The Depression Produced by Impellers and the Similarity Problem

20th Innovative Manufacturing Engineering and Energy Conference

机械制造;能源学

Mandrea, Lucian^1 ; Bbuanu, Corina Alice^2 ; Oprina, Gabriela^2 ; Militaru, Gheorghe^1

Politehnica University of Bucharest, Str. Splaiul Independentei nr.313, Bucharest, Romania^1

National Research Institute for Electrical Engineering, Str. Splaiul Unirii nr.313, Bucharest, Romania^2

关键词: Analytical formulas;    Different sizes;    Operation cost;    Power industry;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/161/1/012076/pdf
DOI  :  10.1088/1757-899X/161/1/012076

来源: IOP

【 摘 要 】

The authors intend to apply original analytical formulas to estimate the depression produced by different types of impellers. The problem has been approached in different studies, especially by numerical simulations and not from the analytical point of view. The study is useful to estimate not only the magnitude of the depression, but also the dimensions of the depression zone. Unpleasant effects can be produced if cavitations appear, leading to propelling unit damage and consequently increasing the operation costs of different applications, such as power industry, chemical industry equipment or naval transport. The authors test impellers of different sizes in two experimental setups in order to characterize the phenomenon.