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Market-based coordination of price-responsive demand using Dantzig-Wolfe decomposition method

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Energy and AI 2023年第4期14卷 329-340页

作者： foad Naj.fi Matthias Fripp Department of Electrical Engineering University of Hawaii at Manoa2540 Dole StreetHonoluluHawaiiUnited States

The increasing penetration of Distributed Generation(DG)and Demand Responsive(DR)loads in power systems has necessitated the development of novel approaches to address the coordination problem of Price Responsive Devices(PRD).These PRDs are treated as self-interested players aiming to optimize their consumption patterns based on prevailing *** this paper,we propose a new algorithm based on the Dantzig-Wolfe(DW)Decomposition method,which tackles the coordination problem of self-interested PRDs in a distributed *** the distributed nature of the DW approach,we model the self-interested algorithms of PRDs as sub-problems within the DW *** coordinator,or grid operator,responsible for collecting the energy consumption information(energy bids)of PRDs,solves the master problem of the DW and determines the price signal *** proposed algorithm exhibits fast convergence as the sub-problems within DW,which could involve a large number of PRDs(potentially millions),can be solved ***,based on the DW theory,if the PRDs’subproblems are convex,reaching the optimal point(equivalent to Nash Equilibrium)is guaranteed within a limited number of *** evaluate the proposed model,we conducted a simulation involving 200 participant households,each equipped with two types of loads:Electric Vehicles(EVs)as examples of inter-ruptible loads,and Electric Water Heaters(EWHs)as examples of Thermostatically Controlled Loads(TCLs).The results demonstrate that when the algorithm converges to the optimal point,both the generation cost and user payment(based on the marginal cost of generation)***,there is a significant reduction in the Peak to Average Ratio(PAR)of the aggregate load.

关键词： Demand-side management(DSM) Distributed optimization Dantzig-Wolfe algorithm Price responsive devices(PRD) Appliance coordination

A dicationic,podand-like,ionic liquid water system accelerated copper-catalyzed azide-alkyne click reaction

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Chinese Chemical Letters 2014年第12期25卷 1643-1647页

作者： Mohammad j.vaherian foad Kazemi Masoumeh Ghaemi Department of Chemistry College of ScienceShahid Chamran University Department of Chemistry University for Advanced Studies in Basic Sciences

In this work,an effective,task specific,dicationic,podand-like ionic liquid was synthesized and applied to improve the capability features of click ***,to broaden the scope and decreasing the serious limitations of preparation methods of organic azides,a simple green procedure for the preparation of alkyl azides,the fundamental starting materials in click reactions,from alcohols under solvent-free conditions and microwave irradiation has been reported,for the first time.

关键词： Dicationic ionic liquid Click chemistry 1 2 3-Triazoles Alkyl azides Alkynes Microwave irradiation

Strength properties of soft clay treated with mixture of nano-SiO_2 and recycled polyester fiber

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j.urnal of Rock Mechanics and Geotechnical Engineering 2015年第4期7卷 367-378页

作者： foad Changizi Abdolhosein Haddad Department of Civil Engineering Semnan University

This paper investigates the effect of recycled polyester fiber, produced from polyethylene （PET） bottles, in combination with nano-SiO2 as a new stabilizer to improve the mechanical properties of soils. We intend to study the effect of adding nano-SiO2 and recycled polyester fiber on soil engineering properties, especially the shear strength and unconfined compressive strength （UCS）, using clayey soil with low liquid limit. Three different combinations of fiber-soil ratios ranging between 0.1% and 0.5% as well as three different combinations of nano-soil ratios ranging between 0.5% and 1% are used. The shear strength and UCS of treated specimens are obtained from direct shear test and unconfined compression test, respectively. Results of this study show that the addition of recycled polyester fiber and nano-SiO2 increases the strength of soil specimens. Both the shear strength and UCS are improved by increasing the contents of recycled polyester fiber and nano-SiO2 in the soil mixture. The increase in the nano-SiO2 content leads to a reduction in failure strain, but the increase in the content of recycled polyester fiber leads to an increase in failure strain. The increase in the contents of recycled polyester fiber and nano-SiO2 leads to an increase in elastic modulus of soils. Based on the test results, the addition of recycled polyester fiber improves the mechanical properties of soils stabilized with nano-SiO2 as well as the recycled polyester fiber has a positive effect on soil behaviors.

