A Practice of Developing New Environment-friendly System by Composites

다국어 초록 (Multilingual Abstract)

This study intends to study about the blade performance loss occurred due to the variation in the shape of an airfoil from attachment/non-attachment of an erosion shield for the hovercraft. The model in this study has used NACA44XX-series, has designed NACA44XX-series by using the Auto CAD, and it designed the shape that has attached an erosionshield to this model according to the thickness and length. By using these models, a grid was generated by GAMBIT and the lift coefficient (Cl) and the drag coefficient (Cd) were calculated FLUENT code for flow analysis. Through this, theCl and Cd have calculated and compared the lift-to-drag ratio that an indicator of airfoil performance according to the shapeand attachment/non-attachment of erosion shield.

참고문헌 (Reference)

1 Young-wook Cho, "Flight Principle. in: FLUENT User Manuals" Cheung-yeon Publishing Company 54-59, 1995

2 Jang, C.S., "Computational Evaluation of an Airfoil with a Gurney Flap" 4071 : 1-19, 1992

3 Yoon-sik Kim, "Comparative Study on Numerical Analysis Methods on the 2D Ground Effect" 21 (21): 16-25, 2007

4 Jung-hwan Kim, "A Study on the 3D Flow Characteristics of Wells Turbine for Wave Power Conversion Using CFD" Pukyong National University 2000

5 Il-ryong Park, "A Study on Free Surface Effect of 2-D Airfoils" 9 (9): 75-82, 1995

6 Bum-suk Kim, "A Basic Study on Optimal Design of Turbine for Wind Power Generation (Ⅰ)" 230-234, 2001