Flow algorithm for low β ratio throat-tap nozzle which can control the system configuration easily

JIANG Hao; XU Fuying; BAI Xinkui; CHANG Dongfeng; LI Xin; WANG Hao; HUANG Jiasi; LI Yang; ZHOU Yuanxiang; XIE Tian; YU Xinying

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Flow algorithm for low β ratio throat-tap nozzle which can control the system configuration easily

Thermal Power Generation Vol. 42, Issue 10, Pages: 123-126(2013)

更新时间：2025-09-28

- Flow algorithm for low β ratio throat-tap nozzle which can control the system configuration easily
- 作者机构：
  
  1. 西安热工研究院有限公司
  2. 华能平凉电厂
- 作者简介：
- 基金信息：
- DOI：
  CLC： TK313
- Published：2013
- 稿件说明：
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JIANG Hao, XU Fuying, BAI Xinkui, et al. Flow algorithm for low β ratio throat-tap nozzle which can control the system configuration easily[J]. Thermal Power Generation, 2013, 42(10): 123-126.
DOI：

JIANG Hao, XU Fuying, BAI Xinkui, et al. Flow algorithm for low β ratio throat-tap nozzle which can control the system configuration easily[J]. Thermal Power Generation, 2013, 42(10): 123-126. DOI：

摘要

以IAPWS-IF97工业用水和水蒸气公式为骨架

重新拟合出相对简单的水的密度及其动力粘度计算公式

该公式可满足水在全液态范围内的精度要求。本算法在简单计算公式的基础上

通过合理设定流出系数初值

避免大量迭代计算

仅2次计算即可得到准确结果

方便DCS等控制系统中的组态开发

并能将流量计算的误差控制在0.05%以内。

Abstract

According to the IAPWS-IF97 industrial water equation and steam equation

the relatively simple calculation formula for water density and dynamic viscosity was fitted again

which can meet the precision requirement of water with entire liquid state.By setting the initial value of discharge coefficient reasonably

this algorithm avoids a lot of complex iterative process

and can obtain the correct results with only 2 times calculation.The new flow algorithm is convenient for configuration development of control system like the DCS

and can control the flow calculation error within 0.05%.

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LI Heng1

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