CENTRIFUGAL COMPRESSOR COMPONENT CFD DESIGN AND ANALYSIS ON TURBOCHARGERS

• Main Author: Iqbal Firstantio, Muhammad
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/69878
• Institution: Institut Teknologi Bandung

The use of motorized vehicles has increased in the last ten years. Technology is needed that can be used to reduce fuel consumption by using forced induction components in internal combustion engines. One component of forced induction that is often used is the turbocharger. The component of the turbocharger that plays a direct role in the use of fuel is the centrifugal compressor. It is necessary to determine the geometric values of the impeller, diffuser, and volute that will be used to analyze the performance of the centrifugal compressor model. Determination of the theoretical value of geometry and simulation using the basic operating parameters of a centrifugal compressor on a turbocharger of 0.1 kg/s for the mass flow rate of the fluid with conditions at the compressor inlet set at 101,325 Pa and 298 K for the total inlet pressure and the total inlet temperature. For the condition at the compressor outlet, it is set at 151,998 Pa for the static pressure value. The working fluid used is air with ideal gas properties. Simulation and theoretical results produce various performance parameters such as efficiency values, pressure ratio values, temperature ratios, and compressor power. In the simulation, the efficiency is 85.64%, the temperature ratio is 1.2098, the pressure ratio is 1.426, and the power is 6.279 kW. The performance of the centrifugal compressor is also carried out through an off-design analysis. Changes in the performance of the centrifugal compressor were obtained with variations in the mass flow rate of the fluid used for the four parameters set.