Investigation of a solar assisted heat pump wheat drying system with underground thermal energy storage tank

Structural analysis is an essential tool for design engineers. Mesh generation is the basic step in any simulation. In practice of finite-element stress analysis, the engineer first needs to know if key stresses are converging, and second if they have converged to a reasonable level of accuracy. In order to achieve results that are reliable when using the finite element method, it must be ensured that an acceptable mesh is used with respect to the shape and size of the elements. Mesh quality and mesh density values are directly linked with the solution accuracy. This paper presents a mesh convergence study on the hub which is the most challenging part in the automotive clutch disc assembly. Finite element analysis convergence defines the relationship between the number of elements or DOF and the analysis accuracy. Discretization error is key concept for the study of mesh convergence study, also discretization is function of number of degree of freedom of model. A detailed comparison of different results is carried out using convergence test based on displacement and energy norms. Error between exact and ANSYS results are compared in this study.

/pdf/mesh-convergence-study-and-estimation-of-discretization-24sxajn1vm.pdf

Mesh convergence study and estimation of discretization error of hub in clutch disc with integration of ANSYS

Hybrid IWD-DE: A Novel Approach to Model Cooperative Navigation Planning for Multi-robot in Unknown Dynamic Environment

Enhanced nodal gradient finite elements with new numerical integration schemes for 2D and 3D geometrically nonlinear analysis

Thermal performance of a solar‐assisted heat pump drying system with thermal energy storage tank and heat recovery unit

An alternate stable midpoint quadrature to improve the element stiffness matrix of quadrilaterals for application of functionally graded materials (FGM)

Time efficiency and error estimation in generating element stiffness matrices of plane triangular elements using Universal Matrix Method and Gauss-Quadrature

Objective: This paper presents a comparative study on the mathematical modeling of the drying characteristics of wheat grains and to estimate the suitable mathematical model of the drying behavior of the wheat at different operating parameters. Methods/Statistical Analysis: The drying experiments were performed in cylindrical fluidized bed dryer. Drying experiments were carried out with different operating parameters such as inlet air temperature (55, 60 and 65°C), air velocity (2.2, 2.4 and 2.6 m/sec) and initial moisture content of wheat (27.5, 30 and 32.5%) of total solid weight. Findings: The result of moisture content observed for various drying air temperature, velocity, and initial moisture content converted to the moisture ratio countenance with drying time at a corresponding time during their drying process. Thirteen mathematical models are compared based on their correlation coefficients, rootmean square error, mean bias error and reduced -square to estimate the drying curves with the help of the experimental data. Among different model considered, the logarithmic model presented a better agreement with the data attained from the experiments. Application/ Improvements: It is used for agricultural and pharmaceutical drying process.

Experimental Studies and Mathematical Modeling of Drying Wheat in Fluidized Bed Dryer

There are certain cases where FEM gives erroneous results due to the problem of locking. Locking phenomenon has been classified into three basic categories. shear, volumetric and membrane locking. This project discusses the causes, effects and remedies for shear locking in conventional FEM using lower order elements for bending dominated problems. New quadrature rule is considered in this project which will overcome the hour glassing effect that arises in Gauss one-point integration while solving the bending dominated problem.

Shear locking reduction in family of plane quadrilateral elements

In this article we have designed and constructed a simple yet effective Solar Energy Based LED Powered Light and Inverter Circuit with Different Types of Sensors. The Solar Energy Based LED Powered Light and Inverter Circuit with Different Types of Sensors are constructed using simple electronic components and the voltage vs time graph during the sunny, cloudy, and rainy days are analyzed. The observed values are plotted in graph and the constructed device is found to be working perfectly which shows that the device can be used for various domestic and commercial solar applications.

R. Yogeshwaran

Papers

An alternate stable midpoint quadrature to improve the element stiffness matrix of quadrilaterals for application of functionally graded materials (FGM)

Time efficiency and error estimation in generating element stiffness matrices of plane triangular elements using Universal Matrix Method and Gauss-Quadrature

Experimental Studies and Mathematical Modeling of Drying Wheat in Fluidized Bed Dryer

Shear locking reduction in family of plane quadrilateral elements

Solar Energy Based LED Powered Light and Inverter Circuit with Different Types of Sensors