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| 1 | Investigation of model development for deterministic correlations associated with impeller-diffuser interactions in centrifugal compressors显示文摘The average-passage equation system(APES)provides a rigorous framework to account for the deterministic unsteady effects by the so-called deterministic correlations(DC),which include both deterministic stress correlations(DCS)and deterministic total enthalpy correlations(DCH).These correlations should be modeled to close the system of equations.In this paper,the distribution of DC in a transonic centrifugal compressor is presented,and its relative importance is revealed.The assumption made by Adamczyk that the pure unsteady fluctuation is significantly smaller than the spatial fluctuation is verified at the impeller-diffuser interface.The decomposition of DCH is also discussed to determine its two different physical mechanisms.Finally,the transport equations in terms of DCS in cylindrical coordinates are derived,and the terms are evaluated to determine the ones that are necessary to model.All these analyses significantly contribute to our model development for DC in centrifugal compressors. | LIU BaoJie ZHANGBo LIU YangWei | 2015 | Science China(Technological Sciences)2015，58，3： | 5 |
| 2 | 天然气制备亚氨基二乙腈余热利用节能改造显示文摘由于亚氨基二乙腈反应过程中会释放大量热量,同时也需要大量冷源对于反应后产物进行急速降温。针对目前释放热量未得到充分利用,导致能源浪费的现象。以国内某化工企业为例,通过数据分析与计算得出企业实际的能源消费总量、消费结构及能源流向;并通过与国内外天然气制亚氨基二乙腈同类企业的产量和能耗比较,找出该企业在工艺技术水平和能耗指标方面的差距;然后针对企业实际生产系统,对其能源消耗情况和节能潜力进行了分析计算,由此制定余热系统节能改造方案,通过使用溴化锂制冷机替代原有氨制冷机,不仅合理利用原放空的反应热量,同时节约了大量的电力消耗。 | 武斌 | 2020 | 能源研究与管理2020，，2： | 1 |
| 3 | New advances in monitoring and triggering of mechanical ventilation显示文摘Mechanical ventilation has been widely used in intensive care unit(ICU)to provide adequate air exchange to patients with respiratory difficulty.It helps patients with a ventilator that presses air into patients’lungs at triggering time.As a key therapy in ICU,mechanical ventilation is of great significance in clinical research of respiratory treatment.For example,simulation research of mechanical ventilation can be made through dynamics equations of pneumatic | SHI Yan ZHANG BoLun WANG ZeDan CAI MaoLin SHEN DongKai | 2016 | Science China(Technological Sciences)2016，59，11： | 1 |
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