A Numerical Simulation Calculation Method for Aircraft Fire
A numerical simulation and calculation method technology, applied in CAD numerical modeling, design optimization/simulation, special data processing applications, etc., to achieve the effect of saving costs, avoiding danger and pollution
Active Publication Date: 2021-05-28
XIAN AIRCRAFT DESIGN INST OF AVIATION IND OF CHINA
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[0004] The object of the present invention is to provide a kind of aircraft fire numerical simulation calculation method, to at least solve at least one problem existing in the existing aircraft fire research method
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[0026] In order to make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be described in more detail below in conjunction with the drawings in the embodiments of the present invention. In the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The described embodiments are some, but not all, embodiments of the invention. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention. Embodiments of the present invention will be described in detail below ...
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The invention relates to aircraft safety performance design, in particular to an aircraft fire numerical simulation calculation method. The numerical simulation calculation method includes the steps of: simplifying the geometric model of the aircraft, and establishing a corresponding mathematical model; selecting constraints, wherein the constraints include: the position of the ignition point; the type, quantity and distribution of combustibles; the external environment; Carry out grid division for the mathematical model in step 1; according to the results of step 2 and step 3, and carry out simulation by turbulent combustion model method, thermal radiation model method and steam cloud explosion overpressure calculation TNT equivalent method, the aircraft occurrence Smoke field, temperature field and fuel vapor explosion during fire. In the aircraft fire numerical simulation calculation method of the invention, the simulation calculation can quickly obtain reliable data, provide guiding opinions on the impact and protection of aircraft fires, save costs, and avoid danger and pollution.
Description
technical field [0001] The invention relates to aircraft safety performance design, in particular to an aircraft fire numerical simulation calculation method. Background technique [0002] Considering that once a fire breaks out on an aircraft, it will cause a catastrophic accident if the fire cannot be effectively extinguished or the spread of the fire cannot be controlled. Therefore, in order to find out the fire data such as the temperature field distribution of the fire in different states and different fire extinguishing conditions of the aircraft, and provide design input for the high temperature protection of some important systems, it is necessary to carry out analysis and research on the aircraft fire situation. [0003] Most of the current aircraft fire research is laboratory experiments. However, this fire test is only for some areas of the aircraft (such as the engine compartment), and has not done a fire test for the whole machine; in addition, a large-scale fi...
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IPC IPC(8): G06F30/15G06F30/20G06F111/10
CPCG06F30/15G06F30/20
Inventor 王凯李玉芳刘康
Owner XIAN AIRCRAFT DESIGN INST OF AVIATION IND OF CHINA