The Analysis of Diameter Expansion and Connection Angle Variations Effects In Hyropower Penstock Pipe Bend on Pressure Drop Using Computational Fluid Dynamics Simulation. Vomek [Internet]. 2026 May 31 [cited 2026 Jun. 16];8(2):119-31. Available from: http://vomek.ppj.unp.ac.id/index.php/vomek/article/view/953