Simulation analysis method for analyzing water removal performance of air inlet system based on CFD technology
A technology of air intake system and simulation analysis, which is applied in the field of computational fluid dynamics, can solve problems such as cumbersome, complex simulation analysis process, high technical background and English proficiency requirements for engineering and technical personnel, and achieve simple and fast operation, convenient format conversion, and economical Simulate the effect of analysis time
Inactive Publication Date: 2020-10-16
LIUZHOU VOCATIONAL & TECHN COLLEGE
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Problems solved by technology
[0004] At present, there is no domestic invention patent for optimizing the air intake system of commercial vehicles based on CFD technology. However, within the automotive design-related companies, there are phenomena of optimizing the air intake system of commercial vehicles based on CFD technology, but all involve the use of complex full English FLUENT Or Star CD and other software to solve, the pre-processing needs a special network planning software, such as GAMBIT and the post-processing needs to use a special software, such as Tecplot, so the simulation analysis process is very complicated and cumbersome. Technical background and English proficiency requirements are extremely high
Moreover, the application of these CFD technologies does not involve how to use an intuitive, simple, convenient and fast software to efficiently simulate the water removal performance of the commercial vehicle intake system in order to optimize the shape and structure of the intake system
Method used
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Embodiment 1
[0069] In the technical solution of the present invention, STAR-CCM+ is used to perform computational fluid dynamics (CFD) analysis on a typical commercial vehicle intake system, and through CFD simulation, the velocity uniformity, pressure slice cloud map, The cloud image of raindrop flow and the mass flow rate of the liquid phase at the outlet can be used to calculate the water removal efficiency, and the structure optimization design of the intake system can be guided according to the water removal efficiency.
[0070] This implementation uses the professional computational fluid dynamics (CFD) analysis software STAR-CCM+ to numerically simulate the process of airflow passing through a typical commercial vehicle intake system, and applies the "porous media" function to complex air filters.
[0071] In this implementation, two physical models have been defined successively, and the "resistance resistance analysis" and "water removal performance analysis" have been carried out...
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The invention discloses a simulation analysis method for analyzing the water removal performance of an air inlet system based on a CFD technology, and the method comprises the following steps: carrying out the CFD pretreatment based on a to-be-treated air inlet system; based on a CFD pretreatment result, solving CFD resistance analysis; carrying out CFD resistance analysis on the basis of a CFD resistance analysis solving result; based on a CFD pretreatment result, carrying out CFD dehydration analysis and solving; and performing CFD water removal analysis based on a CFD water removal analysissolving result. Therefore, the defects of complex operation process, small application range and low reliability in the prior art can be overcome, and the advantages of simple operation process, wideapplication range and high reliability are realized.
Description
technical field [0001] The invention relates to the technical field of computational fluid dynamics (Computational Fluid Dynamics, referred to as CFD), in particular to a simulation analysis method for analyzing the water removal performance of an intake system based on CFD technology. Background technique [0002] The function of the commercial vehicle air intake system is to provide the engine with a clean, dry, and sufficient source of air within an acceptable temperature range. If the resistance of the air intake system is too large and exceeds a certain limit, it will lead to insufficient power and high energy consumption of the vehicle; air resistance; on the other hand, direct entry of water molecules into the engine will result in a drop in power and increased wear and tear on the engine. Using CFD software to analyze the water removal of the intake system plays an important role in guiding the design of the intake system. [0003] Inlet dewatering is carried out t...
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IPC IPC(8): G06F30/28G06T17/00G06F111/10G06F113/08G06F119/14
CPCG06T17/00G06F30/28G06F2111/10G06F2113/08G06F2119/14
Inventor 陈璟肖飞徐承李东恒
Owner LIUZHOU VOCATIONAL & TECHN COLLEGE