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Heat Transfer Research
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Heat Transfer Research

DOI: 10.1615/HeatTransRes.2015006021
pages 785-794

NUMERICAL SIMULATION OF PROCESSES OCCURRING IN A STEAM−WATER MIXING HEATER

Xingfang Zhang
College of Chemistry and Chemical Engineering, Taiyuan University of Technology, Taiyuan 030024, China
Junhui Zhang
CNNC Xinneng Nuclear Engineering Co., Ltd., Taiyuan 030012, China
Xinghui Zhang
College of Environmental Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, China
Sheng Wu
Taiyuan Boiler Group Co., Ltd., Taiyuan 030021, China
Jian Liu
College of Chemistry and Chemical Engineering, Taiyuan University of Technology, Taiyuan 030024, China
Xiujuan Zhang
Taiyuan Boiler Group Co., Ltd., Taiyuan 030021, China

ABSTRACT

Numerical simulations were conducted to examine the heat transfer processes occurring in a steam−water mixing heater that has different inlet steam pressures. The FLUENT, which is a commercial computational fluid dynamics software, and the volume of fluid multiphase flow model were used to simulate the two-phase flow in a steam−water mixing heater. The condensation heat transfer source term and the mass transfer source term, which were obtained by calculating the phase interface temperature gradient, were integrated in the simulation. The simulation results coincide with experimental data and show that the exit speed, temperature, and the nondimensional length of the steam plume increase with increasing inlet steam pressure.


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