4 papers · 1 filter
Revealing the mechanism and scaling laws behind equilibrium altitudes of near-ground pitching hydrofoils
Tianjun Han, Qiang Zhong, Amin Mivehchi +2
A classic lift decomposition (von Kármán & Sears 1938) is conducted on potential flow simulations of a near-ground pitching hydrofoil. It is discovered that previously observed sta…
Scaling Laws for the Propulsive Performance of a Purely Pitching Foil in Ground Effect
Amin Mivehchi, Qiang Zhang, Melike Kurt +2
Scaling laws for the thrust production and power consumption of a purely pitching hydrofoil in ground effect are presented. For the first time, ground effect scaling laws based on…
Scaling Laws for the Propulsive Performance of Three-Dimensional Pitching Propulsors
Fatma Ayancik, Qiang Zhong, Daniel B. Quinn +3
Scaling laws for the thrust production and energetics of self-propelled or fixed-velocity three-dimensional rigid propulsors undergoing pitching motions are presented. The scaling…
Entrainment and mixing in gravity currents using simultaneous velocity-density measurements
Sridhar Balasubramanian, Qiang Zhong
Gravity currents modify their flow characteristics by entraining ambient fluid, which depends on a variety of governing parameters such as the initial density, , the total init…