Numerical method for predicting jet noise of single-nozzle carrier rocket
A technology for launch vehicles and numerical methods, applied in electrical digital data processing, special data processing applications, instruments, etc., can solve problems such as sabotage, rocket launch failure, endangering rocket launch safety, etc., and achieve low diffusion, good numerical accuracy, and reduced The effect of computing time
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[0060] combine figure 1 , a numerical method for predicting single-nozzle rocket jet noise, according to the steps in the above-mentioned specific implementation mode, comprises the following steps:
[0061] Step 1. Establish a three-dimensional model of a single-nozzle rocket;
[0062] combine figure 2 , the three-dimensional model includes rocket 1, nozzle 2 and diversion tank 3, and is modeled in 1:1 ratio with the actual engineering multi-nozzle rocket.
[0063] Step 2, using the partition structured grid method to divide the three-dimensional model into a grid;
[0064] combine image 3 , the geometric model is processed with partitioned structured grid, and the single nozzle rocket with diversion groove is divided into grids. The final total number of grids is about 3.7 million.
[0065] Step 3. Establish the mathematical model of the single-nozzle rocket jet flow field: use the anisotropic two-equation Cubic k-ε turbulence model to calculate the steady-state flow f...
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