Numerical Simulation of Heat Transfer and Crystallization of Non-Newtonian Flow in a Two-dimensional Flat Channel

Autor:	Yasuhiko Hirao, Masami Taniguchi, Yoshiaki Aoki, Toshio Aihara
Rok vydání:	1997
Předmět:	Convection Materials science integumentary system Computer simulation Flow (psychology) Thermodynamics Mechanics Boundary layer thickness law.invention Physics::Fluid Dynamics Boundary layer law Heat transfer Crystallization Layer (electronics)
Zdroj:	Seikei-Kakou. 9:162-168
ISSN:	1883-7417 0915-4027
DOI:	10.4325/seikeikakou.9.162
Popis:	Solidification process of molten polymer flowing in a two-dimensional flat channel was simulated with a numerical simulation program developed by considering non-Newtonian flow and crystallization simultaneously. In our crystallization model, effects of non-isothermal, convective, and stress-induced crystallization kinetics were taken into account. The effect of the cooling wall temperature on the velocity distribution and the formation of the skin layer is predicted. The skin layer becomes thicker along the flow direction, owing to the development of a temperature boundary layer, though the skin layer and the temperature boundary layer are not analogical. The skin layer thickness is predicted to be greater with mass velocity under the same cooling wall temperature. Simulated skin layer thickness, affected by stress-induced crystallization in a strong viscous shear flow, agreed with experimental data.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::22a42293cc9ac1f13a2a43fbac832665 https://doi.org/10.4325/seikeikakou.9.162 Zobrazit plný text záznamu