Results 181 to 190 of about 6,203 (293)

Research on intelligent assembly method of aero-engine deep-cavity nuts based on torque-angle control. [PDF]

Sci Rep
Liu Z, Huang X, Tan J.
europepmc   +1 more source

Marangoni Flow Before Carlo Marangoni

Annalen der Physik, Volume 538, Issue 6, June 2026.
ABSTRACT In fluid dynamics, particularly in research on soft matter, it is well known that surface tension gradients drive fluid flow, a phenomenon known as Marangoni flow. The effect is named after Carlo Marangoni, who described it in 1865 as part of his doctoral thesis on droplets and liquid films. While Marangoni's contribution is rightly recognized,
Vahid Nasirimarekani, Eberhard Bodenschatz   +1 more
wiley   +1 more source

Experimental Study on the Aerodynamic Characteristics of a Swept-Blade Wind Turbine Under Turbulent Inflow Conditions. [PDF]

Biomimetics (Basel)
Yang J, Sha C, Wang X, Yang H.
europepmc   +1 more source

The transonic safe mode as an enabler of next-generation wind turbines. [PDF]

Commun Eng
De Tavernier DAM, Zaaijer MB, von Terzi DA.   +2 more
europepmc   +1 more source

Three‐Year Characterization of Boundary Layer Dynamics From GNSS Zenith Wet Delay Spectral Analysis

Atmospheric Science Letters, Volume 27, Issue 6, June 2026.
Three years of GNSS zenith wet delay observations at Payerne reveal that spectral parameters—cutoff frequency α and variance σ2—capture robust seasonal cycles in boundary layer turbulence (R2 = 0.54 for α). Their inverse coupling tightens to r = −0.82 under summer convection, encoding regime‐dependent physics.
Gaël Kermarrec, Xavier Calbet, Zhiguo Deng   +2 more
wiley   +1 more source

Fault Detection in Axial Deformation Sensors for Hydraulic Turbine Head-Cover Fastening Bolts Using Analytical Redundancy. [PDF]

Sensors (Basel)
Yujra Rivas E, Vyacheslavov A, Gogolinskiy K, Sapozhnikova K, Taymanov R.   +4 more
europepmc   +1 more source

Raman Spectroscopy–Based Glucose Feed Control Automates Malic Acid Fermentation

Biotechnology and Bioengineering, Volume 123, Issue 6, Page 1721-1732, June 2026.
Raman spectroscopy enables automated, closed‐loop glucose feeding for malic acid production with Ustilago trichophora. Online PLS regression of glucose and malic acid provides input for PID control to maintain 20 g/L glucose. The feed is dynamically adjusted and stopped in response to metabolic demand and product inhibition, demonstrating practical ...
Luca Antonia Grebe, Katharina Hürter, Dominik Engel, Alexander Walter Wilhelm Echtermeyer, Mafalda S. Santos, Laurin Röder, Valentin Steier, Jörn Viell, Jørgen Barsett Magnus   +8 more
wiley   +1 more source

Aerodynamic performance optimization of the archimedes spiral wind turbine: combined experimental and CFD analysis of step ratio and blade number effects. [PDF]

Sci Rep
Faisal AE, Lim CW, Al-Quraishi BAJ, Milano J, Tan CH, Chen CP.   +5 more
europepmc   +1 more source

Optimized Mesh Zoning for Dam Bottom Outlet CFD Simulations Using Richardson Extrapolation and Grid Convergence Analysis

Engineering Reports, Volume 8, Issue 6, June 2026.
A Richardson‐extrapolation–based mesh zoning framework is developed to optimize CFD simulation accuracy and computational efficiency in dam bottom outlet flows. Using six mesh scenarios and multi‐parameter convergence analysis (pressure, velocity, TKE), the method identifies an optimal fine‐resolution zone around the gate and progressively coarser ...
Mohammad Masoud Vaseti, Ali Akbar Akhtari, Reza Tarinejad   +2 more
wiley   +1 more source

Operational characteristics and blade fatigue life analysis of a novel variable-pitch wind turbine under natural wind conditions. [PDF]

Sci Rep
Bao D, Zhang J, Jiang A, Shi Z, Luo Y, Ao X, Chen J.   +6 more
europepmc   +1 more source