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Title: Fiber optic distributed temperature sensor mapping of a jet-mixing flow field

Abstract

In this paper, we introduce the use of a Rayleigh backscatter-based distributed fiber optic sensor to map the temperature field in air flow for a thermal fatigue application. The experiment involves a pair of air jets at 22 and 70°C discharging from 136 mm hexagonal channels into a 1 × 1 × 1.7 m tank at atmospheric pressure. A 40 m-long, Φ155 µm fiber optic sensor was wound back and forth across the tank midplane to form 16 horizontal measurement sections with a vertical spacing of 51 mm. This configuration generated a 2D temperature map with 2800 data points over a 0.76 × 1.7 m plane. Fiber optic sensor readings were combined with PIV and infrared measurements to relate flow field characteristics to the thermal signature of the tank lid. The paper includes sensor stability data and notes issues encountered using the distributed temperature sensor in a flow field. In conclusion, sensors are sensitive to strain and humidity, and so accuracy relies upon strict control of both.

Authors:
 [1];  [1];  [2]
  1. Argonne National Lab. (ANL), Argonne, IL (United States)
  2. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE Office of Nuclear Energy (NE); USDOE Office of Science (SC)
OSTI Identifier:
1365402
Alternate Identifier(s):
OSTI ID: 1324126
Grant/Contract Number:  
AC05-00OR22725; AC02-06CH11357
Resource Type:
Journal Article: Published Article
Journal Name:
Experiments in Fluids
Additional Journal Information:
Journal Volume: 56; Journal Issue: 3; Journal ID: ISSN 0723-4864
Publisher:
Springer
Country of Publication:
United States
Language:
English
Subject:
47 OTHER INSTRUMENTATION; 42 ENGINEERING

Citation Formats

Lomperski, Stephen, Gerardi, Craig, and Pointer, William David. Fiber optic distributed temperature sensor mapping of a jet-mixing flow field. United States: N. p., 2015. Web. doi:10.1007/s00348-015-1918-6.
Lomperski, Stephen, Gerardi, Craig, & Pointer, William David. Fiber optic distributed temperature sensor mapping of a jet-mixing flow field. United States. doi:10.1007/s00348-015-1918-6.
Lomperski, Stephen, Gerardi, Craig, and Pointer, William David. Wed . "Fiber optic distributed temperature sensor mapping of a jet-mixing flow field". United States. doi:10.1007/s00348-015-1918-6.
@article{osti_1365402,
title = {Fiber optic distributed temperature sensor mapping of a jet-mixing flow field},
author = {Lomperski, Stephen and Gerardi, Craig and Pointer, William David},
abstractNote = {In this paper, we introduce the use of a Rayleigh backscatter-based distributed fiber optic sensor to map the temperature field in air flow for a thermal fatigue application. The experiment involves a pair of air jets at 22 and 70°C discharging from 136 mm hexagonal channels into a 1 × 1 × 1.7 m tank at atmospheric pressure. A 40 m-long, Φ155 µm fiber optic sensor was wound back and forth across the tank midplane to form 16 horizontal measurement sections with a vertical spacing of 51 mm. This configuration generated a 2D temperature map with 2800 data points over a 0.76 × 1.7 m plane. Fiber optic sensor readings were combined with PIV and infrared measurements to relate flow field characteristics to the thermal signature of the tank lid. The paper includes sensor stability data and notes issues encountered using the distributed temperature sensor in a flow field. In conclusion, sensors are sensitive to strain and humidity, and so accuracy relies upon strict control of both.},
doi = {10.1007/s00348-015-1918-6},
journal = {Experiments in Fluids},
number = 3,
volume = 56,
place = {United States},
year = {Wed Mar 04 00:00:00 EST 2015},
month = {Wed Mar 04 00:00:00 EST 2015}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record at 10.1007/s00348-015-1918-6

Citation Metrics:
Cited by: 6 works
Citation information provided by
Web of Science

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