ABSTRACT
This paper presents an experimental and computational analysis of the flow behaviour of twin-entry turbines. The experimental data were measured in a gas stand specially designed for this kind of turbines, controlling the flow characteristics passing through each volute. The computational analysis is carried out by means of CFD simulations that were globally validated against experimental data. In full and unequal admission conditions, the flow passing through each volute does not fully mix with the other within the rotor, which can be exploited in reduced order turbine models, simulating them as two single entry turbines working in parallel.
