Steady flow means when the value of a parameter doesn't vary over time. Uniform flow means when the value of a parameter doesn't vary over space. Skip to the end for general difference. Suppose a point A, point B and point C in a fluid flow.What is a steady flow process?
There are few definitions that can be used to describe a steady flow process. First, a steady flow process has the fluid flowing through the CV steadily. Since the fluid is flowing steadily, the mass flow value through the device would be constant. Next a steady flow process has no intensive or extensive properties that would change with time.