The birthplace of modern combustors, the Rijke tube, is considered in this paper. The findings of earlier investigations are used as the departure point, and a complementary analytical approach is introduced for predicting its thermoacoustic instability with experimental validations. In the core of the novel analytical work resides a unique mathematical tool that evolved only within the last decade. It is called the cluster treatment of characteristic roots paradigm, which uniquely reveals the stable operating regions for thermoacoustic instability in the space of the operational parameters, such as geometric dimensions or thermal parameters. For linearizable systems, these stability regions are declared exhaustively and nonconservatively. The experimental validation of this analytical approach is the primary contribution of the present paper. The main intention of this paper is to supplement the combustion science literature with the analytical capabilities of cluster treatment of characteristic roots.


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    Title :

    Predicting Thermoacoustic Instability: A Novel Analytical Approach and Its Experimental Validation


    Contributors:

    Published in:

    Publication date :

    2014-07-01




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English