The Use of Flow-Induced Vibration as An Alternative Resource of New Power Plant in Indonesia

Abstract

Considering the current energy crisis in Indonesia which is indicated by the depletion of oil reserve, the government believes that the existing power plants are not adequate to meet the electricity needs of this country. This can be seen clearly with the blackouts in many places in Indonesia. There are two economical methods to generate electricity on a large scale. First is by using hydropower and second is by using heat power. However, this cannot meet the needs of electricity in this country because of the difference in natural conditions in some places in Indonesia. Fluid flow and structure is an interactive system and its interaction is dynamic. This is a coupling system of forces to work on the structure generated by the surrounding fluid. The force of the fluid causes the structure to deform. When the structure is deformed, this means that its orientation to the fluid flow changes, so that, subsequently, the fluid force may change. This condition is called vibration phenomenon caused by flow. This experiment was conducted in Engineering Laboratory of Mercu Buana University Jakarta in 2017. The instrument of this study was the Wind Tunnel. This research aims to find out the flow-induced vibration that was affected by two parameters (flow velocity, the diameter of the kinematic fluid viscosity). These two parameters will get lift force and lift force, thus causing the generator to spin to generate electricity. The result of this research shows that the fluid flow has lift and drag force. The best result was obtained by specimen B velocity of 4.76. It also gave lift displacement of 20 mm. The success of the test depends on the election of spiral spring.