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ukaea / PROCESS

PROCESS is a systems code at UKAEA that calculates in a self-consistent manner the parameters of a fusion power plant with a specified performance, ensuring that its operating limits are not violated, and with the option to optimise to a given function of these parameters.
https://ukaea.github.io/PROCESS/
MIT License
36 stars 11 forks source link

There are missing gaps between components on the inboard and outboard radial build. #1636

Open jonmaddock opened 2 years ago

jonmaddock commented 2 years ago

In GitLab by @cjwgriesel on Apr 22, 2022, 14:30

There are missing gaps between components on the inboard and outboard radial buil. This needs to be changed to allow for a difference in the size of the gap between inboard and outboard. i.e vvblgabi for inboard and vvblgapo for outboard.

Also the ability to add gaps between the shield, blanket and first wall both for inboard and outboard. Adding the distance the limiter protrudes from the first wall for inboard and outboard. Missing gaps in the vertical build as well.

jonmaddock commented 2 years ago

In GitLab by @mkovari on Apr 22, 2022, 14:45

A limiter may protrude into the gap between the first wall and the plasma, but it wouldn't necessarily be on the midplane, where the radial build is calculated.

jonmaddock commented 2 years ago

In GitLab by @cjwgriesel on Apr 22, 2022, 15:57

But having that estimated extra distance brings the iner and outer limiters closer to the plasma

jonmaddock commented 2 years ago

In GitLab by @cjwgriesel on Apr 22, 2022, 16:04

Also fwoth and fwith are the same and should be different especially when the the first wall maybe thick then multiple cooling pipes will be present. fwith = 2 afw + 2 fw_wall

fwoth = fwith

so afw and fw_wall are required to get the thickness of the inner and outer first wall. This can make getting a converged solution extremely tricky!!!! for a desired thickness of first wall.

jonmaddock commented 2 years ago

In GitLab by @cjwgriesel on Apr 22, 2022, 16:05

Also a gap is needed between the vacuum vessel and the shield inboard and outboard.

jonmaddock commented 2 years ago

In GitLab by @cjwgriesel on May 27, 2022, 15:05

Also there are missing gaps in the vertical build. If there is only one divertor which will be at the bottom of the machine then in the upper vertical build where the second divertor would have been their will be extra components such as limiter + Fw + Shield. If an inboard blanket exists then that could also be at the top. Then there are the extra gaps between these components.

jonmaddock commented 2 years ago

In GitLab by @cjwgriesel on May 27, 2022, 15:13

created merge request !725 to address this issue