Path: Top > S2-Theses > Civil Engineering-FTSL > 2008

APLIKASI GELOMBANG KINEMATIS DAN DINAMIS PADA MODEL HUJAN-LIMPASAN STUDI KASUS DAS CITARUM HULU

KINEMATIC AND DYNAMIC WAVE APPLICATION ON RAINFALL-RUNOFF MODEL (CASE STUDY UPPER CITARUM WATERSHED)

Master Theses from JBPTITBPP / 2017-09-27 15:23:34
Oleh : HARSIGIT LOKANTARA (NIM 25005027), S2 - Civil Engineering
Dibuat : 2008, dengan 8 file

Keyword : distributed model, rainfall-runoff, Upper Citarum Watershed, overland flow, channel flow, kinematic wave, dynamic wave, Abbott-Ioneschu

Sebuah model hujan-limpasan konseptual terdistribusi diaplikasikan pada 13 sub das dalam das Citarum Hulu untuk memodelkan efek dari gelombang kinematik dan dinamis pada distribuasi limpasan. Pendekatan untuk kalibrasinya dilakukan dengan menghubungkan nilai-nilai parameter tertentu dalam model dengan karakter fisik dari sub das. Tataguna lahan, ukuran grid dalam sub das, dan struktur topografinya digunakan untuk penentuan dari nilai-nilai parameter model. Propagasi gelombang kinematis digunakan untuk mendisribusikan aliran overland flow dan channel flow di anak-anak sungai. Hasilnya, didapat sebuah hidrograf di masing-masing outlet anak sungai. Ketigabelas hidrograf outlet kemudian didistribusikan sepanjang sungai utama (Sungai Citarum) menggunakan propagasi gelombang dinamis dan skema Abbott-Ioneschu untuk menghasilkan hidrograf akhir di outlet Nanjung. Hidrograf outlet di Nanjung hasil dari model kemudian diverifikasikan dengan data debit observasi di titik tersebut. Hasilnya, propagasi gelombang kinematis tidak memuaskan untuk mendistribusikan aliran dengan kemiringan lahan/saluran yang landai. Metoda ini tidak memiliki mekanisme hidrolis untuk menggambarkan propagasi ke arah hulu dengan diabaikannya suku-suku dinamis dalam aliran.

Deskripsi Alternatif :

A distributed conceptual rainfall-runoff model applied to 13 catchments in the Upper Citarum Watershed for the purpose of kinematic and dynamic wave effect modeling on the runoff distribution. An approach to calibrate the model by associating the model parameters with the physical catchments characteristics was implemented. Land uses, catchments grid size, and topographic structures were used as the bases for regionalization of the model parameters. Parameter values were initially associated with these catchments characteristics and were finally transferred into their catchments grid scale values. Kinematic wave propagation was performed to distribute runoff as overland flow and channel flow along the tributaries. As the result, an outlet hydrograph obtained for each tributary. Thirteen tributary outlet hydrographs continually distributed along the main river (Citarum River) by dynamic wave propagation using Abbott-Ioneschu scheme and yield the final hydrograph at Nanjung outlet. Nanjung outlet hydrograph obtained from model finally verified with the Nanjung observe discharge. As the result, kinematic wave propagation was not satisfying for distributing runoff at a particular point in the land or channel with a mild slope. This method has no hydraulic mechanisms to describe upstream propagation as kinematic wave neglecting the dynamic terms.

Copyrights : Copyright Â(c) 2001 by ITB Central Library. Verbatim copying and distribution of this entire article is permitted by author in any medium, provided this notice is preserved.

Beri Komentar ?#(0) | Bookmark

PropertiNilai Properti
ID PublisherJBPTITBPP
OrganisasiS
Nama KontakUPT Perpustakaan ITB
AlamatJl. Ganesha 10
KotaBandung
DaerahJawa Barat
NegaraIndonesia
Telepon62-22-2509118, 2500089
Fax62-22-2500089
E-mail Administratordigilib@lib.itb.ac.id
E-mail CKOinfo@lib.itb.ac.id

Print ...

Kontributor...

  • Pembimbing: Ir. Iwan K. Hadihardaja, Ph.D. dan Ir. Mulyana Wangsadipoera, M.Eng., Editor: Vika A. Kovariansi

File PDF...