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Smokescreen generation model of explosive infrared smoke bombs

A technology for generating models and smoke bombs, applied in ammunition tests, warheads, ammunition, etc., can solve problems such as simulation, inability to obtain the explosion moment of smoke bombs and particle concentrations of different particle sizes, and affecting interference effects

Active Publication Date: 2019-06-11
BEIJING INST OF ENVIRONMENTAL FEATURES
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide an explosive infrared smoke diffusion model in view of the defect that the explosive smoke diffusion model in the prior art cannot obtain the simulation of the explosion moment of the smoke bomb and the particle concentration of different particle sizes, thereby affecting the research on the interference effect. Smoke screen generation model for smoke bombs

Method used

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  • Smokescreen generation model of explosive infrared smoke bombs
  • Smokescreen generation model of explosive infrared smoke bombs
  • Smokescreen generation model of explosive infrared smoke bombs

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specific Embodiment approach 1

[0029] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS 1. The present invention provides a smoke screen generation model of an explosive infrared smoke bomb. Figure 1 to Figure 3 shown, including:

[0030] The explosion diffusion model 100 is used to simulate the process of the combustion and explosion of the smoke bomb charge to form an explosive cloud smoke screen; and to determine the unburned smoke pieces in the diffusion process and their initial throwing speed; the explosion diffusion model 100 is for the smoke pieces to be thrown away Simulation of the process provides initial conditions;

[0031] A scattering combustion model 200 for simulating a process in which the unburned smoking flakes are burned and components are released to form a scattering smoke screen during the scattering process; and

[0032] The component superposition model 300 is used to construct a complete smoke screen state according to the explosion diffusion model and the ejection combustion mo...

specific Embodiment

[0057] The modeling process for red phosphorus-based explosive infrared smoke bombs to explode into smoke based on the present invention will be described in detail below:

[0058] Step 1: Modeling the initial physical field of the charge explosion: The unsteady compressible multi-component flow-diffusion model can be used to establish the initial flow field model of the charge explosion by combining the composition of the charge combustion products and the breakage conditions of the projectile to simulate the initial flow field model of the charge explosion. The formation and expansion process of the smoke field, and the flow field state that reaches the initial steady state is used as the initial flow field state.

[0059] Step 2: Modeling of the flying trajectory of a single smoking piece and the physical field of the smoke: Combined with the flying speed and combustion release products of a single smoking piece, a calculation model of the motion and smoke flow field of a si...

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Abstract

The invention relates to a smokescreen generation model of explosive infrared smoke bombs. The model comprises an explosion diffusion model used for simulating the process that an explosive cloud smokescreen is formed through smoke bomb charging combustion explosion, and determining non-burnt-out smoke formation pieces in the diffusion process and the throwing initial velocity, a throwing combustion model used for simulating the process that in the throwing process, the non-burnt-out smoke formation pieces are subjected to combustion and component releasing to form a throwing smokescreen, anda component overlaying model used for building a complete smokescreen state according to the explosion diffusion model and the throwing combustion model. The exploding cloud smokescreen formed at themoment of smoke bomb exploding, and concentration distribution of smoke particles with different grain diameters in the throwing smokescreen can be obtained, and the detailed physical field distribution data information is provided for infrared smoke bomb interference characteristic radiation transfer modeling.

Description

technical field [0001] The invention relates to the technical field of smoke screen generation of smoke bombs, in particular to a smoke screen generation model of explosive infrared smoke bombs. Background technique [0002] The process of infrared smoke bomb explosion is mainly used to describe the diffusion process of smoke bomb explosion products in the air. Modeling the diffusion process is an important basis for the research on the interference characteristics of infrared smoke bombs. [0003] At present, the models to describe the explosion-type smoke diffusion mainly include gradient theory model model and three-dimensional normal model model. These two models can obtain the spatiotemporal distribution of smoke concentration of smoke bombs. However, these two models have the following defects: 1) Only the diffusion process of smoke is considered, and the modeling of the moment of explosion of the smoke bomb is not involved; and the moment of explosion will generate s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F42B35/00F42B12/48
Inventor 朱希娟马静段然周越傅德彬
Owner BEIJING INST OF ENVIRONMENTAL FEATURES
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