BASIC STUDY OF COUPLED DAMAGE CAUSED BY SILT ABRASION AND CAVITATION EROSION - (EXPERIMENTS WITH SUBMERGED WATER JETS)

被引：17

作者：

SATO, J

USAMI, K

OKAMURA, T

机构：

[1] Hitachi Ltd, Hitachi

来源：

JSME INTERNATIONAL JOURNAL SERIES II-FLUIDS ENGINEERING HEAT TRANSFER POWER COMBUSTION THERMOPHYSICAL PROPERTIES | 1991年 / 34卷 / 03期

关键词：

FLUID MACHINERY; HYDRAULIC TURBINE; JET; WEAR; CAVITATION;

D O I：

10.1299/jsmeb1988.34.3_292

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

Damage due to the coupled action of cavitation erosion and silt abrasion, in which artificial silt (Al2O3) was included, was experimentally studied using submerged jets. The magnitudes of the acoustic emission energy, impact pressure and material damage rate caused by the cavitating jet impingement were greater than those caused by the noncavitating one. Good correlations between the above three erosion intensity parameters were also confirmed. The SEM photographs of damaged surfaces showed that the edge of the abrasion trace was partially broken into pieces by cavitation. The material surface was smoother and the abrasion pattern was changed compared to that of pure abrasion.

引用

页码：292 / 297

页数：6