Fuel pump of a vehicle is a device to supply the fuel from fuel tank to engine. This study analyzed the pulsatility on the shape of fuel supply pipe using a CFD(Computational Fluid Dynamics). Numerical analysis was performed to use 3-dimensional incompressible k-ε turbulent model with measured pressure values at an exit by an experiment. Simulation models used commercial and improved model. In this study, the characteristics of the pulsatility reduced in improved model compared to those in commercial model. The pressure loss, which occurs at the flexure, was effective to pulsatile reduction. Commercial and improved model differed by numbers of flexure. The number of flexure between inlet and outlet decreased the difference of velocity and pressure. Therefore, the design of fuel supply pipe should be considered numbers and shape of flexure.

Abstract
 1. 서론
 2. 해석 방법
  2.1 모델 형상 및 격자 생성
  2.2 수치해석 방법
 3. 해석 결과
 4. 결론
 References

• 김윤정((주)현담산업) | Yun Jung Kim
• 김창민((주)현담산업) | Chang Min Kim
• 김철수(강릉원주대학교 기계자동차공학부) | Chulsoo Kim
• 정우원(강원지역사업평가원 지역산업평가단) | Woowon Jeong Corresponding Author