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Experimental study of the hydraulic efficiency between a depressed and a non-depressed grate in bandar baharu, kedah

Experimental study of the hydraulic efficiency between a depressed and a non-depressed grate in bandar baharu, kedah / Sarah Alia Md Wakif
Kajian ini dilakukan untuk mengkaji kesan gegeluk yang tidak mempunyai lekukan dan kecekapan hidraulik gegeluk bagi sistem perparitan di Malaysia. Lokasi kawasan kajian terletak di Bandar Baharu sekitar 9.8 km dari Kampus Kejuruteraan USM. Gegeluk membantu mengalirkan air bertakung daripada permukaan jalan raya. Oleh itu, reka bentuk gegeluk perlulah betul dan tepat untuk mengurangkan isi padu air yang bertakung di atas permukaan jalan raya supaya pemandu boleh memandu dengan selesa dan selamat tanpa berlaku sebarang kejadian yang berbahaya. Tujuan utama kajian ini dilakukan adalah untuk membandingkan kecekapan hidraulik antara gegeluk yang mempunyai lekukan dan tidak mempunyai lekukan melalui sistem, kecerunan dan aliran yang berbeza. Bagi mengkaji kecekapan sistem gegeluk dalam skala penuh, satu model fizikal telah dibina untuk menggambarkan keadaan sebenar yang berlaku. Model fizikal mengandungi tangki masuk dan tangki keluar, pelantar ujian dan sistem gegeluk. Terdapat dua sistem gegeluk yang digunakan iaitu sistem pertengahan dan sistem penuh. Sistem pertengahan tidak membenarkan aliran melepasi gegeluk yang seterusnya manakala sistem penuh membenarkan aliran air melepasi gegeluk yang seterusnya. Kedua - dua sistem ini menunjukkan ciri - ciri yang berbeza bergantung bagaimana aliran bertindak balas. Selain itu, ujian ini dijalankan dalam beberapa bentuk kecerunan untuk menggambarkan perbezaan kecerunan sebenar di jalan raya. Sistem ini kemudiannya ditambah baik dengan meletakkan sekeping papan kayu pada tangki masuk bagi menambahkan jarak laluan aliran sekali gus mendapatkan aliran air yang lebih stabil. _______________________________________________________________________________________________________ This research was performed in order to study the effect of the hydraulic efficiency of non-depressed gully grate inlet of a Malaysian drain. The location of the site study is located at the Bandar Baharu which is approximately 9.8 km from the USM Engineering Campus. Gully inlets help to convey water ponding on the pavement surface to the inlet system; hence a proper and adequate design is necessary to reduce the stagnant water on the pavement surface so that the drivers can drive comfortably and safely without any dangerous incidents. The study was conducted with the aim to compare the hydraulic efficiency between depressed to non-depressed gully grate system with different longitudinal bed slope and cross slope under different flow conditions. In order to determine the efficiency of the gully grate system at the site, a full scaled of physical model had been constructed to demonstrate the actual conditions occur. There are two types of gully system used in this study, terminal system and intermediate system. Terminal system does not permit the approaching flow to pass through the next downstream gully whereas the intermediate system permit the approaching flow to pass through the downstream gully system. The test was also conducted with different longitudinal slope and cross slope to demonstrate the real condition of the road pavement at the highways. The system was then upgraded by adding plywood at the inlet tank to increase the flow path. The data obtained was then compared to the old system (shorter flow path) to determine the differences between two systems in terms of efficiency and water depth. Lastly, results obtained from the study are presented in the form of head (pressure) - discharge relationship, hence the comparison of hydraulic efficiency of the gully grates were established.
Contributor(s):
Sarah Alia Md Wakif - Author
Primary Item Type:
Final Year Project
Identifiers:
Accession Number : 875007622
Language:
English
Subject Keywords:
effect; hydraulic efficiency; drain
First presented to the public:
6/1/2018
Original Publication Date:
8/3/2018
Previously Published By:
Universiti Sains Malaysia
Place Of Publication:
School of Civil Engineering
Citation:
Extents:
Number of Pages - 90
License Grantor / Date Granted:
  / ( View License )
Date Deposited
2018-08-03 17:13:53.883
Date Last Updated
2019-01-07 11:24:32.9118
Submitter:
Mohd Jasnizam Mohd Salleh

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Experimental study of the hydraulic efficiency between a depressed and a non-depressed grate in bandar baharu, kedah1 2018-08-03 17:13:53.883