Parametric study of WENO schemes in truncation, dissipation, and dispersion errors

San Yih Lin, Jen Jiun Hu

研究成果: Paper同行評審

摘要

Based on the dissipation and dispersion relations, eight weighted essentially non-oscillatory (WENO) schemes are investigated for computational aeroacoustics. For demand of high-order accuracy, all of WENO schemes are asked to be at least fourth-order accurate. Therefore, with a reasonable number of grid points, they can simulate the low-frequency waves in high order accuracy. But, for the higher frequency waves, two parameters in the WENO schemes are introduced to determine which scheme is better on the dissipation and dispersion errors. Both upwind and central schemes are considered and compared by the order of accuracy and the capability of wave capturing. A sequence of numerical simulations was carried out. These test problems are propagation of a sine-wave packet, propagation of a spherical wave, shock and sine wave interactions, and propagation of acoustic, vorticity, and density pulses in a freestream.

原文English
出版狀態Published - 2000 12月 1
事件Fluids 2000 Conference and Exhibit - Denver, CO, United States
持續時間: 2000 6月 192000 6月 22

Other

OtherFluids 2000 Conference and Exhibit
國家/地區United States
城市Denver, CO
期間00-06-1900-06-22

All Science Journal Classification (ASJC) codes

  • 流體流動和轉移過程
  • 能源工程與電力技術
  • 航空工程
  • 機械工業

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