In the twodimensional wind tunnel , systematic experimental researches were carried out on the phenomenon of reverse transition on a heated plane with stable density stratification 針對(duì)加熱平板表面密度分層結(jié)構(gòu)中的逆轉(zhuǎn)捩現(xiàn)象,在二元風(fēng)洞中進(jìn)行了系統(tǒng)的實(shí)驗(yàn)研究。
Some examples are given , showing that density stratification can have a large effect on the added mass and damping of the floating rectangular box in a two - layer fluid over a range of frequencies 對(duì)所建立的求解模型進(jìn)行了數(shù)值計(jì)算分析,結(jié)果表明在矩形箱浮體的某個(gè)振蕩頻率范圍內(nèi),流體的分層效應(yīng)對(duì)其附加質(zhì)量和阻尼系數(shù)有顯著影響的。
The results are compared with the cases in a single - layer fluid , showing that the density stratification can have a relative large effect on the drag and lift coefficients as well as the vortex shedding 計(jì)算受迫振蕩圓柱體的升力系數(shù)、阻力系數(shù)隨時(shí)間的演化曲線和圓柱體的尾渦分布,以及圓柱體的受迫振蕩激發(fā)兩層流體內(nèi)界面的擾動(dòng),并與均勻流體的情況進(jìn)行了比較分析。