Details

Autor(en) / Beteiligte

• Riva, A. F.
• Rosa, A. D.
• Clavel, C.
• Sifre, D.
• Mathon, O.
• Garbarino, G.
• Pascarelli, S.

Titel

Heat distribution in Paris-Edinburgh press assemblies through finite element simulations

Ist Teil von

• High pressure research, 2018-07, Vol.38 (3), p.303-324

Ort / Verlag

Abingdon: Taylor & Francis

Erscheinungsjahr

2018

Quelle

Taylor & Francis

Beschreibungen/Notizen

• Knowledge on the temperature distribution in high pressure and temperature devices is important for the interpretation of data and can often not be obtained from experiments. Here, we report on the thermal characteristics of the most employed Paris-Edinburgh press assemblies for in-situ X-ray purposes using finite element calculations. The maximal horizontal T variations in the sample are found to be small and amount maximal 50 K at 2500 K. Temperature differences between the sample and the calibrant material are in the same order of magnitude only if the latter is placed well centred on the sample capsule. The present (pure thermal) calculations can only partly reproduce the discrepancies between experimentally determined input power to T relations (1000 K at 350 W) indicating that different deformation behaviours of assemblies may play a crucial role. Based on the obtained results we present an optimized assembly in terms of sample temperature and gradients.