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.
From Japan Society of Mechanical Engineers. Sharp corners typically produce a separated flow, but they are not the only cause of separation. Flow over two cylinders. From Japan Society of Mechanical Engineers. The flow patterns over the front and back of the cylinder are quite different.