| 摘要: |
| 基于Realizable k-ε 紊流模型，通过商业软件FLUENT对不同流量比条件下，吸入管出口位置以及直径大小对环形射流泵效率及流场的影响进行模拟分析。结果表明，吸入管出口位置方面：流量比为0.4-0.6条件下出口位置应与吸入室收缩段入口保持较小距离，对于此研究模型下保持2mm为最优，流量比为0.1-0.3时适当增大与吸入室收缩段入口之间间距可提高效率；吸入管直径方面：其他参量不变条件下，效率与吸入管直径成正相关，随着直径不断变大，环形射流泵的最高效率也不断增大，且最高效率点所对应流量比也在不断变大。 |
| 关键词: 射流泵；数值模拟；吸入管；结构优化 |
| DOI： |
| 分类号:S277.9 |
| 基金项目:国家自然科学基金资助项目(51774115):河南理工大学动力工程及热物理学科基金资助项目(722403/020) |
|
| Numerical simulation of influence of outlet position and diameter of suction pipe on annular jet pump |
|
litongzhuo1, yangzhipeng2
|
|
1.School of Mechanical and Power Engineering，Henan Polytechnic University，;2.School of Mechanical and Power Engineering，Henan Polytechnic University
|
| Abstract: |
| Based on the Realizable k-ε turbulence model, the effects of outlet position and diameter of suction pipe on efficiency and flow field of annular jet pump with different flow ratios were simulated and analyzed by FLUENT. The results show that the outlet position of the suction pipe should keep a small distance from the inlet of the suction chamber when the flow ratio is 0.4-0.6. For this research model, 2mm is the optimal distance. When the flow ratio is 0.1-0.3, appropriately increasing the distance between the outlet and the inlet of the suction chamber can improve the efficiency. Suction pipe diameter: Under the condition that other parameters remain unchanged, the efficiency is positively correlated with the suction pipe diameter. With the increasing diameter, the maximum efficiency of the annular jet pump is also increasing, and the flow ratio corresponding to the maximum efficiency point is also increasing. |
| Key words: jet pump; numerical simulation; the suction pipe; structure optimization |
