Reactor Model: One-Group

Presentation on theme: "Reactor Model: One-Group"— Presentation transcript:

Reactor Model: One-Group
Briefly, we go through project 3. R z H y x r Reactor Nuclear Reactors, BAU, 1st Semester, (Saed Dababneh).

Reactor Model: One-Group
Nuclear Reactors, BAU, 1st Semester, (Saed Dababneh).

Reactor Model: One-Group
z H y x r Reactor Criticality condition? Nuclear Reactors, BAU, 1st Semester, (Saed Dababneh).

Reactor Model: One-Group
z Reflected Slab Reactor Core Reflector Reflector x a/2 For steady-state, homogeneous, 1-D b a b C  Core R  Reflector Nuclear Reactors, BAU, 1st Semester, (Saed Dababneh).

Reactor Model: One-Group
Verify. BC Criticality condition. Nuclear Reactors, BAU, 1st Semester, (Saed Dababneh).

Reactor Model: One-Group
Criticality condition. For bare slab CC was  / 2. Smaller core for reflected reactor. Save fuel. Nuclear Reactors, BAU, 1st Semester, (Saed Dababneh).

Criticality “Calculation”
Can we solve “real” reactor problems analytically? The previous discussion provides understanding of the concepts but also indicates the need for computational techniques. Assume: Adjust parameters so that  = 0 (Steady-state). What parameters and how to adjust them? Nuclear Reactors, BAU, 1st Semester, (Saed Dababneh).

Criticality “Calculation”
Fixed design and geometry  the free variable is the fuel. As we did earlier (be guided by HW 21): Nuclear Reactors, BAU, 1st Semester, (Saed Dababneh).

Criticality “Calculation”
Build an algorithm. “Guess” (reasonably) initial kfudge and  (or ) for the zeroth iteration. Calculate the initial source term. Iterate: Nuclear Reactors, BAU, 1st Semester, (Saed Dababneh).

Criticality “Calculation”
Or: If for example k > 1, take action to reduce source or increase absorption. How? Nuclear Reactors, BAU, 1st Semester, (Saed Dababneh).