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THE EFFECTIVENESS NUMBER OF BAFFLE BLOCKS TO REDUCE ENERGY IN TUKUTAHA TRANSITION CHANNELS Agustina Nababan; Nadjadji Anwar; Wasis Wardoyo
Journal of Civil Engineering Vol 36, No 2 (2021)
Publisher : Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j20861206.v36i2.9428

Abstract

One of the causes of damage to the weir structure is scouring. Scouring may occur along the weir channel. Scouring occurs due to the high flow velocity and high specific energy. One of the methods used to reduce specific velocity and energy is by installing baffle blocks in parts that have high-velocity and energy. The addition of baffle blocks is carried out at a place that has a high-velocity, namely the transition channel. To see the effect of baffle block variation on velocity and energy, a study was conducted. The study was conducted with four baffle block type models. The type 0 model is a baffle block installation pattern based on the initial design. Type 1 model is designed based on the planning of The Colorado State University (CSU) rigid boundary basin. Type 2 model is designed by reducing the number of baffle blocks from the initial design of 102 baffles to as many as 75 baffles. while the 3 channel type model transitions without baffle blocks. Based on the analysis of % energy loss in the transition channel, the type 0 model produces the largest energy loss. The type 0 model at maximum discharge has a % energy loss 10.821% greater than the type 1 model, 14.889% greater than the type 2 model and 33.02 % greater than the type 3 model.
THE EFFECTIVENESS NUMBER OF BAFFLE BLOCKS TO REDUCE ENERGY IN TUKUTAHA TRANSITION CHANNELS Agustina Nababan; Nadjadji Anwar; Wasis Wardoyo
Journal of Civil Engineering Vol. 36 No. 2 (2021)
Publisher : Institut Teknologi Sepuluh Nopember (ITS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j20861206.v36i2.7633

Abstract

One of the causes of damage to the weir structure is scouring that can accur along the weir channel. Scouring occurs due to the high flow velocity and high specific energy. One of the methods used to reduce specific velocity and energy is by installing baffle blocks in parts that have high velocity and energy. The addition of baffle blocks is carried out at a place that has a high velocity, namely the transition channel. To see the effect of baffle block variation on velocity and energy, a study was conducted. The study was conducted with four baffle block models type. Model type 0 is a model with the same assumptions as of the existing one. model type 1 is designed based on the planning of The Colorado State University (CSU) rigid boundary basin. Model type 2 is designed by reducing the number of baffle blocks from the initial design of 102 baffles to as many as 75 baffles. while the 3 channel model type transitions without baffle blocks. Based on the percentage of energy loss analysis in the transition channel, Model type 0 can reduce energy greater than others models. At maximum discharge, the model type 0 has an energy loss of 10.821% greater than the model type 1, 14,889% greater than the model type 2, and 33.02% greater than the model type 3.
Pengaruh Politik Dan Kekuasaan Terhadap Pembinaaan Atlet Dalam Dunia Olahraga Modern Imel M Sihombing; Agustina Nababan; Gabriel Pasaribu; M.Rizki Hutabarat; Joice Tabita Arianti Ginting; Risky Alfi Sahri Hasibuan; Yan Indra Siregar; Putra Arima; Aldo Sahputra
Pendas : Jurnal Ilmiah Pendidikan Dasar Vol. 11 No. 02 (2026): Volume 11 Nomor 02, Juni 2026 Published
Publisher : Program Studi Pendidikan Guru Sekolah Dasar FKIP Universitas Pasundan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23969/jp.v11i02.50102

Abstract

This study aims to analyze the influence of politics and power on athlete development in the modern sports world. In the current development of sports, politics and power play a significant role in determining policies, funding, coaching systems, and athlete achievements at both national and international levels. The research method used is a qualitative method with a descriptive approach through literature studies from various journals, books, and relevant scientific sources. The results of the study indicate that political involvement can have positive impacts, such as increasing budget support, developing sports facilities, and establishing regulations that support athlete achievement. However, politics and power can also have negative impacts when there is excessive intervention, unfairness in athlete selection, and the existence of certain group interests that influence the sports development system. Therefore, professional, transparent, and achievement-oriented sports organization management is needed so that the sports world can develop optimally and fairly.