Numerical Representation of the Operating Behavior of a Crossflow Friction Turbomachine
Corresponding Author
Julian Praß
Friedrich-Alexander-University Erlangen-Nuremberg, Institute for Factory Automation and Production Systems (FAPS), Fuerther Strasse 246b, 90429 Nuremberg, Germany
Friedrich-Alexander-University Erlangen-Nuremberg, Institute of Process Machinery and Engineering Systems (iPAT), Cauerstrasse 4, 91058 Nuremberg, Germany
Correspondence: Julian Praß ([email protected]), Friedrich-Alexander-University Erlangen-Nuremberg, Institute for Factory Automation and Production Systems (FAPS), Fuerther Strasse 246b, 90429 Nuremberg, Germany.Search for more papers by this authorJörg Riedel
Friedrich-Alexander-University Erlangen-Nuremberg, Institute of Process Machinery and Engineering Systems (iPAT), Cauerstrasse 4, 91058 Nuremberg, Germany
Search for more papers by this authorAndreas Renz
Friedrich-Alexander-University Erlangen-Nuremberg, Institute of Process Machinery and Engineering Systems (iPAT), Cauerstrasse 4, 91058 Nuremberg, Germany
Search for more papers by this authorJörg Franke
Friedrich-Alexander-University Erlangen-Nuremberg, Institute for Factory Automation and Production Systems (FAPS), Fuerther Strasse 246b, 90429 Nuremberg, Germany
Search for more papers by this authorStefan Becker
Friedrich-Alexander-University Erlangen-Nuremberg, Institute of Process Machinery and Engineering Systems (iPAT), Cauerstrasse 4, 91058 Nuremberg, Germany
Search for more papers by this authorCorresponding Author
Julian Praß
Friedrich-Alexander-University Erlangen-Nuremberg, Institute for Factory Automation and Production Systems (FAPS), Fuerther Strasse 246b, 90429 Nuremberg, Germany
Friedrich-Alexander-University Erlangen-Nuremberg, Institute of Process Machinery and Engineering Systems (iPAT), Cauerstrasse 4, 91058 Nuremberg, Germany
Correspondence: Julian Praß ([email protected]), Friedrich-Alexander-University Erlangen-Nuremberg, Institute for Factory Automation and Production Systems (FAPS), Fuerther Strasse 246b, 90429 Nuremberg, Germany.Search for more papers by this authorJörg Riedel
Friedrich-Alexander-University Erlangen-Nuremberg, Institute of Process Machinery and Engineering Systems (iPAT), Cauerstrasse 4, 91058 Nuremberg, Germany
Search for more papers by this authorAndreas Renz
Friedrich-Alexander-University Erlangen-Nuremberg, Institute of Process Machinery and Engineering Systems (iPAT), Cauerstrasse 4, 91058 Nuremberg, Germany
Search for more papers by this authorJörg Franke
Friedrich-Alexander-University Erlangen-Nuremberg, Institute for Factory Automation and Production Systems (FAPS), Fuerther Strasse 246b, 90429 Nuremberg, Germany
Search for more papers by this authorStefan Becker
Friedrich-Alexander-University Erlangen-Nuremberg, Institute of Process Machinery and Engineering Systems (iPAT), Cauerstrasse 4, 91058 Nuremberg, Germany
Search for more papers by this authorAbstract
Based on the Tesla-type turbomachinery principle of operation, a fan consisting of flat, round discs arranged in between two separate channels, which generate two air flows in opposite directions, is investigated. Simulations of a model with one disc as well as a five-channel model at different grids were performed. With almost unthrottled operation, secondary flows could be determined at velocity magnitudes of up to 20 % of the mean main flow velocity, with secondary currents reaching up to 50 % in throttled operation. Besides high dissipation and recirculation, these secondary currencies are found to be capable of reducing the overall efficiency of the system. Thus, topic of further investigations is the potential of increasing efficiency by means of straighteners and geometric adaptions.
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