SIMULATION MODEL OF FLUID FLOW AND TEMPERATURE  DISTRIBUTION IN POROUS MEDIA USING CYLINDRICAL,  CONVERGENT AND DIVERGENT NOZZLES

Eko Yohanes  Setyawan; Soeparno  Djiwo; Totok  Sugiarto

Eko Yohanes Setyawan Mechanical Engineering, National Institute of Technology (ITN) Malang, Indonesia
Soeparno Djiwo Mechanical Engineering, National Institute of Technology (ITN) Malang, Indonesia
Totok Sugiarto Mechanical Engineering, National Institute of Technology (ITN) Malang, Indonesia

Keywords: Heat transfer, porous media and nozzle

Abstract

Simulation of heat transfer in porous media is performed to determine the model of fluid flow and temperature distribution in the test section using the cylindrical, convergent and divergent nozzles. The purpose of this simulation is to determine the effect of fluid velocity to the distribution of temperature in a porous medium using a variation of the nozzle. The simulation used the fluid velocity of 1.5 m/s with the incoming fluid temperature of 30⁰C, a temperature of lower plate as a heat sink is kept constant at 10⁰C. The material of porous media is the oil palm shell charcoal, which the porosity of 30%, the thermal conductivity of 6:21 W/ mK, and the density of 0.75593 g/cm³. The result shows that the cylindrical, convergent and divergent nozzles are able to distribute the fluid flow and temperature in porous media. The highest heat flux of 124.2 W/m² is obtained when the convergent nozzle is used. While the highest value of Reynolds number of 754.4797 is obtained when divergent nozzle is used.

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