STUDY AND ANALYSIS OF THE CAVITATING AND NON-CAVITATING JETS PART TWO Parameters Controlling the Jet Action and a New Formula for Cavitation Number Calculation

被引：4

作者：

Hutli, Ezddin ^{[1
,2
,3
]}

Nedeljkovic, Milos S. ^{[4
]}

Czifrus, Szabolcs ^{[1
]}

机构：

[1] Budapest Univ Technol & Econ, Inst Nucl Tech, Budapest, Hungary

[2] Hungarian Acad Sci, Ctr Energy Res, Dept Thermohydraul, Budapest, Hungary

[3] Budapest Univ Technol & Econ, Fac Mech Engn, Energy Engn Dept, Budapest, Hungary

[4] Univ Belgrade, Fac Mech Engn, Belgrade, Serbia

来源：

THERMAL SCIENCE | 2020年 / 24卷 / 01期

关键词：

power; dynamic power; static power; kinetic energy; efficiency; erosion; cavitation intensity; SURFACE CHARACTERISTICS; EROSION CHARACTERISTICS; NOZZLE GEOMETRY; APPEARANCE; ROUGHNESS;

D O I：

10.2298/TSCI190428334H

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

This part of the paper presents the relation between the working conditions, nozzle geometry, nozzle diameter, and jet behavior. Experimental work has been made by impinging the submerged jets on the copper specimen as a target for a period of time. The mass loss and erosion rate at various conditions were measured, calculated and analyzed. For the visualization, a high-speed camera was used and the obtained data were processed to measure parameters which are used to characterize the clouds. Correlations among the jet dynamic power, the cavity length, erosion rate, and the pertinent experimental parameters are apparent. In addition, formulas are proposed to conveniently compare the efficiency of jetting systems based on working conditions. Based on the mathematical analyses of the obtained results a new form for cavitation number calculation is proposed.

引用

页码：407 / 419

页数：13