SVIBOR - Project code: 2-08-050

MINISTRY OF SCIENCE AND TECHNOLOGY

Strossmayerov trg 4, HR - 10000 ZAGREB
tel.: +385 1 459 44 44, fax: +385 1 459 44 69
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Project code: 2-08-050

TWOPHASE FLOW AND EROSION IN TURBOMACHINERYS

Main researcher: STANIŠA, BRANKO (64343)

Assistants

IVUŠIĆ, VINKO (76223)
MRŠA, ZORAN (32573)
SOPTA, LUKA (74085)

Type of research: applied
Duration from: 01/02/91. to 12/24/95.

Papers on project (total): 11
Papers on project quoted in Current Contents: 5

Institution name: Tehnički fakultet, Rijeka (69)
Department/Institute: Department for power engineering
Address: Vukovarska 58,
City: 51000 - Rijeka, Croatia

Communication: Phone: 385(0)51332844; Fax: 385(0)51515403

Summary: The erosion developing in the compressors, gas and steam turbines through the action of two-phase flow of fluid reduces their efficienci, reliability and service life. Past results of the problem investigation have in some degree contributed to understandingof two phase flow of fluid in turbo-machines, and to establishing a mechanism and an approksimate model of the erosion proces. However, irrespective of the investigation results the erosion problemin the turbo machinescaused by two-phase flow of fluid has not been fully solved. This has been borne out by substantial erosion identified on the elements in turbo-mashines in service. In this paper a computer-supported mathematical model of two-phase flow of fluid in turbo-machines will be developed. On a pilot plant and turbo-machines in service the process and the mechanism of erosion through the action of particulate matters and water droplete impinging on the model surface will be studied. A mathematical model of the erosion process will be developed on the basis of theoretical and experimental investiga- tions determine the service life of the turbo-machine elements subject to erosive action of the two-phase flow of fluid.

Keywords: Flow,solid particles,water droplet,erosion,tyrbomachinery

Research goals: The goal of this study is: computer-supported, mathematical modelling of two-phase fluid flowing through the turbo-machines; finding the regularities, and mathematical modelling of the erosion process through the action of two-phase flow of fluid; obtaining the efficient methods for the erosion protection of turbo- machines. The contribution of the investigation results should be better understanding of a very complex problem of two- phase flow and erosion in turbo-machines, obtaining a mathematical model of two-phase flow and erosion process which would be widely applicable to finding the solutions for the erosion problems in turbo-machines, as well as to determining the service life and increasing the reliability of their elements. The results obtained will also make contribution to the theory of optimal design of a turbo-machine circulating part involving two-phase flow of fluid.

Other information about the project.


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Last update: 09/27/95
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