Results 111 to 120 of about 5,274,833 (344)
Biofuels, Bioproducts and Biorefining, EarlyView.Abstract The development of renewable energy sources is important in order to achieve the United Nations Sustainable Development Goals (SDGs). Waste cooking oil (WCO) is a promising feedstock for biodiesel production through transesterification. Heterogeneous bifunctional catalysts offer a sustainable alternative to conventional homogeneous bases such ...
Frederick Jit Fook Phang +9 more
wiley +1 more source
Pressure and force data for a flat wing and a warped conical wing having a shockless recompression at Mach 1.62 [PDF]
A conical nonlinear flow computer code was used to design a warped (cambered) wing which would produce a supercritical expansion and shockless recompression of the crossflow at a lift coefficient of 0.457, an angle of attack of 10 deg, and a Mach number ...
Landrum, E. J. +3 more
core +1 more source
A numerical study on aerodynamic resonance in transonic separated flow [PDF]
, 2009 An ongoing numerical investigation of unsteady shock/boundary layer interaction on a 2-d supercritical airfoil in transonic flow is presented. Initially, the finitevolume URANS solver DLR-TAU is used to simulate self-sustained periodic shock oscillations
Nitzsche, Jens
core
Advancing Upcycling and Regeneration of Spent LiFePO4: Failure Mechanisms and Recovery Strategies
Carbon Energy, EarlyView.This review studies the failure mechanism to promote the upcycling regeneration of spent lithium iron phosphate (S‐LFP). It first summarizes the failure mechanisms of LFP batteries revealed via advanced characterization technologies and then explores the respective advantages and challenges of hydrometallurgy and direct regeneration methods.
Yi Wang +6 more
wiley +1 more source
The design of supercritical wings by the use of three-dimensional transonic theory [PDF]
A procedure was developed for the design of transonic wings by the iterative use of three dimensional, inviscid, transonic analysis methods. The procedure was based on simple principles of supersonic flow and provided the designer with a set of ...
Mann, M. J.
core +1 more source
Bifurcations in nonlinear models of fluid-conveying pipes supported at both ends
, 2005 Stationary bifurcations in several nonlinear models of fluid conveying pipes fixed at both ends are analyzed with the use of Lyapunov-Schmidt reduction and singularity theory.
Argentina +13 more
core +2 more sources
Biomass‐Coupled HER System: A Strategy for Sustainable and Low‐Cost Hydrogen Production
Carbon Energy, EarlyView.Pine wood is carbonized into a hierarchically porous biochar anode that undergoes carbon oxidation reaction, replacing the oxygen evolution reaction in alkaline water electrolysis. The resulting biomass‐coupled HER system converts water into hydrogen at low cell voltages, enabling low‐cost H2 production from renewable carbon resources. ABSTRACT Biomass‐
Yuming Huang +10 more
wiley +1 more source
Historical background and design evolution of the transonic aircraft technology supercritical wing [PDF]
Two dimensional wind tunnel test results obtained for supercritical airfoils indicated that substantial improvements in aircraft performance at high subsonic speeds could be achieved by shaping the airfoil to improve the supercritical flow above the ...
Ayers, T. G., Hallissy, J. B.
core +1 more source
A Methodology to Integrate Closed‐Cycle Heat Pumps into Batch Distillation Columns
Chemie Ingenieur Technik, EarlyView.Batch distillation often cannot use vapor recompression due to contamination risks in food and pharma. This study proposes a design for integrating closed‐loop heat pumps using natural fluids. Results show significant energy savings, offering a sustainable alternative to traditional setups.
Philipp Dorn +5 more
wiley +1 more source
Global and Detailed Calculation of Tube Wall Temperature in a Process Furnace Steam Superheater
Chemie Ingenieur Technik, EarlyView.This study presents a comparison between an iterative global model and multiple approaches to a new non‐iterative model with the purpose of predicting tube wall temperature of a superheater. The results show that the non‐iterative method achieves sufficient accuracy while improving the prediction of local temperature distribution and better ...
Anežka Michálková, Zdeněk Jegla
wiley +1 more source