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ORCID
https://orcid.org/0000-0003-1621-6618
Access Type
Open Access Thesis
Document Type
thesis
Degree Program
Mechanical Engineering
Degree Type
Master of Science (M.S.)
Year Degree Awarded
2019
Month Degree Awarded
September
Abstract
The problem of calculating iso-surface statistics in turbulent flows is interesting for a number of reasons, some of them being combustion modeling, entrainment through turbulent/non-turbulent interfaces, calculating mass flux through iso-scalar surfaces and mapping of scalar fields. A fundamental effect of fuid turbulence is to wrinkle scalar iso-surfaces. A review of the literature shows that iso-surface calculations have primarily been done with geometric methods, which have challenges when used to calculate surfaces that have high complexity, such as in turbulent flows. In this thesis, we propose an alternative integral method and test it against analytical solutions. We present a parallelized algorithm and code to enable in-simulation calculation of isosurface area. We then use this code to calculate area statistics for data obtained from Direct Numerical Simulations and make predictions about the variation of the iso-scalar surface area with Taylor Peclet numbers between 9.8 and 4429 and Taylor Reynolds numbers between 98 and 633.
DOI
https://doi.org/10.7275/14929383
First Advisor
Stephen de Bruyn Kops
Recommended Citation
Shete, Kedar Prashant, "Calculation of Scalar Isosurface Area and Applications" (2019). Masters Theses. 854.
https://doi.org/10.7275/14929383
https://scholarworks.umass.edu/masters_theses_2/854
Included in
Acoustics, Dynamics, and Controls Commons, Computer-Aided Engineering and Design Commons, Heat Transfer, Combustion Commons