전산해석을 활용한 대용량 벤투리 유량계 압력 탭 하류 막힘률에 따른 유량측정 변화 연구
A Study on the Variation of Flow Measurements According to the Blockage Rate of the Flowmeter Pressure Tab at Down Stream in the Large-capacity Venturi by CFD
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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.
Abstract
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.
참고문헌 (4)
- Kavaklioglu, K., "Monitoring Feedwater Flow Rate and Component Thermal Performance of Pressurized Water Reactors by means of Artificial Neural Networks", ANP ‘92 Conference, 107(1) (1994)
- Pipe Flow Modeling for Ultrasonic Flow Measurement Instrumentation, "Ramesh Shankar", Electric Power Research Institute, Inc, ~, pp.EPRI TR- 107327
- Nuclear Feedwater Flow Measurement, "R. Shankar", Electric Power Research Institute, 2-1~2-7, pp.EPRI TR-112118
- Myeonghun Kim, "A Study on the Variation of Flow measurements according to the blockage rate of the Flowmeter pressure tab in the Venturi by Numerical analysis", pp.2017