Different methods for estimating thermal diffusivity of a heat process

✍ Scribed by B. Leden; M.H. Hamza; M.A. Sheirah

• Publisher: Elsevier Science
• Year: 1976
• Tongue: English
• Weight: 1000 KB
• Volume: 12
• Category: Article
• ISSN: 0005-1098
• DOI: 10.1016/0005-1098(76)90005-4

✦ Synopsis

Compared to the widespread and highly accurate a~ngstr~m's 1861 method for determining the thermal ditusivity of a long copper rod the maximum likelihood method provides greater accuracy but more computational time and storage.

Summary---The purpose of this study is to compare three different methods for determining the thermal diffusivity of a one dimensional heat diffusion process. A modified ]U~ttr6m's method, an on-line least squares method and a maximum h]telihood method have been applied to data obtained from experiments on a long copper rod. The accuracy, the amount of computation, the storage capacity and in general the advantages and the limitations of the different methods are discussed.