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Efficient hyper‐reduced‐order model (HROM) for thermal analysis in the moving frame
Author(s) -
Zhang Yancheng,
Combescure Alain,
Gravouil Anthony
Publication year - 2017
Publication title -
international journal for numerical methods in engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.421
H-Index - 168
eISSN - 1097-0207
pISSN - 0029-5981
DOI - 10.1002/nme.5466
Subject(s) - control volume , thermal , transient (computer programming) , constant (computer programming) , frame (networking) , mechanics , parametric statistics , control theory (sociology) , volume (thermodynamics) , time constant , advection , heat flux , steady state (chemistry) , process (computing) , materials science , heat transfer , thermodynamics , engineering , mathematics , physics , mechanical engineering , computer science , control (management) , chemistry , electrical engineering , statistics , artificial intelligence , programming language , operating system
Summary The hyper‐reduced‐order model (HROM) is proposed for the thermal calculation with a constant moving thermal load. Firstly, the constant velocity transient process is simplified to a steady‐state process in the moving frame. Secondly, the control volume is determined by the temperature rate, and the thermal equilibrium equation in the moving frame is derived by introducing an advective term containing the loading velocity. Thirdly, the HROM is performed on the control volume with a moving frame formulation. This HROM has been applied to the thermal loading on brick and ring disk specimens with a CPU gain of the order of 7 (10 7 ). In addition, two strategies are proposed for the HROM to improve its precision. Moreover, the high efficiency and high accuracy are kept for the parametric studies on thermal conductivity and amplitude of heat flux based on the developed HROM. Copyright © 2016 John Wiley & Sons, Ltd.