Influence of Flanks on Resistance Performance of High-Speed Amphibious Vehicle

In order to reduce the additional resistance of high-speed amphibious vehicles, Flanks are designed on concave grooves. As a new drag reduction attachment, principle is analyzed and discussed in detail. this paper, HSAV model coupling tests performed based Reynolds-averaged Navier–Stokes method SST k−ω model. The accuracy numerical approach verified by series towing tests. Results show that with fixed installation angle invariable characteristic parameters, can significantly total at high speed, maximum 16%. meantime, also affect attitude flow field vehicle, consequently affecting composition sailing condition. A vehicle self-propulsion test carried out, it qualitatively verifies effect speed.