A numerical simulation method and system for a fire in a power cabin of an urban comprehensive utility gallery

Abstract

The invention relates to a method and system for numerical simulation of fire in a power cabin of an urban comprehensive utility gallery. The method includes establishing a physical model of the power cabin of a comprehensive utility gallery including only internal cables, and initializing parameter information of the physical model; establishing a fire simulation based on the physical model Model, set multiple measuring points and set fire simulation model parameters; run the fire simulation model and calculate the preliminary fire numerical simulation results; optimize the preliminary fire numerical simulation results and obtain the optimized fire numerical simulation results. The present invention obtains the preliminary fire numerical simulation results by establishing the physical model of the power cabin of the integrated pipe gallery and the corresponding fire simulation model, and then uses the genetic optimization algorithm to optimize, obtains accurate fire numerical simulation results, and accurately perceives the occurrence of fire The spread law of fire smoke and the distribution of fire parameters in the power cabin of the comprehensive utility gallery provide a technical basis for the structural design of the power cabin of the comprehensive utility gallery and provide guidance for the escape of personnel in the utility gallery.

Description

technical field [0001] The invention relates to the technical field of urban comprehensive utility gallery, in particular to a numerical simulation method and system for a fire in a power cabin of an urban comprehensive utility gallery. Background technique [0002] With the further development of the social economy, the urban underground space has been further applied, and the urban comprehensive utility corridor is an extremely important infrastructure, which is crucial to the normal operation of the city. The comprehensive pipe gallery includes power cabin, gas cabin, thermal cabin, drainage cabin, comprehensive cabin, etc. The comprehensive pipe corridor is located in a closed and long underground space, and the cause of the fire accident is not easy to be found. Once a fire occurs, high-temperature smoke will be generated and quickly fill the entire fire protection zone. The risk of fire in the power cabin is the highest and the fire hazard is huge. Leakage, short circ...

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Problems solved by technology

In the prior art, most of the fire research in the electric cabin is a laboratory test, but the fire laboratory needs to build a large-scale experimental site and a complete electric cabin model and other related facilities, which also requires a lot of personnel and time, and is very dangerous. Moreover, in order to obtain real fire data, it is necessary to conduct multiple complex experiments for comparison, the experiments are difficult and the conditions are harsh

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