Flow and heat transfer numerical simulation of foam fluid in pipes

Key words:  foam flow in pipe  flow and heat transfer  numerical simulation  Nussalt number

Abstract:

The flow and heat transfer physical and mathematical models of foam fluid in pipes were established on the basis of mass, momentum and energy conservation equation. And the flow and heat exchange rules were simulated using FLUENT software. The pressure losses，velocity distribution and apparent viscosity distribution in section of different Reynolds number were given. And an empirical regression correlation between Nusselt number and friction coefficient in different Reynolds number was given. The results show that the pressure in pipe decreases along pipe, and the pressure drop increases with foam flow velocity rising. The temperature increases along pipe，and the differential temperature increases with foam flow velocity decreasing. The velocity and temperature distributions are nonuniform on cross section. The velocity is small and the temperature is high close to the pipe wall.