Possibilities for Groundwater Flow Sensing with Fiber Bragg Grating Sensors

Sandra Drusová (Corresponding Author), Wiecher Bakx, Adam D. Wexler, Herman L. Offerhaus

Research output: Contribution to journalArticleAcademicpeer-review

1 Citation (Scopus)
67 Downloads (Pure)

Abstract

An understanding of groundwater flow near drinking water extraction wells is crucial when it comes to avoiding well clogging and pollution. A promising new approach to groundwater flow monitoring is the deployment of a network of optical fibers with fiber Bragg grating (FBG) sensors. In preparation for a field experiment, a laboratory scale aquifer was constructed to investigate the feasibility of FBG sensors for this application. Multiparameter FBG sensors were able to detect changes in temperature, pressure, and fiber shape with sensitivities influenced by the packaging. The first results showed that, in a simulated environment with a flow velocity of 2.9 m/d, FBG strain effects were more pronounced than initially expected. FBG sensors of a pressure-induced strain implemented in a spatial array could form a multiplexed sensor for the groundwater flow direction and magnitude. Within the scope of this research, key technical specifications of FBG interrogators for groundwater flow sensing were also identified.
Original languageEnglish
Article number1730
JournalSensors (Switserland)
Volume19
Issue number7
DOIs
Publication statusPublished - 11 Apr 2019

Fingerprint

Groundwater flow
Groundwater
Fiber Bragg gratings
ground water
Bragg gratings
fibers
sensors
Sensors
Optical Fibers
Pressure
Product Packaging
Drinking Water
plugging
drinking
Aquifers
aquifers
Flow velocity
Potable water
pollution
Optical fibers

Keywords

  • Aquifer simulator
  • FBG interrogators
  • Fiber Bragg grating
  • Multiplexed temperature sensing
  • Thermal tracer

Cite this

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title = "Possibilities for Groundwater Flow Sensing with Fiber Bragg Grating Sensors",
abstract = "An understanding of groundwater flow near drinking water extraction wells is crucial when it comes to avoiding well clogging and pollution. A promising new approach to groundwater flow monitoring is the deployment of a network of optical fibers with fiber Bragg grating (FBG) sensors. In preparation for a field experiment, a laboratory scale aquifer was constructed to investigate the feasibility of FBG sensors for this application. Multiparameter FBG sensors were able to detect changes in temperature, pressure, and fiber shape with sensitivities influenced by the packaging. The first results showed that, in a simulated environment with a flow velocity of 2.9 m/d, FBG strain effects were more pronounced than initially expected. FBG sensors of a pressure-induced strain implemented in a spatial array could form a multiplexed sensor for the groundwater flow direction and magnitude. Within the scope of this research, key technical specifications of FBG interrogators for groundwater flow sensing were also identified.",
keywords = "Aquifer simulator, FBG interrogators, Fiber Bragg grating, Multiplexed temperature sensing, Thermal tracer",
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Possibilities for Groundwater Flow Sensing with Fiber Bragg Grating Sensors. / Drusová, Sandra (Corresponding Author); Bakx, Wiecher; Wexler, Adam D.; Offerhaus, Herman L.

In: Sensors (Switserland), Vol. 19, No. 7, 1730, 11.04.2019.

Research output: Contribution to journalArticleAcademicpeer-review

TY - JOUR

T1 - Possibilities for Groundwater Flow Sensing with Fiber Bragg Grating Sensors

AU - Drusová, Sandra

AU - Bakx, Wiecher

AU - Wexler, Adam D.

AU - Offerhaus, Herman L.

PY - 2019/4/11

Y1 - 2019/4/11

N2 - An understanding of groundwater flow near drinking water extraction wells is crucial when it comes to avoiding well clogging and pollution. A promising new approach to groundwater flow monitoring is the deployment of a network of optical fibers with fiber Bragg grating (FBG) sensors. In preparation for a field experiment, a laboratory scale aquifer was constructed to investigate the feasibility of FBG sensors for this application. Multiparameter FBG sensors were able to detect changes in temperature, pressure, and fiber shape with sensitivities influenced by the packaging. The first results showed that, in a simulated environment with a flow velocity of 2.9 m/d, FBG strain effects were more pronounced than initially expected. FBG sensors of a pressure-induced strain implemented in a spatial array could form a multiplexed sensor for the groundwater flow direction and magnitude. Within the scope of this research, key technical specifications of FBG interrogators for groundwater flow sensing were also identified.

AB - An understanding of groundwater flow near drinking water extraction wells is crucial when it comes to avoiding well clogging and pollution. A promising new approach to groundwater flow monitoring is the deployment of a network of optical fibers with fiber Bragg grating (FBG) sensors. In preparation for a field experiment, a laboratory scale aquifer was constructed to investigate the feasibility of FBG sensors for this application. Multiparameter FBG sensors were able to detect changes in temperature, pressure, and fiber shape with sensitivities influenced by the packaging. The first results showed that, in a simulated environment with a flow velocity of 2.9 m/d, FBG strain effects were more pronounced than initially expected. FBG sensors of a pressure-induced strain implemented in a spatial array could form a multiplexed sensor for the groundwater flow direction and magnitude. Within the scope of this research, key technical specifications of FBG interrogators for groundwater flow sensing were also identified.

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