A simple use of Venturi might be used to measure two-phase flow rate within relatively low GVF(gas volume fraction). Upstream flow entering Venturi can be improved with installed flow homogenizer which is easily fabricated by 3-dimensional printer with multiple holes. Simultaneous measurement between high-speed flow visualization and dynamic differential pressure measurement was made to find visual criteria for two-phase flow rate measurement with different GVF ranged from 0% to 30%. It was observed that the two-phase flow rate can be reliably measured up to 15% of GVF using flow homogenizer. FFT(Fast-Fourier Transform) results proved that the long flow homogenizers (type 2 and 4) showed a lower amplitude of differential pressure (Δp) than the short flow homogenizers (type 1 and 3) respectively. So the optimized flow homogenizer can be useful to measure two-phase flow rate at low GVF.
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Visual Criteria for Measuring Two-phase Flow Rate in Venturi with Flow Homogenizer
Sangho Sohn,
Sangho Sohn
Department of Extreme Thermal Systems,
sangho@kimm.re.kr
Korea Institute of Machinery and Materials
, Daejon,305-343
, Korea
sangho@kimm.re.kr
Search for other works by this author on:
Jaebum Park,
Jaebum Park
Department of Extreme Thermal Systems,
johnpaulpark@kimm.re.kr
Korea Institute of Machinery and Materials
, Daejon,305-343
, Korea
johnpaulpark@kimm.re.kr
Search for other works by this author on:
Dong-Wook Oh
Dong-Wook Oh
Search for other works by this author on:
Sangho Sohn
Department of Extreme Thermal Systems,
sangho@kimm.re.kr
Korea Institute of Machinery and Materials
, Daejon,305-343
, Korea
sangho@kimm.re.kr
Jaebum Park
Department of Extreme Thermal Systems,
johnpaulpark@kimm.re.kr
Korea Institute of Machinery and Materials
, Daejon,305-343
, Korea
johnpaulpark@kimm.re.kr
Dong-Wook Oh
Corresponding author.
J. Heat Transfer. Aug 2015, 137(8): 080911
Published Online: August 1, 2015
Article history
Received:
March 30, 2015
Revised:
April 3, 2015
Online:
June 1, 2015
Citation
Sohn, S., Park, J., and Oh, D. (August 1, 2015). "Visual Criteria for Measuring Two-phase Flow Rate in Venturi with Flow Homogenizer." ASME. J. Heat Transfer. August 2015; 137(8): 080911. https://doi.org/10.1115/1.4030475
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