The current work is a follow-up study on numerical simulations of particulate-induced transition for hypersonic boundary layer flows. While prior works have focused on obtaining an efficient and highly accurate simulation approach, in this work the main objective is to analyze the disturbance flow field during the particle impingement phase and its subsequent downstream evolution. Particulate impingement simulations were conducted employing the adaptive mesh refinement wave-packet tracking technique for a plate boundary-layer flow with a freestream Mach number of 5.35 and an isothermal wall at 300K. The disturbance flow field was analyzed by computing frequency spectra for wall pressure along streamwise direction and distributions of the different unsteady disturbance flow quantities at a position in the vicinity of the particle impingement location and further downstream where the mode S (for these conditions, commonly referred to as second mode) dominated wave-packet has been fully established. Biorthogonal decomposition was used to project the disturbance flow field onto normal modes and gain insight into the contributions from the different discrete and continuous modes to the disturbance flow field, and, in particular, to understand how the disturbance energy is translated into mode S.
|Title of host publication||AIAA AVIATION 2020 FORUM|
|Number of pages||27|
|State||Published - 2020|
|Event||AIAA AVIATION 2020 FORUM - Virtual, Online|
Duration: Jun 15 2020 → Jun 19 2020
|Name||AIAA AVIATION 2020 FORUM|
|Conference||AIAA AVIATION 2020 FORUM|
|Period||6/15/20 → 6/19/20|
Bibliographical noteFunding Information:
Some funding support was provided by the Office of Naval Research under contract N00014-19-1-2223 with Dr. Eric Marineau as Program Manager. A. Tumin was supported by ONR Grant N00014-17-1-2343 monitored by Dr. Eric Marineau. The authors also want to thank Anthony Haas at the University of Arizona for sharing data for validation purposes.
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ASJC Scopus subject areas
- Nuclear Energy and Engineering
- Aerospace Engineering
- Energy Engineering and Power Technology