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Comprehensive modeling of frictional pressure drop during carbon dioxide two-phase flow inside channels using intelligent and conventional methods

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Chinese Journal of Chemical Engineering 2023年第11期63卷 108-119页

作者： Mohammad Amin Moradkhani Seyyed Hossein hosseini Mengjie Song Department of Chemical Engineering Ilam University69315-516 IlamIran Department of Energy and Power Engineering School of Mechanical EngineeringBeijing Institute of TechnologyBeijing 100081China

Environmentally friendly nature of CO_(2),associated with its safety and high efficiency,has made it a widely used working fluid in heat *** CO_(2)has strange thermophysical features,specific models are required to estimate its two-phase characteristics,particularly frictional pressure drop(FPD).Herein,a widespread dataset,comprising 1195 experimental samples for two-phase FPD of CO_(2)was adopted from 10 sources to fulfill this *** literature correlations failed to provide satisfactory precisions and exhibited the average absolute relative errors(AAREs)between 29.29% and 67.69% from the analyzed *** inspiring the theoretical method of Lockhart and Martinelli,three intelligent FPD models were presented,among which the Gaussian process regression approach surpassed the others with AARE and R^(2)values of 5.48% and 98.80%,respectively in the test stage.A novel simple correlation was also derived based on the least square fitting method,which yielded opportune predictions with AARE of 19.76% for all *** truthfulness of the newly proposed models was assessed through a variety of statistical and visual analyses,and the results affirmed their high reliability over a broad range of conditions,channel sizes and flow ***,the novel models performed favorably in describing the physical attitudes corresponding to two-phase FPD of CO_(2).Eventually,the importance of operating factors in controlling the FPD was discussed through a sensitivity analysis.

关键词： CO_(2) Two-phase flow Frictional pressuredrop Intelligent approaches Correlation

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Effect of Gaussian size distribution width on minimum fluidization velocity in tapered gas–solid fluidized beds

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Particuology 2022年第7期20卷 71-84页

作者： Mojtaba Rasteh Goodarz Ahmadi S.H.hosseini Department of Chemical Engineering Hamedan University of TechnologyHamedanP.O.Box 65155-579Iran Department of Mechanical and Aeronautical Engineering Clarkson UniversityPotsdamNY 13699-5725USA Department of Chemical Engineering Ilam UniversityIlam 69315-516Iran

This paper investigated the effect of Gaussian distribution width,average particle diameter,particle loading,and the tapered angle on minimum fluidization velocity(U_(mf))by conducting extensive experiments in tapered fluidized *** powders with Gaussian size distribution and different distribution widths were used in the *** increase in U_(mf)with increasing the average particle diameter,particle loading,and the tapered angle was *** was also a nonmonotonic behavior of Umf as the Gaussian distribution width *** empirical correlation including dimensionless groups for predicting Umf in tapered beds was developed in which the effect of distribution width was *** proposed correlation predictions were in good agreement with the experimental data,with a maximum deviation of 16.5%and average and standard deviations of,respectively,6.4%and 7.4%.The proposed correlation was also compared with three earlier models,and their accuracy was discussed.

关键词： Tapered fluidized bed Minimum fluidization velocity Gaussian size distribution Distribution width Dimensional analysis

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The Sharma-Tasso-Olver-Burgers equation:its conservation laws and kink solitons

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Communications in Theoretical Physics 2022年第2期74卷 1-8页

作者： K hosseini A Akbulut D Baleanu S Salahshour Department of Mathematics Near East University TRNCMersin 10Turkey Department of Mathematics-Computer Art-Science FacultyEskisehir Osmangazi UniversityEskisehirTurkey Department of Mathematics Faculty of Arts and SciencesCankaya UniversityAnkara 06530Turkey Institute of Space Sciences Magurele-BucharestRomania Faculty of Engineering and Natural Sciences Bahcesehir UniversityIstanbulTurkey

The present paper deals with the Sharma-Tasso-Olver-Burgers equation(STOBE)and its conservation laws and kink *** precisely,the formal Lagrangian,Lie symmetries,and adjoint equations of the STOBE are firstly constructed to retrieve its conservation *** solitons of the STOBE are then extracted through adopting a series of newly well-designed approaches such as Kudryashov and exponential *** graphs in 2 and 3D postures are formally portrayed to reveal the dynamical features of kink *** to the authors’knowledge,the outcomes of the current investigation are new and have been listed for the first time.

