Data Processing In Fluid Mechanics Laboratory

Abstract

In the criteria for Accrediting Engineering Program, it is emphasized that engineering programs should demonstrate that their graduates have an ability to apply knowledge of mathematics, science, and engineering in their curriculum. They should also have the ability to design and conduct experiments, as well as analyze and interpret data. In the undergraduate Fluid Mechanics Laboratory the students conduct ten basic experiments, which proves to be a very fruitful experience for them. They can actually verify the existing theory, which they have learned in their lecture assignments. Sometimes the students face problems processing data on the computer. The results they get may not be what they expect. This can be frustrating. Too much dependence on the computer output and improper interpretation of the data lead to such problems. A simple error in the data can cause the result to deviate far from what is expected. The following laboratory assignments are selected in this paper as examples for discussion: a) Flow through a Venturi b) Calibration of a Triangular Weir The results are initially found to be inconsistent. But, with a little modification and adjustment, the results are found to be very convincing. The students are required to investigate the reasons for the inconsistency. They have to study if any important factor is overlooked during the data processing.