CAJ | 학술논문

根据某商用车驾驶室的形状特征，设计了4款驾驶室导流罩方案，安装在商用车上进行整车空气动力特性的数值模拟，以得到减阻效果最好的导流罩方案，并总结其气动特性规律。在此基础上，重新设计了一款更加合理的导流罩，安装在整车上进行数值模拟，对其减阻性能进行分析。结果表明：初始设计的4款导流罩的减阻效果不一，有的反而增加了阻力，而根据导流罩流场特性重新设计的导流罩，引导车头气流平顺通过车身表面，减阻效果显著提高。
근거모상용차가사실적형상특정，설계료4관가사실도류조방안，안장재상용차상진행정차공기동력특성적수치모의，이득도감조효과최호적도류조방안，병총결기기동특성규률。재차기출상，중신설계료일관경가합리적도류조，안장재정차상진행수치모의，대기감조성능진행분석。결과표명：초시설계적4관도류조적감조효과불일，유적반이증가료조력，이근거도류조류장특성중신설계적도류조，인도차두기류평순통과차신표면，감조효과현저제고。
According to the shape feature of a commercial vehicle cab, four fairings are designed and in-stalled on vehicle to carry out aerodynamic numerical simulations with the best fairing found and the rule of aerody-namic characteristics summarized. Then based on this, a more reasonable fairing is designed and a similar simula-tion is conducted to analyze its drag reduction effect. The results show that 4 fairings preliminarily designed have different drag reduction effects, some in which even has adverse results, while the fairing finally designed based on fairing flow field features can guide the front air flow smoothly passing through body surface, so significantly enhance its drag reduction effects.