How to select Characteristic in Length Fluid Mechanics | Reynolds Number | GATE

Characteristic Length selection in Fluid Mechanics is based on concept of Boundary Layer Development. NOTE: INCASE OF ANNULUS I DIDNOT MULTIPLY 4 WITH CROSS SECTIONAL AREA BY MISTAKE..PLEASE REVIEW IT. For more content subscribe Viewd Mechanical: http://bit.ly/viewdmechsubs Interview questions for mechanical: https://bit.ly/interviewmechquestions