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Development of a numerical model for the simulation of mudflow phenomenon

Development of a numerical model for the simulation of mudflow phenomenon / Alexander Yeo Ming Ming
Pada masa kini, banjir lumpur semakin kerap berlaku disebabkan oleh kepesatan pembangunan terutamanya di kawasan bukit dan tanah tinggi. Banjir lumpur meninggalkan impak yang besar terutamanya kepada kehidupan manusia, haiwan dan juga harta benda. Salah satu faktor yang menyumbang kepada berlakunya banjir lumpur adalah penebangan hutan secara berleluasan. Kejadian banjir lumpur tidak dapat dijangka. Namun demikian, pelan mitigasi dan perancangan pembangunan yang betul dapat mengurangkan impak negatif banjir lumpur ini. Simulasi komputer dengan menggunakan model berangka merupakan antara cara yang boleh digunakan dalam membuat ramalan kejadian banjir lumpur. Dalam penyelidikan ini, satu skim berangka taraf tinggi, iaitu skim Profil Interpolasi Kubik (CIP) telah digunakan dalam model berangka tersebut. Seperti model berangka yang lain, model berangka ini telah ditentusahkan dengan penyelesaian beranalisis, penyelesaian berangka, dan keputusan eksperimen yang diperolehi daripada penyelidik-penyelidik terdahulu. Model berangka ini digunakan untuk mensimulasikan senario banjir lumpur setelah keputusan yang diperolehi disahkan terlebih dahulu melalui proses penentusahan. Keputusan simulasi dapat digunakan untuk memajukan rancangan pengurangan banjir lumpur dan seterusnya dapat mengurangkan impak-impak negatif banjir lumpur. _______________________________________________________________________________________________________ Recently, mudflow has been happening on a more frequent basis due to the rapid development especially in the mountainous and highland areas. Mudflow is known to have devastating impacts on lives and properties. One of the most probable causes of mudflow is deforestation. Mudflow is hard to be predicted but mitigation plans can be developed to reduce the negative impacts of mudflow. Numerical modelling can be a handy tool to predict the dynamics and flow extent of a mudflow disaster and therefore it can be very useful and indispensable tool to develop a sound mitigation plan. In this work, a higher order numerical scheme known as the cubic interpolation profile (CIP) was adopted in the numerical model. Like other numerical models, this numerical model was verified with analytical solution, numerical solution and experimental results obtained by past researchers. The numerical model was used to simulate mudflow scenarios after ensuring that the performance of the numerical model was satisfactory through the close agreement between the results produced by the numerical model and the data obtained from literature in the verification process. The model can be extended for practical use by incorporating geospatial data in the near future.
Contributor(s):
Alexander Yeo Ming Ming - Author
Primary Item Type:
Final Year Project
Identifiers:
Accession Number : 875006845
Barcode : 00003106722
Language:
English
Subject Keywords:
mudflow; devastating impacts; deforestation
First presented to the public:
6/1/2017
Original Publication Date:
3/23/2017
Previously Published By:
Universiti Sains Malaysia
Place Of Publication:
School of Civil Engineering
Citation:
Extents:
Number of Pages - 98
License Grantor / Date Granted:
  / ( View License )
Date Deposited
2018-03-23 15:39:43.131
Date Last Updated
2020-05-21 19:14:49.35
Submitter:
Mohd Jasnizam Mohd Salleh

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