Deformed gap space using macro-micro FEA model and transferred into a CFD model

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Using a cylindrical nozzle and seat of a Pressure Relief Valve (PRV) the surface form and waviness is modelled using actual metrological data i.e. average surface form and waviness (Wa and Wsm) in a 1/4 symmetry manner. To model the surface waviness the technique used is based on the summing technique created by Tsukizoe & Hisakado (1965) for micro contact analysis. Due to the actual surface form measurements being in the micro-meter range, the model is required to incorporate micro and macro-meter dimensions. The material in question is stainless steel. The deformed finite element analysis model is then transferred into a CAD geometry allowing the void space to be meshed and solved using computational fluid dynamics.
Original languageEnglish
Article number61264
Number of pages2
JournalProceedings in Applied Mathematics and Mechanics, PAMM
Issue number1
Early online date26 Oct 2016
Publication statusE-pub ahead of print - 26 Oct 2016
Event87th Annual Meeting of the International Association of Applied Mathematics and Mechanics, GAMM 2016 - Technische Universität Braunschweig, Braunschweig, Germany
Duration: 7 Mar 201611 Mar 2016
Conference number: 2016


  • microflow modelling
  • macro-micro FEA
  • fluid structure interaction
  • pressure relief valve
  • finite element analysis
  • metal-to-metal
  • gap space


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