Droplet train impingement tests are generally conducted to mimic droplet-droplet and droplet-substrate interactions in advanced thermal engineering applications. In the presented study, experiments of such a kind are performed considering two target solid surfaces, namely, walls made of aluminium or glass, respectively. The related droplet spreading and splashing trends are investigated with a thermographic camera to shed some light on the thermal behaviours inside and outside of the droplet impact area for surface temperatures ranging between 140°C and 240°C.
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Adel Daoud1,2,3,4,*, Ali Cheknane2, Jean Michel Nunzi3,4, Afak Meftah1
FDMP-Fluid Dynamics & Materials Processing, Vol.18, No.6, pp. 1569-1579, 2022, DOI:10.32604/fdmp.2022.022091
（This article belongs to this Special Issue: Materials and Energy an Updated Image for 2021)
Abstract A solubility model for Merocyanine-540 dye together with the interface's electron transfer kinetics of MC-540/TiO2 has been investigated (Merocyanine 540-based dye has been used effectively in dye-sensitized solar cells). The highest absorption peaks were recorded at 489 nm and 493 nm in Water and Ethanol solvent, versus the vacuum phase which yielded 495 nm (associated with a modest electron injection-free energy value (ΔGinj) of -2.34 eV for both Water and Ethanol solvents). The time-dependent density functional theory (TD-DFT) method approach has been applied in this simulation. Additionally, the electronic structure and simulated UV-Vis spectra of the dye in different solvents… More >
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Prince Momar Gueye1,2,*, Siham Kamali-Bernard2, Dame Keinde1, Fabrice Bernard2, Vincent Sambou1
FDMP-Fluid Dynamics & Materials Processing, Vol.18, No.6, pp. 1581-1593, 2022, DOI:10.32604/fdmp.2022.022165
（This article belongs to this Special Issue: Materials and Energy an Updated Image for 2021)
Abstract Omni Processors (OP) are machines which use sludge as a fuel to generate electricity and clean water, but create ash at the same time. In the present study, fly ash and bottom ash are investigated as materials for potential reuse in the construction field. First, the granular size, density and Blaine finesse are determined. Then, the chemical composition and microstructure are obtained by means of X-ray fluorescence and Scanning Electron Microscopy-Energy Dispersive Spectroscopy (SEM-EDS), respectively. Finally, ashes reactivity is determined by two chemical methods (modified Chapelle test, bound water content R3) and a mechanical method (pozzolanic activity index). The characterization… More >
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ARTICLE
H. G. R. Sekloka1,2,*, C. P. Yabi2,3, R. Cloots1, M. Gibigaye2
FDMP-Fluid Dynamics & Materials Processing, Vol.18, No.6, pp. 1595-1605, 2022, DOI:10.32604/fdmp.2022.022434
（This article belongs to this Special Issue: Materials and Energy an Updated Image for 2021)
Abstract To contribute to the enhancement of unconventional local materials used for road construction, this study characterizes a crushed sand 0/5, a clayey soil and the litho-stabilized material without and with hydraulic binder and determines their use in accordance with some reference specifications (CEBTP 1984). It is shown that the different components are not usable alone in pavement base. Indeed, the plasticity index obtained for the clayey soil is 21%, a value higher than the imposed standards. In addition, the grading of the 0/5 crushed sand does not fit into the range proposed by CEBTP. A combination of these two (02)… More >
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Fahad Maoulida1,2, Kassim Mohamed Aboudou1,2,3,*, Djedjig Rabah2, Mohammed El-Ganaoui2
FDMP-Fluid Dynamics & Materials Processing, Vol.18, No.6, pp. 1607-1617, 2022, DOI:10.32604/fdmp.2022.023199
（This article belongs to this Special Issue: Materials and Energy an Updated Image for 2021)
Abstract In this work, we present a feasibility study for a new hybrid power plant (PV-Wind-Diesel-Storage) directly connected to the electrical grid. Several simulations are performed to verify the performance of the hybrid system under different scenarios using real meteorological data. It is shown that the performances of the hybrid system connected to the electrical network depend obviously on the available energy resources and constraints because the renewable energies are intermittent. In addition, the price of the kWh of electricity supplied by the hybrid system is determined, which amounts to $0.209/kWh, which is very cost effective and satisfactory for the considered… More >
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Khaled Said*, Ahmed Ouadha, Amina Sabeur
FDMP-Fluid Dynamics & Materials Processing, Vol.18, No.6, pp. 1619-1629, 2022, DOI:10.32604/fdmp.2022.022220
（This article belongs to this Special Issue: Materials and Energy an Updated Image for 2021)
Abstract The present study deals with double-diffusive convection within a two-dimensional inclined cavity filled with an air-CO2 binary gas mixture. The left and the right vertical walls are differentially heated and subjected to different locations of (CO2) contaminants to allow for the variation of the buoyancy strength (N). However, the horizontal walls are assumed adiabatic. The simulations are conducted using the finite volume method to solve the conservation equations of continuity, momentum, energy, and species transport. Good agreement with other numerical results in the literature is obtained. The effect of multiple parameters, namely, buoyancy ratio (N), thermal Rayleigh number (Ra), and… More >
