Gas-thermal-elastic coupling calculation method for water-spraying cooling axial turbine of partial air inlet structure

Abstract

The invention discloses a gas thermal elastic coupling calculation method for a water spray cooling axial turbine of a partial air inlet structure, and the aerodynamic performance and stress strain of the turbine influenced by the deformation of a wheel disc are obtained through modeling, grid division of a model and data simulation analysis. Visual data support is provided for the performance of the water spray cooling turbine, the influence of an air inlet structure of an underwater turbine part on turbine gas thermal elastic coupling simulation can be well solved, and the reliability of a turbine disc under water spray cooling can be judged.

Description

technical field [0001] The invention belongs to the technical field of engineering thermodynamics, and particularly relates to a gas-thermo-elastic coupling calculation method for a water-spray cooling axial turbine of a partial air intake structure. Background technique [0002] At present, the performance of submarines and surface ships serving in navies around the world has been greatly improved, especially the speed has been greatly improved. In order to meet the needs of future naval battles, torpedoes used for anti-submarine and anti-ship urgently need to increase their speed, range and range. deep, so there is an urgent need to improve the performance of the torpedo power propulsion system. The thermal power system using the turbine has the advantages of high specific power, small size, low maintenance cost and long life cycle. Therefore, when the power of the power propulsion system reaches thousands of kilowatts, the first choice for the engine of the torpedo power ...

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Problems solved by technology

Different from the full-circumference intake turbine, the flow process of the underwater turbine with a partial intake structure has strong transient characteristics. To accurately use the simulation method to predict the temperature of the disk, the rotation effect must be considered in the calculation. The thermoelastic coupling simulation calculation method is not suitable for the underwater part of the intake turbine during the solution process, and the calculation results often do not consider the rotation effect, which deviates greatly from the actual situation. However, the temperature field and stress field of the part of the intake turbine are solved correctly Whether it directly determines the safe and stable operation of the turbine, so a high-precision, low-cost numerical simulation method is needed to simulate the gas-thermoelastic coupling process of part of the intake turbine under water spray cooling to obtain the performance of the water spray cooling turbine

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