Results 71 to 80 of about 3,078,462 (291)
Enhanced Drag in Pipe Turbulent Flow by an Aqueous Electrolyte: an Electroviscous Effect [PDF]
, 2009 Drag enhancement is reported for turbulent pipe flow of aqueous electrolyte solutions. No electroviscous effect was obtained with laminar flow. Nor was any unusual pressure drop observed for laminar or turbulent flow of non-electrolyte aqueous solutions ...
Chen, John J. J. +8 more
core +1 more source
Numerical Modeling of Photothermal Self‐Excited Composite Oscillators
Advanced Robotics Research, EarlyView.We present a numerical framework for simulating photothermal self‐excited oscillations. The driving mechanism is elucidated by highlighting the roles of inertia and overshoot, as well as the phase lag between the thermal moment and the oscillation angle, which together construct the feedback loop between the system state and the environmental stimulus.
Zixiao Liu +6 more
wiley +1 more source
Journal of Applied Fluid Mechanics, 2018 In order to investigate the effect of air flow rate distribution on plate flow field characteristics, an experiment of plate with air injection was conducted in a high speed towing tank.
H. Wu
doaj
Aerodynamic interference of wing on helicopter rotor during aerial refueling
Kongqi donglixue xuebaoTo enhance the safety of helicopter air-to-air refueling, a free-wake model incorporating rotor-wing aerodynamic coupling effects was developed for the specific operational conditions of this scenario.
Kehao Yuan, Dong Han, Yuhang Zhang
doaj +1 more source
DRAG MEASUREMENT OF SHUTTLECOCK IN FREE AIR
, 2021 An effort to measure the effect of the stinger on the shuttlecock was made. As the wind tunnel study uses a stinger to hold the shuttlecock in place, the effect of the stinger was studied by inserting a stinger on the shuttlecock and launching it using the pneumatic cannon.
openaire +2 more sources
On the air drag of an Arctic Ice Floe
Geophysical Research Letters, 1975 Measurements of wind speed were made between 31 March and 12 April, 1972 with sensitive cup anemometers at five heights in geometric progression from 25 cm to 4 m above the surface of a gently hummocked ice floe at each of two observation masts which were placed 250 m apart at the site of the main camp of the 1972 AIDJEX pilot experiments.
M. P. Langleben, E. R. Pounder
openaire +1 more source
A Soft Robotic Fish With a Dielectric Elastomer Actuator Body and Negative Stiffness Spine
Advanced Robotics Research, EarlyView.This work introduces a bio‐mimetic soft robotic fish driven by fiber‐reinforced dielectric elastomer actuators integrated as its body. By prestretching this active skin against a flexible spine, a negative stiffness system is created, enabling large‐amplitude bending.
Markus Koenigsdorff +4 more
wiley +1 more source
Journal of Natural FibersAir-jet weaving is an innovative weaving technique that uses friction between the yarn surface and air stream to propel the weft yarn. The interaction between the yarn surface and air is complex and affects weft yarn motion.
Bekinew Kitaw Dejene, Million Ayele
doaj +1 more source
International Journal of Naval Architecture and Ocean Engineering, 2019 To investigate the morphology characteristics of air layer in the air cavity, a numerical method with the combination of RANS equations and VOF two-phase-flow model is proposed for a plate with air cavity.
W.U. Hao, O.U. Yongpeng
doaj +1 more source
Modular, Textile‐Based Soft Robotic Grippers for Agricultural Produce Handling
Advanced Robotics Research, EarlyView.This article introduces textile‐based pneumatic grippers that transform simple textiles into robust bending actuators. Detailed experiments uncover how cut geometry and fabric selection shape performance. Successful handling of fragile agricultural items showcases the potential of textile robotics for safe, scalable automation in food processing and ...
Zeyu Hou +4 more
wiley +1 more source