@inproceedings{3f07024d94094c7499b43cca17b9eb9c,
title = "Experiments on the effects of a spacer grid in air-water two-phase flow",
abstract = "Understanding the effects of spacer grids on the coolant flow through a nuclear reactor core is required for best-estimate design and analysis of the plant. The impact of a spacer grid on twophase flows is of particular importance because the geometric effects of the grid can alter the two-phase flow structure and consequently, the mass, momentum, and energy transfer characteristics. Therefore, a scaled separate-effects test facility is constructed to investigate the effects of a spacer grid on the hydrodynamics of air-water two-phase flow through a rod bundle. The test facility is scaled to maintain hydrodynamic and geometric similarity to single- and twophase flows in a conventional pressurized water reactor and to facilitate detailed local measurements of two-phase flow parameters around the simulant fuel rods with a four-sensor conductivity probe. This paper presents measurements of local time-averaged two-phase flow parameters acquired upstream and downstream of the spacer grid with the conductivity probe in a representative subchannel of a 1×3 rod bundle for eight flow conditions. Characteristic features of the development of the two-phase flow parameters along the test section are discussed.",
author = "J. Wheeler and T. Worosz and Seungjin Kim",
year = "2014",
month = jan,
day = "1",
language = "English (US)",
series = "Embedded Topical Meeting on Advances in Thermal Hydraulics, ATH 2014, Held at the American Nuclear Society 2014 Annual Meeting",
publisher = "American Nuclear Society",
pages = "289--301",
booktitle = "Embedded Topical Meeting on Advances in Thermal Hydraulics, ATH 2014, Held at the American Nuclear Society 2014 Annual Meeting",
address = "United States",
note = "Embedded Topical Meeting on Advances in Thermal Hydraulics, ATH 2014, Held at the American Nuclear Society 2014 Annual Meeting ; Conference date: 15-06-2014 Through 19-06-2014",
}