Simultaneous Solution of Helical Coiled Once-Through Steam Generator with High-Speed Water Property Library
Author:
Wu Yingjie1,
Jiang Zhuo1,
Zhang Han1,
Liu Lixun1,
Tang Huanran1,
Guo Jiong1,
Li Fu1
Affiliation:
1. Institute of Nuclear and New Energy Technology, Collaborative Innovation Center of Advanced Nuclear Energy Technology, Key Laboratory of Advanced Reactor Engineering and Safety of Ministry of Education, Tsinghua University, Beijing 100084, China
Abstract
Efficient simulation of the helical coiled once-through steam generator (H-OTSG) is crucial in the design and safety analysis of the high-temperature gas-cooled reactor (HTGR). The physical property and phase transformation of water in the steam generator brings great challenges during simulation. The water properties calculation routine occupies a large part of the computational time in the steam generator solution process. Thus, a thermohydraulic property library is developed based on the IAPWS-IF97 formulation in this work to reduce the computational cost. Here the formulation adopts the backward equation method to avoid iterations in thermodynamic property calculation. Moreover, two Newton-method-based simultaneous solutions are implemented as implicitly nonlinear solvers, including Jacobian-Free Newton–Krylov (JFNK) and Newton–Krylov (NK) methods, due to its excellent computational performance. These simultaneous solution algorithms are combined with the developed water property library to simulate the H-OTSG efficiently. The numerical analysis is performed based on the transient and steady-state cases of the HTR-10 steam generator. Successful simulations of HTR-10 steam generator cases demonstrate the capability of the newly developed method.
Funder
National Natural Science Foundation of China
National Key Research and Development Program of China
Beijing Natural Science Foundation
Subject
Energy (miscellaneous),Energy Engineering and Power Technology,Renewable Energy, Sustainability and the Environment,Electrical and Electronic Engineering,Control and Optimization,Engineering (miscellaneous),Building and Construction
Reference36 articles.
1. The design features of the HTR-10;Wu;Nucl. Eng. Des.,2002
2. Hoffer, N.V., Sabharwall, P., and Anderson, N.A. (2011). Modeling a Helical-coil Steam Generator in RELAP5-3D for the Next Generation Nuclear Plant.
3. Numerical discretization analysis of a HTR steam generator model for the thermal-hydraulics code trace;Esch;Nucl. Technol. Radiat. Protect.,2014
4. Helical coil thermal hydraulic model;Caramello;J. Phys. Conf. Ser.,2014
5. Development of a computer code, ONCESG, for the thermal-hydraulic design of a once-through steam generator;Yoon;J. Nucl. Sci. Technol.,2012