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Numerical modelling of solid hydrogen flow through an extruder die

Prashanth, SR and Arumugam, SK and Gangradey, R and Mukherjee, S and Kasthurirengan, S and Behera, U (2020) Numerical modelling of solid hydrogen flow through an extruder die. In: International Conference on Thermo-fluids and Energy Systems (ICTES2019), 27-28 December 2019, Bengaluru; India.

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Official URL: https://dx.doi.org/10.1088/1742-6596/1473/1/012006

Abstract

Harnessing energy by nuclear fusion has progressed into technological developments as a result of sufficient progress made in the theoretical investigations. Fueling a tokamak by pellet injection is reported to be most efficient among other fueling techniques. It is thus important to produce a solid hydrogen filament by extrusion process using an extruder-die setup. It is required to arrive at an optimum configuration of the die as the pressure drop in the die decides the load on the extruder. The present analysis focuses on developing a CFD model of a die taking into account the complex rheological behavior of solid hydrogen. A systematic parametric analysis is performed to study the influence of die geometry on the flow behavior. The un-yielded regions are identified from the simulation results. It has been found that the un-yielded region decreases as the contraction ratio and contraction angle is decreased. The un-yielded zone is predominantly present in the region before contraction. However, at lower flow rates, the un-yielded zone appears even after the contraction. © Published under licence by IOP Publishing Ltd.

Item Type: Conference Paper
Additional Information: cited By 0; Conference of International Conference on Thermo-Fluids and Energy Systems 2019, ICTES 2019 ; Conference Date: 27 December 2019 Through 28 December 2019; Conference Code:158451
Keywords: Computational fluid dynamics; Extruders; Extrusion dies; Fueling; Hydrogen, Contraction angles; Extrusion process; Optimum configurations; Parametric -analysis; Pellet injection; Rheological behaviors; Technological development; Theoretical investigations, Dies
Department/Centre: Division of Physical & Mathematical Sciences > Centre for Cryogenic Technology
Depositing User: Id for Latest eprints
Date Deposited: 15 Sep 2020 06:48
Last Modified: 15 Sep 2020 06:48
URI: http://eprints.iisc.ac.in/id/eprint/65119

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