Investigation of the validity of the point-kinetic approximation and of the break-frequency method in 2-D subcritical systems
The accuracy and applicability of the break-frequency method for estimating the reactivity in a subcritical 2-D, 2-group reflected system with a distributed source is investigated for two different system sizes. The source is distributed according to the static thermal flux. This method could be useful in power reactor cores during loading conditions for determining the subcriticality. The validity of the point-kinetic approximation in the same systems is also tested. A neutron noise simulator is used to calculate the actual neutron noise induced by fluctuations of the source which is compared with the analytically calculated point-kinetic term. The break-frequency method is used to estimate the reactivity from the neutron noise calculated by the simulator. The conclusion of this work is that the point-kinetic approximation in general is not valid in 2-D, 2-group reflected systems and hence the break-frequency method is not valid either.
WHAT IS A NUCLEAR REACTOR
Video \(\PageIndex{1}\): Nuclear Energy Explained: Risk or Opportunity. Anything with the word nuclear next to it usually comes with a fair bit of misunderstanding. Hopefully, this video demystifies the process of how nuclear fuels are turned into electricity and how we can use them in combination with renewables to reduce greenhouse gas emissions and the effects on the climate that comes with high levels of them.
Arabia's Frontiers: The Story of Britain's Boundary Drawing in the Desert
List of maps Prologue Convention Abbreviations PART I GEOPOLITICAL SETTING Chapter 1. The Regional Powers: Saudi Arabia, Yemen and Britain Chapter 2. The Gulf PART 11 THE BLUE LINE Chapter 1. The 1913 Anglo-Ottoman Convention Chapter 2. The Violet Line PART III SUCCESSOR STATE Chapter 5. Britain's Relations with lbn Saud up to the End of World War 1 Chapter 6. Post-War Relations Chapter 7. Conflict with Yemen PART IV PRE-WORLD WAR 11 NEGOTIATIONS Chapter 8. Oil: The Casoc and Qatar Concession Boundaries Chapter 9. Negotiations Chapter 10. Aftermath: 1936-9 PART V A NEW CLAIM Chapter 11. Procrastination Chapter 12. The Oman Problem Chapter 13. Final Negotiations