Analisis Pola Aliran Saluran Terbuka Dengan Hambatan Persegi Panjang, Bulat, Segitiga, Dan Wing

Abstract

ABSTRACT

If the flow is uniform (fixed / uniform) in an open channel when it encounters an obstacle / collision in the distraction, then the velocity of the water particles around the barrier is not the same. This will change the nature of the flow from uniform to non-uniform or from a flow that is laminar (parallel) to turbulent (irregular). Therefore, it is necessary to study the open channel flow pattern due to obstacles / collisions in its flow. This study aims to analyze the flow pattern of the open channel in various forms of resistance / collision. The experiments were carried out without obstacles, obstacles in the form of a rectangle, a triangle shape, a round shape and a wing shape. The results of the observations in this study are a flow that has no resistance, the flow pattern is uniform (uniform) and laminar (regular). regular) which is given resistance will change its nature to turbulent (irregular), the factors that affect the flow pattern in the open channel are the channel cross section and the shape of the barrier object. From the results of the research that has been carried out, it is recommended that the use of dye as a flow line be reviewed, because the observation glass tube becomes cloudy so that the visualization is not exactly as it is.

Key words: flow pattern, obstacle form