CUED Publications database

Temporal Stabilisation of Flux Reconstruction on Linear Problems

Trojak, W and Watson, R and Tucker, PG Temporal Stabilisation of Flux Reconstruction on Linear Problems. In: 2018 Fluid Dynamics Conference, -- to --. (Unpublished)

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Filtering is often used in Large Eddy Simulation with a global filter width, instead here a filter width in the reference domain of high order Flux Reconstruction is considered. It is shown via Von Neumann analysis how filtering effects the dispersion and dissipation of the scheme when spatially and temporally discretised. With it being shown that filtering stabilises the scheme temporally by upto $25\%$ for forth order FR. The impact of filtering on error production is calculated, highlighting the reduction in convective velocity caused and showing numerically the impact on order of accuracy. Finally, the turbulent Taylor-Green case is used to understand the effect of reference domain filtering on the transition to turbulence, and a filter Reynolds number is defined that is shown to be useful in understanding the effect of filtering on simulations.

Item Type: Conference or Workshop Item (UNSPECIFIED)
Uncontrolled Keywords: math.NA math.NA
Divisions: Div A > Fluid Mechanics
Div A > Energy
Depositing User: Cron Job
Date Deposited: 26 May 2018 20:05
Last Modified: 01 Jul 2021 09:17
DOI: 10.2514/6.2018-4263