ENGG 2230 Lecture Notes - Lecture 12: Hydraulic Head, Turbulence, Reynolds Number

• School: University of Guelph
• Department: Engineering
• Course: ENGG 2230
• Professor: Bill Van Heyst

Document Summary

The critical number is 2300: below that the flow is laminar, above that the flow is turbulent. Head loss in a pipe is caused by friction. In a pipe with equal flow and equal diameter between two sections the equation is. Darcy-weisbach equation: l is the length of the pipe, f is the darcy friction factor, (cid:4672)+ (cid:2870)+(cid:4673)(cid:2869)=(cid:4672)+ (cid:2870)+(cid:4673)(cid:2870)+ (cid:1858, (cid:1858) is head loss due to friction. (cid:2869)f(cid:3117)(cid:3118)= 1. 8log[(cid:4678)(cid:2874). 9(cid:3032)+( (cid:2871). (cid:2875))(cid:2869). (cid:2869)(cid:2869)(cid:4679): d is the diameter of the pipe, is the wall roughness. Calculate hf given d, l, q or v, , , g. Calculate v or q given d, l, hf, , , g.