Author/Authors :
Bilir, Ahmet Çağrı Marsis External Fire Fighting Systems Co. Research & Development Department, Istanbul, Turkey , Doğrul, Ali Dept. of Naval Architecture and Marine Engineering - Yildiz Technical University, Istanbul, Turkey , Coşgun, Taner Dept. of Naval Architecture and Marine Engineering - Yildiz Technical University, Istanbul, Turkey , Yurtseven, Ahmet Dept. of Naval Architecture and Marine Engineering - Yildiz Technical University, Istanbul, Turkey , Vardar, Nurten Dept. of Naval Architecture and Marine Engineering - Yildiz Technical University, Istanbul, Turkey
Abstract :
In this study, flow inside the nozzles are investigated by means of finite volume method. Firstly, some analyses are carried out in 2-D in order to compare and validate the results with the experimental ones. Later, 3-D models are created to have different nozzle geometries. 3-D analyses are made and
outlet mass flow rates, velocities and reaction forces are calculated in the same inlet pressure level for different nozzle geometries. Two equation k-ω turbulence model is chosen as the turbulence model. At the end of this numerical study, the nozzle geometry with minimum reaction force and maximum
mass flow rate is determined thanks to computational fluid dynamics (CFD) based on finite volume method (FVM).
Keywords :
Nozzle , water jet , k-w turbulence model , CFD
