Pemodelan Numerik Bangunan Peredam Energi Bendungan Pomalaa dengan Analisa Komputasi Fluida Dinamis

In the physical model testing Pomalaa Dam spillway, the series 4 energy dissipator which has a base elevation of +41,00 m has been able to dissipate the flow energy well at the Q 100y , Q 1000y , and Q PMF , but it is necessary to try alternative designs that more effective and efficient. The method used is a numerical model simulation using an application based on Computational Fluid Dynamics (CFD), then the result will be verified with physical model using Brier-Skill Score (BSS). After that, an alternative design was carried out in the form of a variation in the base elevation of the energy dissipator, that are +42,00 m; +43,00 m; and +44,00 m, then the best model is selected as a recommendation from the simulation result. The result of the verification of the numerical model using BSS show that numerical model is quite capable of representing the physical model. The best simulation result is an energy dissipator with a base elevation of +42,00 with efficiency of energy dissipation at Q 100y , Q 1000y