...
首页> 外文期刊>Advances in decision sciences >On the heat impulse method for deducing sap flow
【24h】

On the heat impulse method for deducing sap flow

机译:关于推导树液流量的热脉冲方法

获取原文
           

摘要

Speed of sap flow in plants and trees is of interest to botanists and environmentalistsbecause of its connection with the rate of utilisation of nutrients in the soil. An established methoduses the transport of heat where an impulsive heat source is introduced along a radial line by aprobe in the trunk sapwood. The temperature is monitored, upstream and downstream, and, bysolving the heat flow equation in the moving fluid, the sap velocity may be deduced indirectlyunder some simplifying assumptions which chiefly render the method most useful when applied totrees of relatively large diameter. Transform methods are used to obtain the appropriate threedimensionaltime-dependent solution in explicit form and values for the resulting sap velocity arecompared with the existing two-dimensional theory.
机译:植物学家和环境保护主义者对植物和树木中汁液流动的速度很感兴趣,因为它与土壤中养分的利用率有关。一种既定的方法是利用热量的传输,其中沿树干的边材中的探针沿径向线引入脉冲热源。在上游和下游对温度进行监测,并且通过求解运动流体中的热流方程,可以在一些简化的假设下间接推导出树液速度,这主要使该方法在应用于直径较大的树时最有用。使用变换方法以显式形式获得适当的三维时间相关解,并将所得的树液速度值与现有的二维理论进行比较。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号