Shield Diagram

Shield Diagram

 

File pdf : Quiz 1. 2012_01_03

*posted as supporting graphics for open channel hydraulics

(03 January 2012)

Hidrograf Satuan (Unit Hydrograph) dari Data Terukur

iseng2, mari kita catat tentang Metode Polinomial dan Metode Collins di sini.

Beberapa cara menentukan hidrograf satuan (Unit Hydrograph) dari data terukur, diantaranya adalah dengan Metode Polinomial, dan Metode Collins. Tentu saja masih dengan mengingat asumsi & teori hidrograf satuan.

Ilustrasi (misalnya hujan efektifnya 3 jam):

ilustrasi hidrograf satuan (1)

atau:

Rankine Half Body

Example of Rankine Half Body Solution.

*I’ll edit this post later..

Contoh Rankine Half Body

*Grafik menyusul gan

Thanks

Doublet (Source & Sink ) : (1)

untuk penyelesaian persoalan doublet (gabungan dari source dan sink), dilakukan perhitungan superposisi terhadap keduanya, di suatu titik P (x,y).

Untuk menyelesaikan ini, let’s back to our math, misalnya:

• turunan cos x = – sin x
• turunan Ln (x) = 1/x
• dan sebagainya. I will update the other formulas later on.

here is the example of solution for doublet (source and sink).

ummm… i think i did it wrong… @_@

Hummm…

This morning, just few seconds before i woke up, i remember about my exam. The Numerical Method Exam, which should be my favourite subject ever.aaaiih,,, forget it forget it forget it forget it… [mantra spell ]

-.-

i think i did it wrong…

Numerical Simulation of Flow and Local Scour around Srandakan Bridge Piers

Abstract

Riverbed degradation in Progo River had caused the failure of Srandakan Bridge I, which is located in Bantul Regency, Yogyakarta Special Province, in April 2000. Simulations were performed to simulate the supercritical flow in one-dimensional model. As the velocity variation in the transverse are more important than the vertical direction, this work simulates the supercritical flow in two-dimensional depth-averaged using FESWMS module in the SMS software. Besides the river flow simulation, the pier scour depth was also predicted in FESWMS using CSU equations. The simulation shows that the existence of Srandakan Bridge I will not deepen the scour depth in Srandakan
Bridge II.

Keywords: numerical simulation, FESWMS, pier scour

miss this….!! :D

So…

I did my undergraduate final thesis using SMS (Surface Water Modelling System) Software. Not using the famous RMA2, i used the FESWMS module. Why….??? i choose the module because of two reason. First, because i wanted to simulate a combined flow (Sub critics and Supercritics) at the same simulation. RMA2 was not able to do that. Second, because no one in my campus (as far as i know) had used FESWMS before. So i was the first student who tried the module…!! yeay..!! (so whattt…??? lol).

by the way, during the process of learning FESMWS, i often visit this forum from AQUAVEO. i met many great hydraulic engineers there and i felt like talking to them personally. (oh, lebay…wkwkwk).

Now i miss you..!!

standard deviation and standard error

okey..

“Standard error itu apa?”

pertanyaan ini muncul ketika membahas statistik deskriptive hasil pengolahan otomatis dari excel melalui Data Analyst add-on nya. Mulailah googling, as usual, dan terpilihlah penjelasan favorit versi saya: