条件下做流体质点、均质性和连续性的假设, 建立充填浆体管道输送的数学模型。结合某矿山工业试验的结果, 运用Fluent 软件对浆体管道输送进行了阻力数值模拟, 通过模拟与实测结果的对比可看出, 两者误差在5%左右, 得出了浆体流速与沿程阻力损失之间的关系方程, 进而运用此模型计算得到该浆体管输自流的速度区间1.82～2.23 m/s。利用数值模拟结果可以为充填系统管路的设计提供依据, 也可用来指导矿山的实际生产, 具有很好的实用价值和推广意义。

Computer simulation of filling slurry pipeline transportation using Fluent

In order to understand the flow characteristics of high concentration slurry, a mathematical model of filling slurry pipeline transportation is established by combining the fluid dynamics theory and the characteristics of the filling slurry under the assumption including fluid particle, uniformity and continuity in the case of no segregation. According to the result of a certain mine industrial test, a numerical simulation on the resistance of slurry pipeline transportation was made by the Fluent software. Through the comparison of simulation and measured results, the error was found to be around 5%. At the same time, the relationship between the slurry flow rate and loss of resistance along the way was obtained. The drift velocity range of slurry pipeline was calculated to be around 1.82~2.23 m/s by the above relationship and mathematical model. The numerical simulation results could provide a basis for the filling system piping design. Besides, they could be used to guide the actual mine production.