ANS-OB氧枪等温流场模拟研究同轴环状伴流流场模型实验

为考察ANS-OB氧枪工作中发生烧损时的喷流特性,在等温条件下对模拟氧枪的同轴环状喷流在枪端面齐平、有30°和45°角缺损,以及环流不供气等4 种情况下实测了时均速度和紊流度分布,得出了在端面有缺损时造成环周上动量通量分布不均衡,喷流将向一侧发生偏斜;在vao/vmo等于0.14的条件下,环状伴流对喷流的总流特性仍有较大影响;喷流的紊流度在有伴流时明显增强.     

配血用高分子材料的合成与表征

用烯丙基氯和二甲胺合成了烯丙基氯化铵 ,在引发剂引发下聚合成聚铵阳离子 ,用红外光谱和核磁共振对其结构进行表征。用所合成的高分子材料来检测血清中的不完全抗体IgG ,讨论了EDTA·Na2 浓度、聚铵阳离子浓度、红细胞浓度等对检测红细胞凝聚的影响。结果发现 ,该技术具有快速、简捷和灵敏度高等优点 ,其效果优于传统的方法而和凝聚方法相同。     

带自由面三维船体周围粘性流场的数值模拟

采用有限体积法通过求解不可压缩的雷诺平均(RANS)方程,数值模拟了包括兴波的三维船体周围的粘性流场,湍流模式使用了子网络尺度模式(SGS)和Baldwin-Lomax模式相结合的混合模式.对于自由表面的处理,应用了任意拉格朗日-欧拉方法,网格采用了不仅与物体表面贴体,而且与自由表面贴体的动网络,即随着自由表面的变化要不断重新划分网格.虽然此方法需要很长的计算时间,但能较好地描述船体的兴波情况.计算了系列60船模在Fn=0.316,Re=1.9×106时带自由面的粘性流场,计算结果与试验结果吻合较好.     

万家寨引黄连接段7号洞进口和出口梯形堰室内率定试验

对万家寨引黄连接段7号洞进口和出口梯形堰采用不同比例尺的模型进行了室内系统试验,利用最小二乘法和系列模型延伸法进行分析判别,最终推定实际尺寸超过规范规定的梯形量水堰的流量因数,对工程在实际运行量测中具有指导意义。     

斜进口流道滑阀稳态液动力的仿真与分析

采用斜进口流道,即进口流道轴线与阀芯轴线不垂直,对进口处的液流进行导流以提高进口处液流沿阀芯轴向方向的动量,从而达到减小滑阀液动力的目的.同时采用Fluent对进口流道轴线与阀芯轴线夹角不同的滑阀内部流场进行三维仿真分析,得到夹角不同的滑阀液动力变化特征和流量系数变化特征.对仿真结果进行分析,确定最优夹角为60°.     

遍历流的局部熵

定义了一种新的遍历流熵和局部熵,并证明在流无不动点时新的(局部)熵跟前人定义的熵是一致的,其结果是对遍历流复杂性的另一种等价刻画.     

Research on the Sports Dance Cultural Industry

Make use of the cultural heritage date method,combed the development grain and realistic tensions that the Korean street dance cultural character,elaborated the special charm of the Korean street dance cultural character from the angle of the "Korean flow" cultural formation,macro examined the modeling process of the Korean street dance cultural character,and analyzed the existent the theory substance of its actuality one by one with five aspects that construct the street dance cultural,thought the quintessence of the Korean street dance cultural character lie in.     

Constrained oscillation of a bubble subjected to shock wave in microvessel

A three-phase coupled model of the gas–liquid–solid oscillation system is established to analyze the oscillation characteristics of a bubble inside a micro blood vessel with various radii and its shape changes with different interface boundaries. The results show that unlike the spherical symmetric oscillation in an unbounded fluid, the oscillating bubble has significant asymmetric characteristics under the constraint of a flexible microvessel, especially while its radius reduces to the same order of magnitude as that of the bubble. Moreover, the variation of microbubble motion, whether the geometric shape or oscillation feature, exhibits obvious differences in the micro blood vessel compared with the rigid wall. The reasons behind these phenomena are analyzed in this paper. The conclusions have significant importance in the understanding of the mechanism of microvessel injury in ultrasound therapy.     

程序分片技术及应用

程序分片是一种分析和理解程序的技术。系统介绍程序分片的概念，计算方法及分片工具，应用领域，研究现状和发展趋势等方面的问题。