ISO 4359:2013 流量测量结构 矩形、梯形和Ｕ形测流槽

标准编号：ISO 4359:2013

中文名称：流量测量结构 矩形、梯形和Ｕ形测流槽

英文名称：Flow measurement structures — Rectangular, trapezoidal and U-shaped flumes

发布日期：2013-02

标准范围

ISO 4359:2013规定了在稳定或缓慢变化的流量条件下，使用特定类型的驻波或临界深度水槽测量河流和人工渠道流量的方法。已经开发了各种各样的水槽，但只考虑那些在充分研究和现场测试后得到普遍认可，因此不需要现场校准的水槽。考虑的水流条件仅取决于上游水头，即水槽上游必须存在亚临界流，之后水流通过收缩加速并通过其临界深度。结构物下游的水位足够低，不会对其性能产生影响。ISO 4359:2013适用于三种常用类型的水槽，涵盖了广泛的应用，即矩形喉道、梯形喉道和U形喉道。它不适用于文献中提到的水流始终处于亚临界状态的水槽形式（有时称为“文丘里”水槽）。

ISO 4359:2013 specifies methods for the measurement of flow in rivers and artificial channels under steady or slowly varying flow conditions, using certain types of standing-wave, or critical-depth, flumes.A wide variety of flumes has been developed, but only those which have received general acceptance after adequate research and field testing, and which therefore do not require in situ calibration, are considered.The flow conditions considered are uniquely dependent on the upstream head, i.e. subcritical flow must exist upstream of the flume, after which the flow accelerates through the contraction and passes through its critical depth. The water level downstream of the structure is low enough to have no influence upon its performance.ISO 4359:2013 is applicable to three commonly used types of flumes, covering a wide range of applications, namely rectangular-throated, trapezoidal-throated and U-throated.It is not applicable to a form of flume referred to in the literature (sometimes called a "Venturi" flume) in which the flow remains subcritical throughout.

标准预览图