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클린 디젤엔진용 워터펌프 유동해석

Flow Analysis of Water Pump for Clean Disel Engine Application

  • 이동주 (한국교통대학교 에너지시스템공학과) ;
  • 김태영 (한국교통대학교 에너지시스템공학과) ;
  • 전문수 (한국교통대학교 에너지시스템공학과)
  • Lee, Dongju (Dept. of Energy System Eng., Korea Nat'l Univ. of Transportation) ;
  • Kim, Taeyoung (Dept. of Energy System Eng., Korea Nat'l Univ. of Transportation) ;
  • Chon, Mun Soo (Dept. of Energy System Eng., Korea Nat'l Univ. of Transportation)
  • 투고 : 2014.11.07
  • 심사 : 2014.11.24
  • 발행 : 2014.11.30

초록

Pressure distribution around rotating impeller blades in centrifugal pump has been main issue for design of efficient and high performance automotive water pump. In addition, pressure losses of inlet water pipes should be considered to reduce additional pressure drop and design high performance engine cooling system. In this paper, pressure distribution inside water pump and pressure drop between inlet and outlet of water pump are investigated numerically to design plastic water pump for clean diesel engine application. And the inlet geometry of water pump was considered to analysis the effect of inlet water pipe geometry on pressure distribution around impeller blades and outlet pressure. The prediction results are compared with experimental data to validate and determine optimal operation condition without water pump cavitation. Major design parameters such as blade angle, volute geometry, system pressure, and coolant flow rate are considered to confirm applying possibility of plastic blades to the clean diesel engine.

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