Computational Fluid Dynamics Based Parameter Estimation of Hot and Cool Water Mixture Control System

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Computational Fluid Dynamics Based Parameter Estimation of Hot and Cool Water Mixture Control System

更新时间：2025-07-09

- Computational Fluid Dynamics Based Parameter Estimation of Hot and Cool Water Mixture Control System
- Vol. 42, Issue 11, Pages: 1398-1401(2008)
- 作者机构：
  
  西安交通大学能源与动力工程学院,西安,710049
- 作者简介：
- 基金信息：
- DOI：
  CLC： TP271;TP273
- Online First：10 November 2008，
  
  Published：2008
- 稿件说明：
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Computational Fluid Dynamics Based Parameter Estimation of Hot and Cool Water Mixture Control System[J]. 2008, 42(11): 1398-1401.
DOI：

Computational Fluid Dynamics Based Parameter Estimation of Hot and Cool Water Mixture Control System[J]. 2008, 42(11): 1398-1401. DOI：

摘要

采用基于计算流体力学(CFD)的系统辨识方法

对冷热水混合器出水温度控制系统进行了建模.结合CFD技术与系统辨识理论

将递推参数估计算法嵌入CFD数值模拟软件FLUENT中

实现了基于CFD的“虚拟”控制系统的在线参数估计.结果表明:该方法利用CFD模拟被控对象

不受物理实验限制

可以有效地估计控制系统参数; 用计算模拟时间步长决定采样时间

而数值模拟实际计算时间对参数估计的实时性没有影响

即参数估计相对于被模拟的控制对象永远是实时的; 特别是针对流体流动过程的系统建模

该方法是一种可行的选择.

Abstract

A computational fluid dynamics(CFD)based system identification approach was used to model the outlet water temperature control system of a hot and cool water mixture bank. A recursive square method for parameter estimation was embedded in the commercial CFD software

FLUENT

for on-line parameter estimation of the virtual control system. The result shows that the method proposed can estimate the parameters of the control system without the limitation of physical experiments

the sample time is determined by the time step while the computation time of CFD does not influence the real-time performance of parameter estimation. The present approach is viable for controlled systems involving fluid flow and heat transfer.

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references

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