Laminer Heat Flow

The type of flow occurring in a fluid in a channel is important in fluid dynamics problems and subsequently affects heat and mass transfer in fluid systems.

Laminer heat flow. Laminar flow type of fluid gas or liquid flow in which the fluid travels smoothly or in regular paths in contrast to turbulent flow in which the fluid undergoes irregular fluctuations and mixing in laminar flow sometimes called streamline flow the velocity pressure and other flow properties at each point in the fluid remain constant. Department of energy june 1992. In laminar flow in a tube with constant surface temperature both the friction factor and the heat transfer coefficient remain constant in the fully developed region. Laminar flow and conjugate heat mass transfer in plate fin ducts with various geometries such as sinusoidal rectangular triangular and parallel plate are investigated by considering finite fin conductance in heat and mass transfer.

Constant surface heat flux therefore for fully developed laminar flow in a circular tube subjected to constant surface heat flux the nusselt number is a constant. Thermodynamics heat transfer and fluid flow doe hdbk 1012 3 92 u s. Heat transfer is the ability to pass heat between a warmer object to a cooler object. Laminar flow over a horizontal surface may be.

The dimensionless reynolds number is an important parameter in the equations that describe whether fully developed flow conditions lead to laminar or turbulent flow. Other related chapters from the doe fundamentals handbook. This page provides the chapter on laminar and turbulent flow from the doe fundamentals handbook. Finite fin conductance parameters in heat and mass have determining effects on convective heat and mass transfer.

In plastics processing heat transfer is used to heat or cool objects such as molds rolls vessels heat exchangers and others. The reynolds number is the ratio of the inertial force to the shearing.