FEA기법에 의한 마이크로급 축류식 프로펠러 수차의 성능해석

Abstract

Air pollution caused by combustion due to indiscriminate use of fossil fuels in today's society is becoming a big problem worldwide. The increase in greenhouse gas emissions has led to a rapid and steady rise in global temperature, and the warming problem caused by climate change can lead to a rise in seawater every year, which can lead to fatalities in many cities and countries.However, even if all greenhouse gas emissions are stopped immediately, global temperatures are expected to continue to rise in the future. For this reason, the value of new and renewable energy is becoming important, and as awareness increases, many support and research are being conducted in each country. Korea has an average annual precipitation of 1207.4mm, and in the case of Korea, where precipitation is abundant and 2/3 is composed of mountainous areas, there are many unused small-scale hydro resources in each region. The propeller aberration, which is the subject of this study, has the advantage of being suitable for low chickenpox and large volume flow rates, but also has the advantage that the pitch cannot be adjusted because the blade is fixed. For this reason, initial design and verification of it are important, and Finite Element Method (FEA) numerical analysis is used to reduce time and cost. It is intended to verify the stability of the aberration and analyze the performance characteristics through FEA.