Simulation of the non‐isothermal flow in a twin‐screw extruder

Abstract

The paper deals with the numerical simulation and experimental validation of transport phenomena in a co-rotating twin screw extruder. We show steady state simulations of conveying elements in a relative system and compare them with transient simulations. With the transient simulation we are able to simulate the temperature development in the twin screw extruder. The results are compared with experimental results and show good agreement.

Non‐Isothermal Modeling of a Non‐Newtonian Fluid Flow in a Twin Screw Extruder Using the Fictitious Domain Method

“…Non-isothermal modeling of the flow in TSEs has been developed by some researchers. [9,[20][21][22] Sastrohartono and Jaluria [20] have modeled the non-isothermal flow behavior in TSE using FEM. In this work, the geometry is simplified and the model was developed in a 2D framework.…”

“…The nonisothermal modeling of flow in conveying region of TSE was carried out by Conzen and Wunsch. [22] To simulate the flow and temperature, they used the commercial software Fluent which is based on the finite volume method. The polymer melts have very low thermal conductivity and thus heat transfer is dominated by convection term and the major part of the input energy is dissipated in the fluid.…”

“…Non‐isothermal modeling of the flow in TSEs has been developed by some researchers . Sastrohartono and Jaluria have modeled the non‐isothermal flow behavior in TSE using FEM.…”

“…Ishikawa et al has simulated the non‐isothermal behavior of polymer melt in the kneading disk region of a TSE using FEM and quasi‐steady state approach. The non‐isothermal modeling of flow in conveying region of TSE was carried out by Conzen and Wunsch . To simulate the flow and temperature, they used the commercial software Fluent which is based on the finite volume method.…”

A fast numerical approach for the simulation of highly viscous non-isothermal non-Newtonian fluids

“…For instance, in [2,3,10,22,23] the pumping and mixing characteristic of Newtonian and non-Newtonian fluids in single and twin screw extruders were investigated. The influence of the temperature on the flow in screw extruders was discussed in [4][5][6]. In the context of a laminar flow through a static mixer, a comparison between experimental data given by a Laser-Doppler-Velocimetry and numerical results obtained by a finite element simulation was presented in [9], which showed an excellent agreement between both methods.…”