Study on Effect of Neglecting Transient Terms of Momentum Equations on Simulation Models of Single Phase Heated Tubes

Authors

Yingwei Kang, 1. College of Automation Engineering, Shanghai University of Electric Power, Shanghai 200090, China; ;2. Shanghai Engineering Research Center of Intelligent Management and Control for Power Process, Shanghai 200090, China;
Yanan Wang, 1. College of Automation Engineering, Shanghai University of Electric Power, Shanghai 200090, China; ;2. Shanghai Engineering Research Center of Intelligent Management and Control for Power Process, Shanghai 200090, China;
Daogang Peng, 1. College of Automation Engineering, Shanghai University of Electric Power, Shanghai 200090, China; ;2. Shanghai Engineering Research Center of Intelligent Management and Control for Power Process, Shanghai 200090, China;
Pengyuan Zheng, 1. College of Automation Engineering, Shanghai University of Electric Power, Shanghai 200090, China; ;2. Shanghai Engineering Research Center of Intelligent Management and Control for Power Process, Shanghai 200090, China;
Yang Ping, 1. College of Automation Engineering, Shanghai University of Electric Power, Shanghai 200090, China; ;2. Shanghai Engineering Research Center of Intelligent Management and Control for Power Process, Shanghai 200090, China;

Abstract

Abstract: A model of single phase heated tubes was presented, based on which the effect of neglecting transient terms of momentum equations on model performance was investigated by simulating a heated tube of the superheater of a power plant boiler. It is found that neglecting the transient terms of momentum equations can significantly decrease the dynamic accuracy of the model; under various step disturbances, neglecting the transient terms of momentum equations can speed up the dynamic response of the enthalpy-temperature channel of the model nearly 4 times; under the step disturbance of the inlet steam flux, neglecting the transient terms of momentum equations can change the type of dynamic characteristics of the pressure-flow channel of the model; whereas the corresponding decrease of computational consuming time is less than 7%; moreover, the ability to keep numerically stable also decreases.

Recommended Citation

Kang, Yingwei; Wang, Yanan; Peng, Daogang; Zheng, Pengyuan; and Ping, Yang (2020) "Study on Effect of Neglecting Transient Terms of Momentum Equations on Simulation Models of Single Phase Heated Tubes," Journal of System Simulation: Vol. 29: Iss. 5, Article 14.
DOI: 10.16182/j.issn1004731x.joss.201705014
Available at: https://dc-china-simulation.researchcommons.org/journal/vol29/iss5/14

First Page

1033

Revised Date

2015-09-24

DOI Link

https://doi.org/10.16182/j.issn1004731x.joss.201705014

Last Page

1040

CLC

TK223.3

Recommended Citation

Kang Yingwei, Wang Yanan, Peng Daogang, Zheng Pengyuan, Yang Ping. Study on Effect of Neglecting Transient Terms of Momentum Equations on Simulation Models of Single Phase Heated Tubes[J]. Journal of System Simulation, 2017, 29(5): 1033-1040.

DOI

10.16182/j.issn1004731x.joss.201705014