PMID- 29997358
OWN - NLM
STAT- PubMed-not-MEDLINE
DCOM- 20180712
LR  - 20181114
IS  - 1424-8220 (Electronic)
IS  - 1424-8220 (Linking)
VI  - 18
IP  - 7
DP  - 2018 Jul 11
TI  - Capacitive Phase Shift Detection for Measuring Water Holdup in Horizontal 
      Oil(-)Water Two-Phase Flow.
LID - 10.3390/s18072234 [doi]
LID - 2234
AB  - In this paper, a phase shift detection system of flow impedance is designed based 
      on a concave capacitance sensor (CCS). The flow impedance of oil(-)water stratified 
      flow is investigated by establishing an equivalent circuit model and a finite 
      element model. The influence of exciting frequency and sensor geometric 
      parameters on the phase shift output of the CCS is studied to access an optimal 
      phase shift measurement system. An experiment of horizontal oil(-)water two-phase 
      flows was conducted during which four flow patterns are observed, i.e., 
      stratified flow (ST), stratified wavy flow (SW), dual continuous flow (DC), and 
      dispersed oil-in-water and water flow (DO/W&W). The phase shift responses of 
      the CCS to the water holdup variation are collected. The results indicate that 
      the phase shift response of the CCS presents satisfied sensitivity for ST and SW 
      flow patterns, which is consistent with the predictions of the equivalent circuit 
      model and the finite element model. Although the flow structures of DC and 
      DO/W&W flows are extremely nonuniform, the phase shift response of the CCS 
      still shows better linearity and sensitivity to the water holdup variation. In 
      general, the capacitive phase shift detection technology exhibits advantages for 
      water holdup measurement in horizontal oil(-)water two-phase flow with nonuniform 
      phase distributions and conductive water.
FAU - Zhang, Hongxin
AU  - Zhang H
AUID- ORCID: 0000-0002-2386-2864
AD  - School of Electrical and Information Engineering, Tianjin University, Tianjin 
      300072, China. zhxlixue@tju.edu.cn.
FAU - Zhai, Lusheng
AU  - Zhai L
AUID- ORCID: 0000-0002-5154-9883
AD  - School of Electrical and Information Engineering, Tianjin University, Tianjin 
      300072, China. lszhai@tju.edu.cn.
FAU - Yan, Cong
AU  - Yan C
AD  - School of Electrical and Information Engineering, Tianjin University, Tianjin 
      300072, China. tjyancong@tju.edu.cn.
FAU - Wang, Hongmei
AU  - Wang H
AD  - School of Electrical and Information Engineering, Tianjin University, Tianjin 
      300072, China. whm712@tju.edu.cn.
FAU - Jin, Ningde
AU  - Jin N
AD  - School of Electrical and Information Engineering, Tianjin University, Tianjin 
      300072, China. ndjin@tju.edu.cn.
LA  - eng
PT  - Journal Article
DEP - 20180711
PL  - Switzerland
TA  - Sensors (Basel)
JT  - Sensors (Basel, Switzerland)
JID - 101204366
PMC - PMC6069079
OTO - NOTNLM
OT  - capacitance sensor
OT  - oil-water two-phase flow
OT  - phase shift detection
OT  - water holdup
COIS- The authors declare no conflict of interest.
EDAT- 2018/07/13 06:00
MHDA- 2018/07/13 06:01
PMCR- 2018/07/01
CRDT- 2018/07/13 06:00
PHST- 2018/05/31 00:00 [received]
PHST- 2018/07/09 00:00 [revised]
PHST- 2018/07/09 00:00 [accepted]
PHST- 2018/07/13 06:00 [entrez]
PHST- 2018/07/13 06:00 [pubmed]
PHST- 2018/07/13 06:01 [medline]
PHST- 2018/07/01 00:00 [pmc-release]
AID - s18072234 [pii]
AID - sensors-18-02234 [pii]
AID - 10.3390/s18072234 [doi]
PST - epublish
SO  - Sensors (Basel). 2018 Jul 11;18(7):2234. doi: 10.3390/s18072234.