Computational and Experimental Research in Materials and Renewable Energy (CERiMRE)
Computational and Experimental Research in Materials and Renewable Energy (CERiMRE) journal receives scientific articles of experimental and/or computational research that using many tools and methods as computational methods (Micromagnetic simulation, DFT Density Functional Theory, MD molecular dynamics, CFD computational fluid dynamics, MC Monte Carlo, FEM finite element method, transport neutron equation, etc) and standard experimental tools and analysis (FTIR, XRD, EDAX, bending test, etc) to develop potential applications of new materials and renewable energy sources. The materials and renewable energy under investigation may show: Prediction of material properties for new potential applications as electronics materials, photonics materials, magnetic materials, spintronics materials, optoelectronics materials, nuclear materials, thermoelectric materials, etc. Exploration of new design of renewable energy resources as in nuclear power plants, solar cell, fuel cells, biomass, thermoelectric generators, nuclear batteries, wind, wave, geothermal, etc.
Articles
55 Documents
<![CDATA[Effect Of TiO2 Addition On The Electrical Conductivity Of Nylon-TiO2 Hybrid Membrane ]]>
<![CDATA[Nurul Octavia Hijriyatur Rohmah]]>
<![CDATA[ Computational And Experimental Research In Materials And Renewable Energy Vol 3 No 2 (2020): November ]]>
Publisher : <![CDATA[Physics Department, Faculty of Mathematics and Natural Sciences, University of Jember ]]>
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DOI: 10.19184/cerimre.v3i2.23544
<![CDATA[Current membrane technology has developed rapidly in industrial commercial interests. This has led to various studies, especially on membrane raw material innovation. Research on the measurement of electrical conductivity on nylon-TiO2 hybrid membranes has been carried out. This study aims to determine the addition of the right TiO2 mass fraction based on the electrical conductivity value. The variations in the concentration of TiO2 used were 0.5%, 1%, 3%, 5%, and 7% (w/v). The nylon-TiO2 hybrid membrane was prepared using the phase inversion method. The measurement of the electrical conductivity of the hybrid membrane was carried out using the parallel plate method. The measurement results of the nylon-TiO2 hybrid membrane showed that the electrical conductivity of the hybrid membrane increased with the addition of the mass fraction of TiO2, from (0.66 ± 0.04) × 10-9 S / cm for nylon membrane to (9.15 ± 5.71) × 10-9 S / cm for additionalmass fraction of TiO2 5% (w/v). Meanwhile, onadditionThe mass fraction of TiO2 7% (w / v) causes the electrical conductivity of the hybrid membrane to decrease, by obtaining an electrical conductivity value of(2.31 ± 0.45) × 10-9 S / cm]]>
<![CDATA[Effect of Write Head Movement On Magnetic Spin Domain Reversal of Nanocube Co/Pd Alloy Material Using Micromagnetic Simulation ]]>
<![CDATA[Ilham Heru Baskoro]]>;
<![CDATA[Merinda Lestari]]>
<![CDATA[ Computational And Experimental Research In Materials And Renewable Energy Vol 2 No 1 (2019): May ]]>
Publisher : <![CDATA[Physics Department, Faculty of Mathematics and Natural Sciences, University of Jember ]]>
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DOI: 10.19184/cerimre.v2i1.20556
<![CDATA[An analysis of the effect of the write head movement on the reversal time of the domain spin with magnetic Co/Pd on the magnetic recording layer has been carried out through micromagnetic simulation. The magnetic recording layer is modeled in the form of cubes (nanocubes) which consists of 5 domain spin. The write head, which is a transduser, moves along the domain spin to write data in the form of magnetic spins, which represent the bits on the magnetic recorder perpendicular. The results of this simulation are a profile of changes in the total magnetic field and reversal time of the domain spin when writing magnetic data for 6 nanoseconds. The calculation used in this study is an analytical calculation regarding the reversal time of the magnetic domain spin of the Co/Pd alloy material. The formulation for calculating the reversal time of domain-spin magnetization is a combination of graphical analysis and analytical calculations with visualization of the magnetic spin configuration that consisting of 5 domains spin. This simulation was carried out using the finite element method and obtained a saturation 5 field value of the magnetic alloy