三維機翼-平板接合面處所造成的馬蹄渦流場，是許多工程應用上會遇到的問題，由於馬蹄渦會造成不均勻尾流，進而產生噪音訊跡、或影響流場下游的工程應用(如裝推進器等)，因此渦流結構的發展與消彌都是工程應用上的重要議題。在本論文中，我們在機翼前方加上導流板(strake)，就此板的幾何形狀加以變化，以計算流體力學的方式進行流場的分析，冀圖對後續的流場發展帶來正面的效應，特別是對馬蹄渦的抑制能產生相當的作用。在研究上，我們採用Spalart-Allmaras的紊流模型，並與文獻中的實驗資料來做比較。我們發現：加裝適當的導流罩後，馬蹄渦能大幅度的減弱，流場的均勻度也能獲得適度的改善。

The horseshoe vortex due to a boundary-layer flow past a wing-body junction is common in engineering applications. The horseshoe vortex may result in vortical flow, non-uniform wake distribution, and noise signal and affect the efficiency of pro-pulsor. Therefore, the development and suppression of the horseshoe vortex structure are vital engineering issues. In the present study, we introduced a strake to the wing-body junction and conducted a computational parametric study of the strake surface on the development of horseshoe vortex and investigate the effects of suppressing the vortex. The Spalart-Allmaras turbulence model was employed in the computation. The results were examined and we found that the horseshoe vortex can be significantly reduced and the wake flow much more uniform.