English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

In finite-volume-based flow simulations, absorbing layers are widely used toreduce pressure wave reflections at boundaries of the computational domain. Adisadvantage of absorbing layers is that they contain case-dependentparameters; thus the question is how to optimally tune these parameters, sothat a desired reduction of reflections can be obtained? As a step towards theanswer of these questions, this article presents a theory which predictsreflection coefficients for absorbing layers. The theory is given for 1D-wavepropagation and is then extended to 2D and 3D to cover waves of obliqueincidence. The theory is validated via flow simulations of regular andirregular pressure waves in air and water, based on Navier-Stokes-typeequations and the finite-volume method. Theory predictions and simulationresults show good agreement. It is demonstrated how the theory can be used tooptimally tune the absorbing layer parameters to minimize undesired wavereflection. Thus the theory has benefits for a wide range of applications offinite-volume-based flow simulations in industrial practice.

Analytical Prediction of Reflection Coefficients for Wave Absorbing Layers