关于热力学、热量传递和质量传递,以及流体工程的 A-Z 指南
中文 English Русский Português Español Français Deutsch 关于我们 编辑 联系我们 访问 Begell House

Developed heat transfer

Convective heat transfer in a pipe at such a distance from the entrance beyond which the prescribed boundary conditions at the wall govern the exchange processes so that the temperature field is essentially independent of the nature of the temperature and velocity distribution at the entrance.
Comment. When the properties of the fluid remain constant for certain types of boundary conditions at the wall (e.g., constant wall temperature or constant heat flux at the wall), the temperature distribution (measured from the wall temperature) over the flow section in the case of developed heat transfer remains self-similar at different cross sections of the pipe. Moreover, the heat transfer coefficient, referred to the local temperature difference, does not change over the length of the pipe.

返回顶部 © Copyright 2010-2022
A-Z 索引 作者/编辑 语义地图 视觉画廊 贡献 Guest