Measurement of two-phase natural circulation in a vertical annulus

Zhiee Jhia Ooi, Vineet Kumar, Caleb S. Brooks

Research output: Contribution to conferencePaper

Abstract

A new database of natural circulation in a vertical annulus is under development in the Multiphase Thermo-fluid Dynamics Laboratory (MTDL) at the University of Illinois at Urbana-Champaign. The focus of the dataset is on the two-phase phenomena of boiling, condensing, flashing, and saturated flow in a vertical channel under natural circulation. The 5.03 m annular test section with inner and outer diameter of 19.1 mm and 38.1 mm respectively houses a 3 m internally heated annular section followed by a 2.03 m unheated annular section. Five measurement ports, two in the heat section, one at the heated to unheated boundary, and two in the unheated section provide measurement of pressure and local measurements of void fraction, interfacial area concentration, gas velocity, Sauter mean diameter, and liquid temperature. Additional pressure and liquid temperature measurements are provided at important locations around the natural circulation loop. The dataset is designed for validation of one-dimensional system codes under natural circulation for pressures up to 1 MPa, which are important to passive cooling approaches to reactor safety.

Original languageEnglish (US)
Pages88-97
Number of pages10
StatePublished - Jan 1 2018
EventInternational Topical Meeting on Advances in Thermal Hydraulics 2018, ATH 2018 - Held in conjunction with the 2018 American Nuclear Society (ANS) Winter Meeting - Orlando, United States
Duration: Nov 11 2018Nov 15 2018

Other

OtherInternational Topical Meeting on Advances in Thermal Hydraulics 2018, ATH 2018 - Held in conjunction with the 2018 American Nuclear Society (ANS) Winter Meeting
CountryUnited States
CityOrlando
Period11/11/1811/15/18

Keywords

  • Annulus
  • Instability
  • Natural circulation
  • Steam-water flow

ASJC Scopus subject areas

  • Geotechnical Engineering and Engineering Geology
  • Nuclear Energy and Engineering
  • Nuclear and High Energy Physics

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  • Cite this

    Ooi, Z. J., Kumar, V., & Brooks, C. S. (2018). Measurement of two-phase natural circulation in a vertical annulus. 88-97. Paper presented at International Topical Meeting on Advances in Thermal Hydraulics 2018, ATH 2018 - Held in conjunction with the 2018 American Nuclear Society (ANS) Winter Meeting, Orlando, United States.