Experiment device for researching jet atomizing characteristic of jet nozzle

Abstract

The invention provides an experiment device for researching the jet atomizing characteristic of a jet nozzle. The experiment device can provide a fuel gas environment similar to a fuel gas-vapor type launch power device, simulate the pressure intensity, the temperature, the speed and other parameters of airflow behind the jet nozzle, provide various test interfaces including a conventional test means and a non-contact test means; and in addition, the experiment device can obtain the jet atomizing characteristic of a jet nozzle for the researches on primary atomizing of cooling water at the outlet of the jet nozzle, secondary atomizing and vaporizing of the cooling water in lateral high-speed flue gas flow, water-vapor two phase flow with phase changes and other complicated flowing processes in the fuel gas-vapor type launch power device used for underwater launch, and provide a theoretical basis for the design of the fuel gas-vapor type launch power device.

Description

technical field [0001] The invention relates to an experimental device, in particular to an experimental device for studying the atomization characteristics of spray nozzles. Background technique [0002] In the gas-steam launch power plant launched underwater, there is a turbulent flow of high-temperature and high-pressure gas to form a cooling water jet. The cooling water jet is atomized at the outlet of the nozzle and secondary atomized and vaporized in the horizontal high-speed gas flow. , complex flow processes such as water and steam two-phase flow with phase transitions. The secondary atomization and vaporization of the cooling water injected by the nozzle in the horizontal high-speed gas flow and the phase change process have an important impact on the energy characteristics and external work ability of the gas-steam launch power plant. [0003] At present, the methods for studying the secondary atomization and vaporization of the cooling water injected by the nozzl...

AI Technical Summary

Problems solved by technology

Among them, the experimental research under low-speed and low-temperature conditions cannot simulate the working environment of the nozzle of the gas-steam launch power plant, and most of them are carried out for a single nozzle; the experimental research using the supercombustion test bench can provide supersonic cross-flow with a certain combustion temperature. environment, but the temperature and pressure of the cross-flow are much lower than those of the gas-steam launch power plant, and it is wasteful and inconvenient to simply study the nozzle injection atomization characteristics using the super-combustion test bench

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