The lattice Boltzmann method (LBM) is applied to study the behavior of liquid droplet inside a PEMFC gas channel. To validate the fluid-fluid interaction model, the relationship between the pressure jump across the interface and the bubble radius is investigated for a static bubble to confirm the Laplace’s law. To evaluate the fluid-solid interaction model, static contact angle is calculated by changing the interaction parameter. Also, a constant gravitational force is applied to study the temporal evolution of liquid droplet placed on the bottom wall in a three dimensional periodic channel.

Abstract
 1. 서 론
 2. 연구내용 및 방법
  2.1 D3Q19 LBM 지배방정식과 차분식
  2.2 초기조건
 3. 결과 및 토의
  3.1 Laplace’s law 검증
  3.2 Static contact angle 검증
  3.3 액적 거동 결과
 4. 결 론
 References

• 고영진(Kongju National University, Department of Mechanical Engineering) | Young-Jin Ko
• 김진현(Kongju National University, Department of Mechanical Engineering) | Jin-Hyun Kim
• 김우태(Kongju National University, Department of Mechanical & Automotive Engineering) | Woo-Tae Kim Corresponding Author