Article
Licensed
Unlicensed Requires Authentication

Thermal-hydraulic assessment of topaz irradiation processes at the ETRR-2 research reactor

Published/Copyright: May 6, 2013
Become an author with De Gruyter Brill

Abstract

The present work is carried out in order to evaluate the cooling process of irradiated topaz at the Egyptian Second Research Reactor (ETRR-2). A mathematical model is developed to simulate the cooling process of a part of the irradiation grid containing one topaz irradiation box. The coolant flow rate distribution through the model channels is estimated taken into consideration the buoyancy effect in each channel. The coolant temperature distributions along the model channels are predicted as well. The COSMOS/M finite element code is used to estimate the temperature distribution through one irradiated topaz stone. The predicted coolant and surface temperature values show the efficient cooling of topaz stones irradiated at the ETRR-2 research reactor.

Kurzfassung

Ziel der vorliegenden Arbeit ist die Untersuchung der Kühlungsprozesse der am ägyptischen Forschungsreaktor ETRR-2 bestrahlten Topase. Es wurde ein mathematisches Modell entwickelt zur Simulation der Kühlungsprozesse für die Bereiche des Bestrahlungsgitters mit einem Topas-Bestrahlungsbehälter. Die Verteilung des Durchsatzes in den modellierten Kanälen wird unter Berücksichtigung des Auftriebeffekts in jedem Kanal ermittelt. Mit dem FEM-Code COSMOS/M wird die Temperaturverteilung in einem bestrahlten Topas bestimmt. Die berechneten Temperaturwerte des Kühlmittels und der Oberfläche zeigen die Wirksamkeit der Kühlung der im ETRR-2-Forschungsreaktor bestrahlten Topase.

References

1 Buscaglia, G.: Thermal-Hydraulic Analysis of a Beryllium Reflector Configuration. ETRR-2 Doc. No. 0767-0300-3TATH-371-1A, 1st March 2002.Search in Google Scholar

2 Gamal, M.; Amin, E.: Heat Deposition in Topaz. Internal Report, ETRR-2, 23May2004.Search in Google Scholar

3 White, F. M.: Viscous Fluid Flow. 1974 by McGraw-Hill, Inc.Search in Google Scholar

4 Ergun, S.: Flow Through Packed columns. Chemical Engineering Prog.48 (1952) 8994.Search in Google Scholar

5 Dittus, F. W.; Boelter, L. M. K.: University of California, Berkeley, Publications on Engineering2 (1930) 443.Search in Google Scholar

6 Sieder, E. N.; Tate, G. E.: Ind. Eng. Chem.28 (1936) 1429.10.1021/ie50324a027Search in Google Scholar

7 Kramers, H.: Heat Transfer from Spheres to Flowing Media. Physica12 (1946) 61.10.1016/S0031-8914(46)80024-7Search in Google Scholar

8 COSMOS/M Version 2.6, Structural Research and Analysis Corporation, Los Angeles, California, September2000.Search in Google Scholar

9 Touloukian, Y. S.; Powell, R.W.; Ho, C. Y.; Klemens, P. G.: Thermal Conductivity, Non-Metallic Solids. Thermal Properties of Matter, vol. 2, New York-Washington: IFI/Plenum, 1970.Search in Google Scholar

Received: 2005-5-10
Published Online: 2013-05-06
Published in Print: 2005-11-01

© 2005, Carl Hanser Verlag, München

Downloaded on 12.4.2026 from https://www.degruyterbrill.com/document/doi/10.3139/124.100259/html
Scroll to top button