Rocket engine valve sealing performance index calculation method and device and electronic equipment

Abstract

The invention provides a rocket engine valve sealing performance index calculation method and device and electronic equipment, and relates to the technical field of spaceflight, and the method specifically comprises the steps: carrying out the structure preprocessing of a geometric model of a rocket engine valve; performing flow heat transfer simulation on the preprocessed geometric model of the rocket engine valve to obtain pressure distribution of a valve runner and temperature distribution of a valve solid domain when a propellant flows through the interior of the rocket engine valve; performing fluid-solid-thermal coupling finite element analysis on the preprocessed geometric model of the rocket engine valve, and obtaining the sealing specific pressure when the rocket engine valve is sealed based on the pressure distribution of a valve runner and the temperature distribution of a valve solid domain; and calculating the leakage rate of the rocket engine valve based on the sealing specific pressure. The leakage rate is calculated based on numerical simulation and a theoretical model, the leakage rate with high precision can be obtained, and the design cost is reduced.

Description

technical field [0001] The present application relates to the field of aerospace technology, and in particular to a method, device and electronic equipment for calculating the performance index of rocket engine valve sealing. Background technique [0002] In the existing rocket engine valve design, the design of valve sealing performance is generally estimated through empirical formulas in the design stage, and the sealing performance is tested through tests. , and iterate continuously until the requirements are met. [0003] At present, this method of using empirical formulas to estimate and then carry out experimental verification has too large errors, generally due to excessive sealing performance redundancy or insufficient sealing. The reason is that the empirical formulas are often based on certain assumptions, which will limit the use of the empirical formulas, and the applicability of the empirical formulas is not strong for different objects. On the other hand, usi...

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Problems solved by technology

[0003] At present, the error of this method of estimating using empirical formulas and then performing test checks is too large, generally because there are too many redundant seals or insufficient seals.

The reason is that empirical formulas are often based on certain assumptions, which will limit the use of empirical formulas, and the applicability of empirical formulas is not strong for different objects.

On the other hand, the cost of using the test method to check the valve sealing performance obtained by the empirical formula is relatively high.

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