Results 31 to 40 of about 384 (179)

Direct numerical simulation for modification of sinusoidal riblets

Journal of Fluid Science and Technology, 2016
This paper proposes a new riblet configuration. A traditional sinusoidal riblet was modified with the aim of reducing pressure drag. The height of the side wall in the newly configured riblet is lowered toward the node of the sinusoidal curve to reduce ...
Kie OKABAYASHI
doaj   +1 more source

Fish Scales: A Multifunctional Biomaterial from Nature

ENERGY &ENVIRONMENTAL MATERIALS, Volume 9, Issue 5, September 2026.
Fish scales demonstrate nature's solution to impact protection through overlapping multilayered architecture. This biological design combines mineralized surfaces with collagen networks to achieve both flexibility and fracture resistance. The structural principles inspire advanced protective materials and biomedical implants, where damage tolerance ...
Liyao Dong, Xiaojie Sun, Xiguang Chen
wiley   +1 more source

Experimental investigations on the drag reduction over riblets in a turbulent boundary layer under adverse pressure gradients

Nihon Kikai Gakkai ronbunshu
Experimental investigations on the drag reduction phenomenon over riblets have been made in turbulent boundary layer under adverse pressure gradients.
Takuto NONOMIYA, Monami SASAMORI, Shinsuke MOCHIZUKI   +2 more
doaj   +1 more source

Acute‐Phase Interventions After Self‐Harm for Preventing Suicide and Recurrence: A Systematic Review and Meta‐Analysis

Acta Psychiatrica Scandinavica, Volume 153, Issue 6, Page 610-626, June 2026.
ABSTRACT Introduction Suicide risk is markedly elevated following presentation after self‐harm, yet the evidence base for interventions initiated in the immediate post‐presentation period has not been synthesized with specific attention to this high‐risk window. Clarifying which early interventions may reduce adverse outcomes is essential for informing
Guilherme Pimenta Roncete, Luis C. Farhat, Loren Beiram, Bianca Besteti Fernandes Damiano, Craig J. Bryan, Karina L. Ramirez, Euripedes Constantino Miguel, Rodolfo Furlan Damiano   +7 more
wiley   +1 more source

Numerical Study of Shark-Skin Memetic Riblets on the Trailing Vortex and Boundary Layer Flow of the Wind Turbine Airfoil

Fluids
Shark skin grooves, known to reduce hydrodynamic drag, have inspired riblet structures for flow control. This study investigates their application to airfoils, where flow separation at high angles of attack (AOA) compromises aerodynamic stability and ...
Xiaopei Yang, Renzhong Wang, Bin Zuo, Boyan Jiang   +3 more
doaj   +1 more source

Influence of Wall Deformation Structure on the Liquid Film Flow Behavior Under Turbulent Conditions

Asia-Pacific Journal of Chemical Engineering, Volume 21, Issue 3, May/June 2026.
ABSTRACT To explore the influence of typical wall deformation structure in the scrubbing‐cooling tube on the liquid film, this paper studied the liquid film flow behavior on the riblet walls with representative riblet radii and compared them with the flat wall. Under different liquid film Reynolds numbers (Rel = 8.3 × 103 ~ 3.14 × 104), the liquid film
Qian Liu, Yifei Wang, Jie Zeng, Zongren Pan, Dawei Feng, Guangsuo Yu   +5 more
wiley   +1 more source

Direct numerical simulation for investigation on yaw angle effects on riblets

Journal of Fluid Science and Technology, 2017
The yaw angle (φ) effect on riblets are investigated by parametrically conducted direct numerical simulation (DNS). Three configurations are adopted: standard straight riblet, sinusoidal riblet, and modified sinusoidal riblet. The height of the side wall
Kie OKABAYASHI
doaj   +1 more source

Pharmacotherapeutic Management of Depression in Patients With Cancer: A Review of Mechanistic and Clinical Evidence

Cancer Reports, Volume 9, Issue 5, May 2026.
ABSTRACT Background Depression is a prevalent comorbidity in cancer, yet conventional treatments show inconsistent efficacy. This review sought to provide a mechanism‐based framework for managing cancer‐related depression by exploring its unique pathophysiology and evaluating promising pharmacotherapies based on their alignment with these biological ...
Sepideh Hajivalizadeh, Kimia Farahmand, Kimia Kazemzadeh, Ghazaleh Hajivalizadeh, Ahmad Shamabadi   +4 more
wiley   +1 more source

Drag Reduction Effect of Gradually-Varying Riblet Structures on Conical Rotating Disks

水下无人系统学报
Based on the enclosed flow field conditions and optimized dynamic-static clearances, a gradually-varying riblet drag reduction structure was proposed by combining the drag reduction principle of uniform-sized riblets to address the problem of increased ...
Sen WU, Jiaqi ZOU, Yicheng FAN, Dan ZHAO
doaj   +1 more source

Micropatterned Surfaces with Unidirectional Wetting Properties for Liquid Transport

Small Structures, Volume 7, Issue 2, February 2026.
Micropatterned surfaces that guide droplets in a single direction are gaining attention for their role in liquid transport. This review explores how surface designs enable such behavior, from gravity‐driven flow to stimulus‐responsive movement. It also discusses fabrication techniques, design challenges, and emerging strategies to advance directional ...
Elham Lori Zoudani, Prabuddha De Saram, Stefanie Feih, Hoang Huy Vu, Nam‐Trung Nguyen, Navid Kashaninejad   +5 more
wiley   +1 more source