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ARTICLE
Rida Tazi1, Adil Echchelh1, Mohammed El Ganaoui2, Aouatif Saad3,*
FDMP-Fluid Dynamics & Materials Processing, Vol.18, No.6, pp. 1631-1638, 2022, DOI:10.32604/fdmp.2022.021975
（This article belongs to this Special Issue: Materials and Energy an Updated Image for 2021)
Abstract Unlike most fluids, granular materials include coexisting solid, liquid or gaseous regions, which produce a rich
variety of complex flows. Dense flows of grains driven by gravity down inclines occur in nature and in industrialprocesses. To describe the granular flow on an inclined surface, several studies were carried out. We can cite in
particular the description of Saint-Venant which considers a dry granular flow, without cohesion and it only takes
into account the substance-substrate friction, this model proposes a simplified form of the granular flow, which
depends on the one side on the angle of inclination of the substrate with… More >
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REVIEW
Pierre-Frédéric Villard1,*, Maureen Boudart2, Ioana Ilea3, Fabien Pierre1
FDMP-Fluid Dynamics & Materials Processing, Vol.18, No.6, pp. 1639-1648, 2022, DOI:10.32604/fdmp.2022.021726
（This article belongs to this Special Issue: Materials and Energy an Updated Image for 2021)
Abstract Industrial woven meshes are composed of metal materials and are often used in construction, industrial and residential activities or applications. The objective of this work is defect detection in industrial fabrics in the quality control stage. In order to overcome the limitations of manual methods, which are often tedious and time-consuming, we propose a strategy that can automatically detect defects in micrometric steel meshes by means of a Convolutional Neural Network. The database used for such a purpose comes from real problem data for anomaly detection in micrometric woven meshes. This detection is performed through supervised classification with a Convolutional… More >
Open Access
ARTICLE
Shaozhen Cheng1,2,3,*, Tielin Chen1, Zizhou Xue3, Kang Zhu3, Jianke Li3
FDMP-Fluid Dynamics & Materials Processing, Vol.18, No.6, pp. 1649-1665, 2022, DOI:10.32604/fdmp.2022.018789
（This article belongs to this Special Issue: Advanced Materials, Processing and Testing Technology)
Abstract Fracture grouting is widely used for building foundation reinforcement, however the underpinning mechanisms are still not clear. Using numerical results about a single-hole fracture grouting process as a basis, a model composed of soil and grouting veins has been created to analyze the reinforcement mechanism. The influence weights of the grouting vein skeleton and compaction effect have been studied, thereby obtaining relevant information on the compressive modulus of the considered composite soil. The research results show that the compaction effect plays a leading role in the soil fracture grouting reinforcement. The grouting pressure, the hardened grouting vein modulus, and the… More >
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ARTICLE
Dehui Tong1,2, Shunshun Qin1,2,*, Quan Liu1,2, Yuhan Li3, Jiewei Lin2,3
FDMP-Fluid Dynamics & Materials Processing, Vol.18, No.6, pp. 1667-1682, 2022, DOI:10.32604/fdmp.2022.019768
Abstract Avoiding cavitation inside the water jacket is one of the most important issues regarding the proper design of a
diesel engine’s cylinder liner. Using CFD simulations conducted in the frame of a mixture multiphase approach, a
moving grid technology and near-wall cavitation model, in the present study the factors and fluid-dynamic patterns that influence cavitation are investigated from both macroscopic and mesoscopic perspectives. Several factors are examined, namely: wall vibration, water jacket width, initial cavitation bubble radius, coolant
temperature, and number of bubbles. The results show that reducing the cylinder liner vibration intensity can
significantly weaken the cavitation. Similarly, increasing… More >
Open Access
ARTICLE
Anoir Souissi1,*, Imen Guidara1, Maher Chaabene1, Giuseppe Marco Tina2, Moez Bouchouicha3
FDMP-Fluid Dynamics & Materials Processing, Vol.18, No.6, pp. 1683-1698, 2022, DOI:10.32604/fdmp.2022.022051
（This article belongs to this Special Issue: Materials and Energy an Updated Image for 2021)
Abstract The accurate forecast of the photovoltaic generation (PVG) process is essential to develop optimum installation sizing and pragmatic energy planning and management. This paper proposes a PVG forecast model for a PVG/Battery installation. The forecasting strategy is built on a Medium-Term Energy Forecasting (MTEF) approach refined dynamically every hour (Dynamic Medium-Term Energy Forecasting (DMTEF)) and adjusted by means of a Short-Term Energy Forecasting (STEF) strategy. The MTEF predicts the generated energy for a day ahead based on the PVG of the last 15 days. As for STEF, it is a combination between PVG Short-Term (ST) forecasting and DMTEF methods obtained… More >
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