This study delves into the interplay between magnetic fields, heat transfer, and fluid behavior within a 3D mini-channel. Exploring the effects of a magnetic field on a hybrid nanofluid (Fe3O4–TiO2) under varying ...
This article discusses the behavior of specific dispersive waves to new (3+1)-dimensional Hirota bilinear
equation (3D-HBE). The 3D-HBE is used as a governing equation for the propagation of waves in fluid
dynamics. The ...
This study delves into an extensive investigation of the thermophysical properties and heat transfer efficacy of a
hybrid nanofluid incorporating graphene nanoplatelets and γ-Al2O3 nanoparticles dispersed in deionised ...
Chae, Younghwan; Wilke, Daniel Nicolas; Kafka, Dominic(Springer, 2023-06)
Mini-batch sub-sampling (MBSS) is favored in deep neural network training to reduce the computational cost. Still, it introduces an inherent sampling error, making the selection of appropriate learning rates challenging. ...
De Beer, Jan Hendrik; Le Roux, Willem Gabriel; Sciacovelli, Adriano; Meyer, Josua P.(Elsevier, 2023-05)
A recuperated solar-dish Brayton cycle using an off-the-shelf turbocharger as a micro-turbine and a rectangular cavity receiver with integrated thermal storage is considered in this study. Due to the high temperatures that ...
Noah, Olugbenga Olanrewaju; Slabber, Johan F.M.; Meyer, Josua P.(American Society of Mechanical Engineers, 2023-07)
The development of an accident tolerant nuclear fuel for water-cooled reactors would redefined the status of these reactors from traditional active safety to passive safety systems. As a possible solution toward enhancing ...
Hassanlue, Sina; Mukhtar, Azfarizal; Yasir, Ahmad Shah Hizam Md; Eldin, Sayed M.; Nazari, Mohammad A.; Ahmadi, Mohammad Hossein; Sharifpur, Mohsen(Elsevier, 2024-03)
Exhaust gases from the smelting furnace have high temperature and mass flow rate, and there is huge potential to use them for energy-related purposes such as electricity generation, cooling and heating. Utilization of the ...
Kat, Cor-Jacques; Grabe, Roland Peter; Van Staden, Paul Jacobus; Botha, Tanita; Els, P.S. (Pieter Schalk)(Taylor and Francis, 2024)
Not only is it important to know how large the overall change in vibration should be for occupants to perceive an improvement in comfort, but also how large this change should be in specific frequency bands. Relative ...
Utilizing latent heat thermal energy storage (LHTES) units shows promise as a potential
solution for bridging the gap between energy supply and demand. While an LHTES unit benefits
from the latent heat of the high-capacity ...
Bouwer, Johann M.; Wilke, Daniel Nicolas; Kok, Schalk(MDPI, 2023-04)
This research compares the performance of space-time surrogate models (STSMs) and
network surrogate models (NSMs). Specifically, when the system response varies over time (or
pseudo-time), the surrogates must predict the ...
Joubert, Johannes Christoffel; Wilke, Daniel Nicolas; Pizettem, Patrick(MDPI, 2023-04)
This work describes a post-processing scheme for multiphase flow systems to characterize
primary atomization. The scheme relies on the 2D fast Fourier transform (FFT) to separate the
inherently multi-scale features present ...
Ramatlo, Dineo A.; Wilke, Daniel Nicolas; Loveday, Philip W.(MDPI, 2023-04)
Guided wave ultrasound (GWU) systems have been widely used for monitoring structures
such as rails, pipelines, and plates. In railway tracks, the monitoring process involves the complicated
propagation of waves over ...
Joubert, Johannes Christoffel; Wilke, Daniel Nicolas; Pizette, Patrick(MDPI, 2023-04)
This paper presents a GPU-based, incompressible, multiphase generalized finite difference
solver for simulating multiphase flow. The method includes a dampening scheme that allows for
large density ratio cases to be ...
Swanepoel, Jonathan Kyle; Le Roux, Willem Gabriel; Roosendaal, Casey; Madani, Seyed H.; De Wet, Gideon Jacobus; Nikolaidis, Theoklis; Roosendaal, Westley; Onorati, Chase; Sciacovelli, Adriano; Liu, Yize; Mokobodi, Tlou; McGee, Duncan S.; Craig, K.J. (Kenneth)(Elsevier, 2024-07)
The Solar Turbo Combined Heat and Power (ST-CHP) project developed a novel solar-gas hybrid prototype for combined heat and power generation in Pretoria, South Africa. A vacuum-membrane faceted parabolic dish with a ...
Microelectromechanical system of electrostatic energy harvesters is modeled
using a nonlinear state–space approach in this research. The analytical models of
in-plane overlap, in-plane gap closing, and their compound ...
Sharma, Jeet Prakash; Kumar, Ravinder; Ahmadi, Mohammad H.; Mukhtar, Azfarizal; Md Yasir, Ahmad Shah Hizam; Sharifpur, Mohsen; Ongar, Bulbul; Yegzekova, Anara(Elsevier, 2023-11)
Ceria-based H2O/CO2-splitting solar-driven thermochemical cycle produces hydrogen or syngas. Thermal
optimization of solar thermochemical reactor (STCR) improves the solar-to-fuel conversion
efficiency. This research ...