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Unread 09-20-2005, 07:01 AM   #60
mwolfman
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Join Date: Jun 2004
Location: Sweden
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Quote:
Originally Posted by bobo5195
engineering approximation are guesses they are not philosophy, philosophy is based on logical reason.
…and in fluid dynamics combined with heat transfer the line is very narrow. (haven’t you started to make your approximations with logic)

Quote:
Originally Posted by bobo5195
You most certainly dont need 125gb of ram for this simulation eek. Then chem engers run full multiphase analysis on 80gb of ram. RUn some simplifying assumptions. Aximsymetric flow at the outlet of one nozzle. This makes it 2d and you can add thousands of cells if you want your going to get near enough the same answer if you use the right cell geometry. Problems are going to occur when you get down to microscale roughness that cant be modelled…
Nope, look at the thumb... simulation of an entire block…
Why simulate the entire block? In the Storm block the mass flow isn’t constant throw all the channels, the amount of heat that each jet varies a lot, the amount of water surrounding the exit from each cavity, even the density will differ between different jets (due to different water temperature and pressure)…
The assumptions that you want to make will hopefully tell you in witch direction that a small change in a
And I'm down at micro scale, and I think Cathar is in the same region (0,45mm)…
Quote:
Originally Posted by bobo5195
...but im guessing thats beyond your abilities leave the phds to it.
You are only a second year student… consequently, EOD

Les: Thanks for that link, my concern was rather on the fact that Cathar uses 0.45 mm hols, that means that the amount of wall friction will be huge compared to a normal block, an empirical test should easily provide with an answer… Since we are talking about minor gains, even a gain in 5% of cooling performance would be considered a significant gain. The question should rather be, what’s the optimal cooling medium for the G7? In Cathar’s (and Swiftech)case this could lead to a cooling additive that should be mixture with battery water…
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