water hammer phenomena meaning in Chinese
水锤现象
Examples
- The hemodynamic change induced by embolization of the cerebral arteriovenous malformation was analyzed using the water hammer principle . the highest pressure that can be reached when the water hammer phenomenon occurs was calculated . the acute instantaneous pressure rising may be an important factor leading to intracranial hemorrhage or swelling when the avm is embolized . it is shown that long feeding artery of avm will increase the possibility of direct water hammer , and high wall shear stress of feeding artery will increase the water hammer pressure . this suggests that such kind of avms should be embolized stepwise and the systemic pressure should be rationally reduced before embolization
以水击原理分析了脑avm栓塞治疗时血液动力学变化过程，计算了瞬时水击压力可能达到的最高值。瞬时增高的水击压力可能是avm栓塞时发生急性脑出血或脑肿胀的重要血液动力学因素。而avm供血动脉血管壁面切应力偏高和供血动脉过长可增加水击的危险程度，提示对这类结构avm栓塞治疗时应采取合理的降压措施并尽可能分多次栓塞。 - Corresponding to the correct water hammer mathematic model ( 3 ) , the character difference equation is by comparing the new mathematic model with the old mathematic model , the last calculative part of paper argues the falseness of the current water hammer mathematic model , makes use of the improved character line method to analyze the correct mathematic model ( 3 ) , studies all kinds of facts " impact on water hammer pressure value and water hammer phenomenon attenuation , points out that , in the long pipeline system , the subarea calculation of head loss along with flow rather influences the calculative results of water hammer pressure , advices to take the subarea calculation of head loss along with flow into account in the water hammer calculation of the long pipeline system
对应于正确的水击数学模型( 3 )的特征差分方程形式如下c ，弓+吼川一c ，唱一几弓扮几rv另卜川= o几代+吼川一几唱一吼嵘{一c :脚丸}唱} ? “本论文在最后的计算部分，通过对新老数学模型的数值计算比较，进一步论证了当前水击数学模型的不正确性。并且应用改善了的特征线法对正确的数学模型( 3 )进行了计算分析，研究了各种因素对水击压强值和水击现象衰减的影响，指出在长管道系统中，沿程水头损失的分区计算对水击压强的计算结果影响较大，建议在长管道系统的水击计算中应按分区进行沿程水头损失的计算。