Stability ?in the large? of a stationary regime of a heterogeneous nuclear reactor

1973 ◽  
Vol 34 (6) ◽  
pp. 587-590
Author(s):  
V. V. Mikishev ◽  
Yu. F. Trunin
Keyword(s):  
Nuclear Reactor ◽  
Stationary Regime ◽  
Heterogeneous Nuclear Reactor

A Comparison of Heterogeneous Nuclear-Reactor Lattice Theory with Experiment

1968 ◽  
Vol 31 (1) ◽  
pp. 57-66
Author(s):  
W. E. Graves ◽  
F. D. Benton ◽  
R. M. Satterfield
Keyword(s):  
Lattice Theory ◽  
Nuclear Reactor ◽  
Heterogeneous Nuclear Reactor ◽  
Reactor Lattice

Dynamic Response of Heat Exchangers Having Internal Heat Sources—Part IV

1961 ◽  
Vol 83 (3) ◽  
pp. 321-336 ◽  
Author(s):  
W. J. Yang ◽  
J. A. Clark ◽  
V. S. Arpaci
Keyword(s):  
Dynamic Response ◽  
Heat Exchangers ◽  
Nuclear Reactor ◽  
Amplitude Ratio ◽  
Internal Heat ◽  
Fluid Temperature ◽  
Dependent Rate ◽  
Laplace Transform Technique ◽  
The Laplace Transform ◽  
Heterogeneous Nuclear Reactor

This paper investigates the dynamic response of a heat exchanger having a sinusoidally time-dependent rate of internal heat generation. Results for both the transient-periodic and the steady-periodic, or frequency response, are given. These results include the response of the wall and fluid temperatures and the wall-fluid temperature difference. A phenomena of resonance in the amplitude ratio and phase shift is disclosed. Analytical results are obtained through the use of the Laplace transform technique. Experimental results are presented which compare favorably with the theoretical analysis. Heat exchangers to which these results apply include the heterogeneous nuclear reactor.

In situ TEM studies of irradiation effects for materials improvement

1991 ◽  
Vol 49 ◽  
pp. 452-453
Author(s):  
Charles W. Allen
Keyword(s):  
Nuclear Reactor ◽  
Austenitic Stainless Steels ◽  
High Energy ◽  
Point Of View ◽  
In Situ Tem ◽  
Irradiation Effects ◽  
Tem Analysis ◽  
Radiation Induced ◽  
Analytical Tools

Irradiation effects studies employing TEMs as analytical tools have been conducted for almost as many years as materials people have done TEM, motivated largely by materials needs for nuclear reactor development. Such studies have focussed on the behavior both of nuclear fuels and of materials for other reactor components which are subjected to radiation-induced degradation. Especially in the 1950s and 60s, post-irradiation TEM analysis may have been coupled to in situ (in reactor or in pile) experiments (e.g., irradiation-induced creep experiments of austenitic stainless steels). Although necessary from a technological point of view, such experiments are difficult to instrument (measure strain dynamically, e.g.) and control (temperature, e.g.) and require months or even years to perform in a nuclear reactor or in a spallation neutron source. Consequently, methods were sought for simulation of neutroninduced radiation damage of materials, the simulations employing other forms of radiation; in the case of metals and alloys, high energy electrons and high energy ions.

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