Optimum Design of a Diffuser Pump for High Efficiency and Favorite Characteristics

扩散泵的优化设计，实现高效率和喜爱的特性

• 批准号: 14350095
• 负责人: TSUKAMOTO Hiroshi
• 金额: $ 10.24万
• 依托单位: KYUSHU INSTITUTE OF TECHNOLOGY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2002
• 资助国家: 日本
• 起止时间: 2002 至 2004
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-14350095/
• 关键词: Diffuser Pump; Unstable Characteristics; Optimum Design; Unsteady Flow; Rotor-Stator Interaction; Pressure Fluctuation; Correlation Dimension; Liapunov Exponent; 高効率; 目的関数; 最適化問題; 遺伝的アルゴリズム; 計算流体力学

Diffuser pump characteristics were measured to determine the objective functions for the optimum design of the pump. As the results of pressure measurements on bada-to-balde passage in vaned diffuser as well as casing wall of a diffuser pump, the effects of rotor-stator interaction on unsteady pressure was clarified. Unsteady hydraulic forces on pump impeller were measured, and predominant frequencies were found to be attributed by rotor-stator interaction. Chaotic analysis was done for entire flow range including unstable flow range, and Liapunov exponent as well as Liapunov dimension was found to be an objective functions of un favorite characteristics of pump. Numerical calculation was developed for cavitating pump characteristics, and calculated unsteady characteristics of cavitating pump agreed qualitatively with measured ones.Referring to the above results, Genetic Algorithm(GA) was applied to the optimum design of low solidity cascade for the vaned diffuser of a diffuser pump. The low solidity cascade optimized by GA showed better characteristics compared with original vaned diffuser.On the contrary, the following problems have not been solved :(1)Optimum design of diffuser pump for whole stage,(2)Multi objective optimum design.

测量扩散泵特性以确定泵优化设计的目标函数。通过对叶片扩压器中的巴达至叶片通道以及扩压器泵壳壁的压力测量结果，阐明了转子-定子相互作用对非定常压力的影响。测量了泵叶轮上的不稳定液压力，发现主要频率是由转子-定子相互作用造成的。对整个流量范围（包括不稳定流量范围）进行了混沌分析，发现李亚普诺夫指数和李亚普诺夫维数是不受欢迎的泵特性的目标函数。对空化泵的特性进行了数值计算，计算得到的空化泵的非定常特性与实测值定性一致。参考上述结果，将遗传算法（GA）应用于某扩压器叶片扩压器低稠度级联的优化设计泵。遗传算法优化的低稠度级联与原叶片扩压器相比表现出更好的特性，但没有解决以下问题：(1)全级扩压泵的优化设计；(2)多目标优化设计。

项目成果

秋山彰一: "ディフューザポンプ軸系に作用する流体力に関する研究"日本機械学会九州支部講演論文集. 038-1. 121-122 (2003)

Shoichi Akiyama：“作用于扩散器泵轴系统的流体力的研究”日本机械工程师学会九州分会论文集 038-122（2003）。

Experimental and Numerical Study of Unsteady Flow in a Diffuser Pump at Off-Design Conditions

• DOI: 10.1115/1.1603305
• 发表时间: 2003-09
• 期刊: Journal of Fluids Engineering-transactions of The Asme
• 影响因子: 2
• 作者: Hong Wang;H. Tsukamoto

ポンプ内キャビテーション流れの数値解析(第1報,モデルの検証とポンプ定常特性)

泵内空化流的数值分析（第一份报告、模型验证和泵稳态特性）

• 发表时间: 2004
• 期刊: 日本機械学会論文集 70・694
• 作者: 劉立軍

ポンプ内キャビテーション流れの数値解析(第2報,ポンプ非定常特性)

泵内空化流的数值分析（第二次报告，泵的非稳态特性）

• 发表时间: 2004
• 期刊: 日本機械学会論文集 70・699
• 作者: R.ZAIER;P.CHEN(陳山 鵬);N.ABE;T.TOYOTA;田中禎一
• 通讯作者: 田中禎一

THE STABILITY OF A NEW TYPE CENTRIFUGAL PUMP WITH SHAFT-LESS FLOATING IMPELLER

新型无轴浮动叶轮离心泵的稳定性

• 发表时间: 2004
• 期刊: Proceedings of the 22^<nd> IAHR Symposium on Hydraulic Machinery and Systems B12・3
• 作者: Mitsuo UNO