Greg Harrington
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 17h awarded Popular Question Apr 22 awarded Famous Question Apr 13 awarded Popular Question Apr 4 awarded Notable Question Mar 18 awarded Notable Question Feb 29 awarded Popular Question Feb 23 awarded Popular Question Jan 28 awarded Notable Question Nov 15 awarded Popular Question Nov 13 awarded Notable Question Oct 16 awarded Famous Question Jul 18 awarded Popular Question May 14 comment Internal pipe flow - Pressure Drop @Louis Thank you for the help anyway. I have not done any calculations with undeveloped flow either so this is my first time which is why its confusing. If it was fully developed then it would be very easy and I could in fact split the pipe into separate sections (for organization purposes) without having any difficulty May 14 comment Internal pipe flow - Pressure Drop @Louis So for undeveloped flow, I have an interpolation table that determines $f$ through Reynold's number and L/D. So I separated the pipe into like you said, a 3 ft straight, 2 ft bend, 3 ft straight and 2 ft bend. I then found the Reynold's number and L/D for each section to determine each section's $f$ and each section's Pressure drop. This did not end up being the same as taking the entire 10ft pipe and finding its L/D, f, and pressure drop. So separating the pipe gave me a different f at each section because each section had a different L/D than the entire pipe. May 13 asked Internal pipe flow - Pressure Drop May 4 asked Vertical wall at 3 different temperatures - do the same natural convection coefficient correlations apply? Apr 27 asked How complex is an energy balance for this problem? Apr 16 awarded Notable Question Apr 13 revised Series of parallel thermal resistance connection for this enclosure? added 64 characters in body Apr 13 comment Series of parallel thermal resistance connection for this enclosure? you are correct, I found my error in my derivation =D the resistances do turn out to be the same