Co/Pd (Hs) material of 2.5 x 105 A/m and a write head (Hwh) field that 6 must be applied to the magnetic recording layer in order to reverse the uniform domain spin is 7.3 x 106 A/m. Each size of the domain spin requires a different write head, the smaller the nanocube size, the greater the write head field applied to the magnetic recording layer. Meanwhile, the effective write head 6 field amplitude that is suitable for the 20 nm domain spin is 8.3 x 106 A/m. A significant change in the total field occurs when the domain spin reverses 3 times in the first domain spin (n1), the third domain spin (n3) and the fifth domain spin (n5). The total field value when t=0.42 ns ( first domain spin reversal) is 73.69376 A/m, then the total field at t=0.42 ns (third domain spin reversal) is 3443.197 A/m and the current total field t=0.42 ns (fifth domain spin reversal) of 5480.696 A/m.]]>
<![CDATA[Characterization of Carbon Derived from Water Hyacinth as a Renewable Energy Sources ]]>
<![CDATA[Rani Kusumaningtyas]]>;
<![CDATA[Wenny Maulina]]>;
<![CDATA[Supriyadi Supriyadi]]>
<![CDATA[ Computational And Experimental Research In Materials And Renewable Energy Vol 1 No 1 (2018): November ]]>
Publisher : <![CDATA[Physics Department, Faculty of Mathematics and Natural Sciences, University of Jember ]]>
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DOI: 10.19184/cerimre.v1i1.19543
<![CDATA[An alternative renewable energy sources, such as biomass, can be produced using the combustion process inside the furnace. In this work, carbon derived from water hyacinth be produced through carbonization process. The carbonization of water hyacinth was carried out at different temperature i.e. 400°C, 500°C and 600°C and subsequently analyzed with the SEM-EDX to determine the microstructure and atomic percentage of present elements. While the FTIR analysis was conducted to qualitatively verify the surface functional groups of carbon. The results of SEM-EDX analysis showed that the pores began to form at a carbonization temperature of 600°C and carbon content increased with increased temperature of carbonization process. FTIR analysis results showed that the functional groups in the carbon derived from water hyacinth had an absorption pattern with OH, C-H, C-O, and C=C bonds.]]>
<![CDATA[Analysis Curie Temperature and Hysteresis La0,7Sr0,3MnO3 with Micromagnetic Simulation ]]>
<![CDATA[Muhamad Rony Febiantoro]]>;
<![CDATA[Lutfi Rohman]]>;
<![CDATA[Sutisna Sutisna]]>
<![CDATA[ Computational And Experimental Research In Materials And Renewable Energy Vol 3 No 2 (2020): November ]]>
Publisher : <![CDATA[Physics Department, Faculty of Mathematics and Natural Sciences, University of Jember ]]>
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DOI: 10.19184/cerimre.v3i2.23545
<![CDATA[Simulation reseach has been carried out to obtain the characteristic of material La0,7Sr0,3MnO3. The simulation method used atomistic of magnetic materials. Simulations were carried out using Vampire software Micromagnetic simulation were determine Curie temperature and Hysterisis Curve. The monte carlo algorithm was used in this reseach. Simulation were carried out by variation nanocube size 22 nm, 27 nm, and 32 nm. The simulation result show, Curie temperature show in 27 nm have the biggest value and stuck in that value. The characteristics of the Hysterisis curve 32 nm bigger than the others.From the simulation, it is found that the between the temperature and Hysteris curve. More temperature value, the smaller the Hysterisis curve.]]>
<![CDATA[Study of Phenomenon STT (Spin Transfer Torque) on Permalloy NiFe Material Shaped Nanowire Using Micromagnetic Simulation ]]>
<![CDATA[Khiptiatun Ni’mah]]>;
<![CDATA[Lutfi Rohman]]>;
<![CDATA[Endhah Purwandari]]>
<![CDATA[ Computational And Experimental Research In Materials And Renewable Energy Vol 2 No 1 (2019): May ]]>
Publisher : <![CDATA[Physics Department, Faculty of Mathematics and Natural Sciences, University of Jember ]]>
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DOI: 10.19184/cerimre.v2i1.20555
