Aviation arc fault damage simulation method based on Fluent software

An arc fault and damage simulation technology, applied in the field of simulation computing, can solve the problems of difficulty in reproducing experimental scenarios and high cost

Pending Publication Date: 2022-03-11
CIVIL AVIATION UNIV OF CHINA
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The research on aircraft arc damage is mostly carried out in the form of experiments, but th...

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  • Aviation arc fault damage simulation method based on Fluent software
  • Aviation arc fault damage simulation method based on Fluent software
  • Aviation arc fault damage simulation method based on Fluent software

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Embodiment Construction

[0022] specific implementation plan

[0023] Below in conjunction with accompanying drawing and specific embodiment mode, the present invention is described in further detail:

[0024] Such as Figure 1 to Figure 3 As shown, a kind of aviation arc fault damage simulation method based on Fluent software of the present invention comprises the following steps: (1) embodiment is the simulation calculation of the damage situation of aviation arc fault to aluminum plate structure when the current size is 300A. Confirm the size parameters of the place where the aviation arc occurs, including: arc length, cable diameter, aluminum plate thickness, distance between the arc and the aluminum plate; temperature and air pressure when the arc occurs. The length of the arc is 1mm, the diameter of the cable is 0.813mm, the thickness of the aluminum plate is 4mm, and the distance between the arc and the aluminum plate is 0.1mm (regarded as no interval).

[0025] (2) According to the size para...

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Abstract

The invention provides an aviation arc fault damage simulation method based on Fluent software, and the method comprises the steps: introducing a magnetohydrodynamic model on the basis of an incompressible flow K-epsilon turbulence model based on Fluent, importing a change relation between plasma physical parameters and temperature into a Fluent solver through a user-defined function, and carrying out the calculation of the change relation between the plasma physical parameters and the temperature. And the simulation calculation of the electric arc in Fluent can be realized. The method has the beneficial effects that the electric arc is simulated after parameters are initialized, the change of the electric characteristic and the temperature field characteristic of the electric arc along with time is obtained, and the damage volume of the surrounding parts after the electric arc is generated can be extracted through a calculation result due to the fact that energy generated after the electric arc is generated can damage the surrounding parts.

Description

technical field [0001] The invention relates to the technical field of analog computing, in particular to an aviation arc fault damage simulation method based on Fluent software. Background technique [0002] With the development of multi-electric and all-electric aircraft, the aviation electrical system is becoming more and more complex. Due to the particularity of the aircraft environment, for example, wiring harnesses located in high-temperature and high-vibration areas such as engine compartments may have poor contact and ablation and carbonization of insulation layers; Located in highly corrosive areas such as drainage areas, due to long-term salt spray erosion, the high insulation performance of the wire harness insulation layer is reduced. In these complex working environments, the probability of arc faults caused by cable failures will increase significantly, and the energy generated by arc faults will cause damage to surrounding components, seriously threatening the...

Claims

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Application Information

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IPC IPC(8): G06F30/15G06F30/20G06F111/10
CPCG06F30/15G06F30/20G06F2111/10
Inventor 石旭东刘沛颢陈业赵宏旭张浩天
Owner CIVIL AVIATION UNIV OF CHINA
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