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Effect of the microchannel configurations on mixing performance

Effect of the microchannel configurations on mixing performance / Nur Fatihah Yunus
Dengan perkembangan teknologi dalam dekad ini, teknologi mikrosaluran telah menjadi salah satu alat yang paling penting dalam sintesis kimia kerana manfaat dalam menyediakan banyak percampuran dalam masa yang singkat. Ia juga terkenal kerana keupayaannya dalam melaksanakan proses intensifikasi selari dengan trend dalam industri. Dengan kebolehan dalam mengurangkan saiz, kos rendah, produktiviti yang tinggi dan meningkatkan keselamatan, membuat reaktor mikro sebagai salah satu alat yang berguna untuk masa depan kejuruteraan kimia. Kualiti pencampuran dalam peranti bendalir mikro disiasat dengan lebih mendalam untuk menaik tarafkan kajian-kajian yang telah dikaji oleh penulis lain. Dalam kajian ini, tiga dimensi Pengiraan Dinamik Bendalir (PDB) dengan keratan rentas bulat telah dibangunkan untuk menyiasat kualiti pencampuran dalam konfigurasi saluran mikro yang berbeza dengan halaju masuk yang berbeza, pekali resapan dan jenis bersirat. Keputusan telah menunjukkan bahawa halaju masuk mempunyai kesan yang besar kepada prestasi pencampuran. Prestasi pencampuran yang lebih cepat dapat dilihat apabila halaju masuk yang rendah dan pekali resapan yang tinggi telah digunakan. Jenis bersirat denda menunjukkan kualiti pencampuran lebih perlahan daripada jenis bersirat biasa kerana ia mengambil banyak masa walaupun ia adalah lebih baik dalam menyelesaikan masalah dalam perisian PBD. Mikrosaluran berbentuk Y menunjukkan kualiti pencampuran lebih baik daripada microchannels berbentuk T dan Arrow berbentuk. _______________________________________________________________________________________________________ With the technology development in this decade, microchannel technology has became one of the most important tool in chemical synthesis because of its benefit in providing greatly enhanced mixing in short time. It is also widely known because of its ability in performing the process intensification which significantly catching up with the trend in the industry. With the abilities in reducing the size, low cost, high productivity and enhance safety, make microreactor as one of those useful tools to the future of chemical engineering. The mixing quality in the microfluidic device is further investigated in order to improve the one that have been studied by other authors. In this study, three-dimensional Computational Fluid Dynamics (CFD) model with circular cross section have been developed to investigate the mixing quality in different microchannel configurations with different inlet velocity, diffusion coefficient and type of meshing. The results have shown that inlet velocity has a great impact on the mixing performance. The faster mixing performance can be seen when low inlet velocity and high diffusion coefficient have been used. The fine type of meshing shows slower mixing quality than normal type of meshing because it takes a lot of time even though it is better in solving the problem in CFD software. Y-shaped microchannel shows better mixing quality than T-shaped and Arrow-shaped microchannels.
Contributor(s):
Nur Fatihah Yunus - Author
Primary Item Type:
Final Year Project
Identifiers:
Barcode : 00003107178
Accession Number : 875007298
Language:
English
Subject Keywords:
technology development; microchannel technology; chemical synthesis
First presented to the public:
6/1/2017
Original Publication Date:
4/27/2018
Previously Published By:
Universiti Sains Malaysia
Place Of Publication:
School of Chemical Engineering
Citation:
Extents:
Number of Pages - 109
License Grantor / Date Granted:
  / ( View License )
Date Deposited
2018-04-27 15:56:08.194
Date Last Updated
2019-01-07 11:24:32.9118
Submitter:
Mohd Jasnizam Mohd Salleh

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