annulus n. (pl. -li , annuluses) 1.環(huán)(帶),環(huán)節(jié),環(huán)輪。 2.【動(dòng)物;動(dòng)物學(xué)】體環(huán);菌環(huán)。 3.【天文學(xué)】環(huán)食帶。 4.【數(shù)學(xué)】圓環(huán)域。
concentric adj. 同心的,同軸的 (with); 集中的,會(huì)聚的。 be concentric with 與…同心。 adv. -ally ,-ity n.
Pressure drop of flow of pam aqueous solution in concentric annuli with isometric ring slots on the inner cylinder 聚丙烯酰胺水溶液在內(nèi)管帶有等距環(huán)槽的同心環(huán)空中流動(dòng)的壓降
In this paper , the transition from churn flow to annular flow for upward gas - liquid in vertical concentric annulus is studied and a transition model is developed by considering the structural feature of the concentric annulus and the flow characteristics for churn and annular flows in the concentric annulus 根據(jù)團(tuán)狀流及環(huán)狀流的流動(dòng)特性,并考慮同心環(huán)形管的結(jié)構(gòu)特徵,建立了垂直同心環(huán)形管上升氣液團(tuán)狀流向環(huán)狀流轉(zhuǎn)換的新的理論模型。
In order to study the stability of non - newtonian fluid and its flow pattern discrimination method , the integral stability theory and local stability theory are applied to the concentric annulus flowing of plastic fluid and power - law fluid , then a relevant stability parameter expression of discriminating flow pattern is derived and set up in the paper 摘要針對(duì)非牛頓流體的穩(wěn)定性問(wèn)題及其流態(tài)判別的研究,將整體穩(wěn)定性理論及局部穩(wěn)定性理論應(yīng)用于塑性流體和冪律流體在同心環(huán)空的流動(dòng)中,建立和推導(dǎo)出相對(duì)應(yīng)的判別流動(dòng)狀態(tài)的穩(wěn)定性參數(shù)表達(dá)式。