An entropy generation based thermodynamic analysis was conducted of the internal flows in circular and flat tubes.
对圆管和扁管内部流动进行了以熵产生为基础的热力学分析。
In this paper the thermal drag and entropy generation of a heated pipe flow are analysed by means of numerical computation.
本文利用数值计算方法,对圆管加热流动的热阻力和熵产进行了综合分析研究。
Thermodynamic optimization of insulation for pipe like surface based on entropy generation analysis is given in this paper.
基于熵产分析,时管状表面绝热层进行热力学优化。
The effects of the heat flux, wall temperature and flow resistance on the nondimensional entropy generation density have been discussed.
讨论了壁面热流、壁面温度及流动阻力对无因次熵产强度的影响。
The results of numerical analysis show that there exist relevant relations between the thermal drag and entropy generation of the heated flow.
数值分析结果表明,加热流动中的热阻力与熵产二者之间存在着对应相关的关系。
At present, entropy generation minimization and potential capacity dissipation extremum are the two principles to value heat transfer performance.
目前对传热效果的评价存在熵产最小化和势容耗散取得极值两种不同的准测。
Based on thermodynamic principles, entropy generation and exergy loss of BFG (Blast Furnace Gas) and COG (Coke Oven Gas) during mixing were studied.
从热力学原理出发,研究了高、焦炉煤气混合过程的熵增加和损失。
The irreversibility of heat transfer and fluid flow in regenerative he at exchanger was analyzed, and the number of entropy generation units was introduced.
分析了蓄热式热交换器传热和流动过程的不可逆性,提出了熵产数的概念。
Having found the velocity and the temperature distribution, the second law of thermodynamics was invoked to find the local and average entropy generation rate.
求解速度和温度分布时,利用热力学第二定律求解了局部平均熵产率。
So it represents not only a compromise between the power output and the entropy generation rate but also one between the power output and the thermal efficiency.
因此,生态学目标函数不仅反映了输出功率和熵产率之间的最佳折衷,而且反映了输出功率和热效率之间的最佳折衷。
Taking the entropy generation number of a multi-backpressure condenser as the target function, the optimum structure of a multi-backpressure condenser has been obtained.
以多背压凝汽器的熵产生数为目标函数,得出了多背压凝汽器的最优结构。
Thermodynamics performance of three kinds of ripple plate surfaces in view of entropy generation is compared on the basis of numeral results, and some conclusions are obtained.
在熵产分析的基础上比较了它们热力学性能的优劣,总结发现了一些规律性的结论。
The numerical and analytic results show that the heat transfer rate obtained by potential capacity dissipation minimization is better than that by entropy generation minimization.
数值计算和理论分析的结果表明,根据最小传递势容耗散原理得到的结果优于最小熵产原理得到的结果。
An entropy generation analysis method based on the second law of thermodynamics was used to component level optimization design of aircraft environmental control system in this paper.
一种以热力学第二定律为基础的熵产分析方法,应用于飞机环境控制系统的部件级优化设计。
The entropy generation and the exergy loss vary similarily with the change of mixing ratio, they first increased then decreased and both reached a maximum at a fraction of COG around 48%.
随着混合比例的增加,混合熵增加和损的变化规律相同,即先增大再减小,且在焦炉煤气体积分数约为48%处达到极大熵增加和损。
In addition, by evaluating the entropy increase and entropy generation in the turbine stage, the unsteady losses are investigated quantitatively, which leads to some significant conclusions.
另外,通过计算涡轮级中的熵增和熵产,定量地分析了端区非定常相互作用产生的损失,并得到了一些有意义的结论。
The optimization of the ecological function makes the entropy generation rate of cycle decrease greatly and the thermal efficiency increase with the cost of a little decreasing of the power output.
生态学优化以牺牲小部分输出功率为代价,较大地降低了循环的熵产率,而且在一定程度上提高了热机效率。
Virtualization might have flawed mechanisms for tapping that entropy source, or hav-ing several VMEs on the same host might exhaust the available entropy, leading to weak random number generation.
虚拟化可能在利用这样的信息源上存在缺陷,或者说在同一台主机上容纳多个虚拟机运行环境可能会穷尽可用的信息源,导致薄弱的随机数生成机制。
Virtualization might have flawed mechanisms for tapping that entropy source, or hav-ing several VMEs on the same host might exhaust the available entropy, leading to weak random number generation.
虚拟化可能在利用这样的信息源上存在缺陷,或者说在同一台主机上容纳多个虚拟机运行环境可能会穷尽可用的信息源,导致薄弱的随机数生成机制。
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