Technical University of Denmark

Detailed experimental investigation of the aerodynamics and blade/tower interaction of a 1.5 MW wind turbine in a downwind configuration

Abstract. We present a detailed experimental investigation of the flow details of the blade/tower interaction on a 1.5 MW wind turbine operated in a downwind configuration. The study aims to address claims of shortcomings in the downwind turbine concept, such as impulsive blade l...

Valorization of Wheat Straw Hydrolysate into Succinic Acid by Fermentation with Actinobacillus succinogenes

Succinic acid (SA) production from agro-industrial waste, such as lignocellulosic biomass, has been gaining interest. Traditionally, it is synthesized from petrochemical sources, a process associated with negative environmental impacts. In recent decades, efforts to develop clean...

Ancient DNA reveals early use of melons in China’s Song dynasty

Abstract Melon ( Cucumis melo L.) domestication is thought to have occurred independently once in Northeast Africa and twice in India, but archaeobotanical seed remains point to a possible additional domestication in China. Because Cucumis seeds are difficult to diagnose morpholo...

A numerical study on the effect of laser beam shaping on surface roughness and texture in laser powder bed fusion

Spatial laser beam shaping is investigated to assess its influence on surface roughness in laser powder bed fusion (PBF-LB) of 316L stainless steel. A high-fidelity CFD model developed in FLOW-3D simulates Gaussian (GBP) and Ring-spot (RSBP) beam profiles, resolving laser absorpt...

Load application in wind turbine blades modelled as reduced-order multibody structures in the floating frame of reference formulation

Abstract. Wind turbine aeroelastic simulation tools usually rely on the Blade Element Momentum (BEM) theory to calculate aerodynamic loads and a beam finite element model for the structural response. A method to transfer distributed aerodynamic loads computed by these aeroelastic...

Thickness-dependent crack suppression and wrinkle formation in freestanding BaTiO3 membranes

Freestanding ferroelectric oxide membranes offer a promising route toward silicon-integrated low-power electronic and memory devices, but reproducible membrane quality remains challenging, particularly in ultrathin BaTiO 3 (BTO), where cracking and wrinkling hinder integration. H...

A suction-controlled laboratory campaign for assessing the hydro-mechanical properties of a compacted silty sand mixture

Due to continuous water level fluctuations and changes in climatic boundary conditions, river embankments experience frequent variations in the degree of saturation and suction distributions, which strongly influence earthworks performance, both in terms of infiltration regime an...

Effects of Ultrasound-Assisted Extraction of Biofractions from Yellow Mealworm Larvae Fed a Probiotic-Enriched Diet

The increasing demand for sustainable protein sources has stimulated interest in edible insects such as Tenebrio molitor (yellow mealworm) larvae. While probiotics supplementation has been explored to improve insect growth performance, its impact on protein quality and downstream...

Effect of Microstructural Features’ Volume Fraction and Geometry on Digital Volume Correlation Analysis

Digital volume correlation (DVC) is widely used to extract internal displacement and strain fields from X-ray computed tomography (XCT) data, yet the limits imposed by the material’s own texture remain poorly quantified. This paper quantifies the individual and combined effects o...

An experimental campaign to measure turbulence in the marine boundary layer

Abstract. There is a lack of measurement data on the spatial structure of turbulence at heights greater than 100 m in the marine atmospheric boundary layer (MBL). Consequently, turbulence models like the Mann and Kaimal models, which are referred to in industry standards, have no...

Watch that seam! Designing hybrid presentations with data visualisation in augmented reality

Presentations with Augmented Reality (AR) are becoming an essential tool of design teams. They allow designers to more easily connect the dots leading to design ideas. However, data visualisation with AR in the context of presentations are little researched to date. This leaves t...

H I Absorbers as Beacons of Hidden Structure at z ~ 3: Multi-Component, Metal-Rich Absorption System near a Protocluster

Abstract H i gas traces the large-scale structure and provides the primary fuel for star formation. High-z protoclusters are ideal laboratories to study how H i gas is accreted and consumed during the formation of the most massive structures in the Universe. However, much remains...

Tailoring cellular automata for physically-based generation of periodic microstructures in powder bed fusion processes

Abstract Accurate representation of periodic microstructures is essential for predicting faster the effective mechanical response of additively manufactured metals through computational homogenization. While geometrically-based microstructure generation approaches can readily enf...

Alpha and beta event-related synchronization as neural markers of self-other processing during sensorimotor coordination

Interpersonal synchrony requires continuously balancing internally generated timing predictions with externally driven adjustments to a partner's behavior. Neural oscillations in alpha and beta bands have been implicated in prediction processes during joint action, yet their role...

Designing a School-Based, Complex Public Health Intervention to Improve Iodine Awareness in Adolescents in Six Countries

Background: Iodine is an essential micronutrient required for foetal development, cognitive function, and metabolic regulation; however, suboptimal iodine status remains a public health concern in Europe and other regions. Improving food literacy related to iodine may support hea...

The effect of freshwater biases on AMOC stability across the model complexity spectrum

Abstract A collapse of the Atlantic Meridional Overturning Circulation (AMOC) would have strong consequences for the global climate system. Assessing whether the AMOC will collapse in the future is difficult since current Earth System Models (ESMs) have biases. An earlier study u...

Monolithic silicon micromechanical metastructures for compliant MEMS devices

Abstract Mechanical metastructures (MMs) have enabled exotic and programmable mechanical properties in artificial materials, which have attracted considerable interest for applications like energy harvesting, energy absorption, sensing, and biomedical devices. Although MMs have a...

Effective nitrogen removal from coastal sediments at 10 °C using sediment microbial fuel cells

Nitrogen pollution in cold coastal sediments has become increasingly prominent. Sediment microbial fuel cells (SMFC) are efficient at preventing ammonia release and hypoxia, but low temperature conditions may significantly limit their efficiency. In this study, two SMFC systems w...

The AWAKEN wind farm benchmark – Part 2: Modeling results

Abstract. Accurately modeling wind farm performance in complex atmospheric flows remains a challenge. This paper presents the modeling results of the American WAKE experimeNt (AWAKEN) wind farm benchmark, a collaborative effort involving 16 research groups from academia and indus...

Techno-economic feasibility of offshore wind-based ammonia production for La Guajira, North Sea, and Gulf of Roses

This study evaluates the techno-economic feasibility of offshore wind-based ammonia production in 2035 and 2050. A pseudo-dynamic modeling framework with capacity optimization is applied to three offshore sites in Colombia, Denmark, and Spain using long-term wind data to capture...