Flow is from left to right. From Japan Society of Mechanical Engineers. Large losses can occur, as the mechanical energy of the fluid is used to drive large unsteady eddying motions which eventually dissipate into heat. This type of flow can occur for quite small angles. Flow in a contraction.
Flow is from left to right.
From Japan Society of Mechanical Engineers. When separation occurs, however, frictional effects are always important. It is worth noting that sharp corners almost always produce a separated flow . The sudden expansion and contraction flows shown in figure 12 graphically demonstrate the problem, and these flows are clearly irreversible. Flow is from left to right.