u/NewWatercress7851

▲ 1 r/COMSOL

I want to see different temperature drops for laminar vs turbulent flow.

The setup looks like this:

one component including one heat transfer in fluids, laminar flow, and turbulent flow

two nonisothermal couplings, one between the laminar and one between the turbulent

two time-dependent studies, one for each where heat flyx is applied from the start, and flow is applied after some time usig step function

Issue:

The turbulent case is unaffected by the flow entering, so the temperature keeps rising. in the laminar case the temperature drops noticably due to the flow.

i have tried:

splitting laminar and turbulent case into components

having two «heat transfer in fluids», one for each

running the laminar case, then applying rans to the laminar flow.

any help?

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u/NewWatercress7851 — 9 days ago
▲ 1 r/Machinists+1 crossposts

i have been 3d printing this part for initial testing and want to cnc machine it. I'm uncertain on the best way to create those luer locks. Are Luer taps common?

These are the options i have come up with:

1.

https://preview.redd.it/gfznk7cg9bzg1.png?width=1215&format=png&auto=webp&s=35f93483488bc453d57ec4cd49b8d96bfc3baa45

2.

https://preview.redd.it/bjsgeuuk9bzg1.png?width=945&format=png&auto=webp&s=2e2aa2986dd37519511bacdfc40740962273e09e

where these Luer connections are of the type M8 to Luer, like these

https://preview.redd.it/3gg10wfp9bzg1.png?width=582&format=png&auto=webp&s=b16321eeec2e851b7218ae0d0b23e2d65cbc949c

Any feedback? is option 1 or option 2 best?

reddit.com
u/NewWatercress7851 — 10 days ago