5 papers
Modification of Turbulent Boundary Layer Coherent Structures with Drag Reducing Polymer Solution
Yasaman Farsiani, Zeeshan Saeed, Balaji Jayaraman +1
The modification of dominant coherent structures that extend through the log-region of a drag reduced turbulent boundary layer is studied via examination of two-point correlations…
Drag Reduction Performance of Mechanically Degraded Dilute Polyethylene Oxide Solutions
Yasaman Farsiani, Zeeshan Saeed, Brian R. Elbing
Mechanical degradation of dilute solutions of polyethylene oxide (PEO) via chain scission was investigated within a turbulent pipe flow. Comparisons of the drag reduction performan…
Measurement and characterization of infrasound from a tornado producing storm
Brian R. Elbing, Christopher E. Petrin, Matthew S. Van Den Broeke
A hail-producing supercell on 11 May 2017 produced a small (EFU) tornado near Perkins, Oklahoma (35.97, -97.04) at 2013 UTC. Two infrasound microphones with a 59-m separation and a…
Experimental Characterization of High-Amplitude Fluid-Structure-Interaction of a Flexible Hydrofoil at High Reynolds Number
Brian R. Elbing, Steven D. Young, Brent A. Craven +4
A fluid-structure-interaction (FSI) experiment was designed and executed with a focus on producing low-frequency (~10 Hz), high-amplitude (3.5% of the span) fin motion. This w…
Characterization of a Canonical Helicopter Hub Wake
Christopher E. Petrin, Balaji Jayaraman, Brian R. Elbing
The current study investigates the long-age wake behind rotating helicopter hub models composed of geometrically simple, canonical bluff body shapes. The models consisted of a 4-ar…