Turbulence and heat transfer are two critical factors in the chain of world energy
consumption. Hence, development of more efficient energy transfer techniques in …

Continuous evolution in nature has created optimum solutions for creature survival that have
inspired many innovative engineering designs. Riblet geometries, passive flow control …

The many hydrodynamic implications associated with the geomorphological evolution of
braided rivers are still not profoundly examined in both experimental and numerical …

The present work aims to improve the aerodynamic performance of navigating objects using
bio-inspired surface modification. Inspired by the denticles present over sharkskin, this work …

Prediction of drag reduction effect caused by pulsating pipe flows is examined using
machine learning. First, a large set of flow field data is obtained experimentally by …

The inner and outer layers of a turbulent channel flow over a superhydrophobic surface
(SHS) are characterized using simultaneous long-range microscopic particle tracking …

Convergent–divergent riblets (C–D riblets) are a type of grooved surface pattern with
directionality and spanwise heterogeneity. In the cross-stream plane, we apply stereoscopic …

One of the most interesting passive drag reduction techniques is based on the use of riblets
or streamwise grooved surfaces. Detailed flow features inside the grooves can be …

Experimental investigations of turbulent boundary-layer flows over a semi-circular riblet
surface were conducted to study the mechanisms of friction drag reduction. Particle-image …

The effect of drag reducing riblets on the flow structure was examined experimentally for a
turbulent boundary layer at Re θ= 9890 and riblet spacing s+= 13.4. Trapezoidal riblets were …