关键词： Recycled polyester fiberNano-SiO2 Strength propertiesElastic modulus

Practical reduction of imines by NaBH_4/alumina under solvent-free conditions:An efficient route to secondary amine

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Chinese Chemical Letters 2008年第10期19卷 1167-1170页

作者： foad Kazemi Ali Reza Kiasat Ebrahim Sarvestani Institute for Advanced Studies in Basic Sciences(IASBS) Zanjan 45195Iran Chemistry Department College of ScienceShahid Chamran UniversityAhvaz 61357-4-3169Iran

Sodium borohydride supported on alumina reduces imines to the corresponding secondary amines in high to excellent isolated yields under solvent-free conditions. Noteworthy is that highly chemoselective reactions were ... 详细信息

关键词： Imine Secondary amine Solvent free Reduction Sodium borohydride

Simulation of particles settling in power-law fluids by combined lattice Boltzmann-smoothed profile methods

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International j.urnal of Sediment Research 2021年第5期36卷 637-655页

作者： Hamideh rouhani Tazangi Ataallah Soltani Goharrizi Ebrahim j.hanshahi j.varan Department of Chemical Engineering Shahid Bahonar University of Kerman Department of Mechanical Engineering Shahid Bahonar University of Kerman

In the current study, the settling, interaction, drafting, kissing, and tumbling of two identical and nonidentical circular particles were simulated in a two-dimensional box in shear-thinning, Newtonian,and shear-thickening fluids by using the combined lattice Boltzmann-smoothed profile ***, the drag coefficient of one particle settling for different power-law indexes and Archimedes numbers was calculated. Also, the effect of the diameter ratio of the two particle pairs was considered during settling. The developed method was validated by simulating the settling of one particle and two identical particles in a Newtonian fluid. To consider two non-identical particles, two cases were examined. In Case A, the larger particle was above the smaller one and in the Case B, the smaller particle was above the larger one. The results showed that the two non-identical particles were separated more easily than the identical ones. In the settling of two particles under the same Archimedes number, the drafting and kissing time considerably increased by changing the non-Newtonian fluid behavior from a shearthinning one to a shear-thickening one. Also, when the larger particle was above the smaller one, the time duration of the kissing stage increased with the decrease in the diameter ratio.

关键词： Lattice Boltzmann method Smoothed profile method DKT phenomenon Power-law fluids Particulate flow Drag coefficient

Sensitivity analysis of the vane length and passage width for a radial type swirler employed in a triple swirler configuration

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Theoretical & Applied Mechanics Letters 2019年第6期9卷 363-375页

作者： foad Vashahi Shahnaz Rezaei Reza Alidoost Dafsari j.ekeun Lee Fluid Engineering Laboratory Department of Mechanical System EngineeringGraduate School of Chonbuk National UniversityJeonjuSouth Korea Division of Mechanical System Engineering Chonbuk National UniversityJeonjuSouth Korea

The design of axial or radial swirlers typically governs a number of geometrical parameters that are determined by the desired flow *** the meantime,the number of unknown parameters increases with the number of concentrically mounted *** available literature is nonetheless limited,and designers are obligated to increase the number of initial *** this article,three kinds of triple swirlers are employed and simulations are performed to determine the effect of each parameter on the swirler *** on the correlation provided,overlengthening the radial vane length could result in significant changes in the flow field from the j.tlike pattern to a wide swirl-j.t angle due to the Coanda *** width should also have the potential to alter the swirl-j.t angle and velocity field at the exit of the swirler.

关键词： Triple swirler Swirler design Radial vane length Passage width Reynolds averaged Navier–Stokes

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二维表面声源模拟GPS实验算法的讨论

大学物理实验 2013年第3期26卷 48-49页

作者：姚赫明苗明川胡森北京航空航天大学北京100191

对实验的数据处理的方法进行讨论,将多种非线性方程组的数值解法应用于最终定位点的求解,给出不同算法结果的比较。

关键词： GPS 声源定位非线性方程