Conde, JoséReis, António João Ferreira2013-06-252013-06-252013http://hdl.handle.net/10362/9930Dissertação para obtenção do Grau de Mestre em Engenharia MecânicaA transonic density based solver implemented in OpenFOAM is shown to be robust and presents consistent results, when simulating three dimensional viscid ows in a low pressure compressor. Towards the validation of the code above, the NASA Rotor 67 geometry has been tested in di erent mesh levels, with and without tip-gap, with grid independence being suggested. It is used an odd approach in turbomachinery, to compare experimental with numerical data: BIAS, Root Mean Square Error and Concordance Index compare results in pitch-wise and stream-wise directions, provided a linear interpolation to correct all data. Several Riemann problems are simulated to test the shock resolution and entropy conditions due to the transonic nature of the Rotor 67 ow. Finally, a full compressor stage is assembled with the Mixing Plane method and a solution to the multi-row problem is achieved, increasing the reliability of OpenFOAM libraries.engmaster thesis