The wind turbine gearbox, used as a multiplier, is one of the main components directly related to turbine’s efficiency and lifespan. Therefore, strict control gearbox its manufacturing processes even minor improvements in this component strongly positively impact energy production/generation over time. Since only some papers literature analyze mechanical aspect turbines, focusing on parts depth, paper fills gap by offering an analysis under highest amount stress, namely relating sun shaft,...

Fast growth of renewable energies has required addressing challenges such as generating the largest energy production possible throughout equipment's lifespan and between its preventive corrective maintenance intervals. Actions maintenance, improvement main components, mainly when it comes to reliability predictability are extreme importance reach maximum generation. Due yaw drives for wind turbines, this paper aims evaluate a failure that occurred on cycloidal gearbox used in drive kind....

The application of reinforcements on plates is very important to increase products strengths and sometimes applied promote higher heat dissipation efficiency. understanding the design simple regarding thermal mechanical characteristics, visualizing future utilization, favors development optimized robust products. This paper aims present a simplified plate segments (2D) in order understand ponder mathematically, by novelty Multiphysics (FEM) statistically (DOE), its possibilities under...

The study of energy sources is an open subject due to constraints on the current global production versus and future demands. From consumption perspective, houses pull considerable from electrical grid. With that being said, this paper investigates theoretical thermal distribution heat in basement a house measures temperatures throughout different points at same height by using statistics numerical simulation. simulation, such as Computational Fluid Dynamic Analysis COMSOLTM combined with...

This paper presents a series of numerical simulations porous reactor, where generic reaction between reagents is carried out, generating product. All were performed by using the software COMSOL Multiphysics, which made use Navier-Stokes and Brinkman equations. These equations utilized to govern fluid flow in simulation. Throughout simulations, several initial parameters altered evaluate their impact on reactor efficiency based concentration component C. Furthermore, other such as...

Research in renewable energy, the preservation of environment, and reduction energy generation costs are themes that go hand hand. In this work, a case study was carried out aims to maximize production hydrogen through Methane Steam Reforming. For this, several numerical simulations, considering laminar flow regime chemical reactor with catalyst, were developed COMSOL Multiphysics. After an exploratory data, systematic optimization using multivariate regression models formed by combinations...

This work aims to solve the 1D Burgers equation, which represents a simplification of Navier-Stokes supposing yielding only at x -direction and without pressure gradient. For such solution, an implicit scheme (Cranck-Nicolson method) with fourth order precision in space is utilized. The main contribution this application linearization technique non-linear term (advective term), then, towards analytical numerical results from literature, validate demonstrate it as being highly satisfactory.

In this paper, numerical simulations via regressive and central finite differences of different orders were produced using Fortran code a one-dimensional non-linear wave equation was solved. The errors obtained during simulations, when refinements, listed compared in order to determine the validity simulation, which demonstrates that proposed formulation presents satisfactory results.

It is known that air pollution responsible for causing numerous respiratory problems in the population, and critical situations can even lead people to death. Because of this, a study was started here analyze amount carbon monoxide (CO) dioxide (CO2), which cars run daily on highway near city Lorena-SP-Brazil scatter through air. From carried out using software COMSOL Multiphysics® three different (geometries) will be simulated numerically discussion presented.

Many combustion engines and electric motors drive machines or equipment by turning a shaft thus producing work. As relevant part of machine principle, torque transference deserves deep analysis regarding the techniques that determine precisely Finite Element (FE) boundary conditions are to be applied. This work presents loaded with causes torsion results in shear stresses material. In this context, when designing calculating transfer torque, virtual like FE Analysis (FEA) must replicate...

The paper addresses the optimal distribution planning and its importance in three different contexts of utilities practice: expansion planning, operation emergency planning. problem is formulated as an optimization algorithms software requirements are addressed. For each practice context, reports benefits increasing capacity, improving efficiency reliability, selecting investments.

The study of energy sources has been an awareness the modern world due to constraints on current worldwide supply chain. complexity theme as well consciousness finite also need saving become a priority. Although many papers have moved in this direction there is no record studying variables house heating system, which represents highest consumption cold countries. This paper explores energy-saving by main present houses’ systems winter season countries like Canada, Russia, Norway, Iceland,...

Abstract This work analyses the impact of viscosity increase on separation efficiency swirl tubes based experimental data. The data is reduced using dimensionless analysis. A functional relationship between and groups obtained. It discloses how depends liquid viscosity, flow rate, solid size, other geometrical parameters separator.It helps to push design these desander devices new scenarios with heavy crudes or oil-water mixtures low water cuts prone evolve emulsions.

Wind energy is one of the main drivers renewable market. The wind turbine gearbox, used as a multiplier - components directly related to efficiency and lifespan. Therefore, strict control gearbox project its manufacturing processes or even minor improvements in this component heavily positively impact production/generation over time. This work diagnoses 1.6 MW fracture mechanics identify reason how chain events took place, leading catastrophic failure. underwent numerical simulation (Finite...

Energy is vital to machines and equipment basic functioning. On the other hand, it has an ambiguity determined by its detrimental side under circumstances. This paper aims present a review of simple laws physics / mechanics in order understand some benefits using such energies (kinetic potential energies), process products or generating movement (mechanical energy). However, also shows damaging for driving systems, where may generate catastrophes, usually due high impacts. last, which...

A case study on evaluation of a heavy–duty Stacker Boom Luffing Pulley was presented. Irwin's fracture toughness method and the British Standard were used to help in decision–making process. Using inspection, discontinuities found at first look cylinder cross–section region welding ends. more detailed analysis conducted by ultrasonic mapping, crossing transverse thickness longitudinal its length. The final decision took into account accurate stress σ1 (Principal Stress) from Finite Element...