An engine thermodynamic cycle parameter analysis method and device

Abstract

The invention relates to the technical field of engines, and provides an engine thermodynamic cycle parameter analysis method and an engine thermodynamic cycle parameter analysis device. The engine thermodynamic cycle parameter analysis method comprises the following steps: establishing a parameter coupling relationship among all parts of an engine; calculating to obtain an initial thermodynamic cycle parameter selection range according to the parameter coupling relation; determining a strength limiting parameter of each part; and obtaining a target thermodynamic cycle parameter selection range according to the intensity limiting parameter and the initial thermodynamic cycle parameter selection range. According to the engine thermodynamic cycle parameter analysis method, parameters of allparts are mutually coupled, and the thermodynamic cycle parameter selection range obtained through drawing is more accurate; the structural strength limitation of components such as a compressor and aturbine is considered, the thermodynamic cycle parameter selection range is further narrowed, and the performance design reasonability of the turboshaft engine is improved; The number of iterations of the turboshaft engine performance design is effectively reduced, and the project development period is shortened.

Description

technical field [0001] The invention relates to the technical field of aeroengines, in particular to an engine thermodynamic cycle parameter analysis method and an engine thermodynamic cycle parameter analysis device. Background technique [0002] Turboshaft engine thermodynamic cycle parameters include intake total pressure loss, compressor pressure ratio, adiabatic efficiency, combustion chamber outlet temperature, total pressure loss, turbine efficiency and exhaust total pressure loss, etc. Thermodynamic cycle parameter selection is the first step in turboshaft engine performance design, which determines the final performance of turboshaft engine. [0003] In the prior art, the selection range of the engine thermodynamic cycle parameter analysis method is too large, and the rationality of the design is low. [0004] Therefore, it is necessary to design a new engine thermodynamic cycle parameter analysis method and engine thermodynamic cycle parameter analysis device. ...

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Problems solved by technology

[0006] The purpose of the present invention is to overcome the shortcomings of the above-mentioned prior art that the selection range is too large and the design rationality is low, and provide an engine thermodynamic cycle parameter analysis method and an engine thermodynamic cycle parameter analysis device with a suitable selection range and high design rationality

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