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162 articles for “Steady-state”
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Aspen HYSYS Simulation of Suspension (Slurry) Process for the Production of Polyethylene
Abstract: AbstractThis study deals with the steady state simulation of polyethylene plant using Aspen HYSYS V10 simulation model. Looped reactor model is used to mimic the behaviour of the suspension (slurry) polymerization process. Effect of various operating conditions like the inflow rate of the monomer ethylene on solvent, catalyst, co-monomer and hydrogen flow rate are studied. Model predicted that the change in monomer flow rate linearly affected the process variables. Keywords: …
Published in Journal of Polymer & Composites · Vol. 6, Issue 3, 2018 · pp. 31–34 Read article
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Motors Using a Deep Learning-Based Torque Control with Torque Ripple Reduction under Nonlinear Magnetic Conditions
Abstract: This research discusses a deep learning strategy for torque management to minimize the effect of torque ripple in a nonlinear electric motor. Nonlinear electric motor losses may include: magnetic saturation, harmonic flux losses and inverter losses. In many cases when the system parameters deviate and/or instability issues occur, the traditional method with a model-based approach or PI control may encounter challenges. In this case, the authors proposed a hybrid approach …
Published in International Journal of Advanced Control and System Engineering · Vol. 4, Issue 2, 2026 Read article
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Grid-Connected Wind-Solar Hybrid System Analysis Using ETAP
Abstract: The Increasing integration of renewable energy sources in practice needs a thorough electrical performance assessment to guarantee reliable and stable operation of grid system. This work focuses on the modeling, simulation, and steady-state performance analysis of grid-connected wind-solar hybrid system through ETAP 19.0.1C. The suggested configuration is composed of 34.5 kV utility grid, eight units of wind turbine generators whose total installed capacity is 2.55 MW, six photovoltaic arrays, one …
Published in International Journal of Electrical Power and Machine Systems · Vol. 4, Issue 2, 2026 Read article
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Thermo-hydraulic Performance of Multi-Pass Double-Pipe Heat Exchangers: Integrating Polymer Composite Tube Wall Materials via CFD Parametric Study and Experimental Validation
Abstract: Metallic materials such as steel and copper have traditionally dominated heat exchanger manufacturing because of their excellent thermal conductivity, mechanical strength, and long-established industrial reliability. However, their high weight, susceptibility to corrosion in aggressive operating environments, and inability to provide tunable thermal properties have motivated interest in alternative materials for next-generation thermal systems. Thermally conductive polymer composites reinforced with graphene nanoplatelets (GNP), boron nitride (BN), and carbon-based fillers offer an …
Published in Journal of Polymer & Composites · Vol. 14, Issue 5, 2026 Read article
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Grid Sensitivity and Its Impact on the Hydrodynamics of a Submerged Vessel
Abstract: Accurate prediction of hydrodynamic characteristics is essential for the design and performance assessment of underwater vehicles and offshore structures. Computational fluid dynamics (CFD) has emerged as an effective tool for analyzing fluid flow behavior around submerged bodies, enabling detailed evaluation of pressure distribution, drag forces, and flow patterns. In this study, the effect of mesh refinement on the hydrodynamic analysis of a DRDC-STR submarine nose section was investigated using ANSYS …
Published in Journal of Offshore Structure and Technology · Vol. 13, Issue 2, 2026 · pp. 1–8 Read article
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Wind Pressure Analysis on the Selected Structure Using IS 875 (Part 3) 2015 and CFD (Computational Fluid Dynamics)
Abstract: Wind-induced pressure plays a significant role in the safety and serviceability of tall buildings, slender vertical structures, and signboard hoardings. Currently, computational fluid dynamics (CFD) has become an effective supplemental tool in the analysis of the interaction of wind and structures. This paper presents a unified comparative study integrating multiple investigations various modal (ⅰ) Tall rectangular building (50 m × 50 m × 150 m), (ⅱ) Rectangular Building (18 m …
Published in Journal of Offshore Structure and Technology · Vol. 13, Issue 2, 2026 · pp. 70–80 Read article
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Experimental Analysis and Validation of Cellulose Fibre Insulation Structures Considering Thermal Properties
