varmeflow
Varmeflow, often referred to as heat flow or thermal flux, is the rate at which thermal energy is transferred between bodies or regions due to a temperature difference. In engineering contexts it is expressed as a total rate Q, measured in watts (W), or as heat flux q'' per unit area, measured in watts per square meter (W/m^2). The sign convention usually assigns positive values to heat moving from hotter to cooler regions.
The primary mechanisms are conduction, convection, and radiation. In conduction through solids, Fourier's law relates the
In transient problems, the material's thermal diffusivity α = k/(ρ c) governs how temperature evolves in time, via
Applications include building insulation, electronic device cooling, automotive thermal management, and industrial process design. Understanding varmeflow