Three-Parameter Estimation Study in a Radial Fin Geometry Using FDM-Based Simplex Method

Das, Ranjan

doi:10.1080/01457632.2013.876866

Cited by 11 publications

(3 citation statements)

References 15 publications

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“…Moreover, the Adomian Decomposition Method (ADM) was used to address nonlinear governing differential equations for rectangular fins, accounting for temperature-dependent thermal conductivity and internal heat generation 9) . Finite-Difference Method (FDM) was considered in order to obtain the required temperature field 10) . Additionally, Finite Element Method (FEM) optimization was conducted for coil springs in automobile suspensions, comprising different material types 11),12) .…”

Section: Introductionmentioning

confidence: 99%

The Prediction of Stress and Safety Factor of Shock Absorber Based on Cyclic Loading Using Finite Element Method

Endra Dwi Purnomo,

Azka,

Hotma

et al. 2023

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The aim of this study was to predict the strength of shock absorber under cyclic loading, with the goal of supporting the development of suspension components for electric vehicles. Shock absorber was designed with specific material specifications to effectively dampen vibrations and dissipate kinetic energy. The process began with the initial drafting of the geometric structure, followed by the determination of boundary conditions using cyclic loading forces. Furthermore, mesh grid independence and convergence tests were carried out to assess the accuracy of the simulation, using Finite Element Method (FEM) with ANSYS software. The simulation was conducted to analyze deformation, von Mises stress, and safety factor. The results showed that the mesh grid independence test and convergence test assisted in determining the appropriate mesh size for model optimization and efficiency. Additionally, FEM simulation provided stress and deformation values that could identify critical areas within the components. Another important result was the gradual decline in safety factor value, starting from the sixth second and continuing until the end of the simulation under cyclic loading conditions. This transient behavior of safety factor value should be taken into consideration for design safety.

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Section: Introductionmentioning

confidence: 99%

The Prediction of Stress and Safety Factor of Shock Absorber Based on Cyclic Loading Using Finite Element Method

Endra Dwi Purnomo,

Azka,

Hotma

et al. 2023

Evergreen

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“…Chen et al [21] have estimated the convective heat transfer coefficient of an annular fin using CGM, whereas Peng et al [22] have used the particle swarm algorithm for studying plate-fin heat exchangers. Das in [23,24] respectively, used the genetic algorithm (GA) and the simplex search method for inverse heat transfer analyses of cylindrical fin. For rectangular fin geometry, the application of the simulated annealing and the differential evolution (DE) has been done by Das and Ooi [25] and Bhowmik et al [26], respectively.…”

Section: Introductionmentioning

confidence: 99%

Identification of materials in a hyperbolic annular fin for a given temperature requirement

Das

2015

Inverse Problems in Science and Engineering

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This article deals with the prediction of parameters in an annular hyperbolic fin with temperature-dependent thermal conductivity. Three parameters such as thermal conductivity, variable conductivity coefficient and the surface heat transfer coefficient have been predicted for satisfying a prescribed temperature distribution on the surface of fin. This is achieved by a hybrid differential evolution-nonlinear programming optimization method. The effect of random measurement errors is also considered. It is observed from the present inverse analysis that many feasible materials exist satisfying the given temperature distribution, thereby providing engineering flexibility in selecting any material from the available choices. For a given material, this is possible by regulating the surface heat transfer coefficient.

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“…Such type of analysis is referred to as the forward/direct analysis [5] and solutions to such type of problems are normally unique. However, the case becomes interestingly different and relatively intricate when the task is to estimate important unknown parameters which can satisfy a particular requirement and such types of problems are classified as inverse problems in which solutions are not necessarily unique [6][7][8][9]. In other words, many feasible combinations of unknown parameters conforming to a given condition may exist, thus such problems are relevant to the design of engineering systems [10,11].…”

Section: Introductionmentioning

confidence: 99%

Predicting Dimensions of a Rectangular Fin Satisfying a Given Internal Heat Generation Using Inverse Method

Das

2015

ASME 2015 Gas Turbine India Conference

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This paper deals with a computational study to predict important dimensions of a rectangular fin used in gas turbine blade cooling for satisfying a prescribed internal heat generation. The heat transfer is assumed to occur by simultaneous conduction, convection and radiation. The effect of temperature-dependent thermal conductivity has been also taken into consideration. Rectangular fin geometry has been considered due to its simplicity and easiness of fabrication. Corresponding to known values of various thermo-physical parameters, at first using the fourth order implicit Runge-Kutta-based forward method, the relevant steady-state temperature distribution is evaluated. Forward method has been well-validated with three numerical schemes and experimental data. Thereafter, an inverse problem is solved using the genetic algorithm (GA) for predicting fin dimensions satisfying a prescribed temperature distribution corresponding to a fixed internal heat generation. The relevant objective function has been formulated using a three-point error minimization technique represented by square of residuals between guessed and available temperature distributions. The analysis has been done for three different fin materials such as Inconel, Hastelloy and Titanium. These materials are generally used in gas turbine blade applications due to their high melting point along with good fatigue, corrosion and creep properties. Effects of random measurement errors following a Gaussian profile are analyzed. The variations of relevant parameters are studied at different generations of GA. It is observed that for a given fin material, many feasible dimensions can sustain a given amount of internal heat generation which offer sufficient scopes to the fin designer. For the required amount of heat generation, the suitability of estimated parameters has been verified by the comparison between actual and reconstructed temperature distributions alongwith minimization of total fin volume. The present work is proposed to be useful in selecting appropriate dimensional fin configurations corresponding to a given material which can satisfy a fixed amount of internal heat generation.

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Three-Parameter Estimation Study in a Radial Fin Geometry Using FDM-Based Simplex Method

Cited by 11 publications

References 15 publications

The Prediction of Stress and Safety Factor of Shock Absorber Based on Cyclic Loading Using Finite Element Method

The Prediction of Stress and Safety Factor of Shock Absorber Based on Cyclic Loading Using Finite Element Method

Identification of materials in a hyperbolic annular fin for a given temperature requirement

Predicting Dimensions of a Rectangular Fin Satisfying a Given Internal Heat Generation Using Inverse Method

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