Analysis of Water Transport inside a Plant Xylem Vessel with Pitted Thickening  

作　　者：Tianyu Xu Lixiang Zhang 

机构地区：[1]Faculty of Civil Engineering and Mechanics,Kunming University of Science and Technology,Kunming,650500,China

出　　处：《Fluid Dynamics & Materials Processing》2020年第3期525-536,共12页流体力学与材料加工（英文）

基　　金：supported by the National Natural Science Foundation of China(Grant Nos.51279071,51969009);the Foundation of the Ministry of Education of China for Ph.D candidates in University(Grant No.2013531413002).

摘　　要：In this article,computational fluid dynamics(CFD)are used to explore the dynamics of water transport inside the pitted thickening of a plant xylem vessel.A pitted thickening model combined with the Bernoulli equation is used to analyze the influence of various factors(namely,the inner diameter,thickening width,thickening height,thickening spacing,number of laps and adjacent pit axial rotation).The pressure drop and the flow resistance coefficient are the variable parameters for our analysis.The results show that these two parameters are proportional to the thickening height and thickening width,and inversely proportional to the inner diameter,thickening spacing and number of laps.Three different wall thickening structures of the vessel are compared and the pitted thickening vessel is shown to provide the largest structural flow resistance,the annular thickening vessel has the second largest resistance and the helical thickening vessel corresponds to the smallest resistance of the three structures.

关 键 词：Pitted thickening water transport Bernoulli equation pressure drop flow resistance coefficient 

分 类 号：O35[理学—流体力学]