Turbo-engines with known performances reaching the end of their useful flying life can become useful assets in the execution of industrial projects. One such project reported in this paper is to install a high capacity complex device which will clear out the water in cases of floods. The partnership created in order to accomplish the task includes specialists in energetic, turbo-machinery, amelioration, hydraulic and action logistics fields and is aiming to acquire knowledge, results and experience and to transfer the information to economic and social environment. The TV2-117A turbo-shaft is the main component of the power group representing the energy source of the installation. It is connected to a reducer gear-box and a high capacity water pump. Considering the purpose of the installation to be realised, a device destined to handle natural calamities effects, the solution must fulfil several very important conditions: mobility, power and reliability. Being known the fact that moving elements have lower reliability conducts to the idea of an oil cooling system without mechanical or electrical driven fans. This is possible through using the ejection effect in a system based on the exhausted hot gases from the turbo-engine. The ejection device is a tubular structure using three concentric tubes on the outlet. The central one absorbs the hot gases and drives the cool air from the surrounding environment through the other two to accomplish both the oil and turbo-engine box cooling. The numerical analysis, using a CFD code, is still in progress and the paper presents intermediate results. The CFD conditions were imposed by the turbo-engine experimental data obtained in previous tests and the known working conditions established for the device to be created. The preliminary results helped to eliminate many flow problems caused by geometric dimensions and to establish the necessary adjustments in order to obtain the expected mass flow and speed values for the cooling devices. The adjustments on the geometry consisted in modifying the lengths, the bending and the diameters of the tubes. The final and most suitable geometry is still to be determined using the CFD code.

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