无因次特性(线),无量纲特性;
Based on the thermodynamic principle, this paper analyses the thermodynamic energy performance of air flow in tube on both conditions of equal wall heat flux and equal wall temperature, and presents dimensionless equations to express the thermodynamic energy performance.
本文依据热力学原理,对管内空气流动传热过程,进行热力学性能分析,提出热力学能量特性准则方程。
On the basis of least square and law of similarity of ventilator, the dimensionless performance curve equations of mine ventilator by operating data are fitted and the characteristic curve equation of mine ventilating network according to its characteristic factors is constructed.
本文运用最小二乘法和通风机的相似定律,用实测数据拟合了矿井通风机无因次性能曲线方程;
The performance of fin comprehensively by using dimensionless factor j/ f1/ 3 was evaluated and optimized respectively.
采用无量纲因子j/f1/3归对翅片的性能进行综合评价,并对其进行优化。
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