The change in pressure measurement according to the low pressure tap blockage rate of the Venturi flowmeter used in domestic nuclear power plants was approached numerically. Blockage rates were modeled dividing by 1/10dT to the downstream side of the low pressure tab to identify differential pressure changes. As a result, differential pressure increased in proportion to the blockage rate, and there was no change in differential pressure measurement at 10 to 40 percent with relatively small blockage rate, but the error rate of 50% to 0.3% or higher was shown.

• 김명훈(한국수력원자력 중앙연구원 기계연구소) | Myeong-Hun Kim 교신
• 최문호(한국수력원자력 중앙연구원 기계연구소) | Moon-Ho Choi
• 강승희(한국수력원자력 중앙연구원 기계연구소) | Seong-Hee Kang