Influence of the Volute Tongue Shape on Cavitation Performance in Aviation Fuel Centrifugal Pump

4区工程技术 Q3 Physics and Astronomy

Scanning Pub Date : 2023-02-22 DOI:10.1155/2023/7189771

Siwei Zhao, Yiming Li, Ling Zhang, K. Wang, Guangzhao Luo

{"title":"Influence of the Volute Tongue Shape on Cavitation Performance in Aviation Fuel Centrifugal Pump","authors":"Siwei Zhao, Yiming Li, Ling Zhang, K. Wang, Guangzhao Luo","doi":"10.1155/2023/7189771","DOIUrl":null,"url":null,"abstract":"During the operation of an aviation fuel centrifugal pump, the performance of the pump dropped sharply due to cavitation, which caused cavitation damage near the volute tongue, which seriously threatened the safe and stable operation of the aircraft. According to the characteristics that the cavitation in the volute tongue region occurs in large flow rate, the volute tongue shape of aviation fuel centrifugal pump was improved in this paper, and the influence of the volute tongue shape on the cavitation characteristics of aviation fuel centrifugal pump at 1.2 times of design flow rate was studied. The research shows that under 1.2 times of design flow rate, the critical cavitation number of the improved volute tongue shape is reduced by 7.4% compared with the original scheme. The improved volute tongue effectively suppresses the generation of cavitation in the volute tongue region. The vortex core distribution area is reduced compared to the original scheme. When the cavitation number is low, doubling the axial passing frequency on the pressure pulsation spectrum at the monitoring point of the volute tongue is obviously weakened.","PeriodicalId":21633,"journal":{"name":"Scanning","volume":"1 1","pages":""},"PeriodicalIF":0.0000,"publicationDate":"2023-02-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Scanning","FirstCategoryId":"5","ListUrlMain":"https://doi.org/10.1155/2023/7189771","RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"Physics and Astronomy","Score":null,"Total":0}

引用次数: 0

Abstract

During the operation of an aviation fuel centrifugal pump, the performance of the pump dropped sharply due to cavitation, which caused cavitation damage near the volute tongue, which seriously threatened the safe and stable operation of the aircraft. According to the characteristics that the cavitation in the volute tongue region occurs in large flow rate, the volute tongue shape of aviation fuel centrifugal pump was improved in this paper, and the influence of the volute tongue shape on the cavitation characteristics of aviation fuel centrifugal pump at 1.2 times of design flow rate was studied. The research shows that under 1.2 times of design flow rate, the critical cavitation number of the improved volute tongue shape is reduced by 7.4% compared with the original scheme. The improved volute tongue effectively suppresses the generation of cavitation in the volute tongue region. The vortex core distribution area is reduced compared to the original scheme. When the cavitation number is low, doubling the axial passing frequency on the pressure pulsation spectrum at the monitoring point of the volute tongue is obviously weakened.

查看原文本刊更多论文

航空燃油离心泵蜗壳舌形对空化性能的影响

某型航空燃油离心泵在运行过程中，由于空化导致泵性能急剧下降，在蜗壳隔舌附近造成空化损伤，严重威胁到飞机的安全稳定运行。根据大流量时蜗壳隔舌区发生空化的特点，本文对航空燃油离心泵的蜗壳隔舌形状进行了改进，研究了在1.2倍设计流量时蜗壳隔舌形状对航空燃油离心泵空化特性的影响。研究表明，在1.2倍设计流量下，改进蜗壳舌形的临界空化数比原方案降低了7.4%。改进的蜗壳舌有效地抑制了蜗壳舌区空化的产生。与原方案相比，涡核分布面积减小。当空化数较低时，蜗壳隔舌监测点压力脉动谱上轴向通过频率加倍明显减弱。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Scanning 工程技术-显微镜技术

CiteScore

4.40

自引率

0.00%

发文量

111

审稿时长

6-12 weeks

期刊介绍： Scanning provides an international and interdisciplinary medium for the rapid exchange of information among all scientists interested in scanning electron, scanning probe, and scanning optical microscopies. Areas of specific interest include all aspects of the instrumentation associated with scanning microscopies, correlative microscopy techniques, stereometry, stereology, analytic techniques, and novel applications of the microscopies.