关键词： Sharma-Tasso-Olver-Burgers equation conservation laws Kudryashov and exponential methods kink solitons dynamical features

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A complex solution on the dynamic response of sandwich graphene-reinforced aluminum-based composite beams with copper face sheets under two moving constant loads on an elastic foundation

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International Journal of Mechanical System Dynamics 2023年第3期3卷 251-264页

作者： Mohammadreza Eghbali Seyed Amirhosein hosseini Department of Mechanical Engineering University of ZanjanZanjanIran Department of Industrial Mechanical and Aerospace EngineeringBuein Zahra Technical UniversityQazvinIran

An analytical solution was used to investigate the elastic response of a sandwich beam with a graphene-reinforced aluminum-based composite(GRAC)on an elastic foundation using copper as the face layer of the functionally graded composite beam and a simply supported boundary ***'s higher-order shear deformation theory was utilized to derive the equations,which were solved in Laplace space and then converted into space–time using Laplace *** exact response of the GRAC sandwich beam was obtained by considering the displacement at the mid-span of the sandwich *** moving loads with different speed ratios were applied at a single point,and the effect of various parameters,including the spring constant,the speed ratio,the percentage of graphene,the moving load speed,and the distribution pattern,was *** study aimed to eliminate any overlap and improve the accuracy of the *** exact solving method presented has not been reported in other articles so ***,due to the difficulty of solving mathematical equations,this method is only applicable to simple boundary conditions.

关键词： GRAC beams moving load Laplace transform elastic foundation analytical solution aluminum-based

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Assessment of assembly shape and geometric effects on amplification of shear waves using discrete element method

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Particuology 2022年第7期20卷 85-99页

作者： Leila Karbor Seyed Majdeddin Mir Mohammad hosseini Ahad Bagherzadeh Khalkhali Civil and Environmental Engineering Faculty Amirkabir University of TechnologyTehranIran Civil Engineering Faculty Science and Research BranchIslamic Azad UniversityTehranIran

The discrete element method(DEM)is a capable tool used to simulate shear wave propagation in granular assemblies for many *** have studied assembly shapes such as rectangles(in 2D simulations)or cylinders and cubes(in 3D simulations).This paper aimed to qualify the effect of assembly shape on the shear wave propagation and maximum amplification in the vertical plane(horizontal and vertical directions)caused by this *** this end,shear wave propagations in different assembly shapes such as rectangle,trapezium,and triangle with rigid boundary conditions were simulated.A sine wave pulse was applied with a point source by moving a particle as the transmitter *** evaluate the shear wave velocity of the assemblies,the transmitter and receiver particles were *** the simulations were performed with 2D DEM which is a useful tool to determine the amount and location of the maximum amplification factor of the assembly in both horizontal and vertical *** advantage of this study was assessing the effect of parameters such as input wave frequency,assembly height,shape,and aspect ratios on the amplification of the input waves.

关键词： Wave propagation Granular assembly DEM Assembly shape Shear wave

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Protective efficacy of dark chocolate in letrozole-induced ovary toxicity model rats: hormonal, biochemical, and histopathological investigation

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Journal of Traditional Chinese Medicine 2022年第5期42卷 741-748页

作者： Naser Mirazi Sheida Hesami Alireza Nourian Abdolkarim hosseini Department of Biology Faculty of Basic SciencesBu-Ali Sina UniversityHamedan ***Iran Department of Pathobiology Faculty of Veterinary ScienceBu-Ali Sina UniversityHamedan ***Iran Department of Animal Sciences and Biotechnology Faculty of Life Sciences and BiotechnologyShahid Beheshti UniversityTehran ***Iran

OBJECTIVE: To assess the protective effect of dark chocolate(DC) on the letrozole-induced rat model of polycystic ovary syndrome(PCOS). METHODS: In this experimental study, 32 female Wistar rats, weighing(200 ± 20) g, were randomly categorized into 4 groups including control, letrozole(1 mg·kg-1·d-1), metformin(500 mg·kg-1·d-1) along with letrozole, and DC(500 mg·kg-1·d-1) along with letrozole for 28 d by oral gavage. Twenty-four hours after the last supplementation, direct blood sampling was taken from the heart to obtain blood serum for evaluation of sex hormones and gonadotropins, oxidative parameters, inflammatory cytokines, and ovarian tissue was examined for histology. RESULTS: The DC treatment significantly improved PCOS signs, as demonstrated by the significant restoration of ovarian morphology and physiological functions as compared with the letrozole group. DC treatment also decreased ovarian interleukin-1β and tumor necrosis factor-α levels and improved total oxidative/antioxidative status as compared with the letrozole group. CONCLUSIONS: Treating the animals with DC could alleviate the PCOS symptoms and reduced the toxic effects of letrozole in the ovary. This effect may mediate through antioxidant and antiinflammatory properties.

关键词： chocolate letrozole metformin polycystic ovary syndrome antioxidants anti-inflammatory agents

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Impacts of COVID-19 Pandemic on Italian Electricity Demand and Markets

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CSEE Journal of Power and Energy Systems 2023年第2期9卷 824-827页

作者： Mahmood hosseini Imani Ettore Bompard Pietro Colella Tao Huang Politecnico di Torino Dipartimento EnergiaTurin10129Italy

In this paper,the short-,medium-,and long-term effects of the COVID-19 pandemic on the Italian power system,particularly electricity consumption behavior and electricity market prices,are investigated by defining various *** investigation reveals that COVID-19 lockdown caused a drop in load consumption and,consequently,a decrement in day-ahead market prices and an increase in ancillary service prices.

