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 Post subject: Turbulent reactor flow
PostPosted: Dec 30, 2011 5:55 pm 

Joined: Oct 13, 2011 10:07 am
Posts: 1
--Concerning section 12-5 of Fluid Fuel Reactors-- When local overheating is discussed, they mention forcing turbulent flow within the reactor:

"When fission of an active constituent occurs in a molten fluoride solution, both electromagnetic radiations and particles of very high energy and intensity originate within the fluid. Local overheating as a consequence of rapid slowing down of fission fragments by the fluid is probably of little consequence in a reactor where the liquid is forced to flow turbulently and where rapid and intimate mixing occur."

A turbulent reactor should also result in enough mixing to ensure homogenous outlet composition. However, would the turbulent fluid in the reactor create any inlet problems for new fissile material?

-Enjoy your New Year's celebrations.

PostPosted: Dec 30, 2011 7:24 pm 

Joined: Jul 28, 2008 10:44 pm
Posts: 3063
None were reported in MSRE.

The concerns about the inlet (and outlets) had to do with thermal stress in accident conditions.
Suddenly changing the flow caused more stress at the inlets and outlets and the temperature changed differently in the core than the plumbing and HX. Lots of possible solutions to this so it isn't something to worry over - just something that needs to be taken into account during the design phase.

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