High-Pressure Real-Gas Jet and Throttle Flow as a Simplified Gas Injector Model Using a Discontinuous Galerkin Method

Fabian Hempert (), Sebastian Boblest (), Malte Hoffmann (), Philipp Offenhäuser (), Filip Sadlo (), Colin W. Glass (), Claus-Dieter Munz (), Thomas Ertl () and Uwe Iben ()
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Fabian Hempert: Robert Bosch GmbH
Sebastian Boblest: Visualization Research Center, University of Stuttgart
Malte Hoffmann: Institute for Aerodynamics and Gas dynamics, University of Stuttgart
Philipp Offenhäuser: High Performance Computing Center, University of Stuttgart
Filip Sadlo: Interdisciplinary Center for Scientific Computing, Heidelberg University
Colin W. Glass: High Performance Computing Center, University of Stuttgart
Claus-Dieter Munz: Institute for Aerodynamics and Gas dynamics, University of Stuttgart
Thomas Ertl: Visualization Research Center, University of Stuttgart
Uwe Iben: Robert Bosch GmbH

A chapter in High Performance Computing in Science and Engineering ´16, 2016, pp 289-300 from Springer

Abstract: Abstract Industrial devices such as gas injectors for automotive combustion engines operate at ever-increasing pressures and already today reach regimes beyond the ideal-gas approximation. Numerical simulations are an important part of the design process for such components. In this paper, we present a case study with a computational fluid dynamics code based on the discontinuous Galerkin spectral element method with a real-gas equation of state. We assess a high-pressure throttle and jet flow as a basic model of a gas injector. We apply a shock-capturing method to achieve a robust simulation, and a newly developed method to maintain high efficiency despite load imbalances introduced by the shock capturing. The results indicate a dynamic mass flow rate at different pressure ratios between the inlet and outlet.

Date: 2016
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Persistent link: https://EconPapers.repec.org/RePEc:spr:sprchp:978-3-319-47066-5_20

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DOI: 10.1007/978-3-319-47066-5_20

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