Published online by Cambridge University Press: 04 July 2016
In many internal flow problems, the velocity profile of the flow in a duct of a given cross section is of major importance. In combustion chamber flow, for example, the entry velocity profile is a critical factor in determining the relative amounts of primary and secondary combustion air. Further, in the flow in an axial compressor, the peaked velocity profile between the root and the tip of the rotor blades has a marked effect upon the design of the blading. Recent work by Zanker has shown the effect of variation in velocity profile upon the accuracy of orifice-plate flowmeters.