Results 21 to 30 of about 100,432 (219)
Turbulence Modification by Superhydrophobic Bluff Body
, 2023 This paper investigates the impact of superhydrophobicity on turbulent flow characteristics, drag force, and lift forcethrough numerical simulations. A superhydrophobicity boundary condition is implemented on the surface of a sphere, altering the fluid-solid interaction, and introducing air pockets within the superhydrophobic texture.
Eckhard Mayer, Tielo Schulte
openaire +1 more source
Experimental Study on Bluff-Body Stabilized Premixed Flame with a Central Air/Fuel Jet
Energies, 2017 Bluff-body flame holders are commonly employed in many industrial applications. A bluff-body is usually adopted to enhance the downstream mixing of the combustion products and the fresh fuel-air mixtures, thus to improve the flame stability and to ...
Yiheng Tong +4 more
doaj +1 more source
Energies, 2021 The aim of this work is to design a piezoelectric power generation system that extracts power from the vibration of a cantilever beam. A semi-cylinder placed in a water stream and attached to the beam is excited into vortex-induced vibrations (VIV ...
Christina Hamdan +2 more
doaj +1 more source
Biomimetic bluff body drag reduction by self-adaptive porous flaps [PDF]
, 2011 The performances of an original passive control system based on a biomimetic approach are assessed by investigating the flow over a bluff-body. This control device consists in a couple of flaps made from the combination of a rigid plastic skeleton coated
Alben +29 more
core +4 more sources
Complexity, 2020 The technology of scavenging ambient energy to realize self-powered of wireless sensor has an important value in practice. In order to investigate the effects of piezoelectric-patch length and the shape of front bluff body on energy conversion of the ...
Changjiang Zhang +5 more
doaj +1 more source
On the relationship between the vortex formation process and cylinder wake vortex patterns [PDF]
, 2004 The idea of vortex formation time, originally developed for vortex ring formation, is extended to bluff-body flows. Effects related to characteristic vortex formation time are shown for both the cylinder starting from rest and the cylinder undergoing ...
Gharib, Morteza, Jeon, David
core +1 more source
Joint experimental and numerical study of the influence of flame holder temperature on the stabilization of a laminar methane flame on a cylinder [PDF]
, 2016 The mechanisms controlling laminar flame anchoring on a cylindrical bluff-body are investigated using DNS and experiments. Two configurations are examined: water-cooled and uncooled steel cylinders.
Bédat, Benoît +6 more
core +4 more sources
Role of Bluff Body Configuration in Modifying Turbulent Flow in Sudden Expansions [PDF]
Journal of Applied Fluid MechanicsThis study combines experimental and numerical approaches to investigate flow behavior downstream of bluff bodies placed at the mid-span of a rectangular sudden expansion configurations common in combustion chambers, burners, flame stabilizers, and ...
E. Wahba, A. Abdel-Fattah, A. F. Mahrous
doaj +1 more source
Fast Fluid Dynamics Simulation of the Airflow Around a Single Bluff Body [PDF]
E3S Web of Conferences, 2022 Fast and accurate simulation of the outdoor airflow distribution is important for studying urban microclimate. In this paper, two pressure-correction schemes (i.e., NIPC and NSPF) for solving the N-S equation item by item are implemented in OpenFOAM and ...
Jiejie Huang +6 more
doaj +1 more source
Energies, 2022 In this paper, a piezoelectric and electromagnetic hybrid wind energy harvester is proposed. The general design of the harvester comprises multiple cantilever piezoelectric energy harvesters (PEHs) and electromagnetic energy harvesters (EEHs) embedded ...
Mahmood Al-Riyami +2 more
doaj +1 more source