Coping with shock : numerical procedure for the detection and sorting of shocks in fluid flows

Authors
Tam, Isaac
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Other Contributors
Shephard, M. S. (Mark S.)
Hicken, Jason
Sahni, Onkar
Issue Date
2021-05
Keywords
Aeronautical engineering
Degree
MS
Terms of Use
Attribution-NonCommercial-NoDerivs 3.0 United States
This electronic version is a licensed copy owned by Rensselaer Polytechnic Institute (RPI), Troy, NY. Copyright of original work retained by author.
Full Citation
Abstract
Within computational fluid dynamics (CFD) simulations, many complex flow phenomena can emerge. Accurately modeling these phenomena is often a primary motivating factor behind these simulations, and shocks are some of the most challenging phenomena to either model or resolve. However, once a shock is identified and well defined within a flow, there are many proven tools available to both improve the resolution of a given shock, and to efficiently propagate it through space. These methods often rely upon key geometric and/or mesh information related to the shocks, but such knowledge is non-trivial to obtain apriori. This thesis presents a numerical procedure to efficiently detect shocks, filter them to eliminate noise, and sort them into separate shocks or individual shock segments for further analysis. The resulting information could be used for shock fitting, anisotropic layered meshing, or analysis of complex shocks. A combination of numerical simulation data and manufactured data is used to demonstrate the performance of the current procedure. Overall, the novelprocedure developed in this work is robust, and results obtained thus far demonstrate its efficacy.
Description
May 2021
School of Engineering
Department
Dept. of Mechanical, Aerospace, and Nuclear Engineering
Publisher
Rensselaer Polytechnic Institute, Troy, NY
Relationships
Rensselaer Theses and Dissertations Online Collection
Access
CC BY-NC-ND. Users may download and share copies with attribution in accordance with a Creative Commons Attribution-Noncommercial-No Derivative Works 3.0 license. No commercial use or derivatives are permitted without the explicit approval of the author.