Turbo-genius™ Simulation Tool - Simulation Software
Being aware of the importance of simulation tools, TURBOMED S.A. has cooperated with the National Technical University of Athens (NTUA), in a joint effort to develop a Greek software program that reproduces the compressor-turbine maps and studies the matching between the turbocharger (T/C) and the ship’s engine. After many years of research, our corporation and the National Technical University of Athens are able to present the Turbo-genius™ software. This simulation tool models both the turbocharger, and the diesel engine, allowing thus, the evaluation of the matching between the engine and the turbocharger (T/C). Furthermore, the Turbo-genius™ software evaluates the performance of the turbocharger and compares the final results with the expected values of the shop/sea trials and the performance reports.
Turbo-genius™ - Simulation of a turbocharger-engine (D/G - T/C) system
The geometrical characteristics of the compressor are entered as data in the simulation model (hub radius, impeller tip diameter, backswept angle, variation of thickness of impeller vanes etc) and a map evaluation takes place. If the map is available, it is digitized and entered in the model of the compressor. The design of the compressor occurs from the aerodynamic requirements and the mechanical strength limits. The splitter vanes are designed in such a way, that they improve the airflow smoothness and prevent its detachment. Thus, the disturbances in the flow and the vibration problems are reduced.
The geometrical characteristics of the turbine are used as input data in the model for the evaluation of the turbine map. This model simulates the characteristics of the turbine’s operation and ensures the proper matching between the compressor and the turbine, so that the optimal and trouble-free operation is guaranteed. The turbine must withstand high temperatures, must be efficient in a wide range of mass flow and, finally, must be as reliable as possible.
The main parameters of the engine (bore, stroke, rpm, combustion rate, friction losses, heat losses) are used as input data in the model. If the data are adequate and if there is an available timeframe, a simulation of a sophisticated diesel model can be performed, that will evaluate the emission of pollutants.
All the aforementioned subsystems are simulated as one single system, in order to evaluate the performance of the engine as well as the matching between the turbocharger (T/C) and the engine. The evaluation of the proper matching between the engine and the turbocharger (T/C) depends on the type of the engine and its needs at its operating point (MCR). In general, the goal is to select a turbocharger (T/C), such that the operating line of the engine passes through the highest efficiency islands of the compressor map, having, at the same time, a safe distance from the surge line.