Sabila, Adriazka Faza (2018) Karakteristik Aliran Dua Fasa Gas-Cairan Non Newtonian Melalui Belokan Pipa. Sarjana thesis, Universitas Brawijaya.
Abstract
Penelitian terhadap aliran dua fasa amat intensif dilakukan, dikarenakan banyaknya aplikasi aliran dua fasa pada bidang industri seperti heat exchanger, boiler, dan reactor. Pada penelitian ini dilakukan pengamatan karakterisitik aliran dua fasa gas-cairan non newtonian melalui pipa belokan. Gas yang digunakan adalah nitrogen, sedangkan cairan yang digunakan adalah ultra pure water (UPW) dan larutan polyacrylamide 0,4 wt% (PAM 0,4 wt%) sebagai cairan non newtonian. Lalu, belokan yang digunakan adalah pipa akrilik dengan diameter dalam sebesar 25,4 mm dan sudut sebesar 90o. Tujuan dari penelitian ini adalah untuk mengetahui parameter aliran dua fasa yang meliputi pola aliran, bubble length, bubble velocity, dan void fraction. Penelitian ini dilakukan dengan menggunakan metode eksperimental dimana data penelitian didapat dari pengujian pada alat yang sudah dirancang. Data penelitian didapatkan dari pengolahan video slow motion yang diperoleh dari high speed video camera. Pola aliran yang didapatkan pada penelitian ini adalah plug dimana variasi debit fluida dan jenis cairan sangat mempengaruhi bentuk dari plug tersebut. Lalu nilai bubble length dan bubble velocity pada PAM 0,4 wt% lebih tinggi dibandingkan dengan nilai bubble length dan bubble velocity pada UPW. Selain itu seiring dengan meningkatnya debit gas maka nilai dari void fraction akan meningkat. Selanjutnya pengaruh belokan sangat mempengaruhi bubble velocity dimana bubble velocity meningkat pada saat fluida melewati belokan.
English Abstract
Study on two-phase flow was very intensively done, because of its abundance in engineering field applications such as heat exchanger, boiler, and reactor. In this study, obervation in the charactheristic of gas-non newtonian liquid two-phase flow through pipe bend has been done. Nitrogen was used as the test gas, while ultra pure water (UPW) and polyacrylamide aqueous solution 0,4 wt% (PAM 0,4 wt%) was used as the non newtonian test liquid. And then, the pipe bend that was used for this study is made from acrylic, with inner diameter of 25,4 mm and have a bend angle of 90o. The purpose of this study is to acknowledge the parameters in two-phase flow such as flow patterns, bubble length, bubble velocity, and void fraction. In this study, experimental method was used where the results was obtained by running an experiment with an experimental instrument that has been designed before. The results of this study was obtained by observing the slow motion video obtained from high-speed video camera. The flow pattern that was observed in this study is plug flow, which the variation of fluid flow rate and the variation of liquids were very affecting the shape of the plug flow. Then, the value of bubble length and bubble velocity is higher on PAM than UPW. And then, void fraction increased with increasing of gas debit. After that, the pipe bend has a high influence on the bubble velocity, which makes the bubble velocity increases while the fluids flowing through the pipe bend.
| Item Type: | Thesis (Sarjana) |
|---|---|
| Identification Number: | SKR/FT/2018/1109/051812102 |
| Uncontrolled Keywords: | eksperimental, aliran dua fasa gas-cairan, cairan non newtonian, void fraction, belokan pipa. experimental, two-phase flow gas-liquid , non newtonian liquid, void fraction, pipe bend. |
| Subjects: | 600 Technology (Applied sciences) > 681 Precision instruments and other devices > 681.7 Other scientific and technological instruments, machinery, equipment > 681.76 Technological equipment > 681.766 Equipment for chemical and related technologies > 681.766 5 Equipment for petrolium and industrial gas technologies |
| Divisions: | Fakultas Teknik > Teknik Mesin |
| Depositing User: | Budi Wahyono Wahyono |
| Date Deposited: | 03 Jul 2019 02:28 |
| Last Modified: | 29 Mar 2022 02:16 |
| URI: | http://repository.ub.ac.id/id/eprint/163130 |
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