Linear Stochastic Estimation on flow over a backward facing-step
| dc.contributor.advisor | Hall, Joseph | |
| dc.contributor.author | Hashemi, Seyyed Mahmoodreza | |
| dc.date.accessioned | 2024-05-21T13:31:11Z | |
| dc.date.available | 2024-05-21T13:31:11Z | |
| dc.date.issued | 2024-03 | |
| dc.description.abstract | In the active flow control, Stochastic Estimation (SE) is a beneficial tool to predict the time-resolved flow field as it offers acceptable short-in-line processing time with higher temporal and spatial resolution. In SE, a correlation between the desired variable and the corresponding time-resolved point measurements obtained from a few locations, must be built. These correlations are employed to estimate the desired flow property. This study delves into SE methods, comparing the conventional SE method with a relatively unexplored technique, Spectral Linear Stochastic Estimation (SLSE) in the flow over a backward-facing step. The study found that conventional SE underestimates fluctuations, suggesting improved accuracy with increased sensor points. SLSE, while enhancing estimation, tends to overpredict structures. A sensor placement analysis addressed these challenges, finding that 8-point sensors, concentrated before the reattachment point, yield the best accuracy. This research aims to advance the understanding and optimization of stochastic estimation for improved flow prediction. | |
| dc.description.copyright | ©Seyyed Mahmoodreza Hashemi, 2024 | |
| dc.format.extent | x, 97 | |
| dc.format.medium | electronic | |
| dc.identifier.oclc | (OCoLC)1441256368 | en |
| dc.identifier.other | Thesis 11363 | en |
| dc.identifier.uri | https://unbscholar.lib.unb.ca/handle/1882/37820 | |
| dc.language.iso | en | |
| dc.publisher | University of New Brunswick | |
| dc.rights | http://purl.org/coar/access_right/c_abf2 | |
| dc.subject.discipline | Mechanical Engineering | |
| dc.subject.lcsh | Stochastic approximation. | en |
| dc.subject.lcsh | Flow visualization. | en |
| dc.subject.lcsh | Forecasting. | en |
| dc.title | Linear Stochastic Estimation on flow over a backward facing-step | |
| dc.type | master thesis | |
| oaire.license.condition | other | |
| thesis.degree.discipline | Mechanical Engineering | |
| thesis.degree.grantor | University of New Brunswick | |
| thesis.degree.level | masters | |
| thesis.degree.name | M.Sc.E. |