Publication detail
A Downhill Simplex method for computation of interfacial heat transfer coefficients in alloy casting
POHANKA, M. WOODBURY, K.
English title
A Downhill Simplex method for computation of interfacial heat transfer coefficients in alloy casting
Type
journal article in Web of Science
Language
en
Original abstract
This article describes methods used for obtaining both the thermal contact resistance (TCR) between an alloy casting and the mold, and the heat transfer coefficient (HTC) between the mold and a bath that is used to control the speed of the solidification process. Both the Downhill Simplex optimization method and Beck's approach are used in the inverse task. These inverse tasks, which simultaneously compute both the TCR and HTC, use a model involving a phase change during the solidification of the alloy. An automatically generated mesh uses the control volume method and "Direct Enthalpy" algorithm instead of the "Total Enthalpy" approach to compute the temperature profile inside the alloy-casting model. A comparison of the Downhill Simplex optimization method and Beck's approach is made.
English abstract
This article describes methods used for obtaining both the thermal contact resistance (TCR) between an alloy casting and the mold, and the heat transfer coefficient (HTC) between the mold and a bath that is used to control the speed of the solidification process. Both the Downhill Simplex optimization method and Beck's approach are used in the inverse task. These inverse tasks, which simultaneously compute both the TCR and HTC, use a model involving a phase change during the solidification of the alloy. An automatically generated mesh uses the control volume method and "Direct Enthalpy" algorithm instead of the "Total Enthalpy" approach to compute the temperature profile inside the alloy-casting model. A comparison of the Downhill Simplex optimization method and Beck's approach is made.
Keywords in English
interfacial heat transfer coefficient; casting; Downhill Simplex; inverse heat transfer; phase change; enthalpy; automatically generated
Released
01.10.2003
Publisher
TAYLOR & FRANCIS LTD, 4 PARK SQUARE, MILTON PARK, ABINGDON OX14 4RN, OXON, ENGLAND
Location
OXON, ENGLAND
ISSN
1068-2767
Volume
11
Number
5
Pages from–to
409–424
Pages count
16
BIBTEX
@article{BUT156295,
author="Michal {Pohanka} and Keith {Woodbury},
title="A Downhill Simplex method for computation of interfacial heat transfer coefficients in alloy casting",
year="2003",
volume="11",
number="5",
month="October",
pages="409--424",
publisher="TAYLOR & FRANCIS LTD, 4 PARK SQUARE, MILTON PARK, ABINGDON OX14 4RN, OXON, ENGLAND",
address="OXON, ENGLAND",
issn="1068-2767"
}