52 citations · 223 across the 16 of their papers we have counts for
16 papers
Modern aerodynamics models do not capture important unsteady forces--the failure of the quasi-steady approximation
Victoria M. Malarczyk, Marcus Hultmark
Aerodynamic unsteadiness is inherent to the operation of many engineering applications, especially those that involve large-scale rotating blades, such as modern wind turbines. Ove…
An analytical model for rotors in confined flow across operating regimes
I. M. L. Upfal, K. J. McClure, K. S. Heck +4
Rotors operating in confined flows, or blockage, are commonly encountered in wind and water tunnels, as well as in shallow or dense deployments of hydrokinetic turbines. Confinemen…
Time-varying wind-turbine wakes at high Reynolds numbers
Nathaniel J. Wei, Adina Y. Fleisher, John W. Kurelek +1
Wind turbines operating in the atmospheric boundary layer are constantly exposed to time-varying flow conditions. These disturbances often occur on similar time scales to wind-turb…
Understanding the effects of rotation on the wake of a wind turbine at high Reynolds number
Alexander Pique, Mark A. Miller, Marcus Hultmark
The wake of a horizontal-axis wind turbine was studied at with the aim of revealing the effects of the tip speed ratio, , on the wake. Tip speed ratios of $4<…
Spanwise wall forcing can reduce turbulent heat transfer more than drag
Amirreza Rouhi, Marcus Hultmark, Alexander J. Smits
Direct numerical simulations are performed of turbulent forced convection in a half channel flow with wall oscillating either as a spanwise plane oscillation or to generate a strea…
Contact-angle hysteresis provides resistance to drainage of liquid-infused surfaces in turbulent flows
Sofia Saoncella, Si Suo, Johan Sundin +5
Lubricated textured surfaces immersed in liquid flows offer tremendous potential for reducing fluid drag, enhancing heat and mass transfer, and preventing fouling. According to cur…