Naslov
Reducing channel flow energy losses using deflectors

Autori
Fućak, Sanjin ; Čarija, Zoran ; Mrša, Zoran

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
PROCEEDINGS of the 6th International Congress of Croatian Society of Mechanics / Smojver, Ivica ; Sorić, Jurica - Zagreb : Hrvatsko društvo za mehaniku (HDM), 2009, 1-9

ISBN
978-953-7539-11-5

Skup
6th International Congress of Croatian Society of Mechanics

Mjesto i datum
Dubrovnik, Hrvatska, 30.09.2009. - 02.10.2009

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
optimization; parametric design; CFD; HPP outflow channel

Sažetak
This paper gives an overview of the optimization process for deflector shape design. The task was to lower the water level in the S-shaped outflow channel of HPP Vinodol by steadying the flow and reducing energy losses. Parameterized designs of ten deflectors were optimized using a genetic algorithm that evaluated each setup by running a 2D fluid flow simulation. After analyzing total pressure losses in channel segments, optimal designs were chosen according to total pressure loss and flow uniformity throughout the channel. The resulting best case design set showed a 37% reduction in energy losses over the worst-case representation of the actual channel. This provides a solid basis for further simulations using a 3D fluid flow numerical model of the channel. The 3D simulation based on the best 2D case design set showed a significant decrease in spillage through the channel ceiling into the above engineering room.

Izvorni jezik
Engleski

Znanstvena područja
Strojarstvo, Temeljne tehničke znanosti

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