STRESS ANALYSIS ON TURBINE BLADE FRANCIS USING FINITE ELEMENT METHOD

Simanjuntak, Manna Septriani and Suryadi, Eng Dedi and Chih, Chung-Hu (2021) STRESS ANALYSIS ON TURBINE BLADE FRANCIS USING FINITE ELEMENT METHOD. Undergraduated thesis, Universitas Bengkulu.

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Abstract

The turbine is an important part of a power plant, so it needs maintenance for energy supply. The "rotor-blade assembly" is one of the turbine parts. The moving fluid makes the blades rotate and generates energy to drive the rotors. The water turbine is used as a tool to convert the potential energy of water into electrical energy. This mechanical energy is then converted into electrical energy by a generator. In this paper, a model of the Francis turbine blade is made using the computer-aided design of Solidworks 2018 by choosing the material to be used in the form of ASTM A743 CA 6NM which is martensitic stainless steel commonly used in the energy industry - runner components - because of its superior toughness, yield, has good corrosion ability, and fatigue properties. Then the blade that has been designed will be analyzed using Ansys. The analysis performed on the blade is in the form of an equivalent (von Mises) stress analysis by varying the blade with several blade variations of 10, 12, 15, 17, and 19. The results of the analysis on the greatest stress were obtained in the variation of the number of blades 10, which was 43,008 Mpa, and analysis the smallest stress on the variation of the number of blades 19 is 32,696 MPa. So that the more number of blades will affect the value of the resulting voltage. Keywords: Blade Turbine Francis, ASTM A743 CA 6NM, Stress.

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