Simulation evaluation method and device for dust pollution of heavy truck

Abstract

The invention provides a simulation evaluation method and device for dust pollution of a heavy truck. The method comprises the following steps: establishing a geometric model for a selected heavy truck; the heavy truck area is simplified, and the vehicle external flow field area is constructed into a closed vehicle external flow field area; grid division is carried out on the heavy truck area and the vehicle external flow field area; constructing a discrete phase particle motion model for the vehicle external flow field area; simulating a vehicle driving state according to the geometric model, and establishing a heavy truck simulation model; and inputting preset working condition parameters into the heavy truck simulation model, and solving and outputting dust simulation data between two wheels of the truck. According to the invention, the dust pollution of the heavy truck can be quickly and intuitively simulated and analyzed, so that the structure of the heavy truck can be optimally designed.

Description

technical field [0001] The invention relates to the technical field of automobiles, in particular to a simulation evaluation method and device for dust pollution of heavy-duty trucks. Background technique [0002] The function of the engine cooling fan is to accelerate the air flow, improve the heat dissipation performance of the heat dissipation modules such as the radiator, condenser, and intercooler, and prevent the engine from overheating or overcooling. The space layout of the heavy-duty trucks prevents the wind from the fan from bypassing the engine in the axial direction. Instead, it rushes toward the engine and spreads around. The wind directly directed to the ground will cause dust and cause environmental particle dust pollution. At the same time, The raised dust adheres to the metal parts of the vehicle and can also rust the metal. Part of the dust is sucked into the fins of the radiator, causing the fins to block, reducing the heat dissipation efficiency of the co...

AI Technical Summary

Problems solved by technology

In order to overcome greater system resistance and take more heat away in a limited space, it is necessary to increase the fan diameter or increase the fan speed to increase the cooling air flow, but this further exacerbates the problem of vehicle dust pollution

[0004] At present, the analysis of vehicle dust is mainly concentrated in the field of passenger car body dust pollution, lacking the analysis of large vehicles such as trucks, and mainly using manual actual vehicle testing methods. Due to the limitation of resources such as prototype vehicles, the experiment is relatively difficult. The test costs are high and the test cycle is long, which is not conducive to design changes. At the same time, manual inspection makes the accuracy of vehicle dust analysis low, which cannot provide users with reliable design basis

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