Abstract Cavitation is a phenomenon that occurs easily during rotation of fluid machinery and can decrease the performance pump, thereby resulting in damage to flow passage components. To study influence wall roughness on cavitation centrifugal three-dimensional model internal field pump was constructed numerical simulation conducted with ANSYS CFX software based Reynolds normalization group k ...

The Hydraulic Institute has just completed the task of developing a new ANSI/HI standard on Rotodynamic (Centrifugal) Slurry Pumps covering nomenclature, definitions, applications, and operation. The standard provides examples of all the different types of pumps available and has an extensive section on definitions. Slurries and their effect on performance and wear are covered. A slurry service...

Pumps are fluid machines whose uses very broad and important, ranging from industry to household needs. Selection of pump performance characteristics is important must be adjusted the needs which include: discharge, head, power, rotation. The obtained through testing. In connection with importance information about characteristics, this research activity efforts will made test centrifugal pumps...

The increased use of the centrifugal pump during coronary artery bypass surgery has been based primarily on theoretical data related to patient safety. There is minimal evidence suggesting improved outcome when compared to the traditional roller pump technology. We prospectively randomized 200 patients undergoing elective coronary artery bypass grafting into centrifugal pump (100 patients) and ...

This paper opens a new page in the theory of electric-centrifugal pump control and oil production. Emerging ideas give us opportunity to predict state centrifugal during operation, facilitate approach centrifugal-pump selection procedure, provide scientific explanation separation process, explore scaling processes pumps, develop salt-deposition prediction methods bring closer basis for automati...

The purpose of this study is to measure and compare the hemolysis produced by roller pumps with varied occlusion settings and a centrifugal pump. The null hypothesis is that there is no difference in the Index of Hemolysis (IH = gm Hb/100 L pumped) produced by a roller pump (RP) at four different occlusion settings and a centrifugal pump (CP) at the same blood flow rate (4.5 L/min) and afterloa...

Low specific speed centrifugal pumps have low flow rates and high heads. They are widely applied in the petroleum, chemical, aerospace, pharmaceuticals, metallurgy, and light industries, among others. With the development of space technology and petrol chemical industry, the highly stable cavitation performance of centrifugal pumps has been put forward. Poor cavitation performance is one of the...