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Flow pattern change and drag coefficient enhancement for non-flattened pappus models due to reversed wind direction
The architectural features of dandelion seeds contribute to their excellent flight ability. Previous studies have primarily focused on the...
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Drag and rolling moment measurements using accelerometer-based force balance in a shock tunnel
A multicomponent force balance was designed to measure the drag and rolling moment using an accelerometer-based technique. The force balance system...
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Quantifying Drag Coefficients Due to an Isolated Circular Vegetation Patch
The role of a circular vegetated patch size that emerged in stream flows has not yet been fully investigated. In this study, a circular patch was...
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Geometric descriptors for the prediction of snowflake drag
The dynamics of solid particles of complex shapes such as airborne snowflakes are governed by aerodynamic drag forces that are a function of the...
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Micro-Newton scale variable thrust control technique and its noise problem for drag-free satellite platforms: a review
High-precision detection in fundamental space physics, such as space gravitational wave detection, high-precision earth gravity field measurement,...
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Comparison of sub-grid drag laws for modeling fluidized beds with the coarse grain DEM–CFD approach
Fluidized particulate systems can be well described by coupling the discrete element method (DEM) with computational fluid dynamics (CFD). However,...
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Analysis of the Aspiration Drag in Dual-Bell Nozzles
The performance of dual-bell nozzles is affected by the aspiration drag generated in the recirculation zone during low-altitude operation. In this...
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Can lift be generated in a steady inviscid flow?
This paper presents a critical evaluation of the physical aspects of lift generation to prove that no lift can be generated in a steady inviscid...
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A novel bionic Coleoptera pantograph deflector for aerodynamic drag reduction of a high-speed train
As an important source of train aerodynamic drag, the pantograph area is a key region which takes up about 10% contribution of the total. Thus,...
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Drag exerted by a micropolar fluid on a dense swarm of permeable spherical particles
This work elucidates the slow steady axisymmetric flow of an incompressible non-Newtonian micropolar fluid around and through the swarm of permeable...
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Recent Advancements in Fluid Dynamics: Drag Reduction, Lift Generation, Computational Fluid Dynamics, Turbulence Modelling, and Multiphase Flow
By improving the understanding of fluid behaviour and allowing the development of cutting-edge technologies that enhance fluid-related processes in...
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Optimal tip shape for minimum drag and lift during horizontal penetration in granular media
Horizontal penetration in granular media is ubiquitous, from tunneling and geotechnical site investigation, to root growth and the locomotion of...
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Drag reduction for flow past a square cylinder through corner chamfering
This study investigates the unsteady incompressible flow around a square cylinder with different chamfer ratios (CRs) using a commercial finite...
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Stepped aerospike for enhanced drag reduction using multiple intermediate shocks
Drag reduction using aerospikes has been explored extensively due to the consequences associated with the range, manoeuvrability, and structural...
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Feasibility of using bio-mimicking fish scale textures in LPBF for water drag-reducing surfaces
In this work, bio-mimicking fish scale textures are produced by LPBF and AlSi7Mg0.6 powder to reduce drag forces on nautical components. For this...
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On the Reductions of Aerodynamic Drag and Heating of a Blunted Cone
The present study numerically investigates the effect of Mach 5.8 flow past different stepped taper spikes on the aerodynamic drag and heating of a...
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Copper capillaries with lubricant-infused walls: fabrication and drag reduction performance
The lubricant-infused surface (LIS) has emerged as a promising drag reduction surface for flow enhancement. At present, there are some applications...
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Numerical Modeling of the Shape Optimization for a Commercial Car by Decreasing Drag and Increasing Stability
The aerodynamic understanding of the automobile has become very significant for the automotive industry to decrease fuel consumption. The...
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Drag force coefficient and flow field variations of net with different levels of biological fouling under large-eddy simulation
The safety of the offshore net cage and the survival environment of cultured fish are closely related to the net system. Since the damage caused by...
