In this work, DG schemes on Gauss and Gauss-Lobatto nodes, representatives of the class of summation-by-parts (SBP) schemes are investigated. With the increasing desire to discretize split-form equations, SBP space discretizations have gained increasing popularity since they mimick integration by parts. SBP schemes on Gauss nodes require correction terms on the element boundary fluxes. Hence, these nodes are less frequently used. However, they yield quadrature rules of higher degree of exactness. To gain additional insight into the impact on accuracy, we carry out a comparative Fourier type analysis for advection-diffusion equations using Gauss and Gauss-Lobatto DG schemes with three different viscous flux discretizations.
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