Abstract: Cellulose fibre insulation structures made from used newspaper can be installed in attics, filling gaps between doors and windows. Many researchers focused on loose-filled cellulose fibre insulation. This study investigates the thermal conductivity, R- Value and thermal transmittance of cellulose fibre insulation manufactured from recycled cellulose materials with densities ranging from 280 to 360 kg / m³ and specimen thicknesses of 10 – 30 mm. A total of 25 structures …
Published in Journal of Polymer & Composites · Vol. 14, Issue 5, 2026 Read article
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Emergent and Self Organizing behavior in Heat Diffusion Model
Abstract: Abstract-Heat Diffusion equation is used to determine thechange in the function of u over time. We try to discuss different experimental parameters from an existent heat diffusion model given by Netlogo for simulation of steady-state temperature distribution of a thin plate as the model shows complex behavior when we change the temperature of the sides to different levels. In addition, we try to modify the model and discuss how emergence …
Published in Journal of Software Engineering Tools & Technology Trends · Vol. 4, Issue 3, 2017 · pp. 17–22 Read article
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The Thermal Physical Phenomenon of Some Native Wood Species in Nigeria
Abstract: The Determination of the thermal conductivity of some selected local wood species from measurement of necessary parameters required in its determination were performed using the Lee's disc method of measuring the thermal conductivity of a poor conductor in the form of a flat disc. Five hardwood species commonly patronized by timber contractors, builders, woodcarvers and cabinet-makers in Ile-Ife town, Nigeria were selected. The steady state method was employed in this …
Published in Journal of Thermal Engineering and Applications · Vol. 1, Issue 3, 2014 · pp. 19–25 Read article
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Thermal Performance Analysis of Flat Plate Solar Collector and Solar Dryer of Indirect Solar Drying System
Abstract: The objective of this study is to investigate the thermal performance of a flat plate solar collector and solar dryer experimentally. The expressions for efficiency of solar collector andsolar dryer with phase change material (PCM) storage system in quasi-steady state conditions have been derived. The analysis is based on the basic energy balance forthe system. A computer model has been developed to predict the various performance parameters of the solar …
Published in Journal of Thermal Engineering and Applications · Vol. 2, Issue 3, 2015 · pp. 21–31 Read article
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Analysis and Testing Methods for Solar Thermal Evacuated Tube Collector: A Review
Abstract: Evacuated tube receiver used with parabolic trough collector can be characterized in terms of their heat loss and their optical efficiency. The optical efficiency of the collector involves reflectivity, transmissivity, tracking accuracy, shading by receiver tube surface, shape and absorptance of the material used. On the other hand, receiver tube heat loss includes conductive, convective and radiative losses. Here, in case of evacuated tube, major losses are through radiation, the …
Published in Journal of Thermal Engineering and Applications · Vol. 4, Issue 1, 2017 · pp. 1–4 Read article
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First Law Analysis of Adsorption Cooling System
Abstract: Steady state thermodynamic differential analysis is developed for the adsorption-based cooling systems. The introduced thermodynamic model represents the behaviour of adsorption cooling systems, based on a precise, reasonable, and clear fundamental approach. The energy conservation principle is used to analyze components and processes in the system. The dynamics of adsorption is expressed using Dubinin-Astakhov adsorption equilibrium model. Energy interactions are evaluated to determine the theoretical performance and the operating parameters …
Published in Journal of Refrigeration, Air conditioning, Heating and ventilation · Vol. 1, Issue 2, 2014 · pp. 14–23 Read article
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A Review of Fluid Flow and Heat Transfer in Impinging Jet System
Abstract: Fluid flow and heat transfer in impinging air jet are of great importance in different engineering applications. The review concentrates on heat transfer studies in impinging air jet based on Nozzle geometry, Reynolds No, Nozzle to plate spacing, Nozzles with arrays or mesh screens, porous plates, oblique angle, plate geometry, plate surfaces and cross flow of jet and incorporates two major parts namely, experimental and numerical methodologies. Experimental methodologies employ …
Published in Recent Trends in Fluid Mechanics · Vol. 2, Issue 1, 2015 · pp. 1–14 Read article
