Sensitivity study of IHTC on solidification simulation for automotive casting

Autor:	Ramesh Kumar Nayak, Suresh Sundarraj
Rok vydání:	2009
Předmět:	Materials science Mechanical Engineering Metallurgy Alloy Metals and Alloys Heat transfer coefficient engineering.material Casting Metal Thermal conductivity Mechanics of Materials visual_art Thermal engineering visual_art.visual_art_medium Initial value problem Cooling curve
Zdroj:	International Journal of Cast Metals Research. 22:294-297
ISSN:	1743-1336 1364-0461
DOI:	10.1179/136404609x367812
Popis:	Interface heat transfer coefficient values between the mould/metal interfaces need to be precisely determined in order to accurately predict the thermal histories at different locations in automotive castings. Thermo-mechanical simulations are carried out for Al–Si alloy casting processes using a commercial code. The simulation results are verified with experimental data from the literature. Sensitivity studies show that the choice of the initial value of the interface heat transfer coefficient (IHTC) between chill/metal as well as the sand mould/metal interfaces has a marked effect on the cooling curves. In addition, having chosen an initial value of the IHTC, the analyses also show differences in the solidification rate of the casting alloy near the sand/metal and chill/metal interfaces, upon further cooling. The gap formation, which results in a change in IHTC from the initial value, does not affect the cooling curves in the vicinity of the sand/metal interface due to lower thermal conductivity...
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::bf4322d772f0eb3b312abd3d7ef76e21 https://doi.org/10.1179/136404609x367812 Zobrazit plný text záznamu Plný text ve formátu PDF