Experimental Study on Velocity Profiles Due to Ecological Barriers

Tallar, Robby Yussac and Sawang, Teofilus (2021) Experimental Study on Velocity Profiles Due to Ecological Barriers. In: 1st International Conference on Emerging Issues in Humanity Studies and Social Sciences, 1-2 July 2021, Bandung.

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Abstract

Streams are very complex system. In stream restoration projects, the existence of ecological structures should be considered as an important variable in the project. A lot of previous research focused on ecological aspects only, therefore the main purpose of this paper is to examine the velocity profile due to ecological barriers in downstream area of weir. A laboratory study to investigate the effect of ecological barriers in terms of velocity profile in 8 m length x 40 cm width a rectangular channel is presented. The study consists of an extensive set of rectangular flume experiments for flows with certain The results show that the average velocity (v=0.35 m/sec) was occurred for without ecological barriers condition. By comparing the scenarios, this study showed that ecological barriers (dl = 25 cm) has the highest velocity (v = 0.41m/s), meanwhile scenario 5 (v=0.36 m/s) has the nearest velocity with the scenario 1 (v=0.35 m/s). It indicated that the existence of ecological barriers had given the higher velocities in streams. The distance length between ecological barriers showed that the farther the distance length used the lower the formed velocity profiles.

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