this glossary is made for understand better the key words of heat-transfer
Convection heat transfer coefficient
Noun
The rate of heat transfer between a solid surface and a fluid per unit surface area per unit temperature difference
Example: the convection heat transfer coefficient of this material is low
es: Coeficiente de transferencia de calor por convección
Critical Reynold´s number
Noun
determined as a limit where the laminar flow changes to turbulent flow
Example: The critical Reynolds number of this fluid is high
es: Numero critico de Reynolds
Friction Coefficient
Noun
ratio of the frictional force resisting the motion of two surfaces in contact to the normal force pressing the two surfaces together.
Example: these materials have a friction coefficient low
es: Coeficiente de fricción
Kinematic viscosity
Noun
an atmospheric variable defined as the ratio between the dynamic viscosity μ and the density ρ of the fluid
Example: this fluid has a kinematic viscosity high
es: Viscosidad cinemática
Laminar Flow
Noun
laminar flow is characterized by fluid particles following smooth paths in layers, with each layer moving smoothly past the adjacent layers with little or no mixing.
Example: this water flows in this tubing is a laminar flow
es: Flujo Laminar
Nusselt number
Noun
is the dimensionless heat transfer coefficient
Example: the nusselt number of this material is low
es: numero de Nusselt
Prandtl Number
Noun
the relative thickness of the velocity and the thermal boundary layers
Example: the prandtl number is high
es: Número de Prandtl
Reynold Number
Noun
The Reynolds number (Re) helps predict flow patterns in different fluid flow situations
Example: according to the Reynolds number this flow is turbulent
es: Número de Reynold
Shear stress
Noun
force tending to cause deformation of a material by slippage along a plane or planes parallel to the imposed stress
Example: this material has a shear stress hihg
es: Esfuerzo cortante
Turbulent flow
Noun
is a fluid flow in which the velocity at a given point varies erratically in magnitude and direction.
