Results 61 to 70 of about 2,091 (166)
Rekayasa Mesin, 2020 Fin and tube heat exchangers use gas as a cooling/heating medium on the fin side. The low thermal conductivity of gases results in high thermal resistance, which results in a low rate of heat transfer.
Syaiful Syaiful +3 more
doaj +1 more source
Agrosystems, Geosciences &Environment, Volume 8, Issue 4, December 2025.Abstract Ammonia (NH3) volatilization reduces fertilizer use efficiency and increases environmental nitrogen (N) loss when urea ammonium‐nitrate (UAN) is surface‐applied. Volatilization is driven by localized pH increases resulting from the rapid hydrolysis of large quantities of urea.
Joshua Nasielski +2 more
wiley +1 more source
Engineering Reports, Volume 7, Issue 12, December 2025.Wire arc additive manufacturing (WAAM) enables precise metal part production but faces challenges in quality and complexity. Artificial intelligence (AI) techniques enhance efficiency, while blockchain ensures traceability and security. This study explores AI and blockchain integration in WAAM, highlighting their potential to optimize manufacturing ...
Ajithkumar Sitharaj +2 more
wiley +1 more source
Heat Transfer, Volume 54, Issue 7, Page 4536-4554, November 2025.ABSTRACT We present an analytical and numerical study of the entropy production rate in laminar counterflow parallel‐plate heat exchangers, aiming to investigate the interplay between multidimensional wall conduction, entropy production, and the optimum wall conductivity that leads to maximum effectiveness.
Santiago E. Ibáñez +2 more
wiley +1 more source
Numerical Analysis and Optimization of a Winglet for a Small Horizontal Wind Turbine Blade
Chemical Engineering Transactions, 2020 Wind energy is one of the main alternative energy sources and is present in various forms, from large offshore wind turbine installations, to small, privately used, small horizontal wind turbines (SHWT). Optimization of the turbine blades, and eventually
Charalampos Papadopoulos +4 more
doaj +1 more source
Engineering Reports, Volume 7, Issue 10, October 2025.The study compares forced convection heat transfer between rectangular solid fins and circular perforated fin arrays, considering variables such as fin spacing, perforation diameter, number of perforations, air velocity, and voltage. Experiments were conducted using aluminum fins, and the Nusselt number was calculated for each configuration ...
B. B. Ganesha +4 more
wiley +1 more source
Numerical Investigation of Blended Winglet Effects on Wing Performances: Winglet Aerodynamics [PDF]
, 2008 Since decades fuel never stops rising. Civil aviation market is very sensitive for profitability. Several ways are possible to reduce aircraft fuel consumption. One of them is the wingtip device. Winglet has been proven.
Lambert, Dimitri
core
Rotor: Jurnal Ilmiah Teknik Mesin, 2016 Winglet is one of the devices in airplane wing that allows wing performances without widening the wingspan. It serves to damp the vortex flow at the ends of the wing where the airflow coincide that produce turbulence.
Setyo Hariyadi S.P.
doaj
Performance Improvement of Hybrid Vertical Axis Wind Turbines Equipped With J‐Shaped Blades
Energy Science &Engineering, Volume 13, Issue 9, Page 4433-4444, September 2025.This study presents a novel hybrid vertical axis wind turbine, utilizing J‐shaped blades in Darrieus rotor. The proposed configuration shows the potential of J‐shaped blades in improving the overall performance of hybrid rotors. ABSTRACT Vertical axis wind turbines (VAWTs) are emerging as a promising solution for urban wind energy harvesting, owing to ...
Narges Kashani +3 more
wiley +1 more source
Numerical evaluation of thermo hydraulic performance index of a double pipe heat exchanger using dou
Journal of Thermal Engineering, 2020 The decade has witnessed great importance of numerical techniques for scientists and researchers in deciding the correctness, stability, and reliability of new designs.
R THEJARAJU +3 more
doaj +1 more source