n.環(huán)帶物(環(huán)形套筒；圓；圈)

The geometric models of eccentric annuli flow field were established in the computational fluid dynamics PHOENICS-VR. 摘要在流體計算軟件PHOENICS的VR編輯環(huán)境中，建立了偏心環(huán)空流場幾何模型。

More accurate calculation of pressure loss in narrow annuli of slim holes and coiled tubing operations is required. 在小眼井和連續(xù)油管作業(yè)的窄環(huán)空中，要求更加準確地計算摩擦壓降。

The velocity profile should be confirmed when non-Newtonian fluid flowing in duct and annuli is researched. 摘要在研究非牛頓流體圓管和環(huán)空管流層流流動問題時，確定其速度分布是關(guān)鍵。

The flowing state in narrow annuli changes apparently quicker than that in circular tube. 窄環(huán)隙流道內(nèi)流態(tài)由層流向紊流轉(zhuǎn)變明顯提前。

In addition, the decrease of the annuli gap will yield heat transfer deterioration during flowing in narrow annular channels. 此外，環(huán)縫間隙的減小將導(dǎo)致環(huán)形通道的換熱性能下降。