HYDRODYNAMIC MODELING FOR OPTIMIZATION OF SUCTION PUMP GEOMETRY IN A CASE STUDY OF RAWA MALANG RESERVOIR, JAKARTA UTARA

• Main Author: Novianti Rahayu, Ananda
• Format: Theses
• Language: Indonesia
• Subjects: Teknik (Rekayasa, enjinering dan kegiatan berkaitan)
• Online Access: https://digilib.itb.ac.id/gdl/view/80062
• Institution: Institut Teknologi Bandung

The flooding problem that occurs in the Rawa Malang area is caused by the topographic condition of the area which is included in the lowlands, namely 1 m below sea level. Based on the DKI Jakarta Flood Control Master Plan which implements the Flood Control Master Plan prepared in 1973 by Nedeco, it states that areas with low surfaces are drained with a polder system consisting of embankments, reservoirs and pumps. The pump used in the Rawa Malang Reservoir is the Sumbersible Pump type. In optimizing the suction pump geometry, it is necessary to analyze the pump performance based on 3 main parameters, namely stream line, water level and profile pressure. These three parameters were analyzed using Ansys Fluent software with the Computational Fluid Dynamic method to obtain optimal suction pump geometry results. Based on Pump Intake Design in ANSI/HI 9.8-1998, there are two variations of suction pump geometry, namely straight and cone. Based on the research results, a comparison was obtained between the two pump model designs. For the 2.5 m3/s discharge blade design, HWL conditions produce a maximum speed value of 7,289 m/s, TDC value at the inlet of 3.37 m and outlet of 0.293 m, maximum pressure value of 46963.65 Pa. For the 5 m3/s discharge blade design, the HWL condition produces a maximum speed value of 14,783 m/s, a TDC value at the inlet of 3.37 m and an outlet of 0.383 m, a maximum pressure value of 111385.6 Pa. For the cone discharge design of 2.5 m3/s, HWL conditions produce a maximum velocity value of 7,197 m/s, TDC value at the inlet of 3.37 m and outlet of 0.310 m, maximum pressure value of 88036.98 Pa. For the cone discharge design of 5 m3/s, the HWL condition produces a maximum speed value of 7,197 m/s, a TDC value at the inlet of 3.37 m and an outlet of 0.310 m, a maximum pressure value of 88036.98 Pa. The CFD simulation results show the best performance results, namely 2 pumps with a cone design suction pump geometry model.