The Visualization of the Flow through Tube Banks in Various Arrangements

다양한 배열 상태에 놓인 관군을 지나는 흐름의 가시화

  • 노기덕 (경상대학교) ;
  • 공태희 (경상대학교 대학원 기계시스템공학과) ;
  • 제정기 (경상대학교 기계항공공학부) ;
  • 김성재 (경상대학교 기계항공공학부) ;
  • 김태경 (경상대학교 기계항공공학부)
  • Published : 2008.11.05

Abstract

The Visualizations of the flowfield through tube banks with in-line and staggered arrangements were investigated by PIV. Strouhal numbers, velocity vectors and velocity profiles around the cylinders with in-line and staggered arrangements were observed at the pitch ratio $P_t/D=2.0$ and Reynolds number of $Re=4.0{\times}10^3$. As the results The flow patterns through tube banks were almost a straight line in case of the in-line arrangement while it was almost 八 type in case of the staggered arrangement in the direction of the wake. The average velocity in the rear region of the tube banks with the staggered arrangement was far smaller than that with the in-line arrangement. The Strouhal number in the last rank was far smaller than that in the front ranks in both of the in-line and staggered arrangements. The wake of each cylinder changed with time and with the position of the cylinder.

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