A dynamic temperature-pressure combination probe for measuring transonic three-dimensional unsteady flow field

Abstract

The invention belongs to the technical field of temperature and pressure tests, and discloses a dynamic temperature and pressure combination probe for measuring a transonic three-dimensional unsteady flow field. The dynamic temperature and pressure combination probe comprises a probe head part and a support rod, the probe head part is of a wedge top prism-shaped structure, a windward side comprises a wedge top slant plane, a front plane, a left side plane and a right side plane, a lee side is a cylindrical arc plane, and is internally encapsulated with four dynamic pressure sensors and one dynamic temperature sensor, the head of the temperature sensor exposes out of the wedge top slant plane, the windward side of the probe head is provided with four pressure sensing holes which are not mutually communicated with one another and are communicated with the four pressure sensors respectively, and sensor cables are led out of the probe tail through a channel in the support rod. Compared with an existing steady field testing probe, the dynamic temperature and pressure combination probe for measuring the transonic three-dimensional unsteady flow field is calibrated by a calibration wind tunnel, the change of a transonic inflow temperature, total pressure, static pressure, an deflection angle, a pitch angle, a Mach number and a three-dimensional speed along with time can be measured simultaneously, and a means is provided for turbine experiments to efficiently, accurately and comprehensively measure the transonic three-dimensional unsteady flow field.

Description

technical field [0001] The invention belongs to the technical field of temperature and pressure testing, and relates to a dynamic temperature and dynamic pressure measuring device for a transonic three-dimensional unsteady flow field, in particular to a dynamic temperature-pressure combination probe for measuring a transonic three-dimensional unsteady flow field, which is suitable for impellers Testing of mechanical inlet, outlet and interstage transonic three-dimensional dynamic flow fields. Background technique [0002] The combined distortion of dynamic temperature and dynamic pressure in the inlet flow field will seriously affect the aerodynamic performance of aeroengine compressors and fans, and even cause engine stall and surge. To study the influence of combined distortion of dynamic temperature and dynamic pressure, it is urgent to analyze the dynamic temperature and dynamic pressure. The transonic three-dimensional dynamic flow field of transonic compressor inlet, i...

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved in the present invention is: aiming at the problem of insufficient measurement means in the experimental research on the combined distortion of dynamic temperature and dynamic pressure, a dynamic temperature and pressure combination probe for measuring the transonic three-dimensional unsteady flow field is invented, which is compatible with the existing flow Compared with the field test probe, it can simultaneously measure the temperature, total pressure, static pressure, deflection angle, pitch angle, Mach number and three-dimensional velocity components of the transonic flow over time.

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