Regensburg 2007 – scientific programme

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DY: Fachverband Dynamik und Statistische Physik

DY 24: Poster I

DY 24.53: Poster

Wednesday, March 28, 2007, 16:00–18:00, Poster D

Numerical simulation of the air flow through a pipe organ for the purpose of identification of sound anomalies — •Werner Jürgens and Markus Abel — UP Transfer GmbH an der Universität Potsdam, Am Neuen Palais 10, 14469 Potsdam

Some pipe organs exhibit an irregular pipe sound, which can partly be ascribed to perturbations in the air supply. However, the details of this process, which can involve multiple pipes, are insufficiently understood. In order to determine the nature and origin of the perturbations, the present investigation focuses on the wind chest of an organ. The wind chest is located below the pipes and supplies them with air.

The velocity and pressure distributions of the flow inside the wind chest are calculated numerically. By this means, it is possible to study how disturbances propagate inside the wind chest and how they affect the sound generated by the pipes.