<![CDATA[STT is a process of controlling the spin currents in spintronic. This simulation aims to know the properties of NiFe permalloy materials' properties by studying STT phenomenon-shaped nanowire that can be applied in storage devices, like MRAM. The material's magnetic properties include magnetization value, energy in the ferromagnetic system, and the speed of the domain wall movement, obtained by injecting the electric current density through a micromagnetic simulation using the NMAG program. This simulation's result is that the domain wall's position will shift faster along the nanowire when we inject current density to the nanowire. Current density injection will produce a domain wall pressure on the domain structure, resulting in a change in the material's magnetization value. The graph of magnetization relation to time (M-t), shown along with the increasing electric current density, we obtain oscillation magnetization change will increase. The larger the given diameter, the total energy generated will increase, demagnetization energy tends to be greater than the energy exchange. The greater the polarization of the material provided at the same diameter, the speed of the domain wall movement will be greater too.]]>
<![CDATA[Analysis of Tensile Strenght and Shear Modulus of GRE Pipe using Ansys ]]>
<![CDATA[Dita Puspita]]>;
<![CDATA[Siti Lailatul Arofah]]>;
<![CDATA[Elok Hidayah]]>;
<![CDATA[Lutfi Rohman]]>;
<![CDATA[Ratna Dewi Syarifah]]>
<![CDATA[ Computational And Experimental Research In Materials And Renewable Energy Vol 1 No 1 (2018): November ]]>
Publisher : <![CDATA[Physics Department, Faculty of Mathematics and Natural Sciences, University of Jember ]]>
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DOI: 10.19184/cerimre.v1i1.19544
<![CDATA[Composite materials (GRE pipe) had been applied in various industries. These kind application are based on the advantages of composite properties, that are lightweight, high corrosion resistance and low cost. In order to make a lightweight and strong materials, some materials that light and stiff had been widely used, lie fiber glass, epoxy and the other. These materials (fiber glass and epoxy) are synthetic and non-biodegradable, but give some advantages in composite to make composite more stiff, light and strong. Mechanical properties of fiber glass composites had been doing based on theory through modeling. Theoretical results obtained showed that maximum stress and shear modulus value of GRE pipe are less than each components (glass fiber and epoxy resin). Each value of maximum stress and shear modulus are 584,57 MPa and 46,15 MPa.]]>
<![CDATA[The Flow Rate Characteristics of CO Gas Emissions Using Simflow 3.1 ]]>
<![CDATA[Eka Febriyani]]>;
<![CDATA[Nuroh Hidayati]]>
<![CDATA[ Computational And Experimental Research In Materials And Renewable Energy Vol 3 No 2 (2020): November ]]>
Publisher : <![CDATA[Physics Department, Faculty of Mathematics and Natural Sciences, University of Jember ]]>
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DOI: 10.19184/cerimre.v3i2.23546
<![CDATA[Carbon monoxide (CO) is a type of pollutant produced by industrial activities and is emitted through gas exhaust flues. Simulation activities are considered to provide a lot of information regarding the distribution of CO gas flow in the air. This paper will analyze the velocity and pressure distribution characteristics of CO gas to predict the accumulation of CO gas at various variations in the distribution distance of the gas. Simulation activities are carried out using SIMFLOW 3.1, a software capable of simulating fluid dynamics by emphasizing the ease of application. The simulation results show that the flow rate of CO gas is proportional to the amount of gas pressure generated at each distribution distance of the gas. The CO gas flow shows a fairly stable movement when identified at a distance of more than 30 m. This indicates that a mass of CO gas will be transmitted in the same amount over a distance of up to 70 m. The largest gas accumulation was obtained at a distance of 20 m from the source, which was indicated by the smallest gas flow velocity of 3.87 x 10-3 m/s.]]>
<![CDATA[Modeling of Ferrous Metal Diffusion in Liquid Lead Using Molecular Dynamics Simulation ]]>
<![CDATA[Ahmad Anwar Nuris]]>
<![CDATA[ Computational And Experimental Research In Materials And Renewable Energy Vol 2 No 1 (2019): May ]]>
Publisher : <![CDATA[Physics Department, Faculty of Mathematics and Natural Sciences, University of Jember ]]>
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DOI: 10.19184/cerimre.v2i1.20561
