Pro/Forums - View Single Post

bobo5195 · 03-07-2006, 06:52 AM

I need to think about this stuff and relearn Fourier and heat transfer equations that is why it is going to take me 10 hours. On a side(off topic) notes some time or another I need to put something in the wiki so people understand what turbulence is (it is not simple by a long long way) and get off the whole idea of turbulators and stuff. I did see someone using Reynolds number sometime and that made me happy, think the context was wrong and length and velocity scales were not defined but it was nice.

I have skimmed through a few forums and they are slightly helpful as I need practical experience and some more immersion in the subject. Which is why I won’t post anything sciency now.

Variation across the die is something I should derive as it is fairly simple. The main danger is including too many variables so the model is not descriptive. As an example the washing machine model I mentioned earlier. I could have like 60 variables and make a very good mathematical model of how it’s going to behave or put it in FEA. But in reality I barely know 2 good variables so any model that detailed is going to be awful as I need to fit in 58 guesses.

Key point is stick to what we know and try to ignore the rest. To give another engineering quote (this is becoming a habit):

“An engineers dream is drawing a straight line through a complex double log plot”.

And Stew I have believe your point of view more than Bills on this and I find your view far from boring.

03-07-2006, 06:52 AM	#42
bobo5195 Cooling Savant Join Date: Aug 2005 Location: uk Posts: 400	Re: T junction temp I need to think about this stuff and relearn Fourier and heat transfer equations that is why it is going to take me 10 hours. On a side(off topic) notes some time or another I need to put something in the wiki so people understand what turbulence is (it is not simple by a long long way) and get off the whole idea of turbulators and stuff. I did see someone using Reynolds number sometime and that made me happy, think the context was wrong and length and velocity scales were not defined but it was nice. I have skimmed through a few forums and they are slightly helpful as I need practical experience and some more immersion in the subject. Which is why I won’t post anything sciency now. Variation across the die is something I should derive as it is fairly simple. The main danger is including too many variables so the model is not descriptive. As an example the washing machine model I mentioned earlier. I could have like 60 variables and make a very good mathematical model of how it’s going to behave or put it in FEA. But in reality I barely know 2 good variables so any model that detailed is going to be awful as I need to fit in 58 guesses. Key point is stick to what we know and try to ignore the rest. To give another engineering quote (this is becoming a habit): “An engineers dream is drawing a straight line through a complex double log plot”. And Stew I have believe your point of view more than Bills on this and I find your view far from boring.