Passive Flow Control with Bio-inspired Anisotropic Permeable Propulsive Substrate
Abstract
The proposed research uses high-fidelity numerical simulations, experiments, and computational modeling to examine turbulent flow characteristics over a bio-inspired anisotropic permeable propulsive substrate (APPS). Recent advancements in additive manufacturing have enabled the fabrication of structurally robust porous materials with tunable anisotropic porosities. However, applying such materials for passive flow control (which requires no external energy input for actuators or sensors) remains underexplored. Our recent research on shark skin found that the tiny, tooth-like structures on a shark s skin, known as dermal denticles, can create a pore flow under certain flow conditions through micro channels between their stems. The pore flow produces a thrust that boosts the shark as it swims yet does not introduce a drag penalty in off-design flow conditions. This discovery suggests an innovative way to control fluid flow and reduce drag, which could benefit engineering applications.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Feb 06, 2025
- Source ID
- FA95502510033
Entities
People
- Wen Wu
Organizations
- Air Force Office of Scientific Research
- United States Air Force
- University of Mississippi