<![CDATA[Modeling of Iron metal diffusion in liquid lead using molecular dynamics simulation has been done. Molecular dynamics simulations are used to predict the value of physical quantities that we want to know based on the designed material model and on the input simulation data. In this research, effect of different geometry of material models was observed to know the diffusion coefficient. The material system was iron (Fe) in liquid lead (Pb). The material models is designed using Packmol software to get the initial configuration of atom's arrangement by inputting the material's characteristics such as mass, density, volume, number of atoms. This work examines the diffusion coefficient of iron in molten lead metal with the geometric shape of the simulation system in the form of iron in molten metal for various simulation models of boxes in a box, balls in a box and balls in balls. To design simulated geometric shapes we use the Packmol program. To calculate the diffusion coefficient we use the molecular dynamics simulation method. To find out which geometry is suitable, we compare the diffusion coefficient of the simulation results with existing references. The diffusion coefficient value of the spherical iron (Fe) system in the spherical liquid lead (Pb) has the best value compared to the other two forms with an accuracy rate of 99.94% because it is influenced by the even distribution of atoms in each part.]]>
<![CDATA[Comparative Analytic of Viscoelasticity Carbon, Glass, and Graphite Fiber Composite Using Maxwell Model ]]>
<![CDATA[Ro’sil Khohar]]>;
<![CDATA[Umi Sa’adah]]>;
<![CDATA[Dewi Azzahra Puspita]]>
<![CDATA[ Computational And Experimental Research In Materials And Renewable Energy Vol 1 No 1 (2018): November ]]>
Publisher : <![CDATA[Physics Department, Faculty of Mathematics and Natural Sciences, University of Jember ]]>
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DOI: 10.19184/cerimre.v1i1.19545
<![CDATA[The fulfillment of the need for materials with viscoelastic characteristics to be a supporting factor. The aim is to obtain composite materials with good viscoelasticity. Vinylester matrix composite materials with variations of graphite, glass, and carbon fibers were tested using FEA and Maxwell model. The simulated viscoelasticity of the isotropic, transverse, and mixed state of glass, carbon, and graphite fibers depends on the magnitude of modulus Young and Poisson's ratio. The most significant sequence value of viscoelasticity is in graphite fiber 10,4 GPa, carbon 5,5 GPa fiber, and glass fiber 3,78 GPa.]]>
<![CDATA[Study of Vortex Generator Effect on Airfoil Aerodynamics Using the Computational Fluids Dynamics Method ]]>
<![CDATA[Siti Aisyah Ayudia]]>;
<![CDATA[Artoto Arkundato]]>;
<![CDATA[Lutfi Rohman]]>
<![CDATA[ Computational And Experimental Research In Materials And Renewable Energy Vol 3 No 2 (2020): November ]]>
Publisher : <![CDATA[Physics Department, Faculty of Mathematics and Natural Sciences, University of Jember ]]>
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DOI: 10.19184/cerimre.v3i2.23547
<![CDATA[The lift force is one of the important factors in supporting the aircraft flying capabilities. The airplane has a section called the aircraft wing. In particular, the wing section of aircraft is called the airfoil. One of the efforts to increase the lift force is to make the flow of air fluid at the top of the airfoil more turbulent. Turbulent flow can attract momentum from the boundary layer, the result of this momentum transfer has energy that is more resistant to the adverse pressure gradient which can trigger the flow separation. Efforts that can be made to reduce separation flow and increase lift force are the addition of a turbulent generator on the upper surface of the airfoil, one type of turbulent generator is a vortex generator, a vortex generator can accelerate the transition from the laminar boundary layer to the turbulent boundary layer. This study was conducted with the aim of knowing the effect of the vortex generator on the aerodynamics of NACA-4412 using the computational fluid dynamics method. The main thing that will be investigated is the effect of the straight type vortex generator application on the lift coefficient, by comparing the plain airfoil and airfoil that has been applied to the vortex generator to vary the angle of attack. The variation of the angles of attack are 0º, 5º, 10º, 15º and the placement of the vortex generator is 24% of the leading edge. The results obtained that the lift coefficient changes with increasing angle of attack and the application of a vortex generator to an airfoil can increase the lift coefficient than a plain airfoil. The optimum increase in lift coefficient is at the angle of attack of 5º as much as 13%.]]>