关键词： Ancillary service market price COVID-19 day-ahead market price Italian electricity markets load consumption

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Strain Geometry and Vorticity Analysis of the Deformed Radiolarian Rocks in the Abade-Tashk Area,the Zagros Suture Zone,Iran

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Journal of Earth Science 2022年第2期33卷 525-540页

作者： Roghyeh Tavakkoli Khalil Sarkarinejad Saeede Keshavarz Seyed Rahim hosseini Department of Earth Sciences School of ScienceShiraz UniversityShiraz ***Iran Department of Earth Sciences Graduate University of Advanced TechnologyKerman ***Iran

Deformation in the Zagros suture zone is a result of the oblique collision of the AfroArabian continent with the Central Iranian *** types of folding and faulting are characteristic features of the study area and indicate the performance of a high strain tectonic regime in this *** distinguish deformation geometry during the collisional events,strain measurements have been carried out,using the R_(f)/φ method on deformed radiolarian microfossils,in the Zagros suture *** on the results,the strain ellipsoid shape is in the range of general flattening to plane strain(K=0.16 – 1.12).Measured mean kinematic vorticity number(W_(m)) in the deformed radiolarian rocks ranges between 0.50 and 0.87,which implies that exhumation of the Abade-Tashk area was facilitated by a general shear flow(35%

关键词： transpression Zagros suture zone deformed radiolarian microfossils vorticity analysis Abade-Tashk area tectonicstranspression Zagros suture zone deformed radiolarian microfossils vorticity analysis Abade-Tashk area tectonics

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Techno-economic-environmental comparison of floating photovoltaic plant with conventional solar photovoltaic plant in northern Iran

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Clean Energy 2022年第2期6卷 353-361页

作者： Sina Semeskandeh Mehrdad Hojjat Mohamad hosseini Abardeh Department of Electrical and Computer Engineering Shahrood BranchIslamic Azad UniversityShahroodIran

Photovoltaic(PV)systems can be used to generate electricity due to the potential for solar energy in *** floating photovol-taic(FPV)systems is a new approach to utilizing PV systems in *** of Iran’s energy consumption is supplied from fossil fuels,especially oil and *** recent years,Iran has faced environmental problems and air *** generation using fossil fuels has led to increased environmental ***,PV systems can be used to generate electricity due to the potential for solar energy in *** interest in predicting the energy production of PV power plants has increased in recent *** this regard,the techno-economic-environmental study of constructing PV power plants is a basic process to encourage people to use solar energy.A techno-economic-environmental feasibility study has been performed to construct a 5-kW FPV and ground PV(GPV)power plant in a northern city of ***,the FPV system is compared with the ground PV system using MATLAB^(■)Simulink and RETScreen^(■)*** this study,the effects of wind and water temperature have been ***,a sensitivity analysis was performed due to the uncertainty in climatic conditions and the amount of PV energy *** simulation results show that due to the cooling effect for panels in the FPV system,the production capacity and panels’efficiency are respectively 19.47%and 27.98%higher than the those of the GPV *** addition,the FPV system was found to have a 16.96%increase in the annual performance ***,using the FPV system reduces the equity payback to 6.3 years(a 22.2%reduction compared to the GPV power plant).

关键词： photovoltaic solar energy floating feasibility environmental

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Techno-economic-environmental feasibility study of a photovoltaic system in northern part of Iran including a two-stage multi-string inverter with DC-DC ZETA converter and a modified P&O algorithm

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Clean Energy 2022年第1期6卷 127-140页

作者： Sina Semeskandeh Mehrdad Hojjat Mohamad hosseini Abardeh Department of Electrical and Computer Engineering Shahrood BranchIslamic Azad UniversityShahroodIran

Inverters play a significant role in the configuration of grid-connected photovoltaic(PV)*** perturb-and-observe(P&O)algorithm is a common method to derive the maximum power from grid-connected inverters;however,the possibility of losing maximum power due to sudden changes in radiation is a significant drawback of this control *** overcome this barrier,the two-stage multi-string inverter using the ZETA DC-DC converter and a novel P&O algorithm has been proposed to increase the efficiency of these *** proposed inverter has been simulated in MATLAB/SIMULINK *** investigate the performance of the proposed inverter,technical,environmental and economic feasibility studies have been performed for the construction of a 5-kW PV power plant in a northern city of Iran(Sari)using the RETScreen software developed by Natural Resources *** the other hand,most feasibility studies for power-plant construction are based on the concept of inverter peak efficiency,which leads to non-optimal system design due to the short operation duration of the inverter at this ***,the weighted European efficiency has been used in the feasibility study for more accurate ***,the performance of the proposed inverter is compared to that of a two-stage multi-string inverter using a conventional P&O algorithm and the single-stage(central)*** simulation results indicated that the proposed inverter injects 7.6 MW of power into the grid per ***,it prevents the emission of 88 tons of CO_(2)(over 20 years),which is equivalent to saving 1883.5 litres of gasoline per year.

关键词： photovoltaic environmental inverter grid-connected feasibility P&O algorithm

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