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Numerical Investigations of Fluid Flow and Heat Transfer in a Ribbed Heated Duct with Variable Aspect Ratios
Abstract: The present investigation has been carried out to investigate the steady-state forced convection heat transfer and pressure drop characteristics of turbulent flow in an air cooled horizontal duct. The aspect ratio (W/H, where W is width and H is the height of the duct) is varied in the range of 1 to 4. Square ribs are fixed on the inner side of the bottom wall which is heated with constant …
Published in Recent Trends in Fluid Mechanics · Vol. 3, Issue 1, 2016 · pp. 27–37 Read article
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Fluid Flow Analysis and Flow Path Optimization of a Centrifugal Fuel Injector for a Turboshaft Aero Engine
Abstract: The present work of optimization is made for specific dimensions of a rotary fuel injector used in two of the high-performance defense helicopter’s gas turbine engines, presently. The need for doing this study is to meet the thermal design requirements of limiting the combustion chamber temperatures to an optimum designed value which heavily depends on finely divided homogeneous droplet sizes, the SMD (Sauter Mean Diameter) of the fuel that is …
Published in Recent Trends in Fluid Mechanics · Vol. 4, Issue 1, 2017 · pp. 22–27 Read article
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SIMULATION OF COLD DIE COMPACTION ALUMINA POWDER
Abstract: Compaction process was analyzed mathematically by predicting a steady-state mathematical model in order to give more description and understanding for the mechanism of this process. Numerical investigation has been carried out on axisymmetric cylindrical parts using the finite difference method with relaxation technique to examine the physical significance of constitutive model to produce the pressure gradients during compaction. The pressure distribution model is then typically coupled with empirical functions relating …
Published in Trends in Mechanical Engineering & Technology · Vol. 1, Issue 1, 2011 · pp. 1–21 Read article
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Numerical Formulation of Solidification of Aluminum Casting in 2-D Green Sand Mould
Abstract: Unsteady numerical simulation of steady state and unsteady state conduction heat transfer has been done for solidification of pure Aluminium in green sand mould. As during the solidification heat transfer by conduction will dominate over convection and radiation. Heat conduction equation in two-dimensional Cartesian co-ordinate governs the problem. Convective boundary condition has been considered at the interface of the casting part and mould cavity. Heat conduction equation in unsteady state …
Published in Trends in Mechanical Engineering & Technology · Vol. 5, Issue 3, 2015 · pp. 38–41 Read article
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Numerical Study of Lid Driven Cavity at Different Reynolds Number
Abstract: The present work focuses on flow inside a lid-driven cavity; main aim is to obtain the velocity field in steady state condition using Navier-Stoke equations. Navier-stoke equation has been converted into algebraic form using finite difference method (FDM). Pertinent parameter of the present study is Reynolds number. Stream-vorticity approach has been adopted to solve the physical problem. Different Reynold numbers and grid sizes have been studied. Peaks of the velocity …
Published in Trends in Mechanical Engineering & Technology · Vol. 5, Issue 3, 2015 · pp. 42–46 Read article
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Operating Limits of Three-phase Self-excited Induction Generator under Unbalanced Operations
Abstract: This paper presents a new GA based model to analyze the steady state performance of the self-excited induction generator (SEIG) under unbalanced load and excitation. The proposed model is based upon the load decoupled approach using symmetrical component theory. The simulated results as obtained using proposed model are compared with experimental results on a test machine. Close agreement with the experimental results proves the effectiveness of GA based model and …
Published in Journal of Alternate Energy Sources & Technologies · Vol. 4, Issue 3, 2013 · pp. 13–29 Read article
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Refractive-Type Fresnel Lens Concentrated Solar Water Heater-cum-Distillation Unit
Abstract: This paper presents a new GA based model to analyze the steady state performance of the self-excited induction generator (SEIG) under unbalanced load and excitation. The proposed model is based upon the load decoupled approach using symmetrical component theory. The simulated results as obtained using proposed model are compared with experimental results on a test machine. Close agreement with the experimental results proves the effectiveness of GA based model and …
Published in Journal of Alternate Energy Sources & Technologies · Vol. 4, Issue 3, 2013 · pp. 30–38 Read article