A Computerized Data Acquisition Interface to Measure Turbulent Shear Flow Velocity Profiles behind a Grid of Parallel Rods

摘要

A design study was conducted to develop a computerized, electromechanical data acquisition system interface to instrumentation/apparatus measuring turbulent shear flow velocity profiles behind a grid of parallel rods. Data on profiles generated behind two such grids was acquired via a digital controller and a user-built interface to the data acquisition system. Conclusions were drawn that the digital controller did provide a superior means in collecting/reducing data than existed before, that the interface did provide an enhanced capability in documenting fluid flow phenomena under such test conditions, and that the experience did indicate future work in automating instrumentation/apparatus electromechanical components. (Author)