Reflood experiments in the REWET-II rod bundle facility including comparisons with computer calculations

Timo Kervinen; Anitta Hämäläinen; Jaakko Miettinen

Reflood experiments in the REWET-II rod bundle facility including comparisons with computer calculations

Timo Kervinen, Anitta Hämäläinen, Jaakko Miettinen

Research output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Scientific › peer-review

2 Citations (Scopus)

Abstract

A series of reflooding experiments has been carried out in the REWET-II facility. The primary objective of these tests was to study the effect of the combined upper plenum and downcomer coolant injection and to provide data for verification of computer codes. The experimental results indicate that upper plenum injection alone cools test rods slowly, a combined coolant injection to the upper plenum and the downcomer improves cooling significantly, and downcomer injection alone cools the test rod bundle best if the total coolant flow rate is the same in these three different cases. In all of these cases the lower plenum was full of coolant and the start of the experiment. Quenching time and clad temperature histories calculated with the computer codes NORCOOL-I and FLOOD4 are in reasonable quantitative agreement with experiments in the case of pure downcomer injection. Qualitative trends were reasonably predicted in other cases, too.

Original language	English
Title of host publication	Second International Topical Meeting on Nuclear Reactor Thermal-Hydraulics
Publisher	American Nuclear Society (ANS)
Pages	638-645
Publication status	Published - 1983
MoE publication type	A4 Article in a conference publication
Event	Second International Topical Meeting on Nuclear Reactor Thermal-Hydraulics - Santa Barbara, United States Duration: 11 Jan 1983 → 14 Jan 1983

Conference

Conference	Second International Topical Meeting on Nuclear Reactor Thermal-Hydraulics
Country/Territory	United States
City	Santa Barbara
Period	11/01/83 → 14/01/83

Keywords

experiments
code validation
thermal hydraulics

Cite this

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title = "Reflood experiments in the REWET-II rod bundle facility including comparisons with computer calculations",

abstract = "A series of reflooding experiments has been carried out in the REWET-II facility. The primary objective of these tests was to study the effect of the combined upper plenum and downcomer coolant injection and to provide data for verification of computer codes. The experimental results indicate that upper plenum injection alone cools test rods slowly, a combined coolant injection to the upper plenum and the downcomer improves cooling significantly, and downcomer injection alone cools the test rod bundle best if the total coolant flow rate is the same in these three different cases. In all of these cases the lower plenum was full of coolant and the start of the experiment. Quenching time and clad temperature histories calculated with the computer codes NORCOOL-I and FLOOD4 are in reasonable quantitative agreement with experiments in the case of pure downcomer injection. Qualitative trends were reasonably predicted in other cases, too.",

keywords = "experiments, code validation, thermal hydraulics",

author = "Timo Kervinen and Anitta H{\"a}m{\"a}l{\"a}inen and Jaakko Miettinen",

year = "1983",

language = "English",

pages = "638--645",

booktitle = "Second International Topical Meeting on Nuclear Reactor Thermal-Hydraulics",

publisher = "American Nuclear Society (ANS)",

address = "United States",

note = "Second International Topical Meeting on Nuclear Reactor Thermal-Hydraulics ; Conference date: 11-01-1983 Through 14-01-1983",

}

Kervinen, T, Hämäläinen, A & Miettinen, J 1983, Reflood experiments in the REWET-II rod bundle facility including comparisons with computer calculations. in Second International Topical Meeting on Nuclear Reactor Thermal-Hydraulics. American Nuclear Society (ANS), pp. 638-645, Second International Topical Meeting on Nuclear Reactor Thermal-Hydraulics, Santa Barbara, California, United States, 11/01/83.

Reflood experiments in the REWET-II rod bundle facility including comparisons with computer calculations. / Kervinen, Timo; Hämäläinen, Anitta; Miettinen, Jaakko.
Second International Topical Meeting on Nuclear Reactor Thermal-Hydraulics. American Nuclear Society (ANS), 1983. p. 638-645.

Research output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Scientific › peer-review

TY - GEN

T1 - Reflood experiments in the REWET-II rod bundle facility including comparisons with computer calculations

AU - Kervinen, Timo

AU - Hämäläinen, Anitta

AU - Miettinen, Jaakko

PY - 1983

Y1 - 1983

N2 - A series of reflooding experiments has been carried out in the REWET-II facility. The primary objective of these tests was to study the effect of the combined upper plenum and downcomer coolant injection and to provide data for verification of computer codes. The experimental results indicate that upper plenum injection alone cools test rods slowly, a combined coolant injection to the upper plenum and the downcomer improves cooling significantly, and downcomer injection alone cools the test rod bundle best if the total coolant flow rate is the same in these three different cases. In all of these cases the lower plenum was full of coolant and the start of the experiment. Quenching time and clad temperature histories calculated with the computer codes NORCOOL-I and FLOOD4 are in reasonable quantitative agreement with experiments in the case of pure downcomer injection. Qualitative trends were reasonably predicted in other cases, too.

AB - A series of reflooding experiments has been carried out in the REWET-II facility. The primary objective of these tests was to study the effect of the combined upper plenum and downcomer coolant injection and to provide data for verification of computer codes. The experimental results indicate that upper plenum injection alone cools test rods slowly, a combined coolant injection to the upper plenum and the downcomer improves cooling significantly, and downcomer injection alone cools the test rod bundle best if the total coolant flow rate is the same in these three different cases. In all of these cases the lower plenum was full of coolant and the start of the experiment. Quenching time and clad temperature histories calculated with the computer codes NORCOOL-I and FLOOD4 are in reasonable quantitative agreement with experiments in the case of pure downcomer injection. Qualitative trends were reasonably predicted in other cases, too.

KW - experiments

KW - code validation

KW - thermal hydraulics

M3 - Conference article in proceedings

SP - 638

EP - 645

BT - Second International Topical Meeting on Nuclear Reactor Thermal-Hydraulics

PB - American Nuclear Society (ANS)

T2 - Second International Topical Meeting on Nuclear Reactor Thermal-Hydraulics

Y2 - 11 January 1983 through 14 January 1983

ER -

Reflood experiments in the REWET-II rod bundle facility including comparisons with computer calculations

Abstract

Conference

Keywords

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