A numerical investigation on the vortex formation and flow separation of the oscillatory flow in jet pumps [PDF]
, 2015 A two-dimensional computational fluid dynamics model is used to predict the oscillatory flow through a tapered cylindrical tube section (jet pump) placed in a larger outer tube.
ANSYS +8 more
core +3 more sources
Numerical investigation on a travelling wave thermoacoustic heat pump
Journal of Thermal Science and Technology, 2018 A thermoacoustic heat pump heater is a device having the ability to produce heat from acoustic power. The heat pump investigated was composed of an acoustic driver, a branched tube, and a looped tube.
Maroua BEN NASR +3 more
doaj +1 more source
A Direct Method for Photoacoustic Tomography with Inhomogeneous Sound Speed [PDF]
, 2015 The standard approach for photoacoustic imaging with variable speed of sound is time reversal, which consists in solving a well-posed final-boundary value problem for the wave equation backwards in time.
Belhachmi, Zakaria +2 more
core +2 more sources
Simplification of sound-pressure characteristics using narrow flow channels subject with temperature gradient [PDF]
MATEC Web of Conferences, 2018 A thermoacoustic engine is one of promising system for utilization of unused energy. The object of this paper is to study the system of unused energy, such as heat energy and sound energy in noise using thermoacoustic engine. The thermoacoustic engine is
Kyoden Tomoaki
doaj +1 more source
Mitigation of artifacts due to isolated acoustic heterogeneities in photoacoustic computed tomography using a variable data truncation-based reconstruction method [PDF]
, 2017 Photoacoustic computed tomography (PACT) is an emerging computed imaging modality that exploits optical contrast and ultrasonic detection principles to form images of the absorbed optical energy density within tissue.
Anastasio, Mark A. +4 more
core +2 more sources
A Multi-Grid Iterative Method for Photoacoustic Tomography [PDF]
, 2016 Inspired by the recent advances on minimizing nonsmooth or bound-constrained convex functions on models using varying degrees of fidelity, we propose a line search multigrid (MG) method for full-wave iterative image reconstruction in photoacoustic ...
Holman, Sean, Javaherian, Ashkan
core +3 more sources
Numerical analysis of a standing-wave thermoacoustic refrigerator by one-dimensional simulation
Nihon Kikai Gakkai ronbunshu, 2018 In this paper, a numerical simulation for a standing-wave thermoacoustic refrigerator using the equations of conservation law are proposed. In this simulation, the gas flow in the thermoacoustic refrigerator is expressed by the quasi one-dimensional ...
Rin IRIE +4 more
doaj +1 more source
Photoacoustic Tomography in a Rectangular Reflecting Cavity [PDF]
, 2013 Almost all known image reconstruction algorithms for photoacoustic and thermoacoustic tomography assume that the acoustic waves leave the region of interest after a finite time.
Cox, B. T., Holman, B., Kunyansky, L.
core +2 more sources
Advanced Energy and Sustainability Research, Volume 7, Issue 3, March 2026.Hydrogen‐powered aviation offers a transformative pathway to zero‐emission flight by eliminating in‐flight CO2 emissions. Key considerations include propulsion systems (fuel cells and hydrogen combustion), cryogenic storage and insulation challenges, infrastructure and cost barriers, and supply‐chain constraints.
Mubasshira +4 more
wiley +1 more source
Aerospace, 2021 In the present work, 3D Unsteady Reynolds-Averaged Navier-Stokes (URANS) simulations are performed to investigate the generation and mitigation mechanism of combustion-sustained thermoacoustic instabilities in a modelled swirl combustor.
Yuze Sun, Dan Zhao, Xiaowei Zhu
doaj +1 more source