Proceedings of the KSME Conference (대한기계학회:학술대회논문집)

The Korean Society of Mechanical Engineers (대한기계학회)
권호 표지

Analysis of the micro diffuser/nozzle pump performance of steady states using similitude model and simulations

상사 모델과 전산 수치 해석을 이용한 diffuser/nozzle pump 의 정상 상태에 대한 연구

  • Park, Sung-Hoon (Department of Mechanical and Aerospace Engineering, Seoul National University) ;
  • Kauh, S.-Ken (Department of Mechanical and Aerospace Engineering, Seoul National University)
  • Published : 2007.05.30
Download PDF
⟨ Previous Next ⟩

Abstract

Recently, as the semiconductor production technology develops, there has been growing interest in the cooling system using micro fluid pump. Among the various types of micro fluid pump, the valve-less diffuser/nozzle has been extensively studied in recent years. However, the flat-walled diffuser/nozzle flow has not been clearly looked into due to its non-linear characteristics. In this paper, the flow characteristics of the flat-walled diffuser/nozzle have been analyzed using similitude model and simulations. Similitude models are designed so that the flow pattern is same as that of 1/10 scale flow by using high viscous fluid as working fluid. The results are compared to the simulations. It is shown that the flow characteristics of 2D simulation are different from 3D simulations at high Re region, and the measured pump efficiency is highly dependent on the pressure difference as well as the channel geometry. From these results, the desirable conditions for the efficient pump is discussed.

Keywords