[关键词]
[摘要]
采用Fluent软件中的Realizable k-ε湍流模型与多孔介质阶跃面对不同流量下全自动鱼雷网式过滤器的清水流场进行数值模拟。结果表明:数值计算中进、出口间水头损失同物理试验的吻合程度较高,选择的数学模型具有较高的准确性和可靠性。对比不同流量下的计算结果可知,流量不同时过滤器内速度分布规律相同,压强分布规律也相同,但流量越大,水头损失越大,滤网内外侧的速度差、压强差也就越大;过滤器内的速度和压强分布越不均匀,结构有待进一步优化。
[Key word]
[Abstract]
The water flow field in automatic screen filter with torpedo was numerically simulated at different flow rates via the porous jump model and Realizable k-ε model in FLUENT. The results showed that the calculated head loss was highly consistent with the test result. Thus, the mathematical model was highly accurate and reliable. The comparison among the calculation results at different flow rates showed that the velocity and pressure distribution patterns were the same at different flow rates within the filter. The greater the flow, the greater the head loss, and the greater the velocity and pressure difference between the inner and outer sides of the screen. The velocity and pressure distribution were not uniform in the filter. Therefore, the structure of the filter awaits further optimization.
[中图分类号]
[基金项目]
国家级大学生创新训练计划项目(201510758009);库尔勒市重点科技项目;新疆农业大学校前期资助课题(XJAU201401);乌鲁木齐市科学技术局项目(H141028030);复合应用型农林人才培养模式改革试点(农业水利工程)项目;新疆农业大学教研教改项目“农业水利工程专业卓越农林人才培养模式的改革”;新疆水利水电工程重点学科基金资助(xjslgczdxk20101202)。