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Satria Damarnegara
Civil Engineering Department, Institut Teknologi Sepuluh Nopember

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TRANSCRITICAL FLOW SIMULATION USING SHALLOW WATER EQUATION MODEL Satria Damarnegara; Rheszha Pahlavi Ali; Mohamad Bagus Ansori
Journal of Civil Engineering Vol 34, No 2 (2019)
Publisher : Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j20861206.v34i2.6468

Abstract

This paper shows the capabilities of DELFT3D-FLOW shallow water equation solver on transcritical flow. Two grid configurations are tested using a shock capturing numerical schemes that available on the solver. The simulation shows a good agreement with the analytical solution and proper grid resolution is needed to obtain a stable result. The model then used to simulate a real scale spillway chute channel of Logung Dam in Kudus-Central Java. The model could properly simulate the hydraulic jump, calculate the Froude number and stilling basin performance.
Wave numerical model of swell and sea at Rote strait Satria Damarnegara; Fuddoly Fuddoly; Dyah Iriani Widyastuti
Journal of Civil Engineering Vol 35, No 2 (2020)
Publisher : Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j20861206.v35i2.8625

Abstract

A spectral wave numerical simulation based on SWAN is used to model 10 years wave climate at Rote Strait, Nusa Tenggara Timur province. ERA5 reanalysis data of total wave and wind is used for model forcing. Simulation results show waves direction in Rote strait are coming from southeast and southwest. Waves direction at nearshore of southeast Timor island coast are coming from southeast because of refraction and diffraction. Waves height over 0.8 m occurs in 320 days in one year. 50 years wave return period calculated at 2.68 m height.
Co-Authors Dyah Iriani Widyastuti Fuddoly Fuddoly Mohamad Bagus Ansori Rheszha Pahlavi Ali