concentric annulus 中文意思是什麼
concentric annulus
解釋
同心環管芯- concentric : adj. 同心的，同軸的 （with）; 集中的，會聚的。 be concentric with 與…同心。adv. -ally ,-ity n.
- annulus : n. （pl. -li , annuluses）1. 環（帶），環節，環輪。2. 【動物；動物學】體環；菌環。3. 【天文學】環食帶。4. 【數學】圓環域。
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Concentric jacket pipe surrounded the test condenser. steam was generated in the boiler, flowed upward to the inlet of connection pipes, then flowed downward into the condenser tube, the cooling water flowed countercurrently through the annulus. the experiment covered the range of the pressure 1. 0 ~ 3. 0bar, heating power 2. 0 ~ 15. 0kw, steam mass flow rate 0. 001 ~ 0. 004kg / s, air mass flow rate 0. 0 ~ 0. 00163kg / s, and cooling water temperature 20 - 60 ?
在系統壓力為0 . 1 0 . 3mpa ，加熱功率為2 15kw ，蒸汽質量流量為0 . 001 0 . 004kg s ，空氣質量流量為0 . 0 0 . 00163kg s ，二次側冷卻水溫度20 60的范圍內，系統研究了豎直下降管內含有空氣的蒸汽冷凝特性，獲得了不同壓力、不同空氣含量和不同加熱功率下，冷凝段的溫度分佈和局部熱流密度的數據。 -
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
根據團狀流及環狀流的流動特性，並考慮同心環形管的結構特徵，建立了垂直同心環形管上升氣液團狀流向環狀流轉換的新的理論模型。 -
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
摘要針對非牛頓流體的穩定性問題及其流態判別的研究，將整體穩定性理論及局部穩定性理論應用於塑性流體和冪律流體在同心環空的流動中，建立和推導出相對應的判別流動狀態的穩定性參數表達式。
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