| Simulation and Optimization of Side Window Water Pollution in Commercial Vehicles Based on Smooth Particle Hydrodynamics |
| Rongjiang Tang1, Huayi Gui1, Qinwen Xiao1, Tengfei Yuan1, Haifeng Yan1, Ke Li2 |
1School of Mechanical and Electrical Engineering, GUET, Guilin, 541004, China
2Dong Feng Liuzhou Automobile Co., Ltd, Liuzhou, 545005, China |
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Received: May 19, 2025; Revised: June 25, 2025 Accepted: July 1, 2025. Published online: July 22, 2025. |
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| ABSTRACT |
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To reduce the water pollution area on the side windows of medium and large commercial vehicles during rain and improve their safety performance, this paper takes a certain medium and large commercial vehicle as the research object. The vehicle dynamics model and side window rainwater pollution simulation model are established using STAR CCM + and AVL-Preonlab, respectively. Based on the Smooth Particle Hydrodynamics (SPH) theory, the side window water pollution is simulated. The A-pillar and rearview mirror are the main optimization targets. By using a combination of quadratic regression orthogonal design and surface response analysis, the optimal values for the A-pillar and rearview mirror are determined and combined. After the combined optimization, the liquid film thickness in the key vision area of the side window decreased by 75.3%, and the proportion of wet wall area in the key region decreased by 46%. |
| Key Words:
Rainwater pollution from side windows · Smooth particle hydrodynamics · Center portfolio design · Response surface |
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Corresponding Author.
Ke Li , Email. 
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