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Technical Briefs

Calculation Method for Thermal-Hydraulic System Simulation

[+] Author and Article Information
Li Chenggong, Jiao Zongxia

School of Automation Science and Electrical Engineering,  Beihang University, Beijing, 100083, China

J. Heat Transfer 130(8), 084503 (May 30, 2008) (5 pages) doi:10.1115/1.2928006 History: Received February 08, 2007; Revised February 25, 2008; Published May 30, 2008

This paper presents the fundamental approaches of modeling thermal-hydraulic component briefly. A set of lumped parameter mathematical models is developed, which are based on conservation of mass and energy. Subsequently, the connection rule for basic thermal-hydraulic components and the method to automatically generate the complete thermal-hydraulic system model are put forward. The integration methods for solving the cross-coupling thermal-hydraulic equations are also discussed for a position-controlled thermal-hydraulic system. Simulation results show the interaction between pressure and temperature. The simplified representations of thermal-hydraulic differential equations are also proposed in this paper, which can reduce simulation time. The validity of the simplified representations is judged by simulation.

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Copyright © 2008 by American Society of Mechanical Engineers
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Figures

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Figure 3

Position-controlled system

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Figure 4

Pressure and temperature response

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Figure 5

Pressure and temperature response

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Figure 6

Pressure and temperature response

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