Flow measurement for a gas turbine engine
AssigneeVirginia Polytechnic Institute and State University
InventorsVasileios KYRITSIS, Kevin Todd LOWE, Maurice BRISTOW, Peter LOFTUS
Life of this patent
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Abstract
A method of thermodynamic assessment of flow through a turbomachine having a compressor, comprising: receiving sensor readings from a plurality of acoustic sensors located about an intake for the turbomachine upstream of the compressor; and receiving pressure and stagnation temperature readings for the flow into the intake. A static temperature is determined for the flow into the intake and an average velocity of the flow over a flow area of the intake upstream of the compressor using the acoustic sensor readings. A mass flow rate of the flow through the intake is determined using the average velocity of the flow and the stagnation pressure.
Claims16
A method of thermodynamic assessment of flow through a turbomachine having a compressor, the method comprising the steps of:
- receiving sensor readings from a plurality of acoustic sensors located about an intake for the turbomachine upstream of the compressor;
- receiving stagnation temperature readings for the flow into the intake;
- determining a static temperature for the flow into the intake and an average velocity of the flow over a flow area of the intake upstream of the compressor using the acoustic sensor readings;
- and
- outputting a flow rate of the flow through the intake using the determined average velocity of the flow.
A monitoring and/or control system for a turbomachine comprising a turbomachine intake upstream of a compressor, an engine core downstream of the compressor and a turbine driven by exhaust gas from the engine core, the monitoring and/or control system comprising:
- a plurality of acoustic sensors located about a flow area of the intake upstream of the compressor;
- and
- one or more processor arranged to receive sensor readings from the plurality of acoustic sensors and stagnation temperature readings for the flow into the intake;
- the one or more processor comprising machine readable instructions for determining a static temperature for the flow into the intake and an average velocity of the flow over the flow area of the intake using the acoustic sensor readings;
- and
- the one or more processor determining a flow rate of the flow through the intake using the determined average velocity of the flow.
Dependencies are inferred from the claim text.