Bionic design and finite element analysis of elbow in ice transportation cooling system

2010 ◽  
Vol 7 (3) ◽  
pp. 301-306 ◽  
Author(s):  
Dejun Miao ◽  
Xiuhua Sui ◽  
Linjing Xiao
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Cooling System ◽  
Bionic Design ◽  
Element Analysis

Bionic design of the tower for wind turbine

2021 ◽  
pp. 095440622110046
Author(s):  
Yuqiao Zheng ◽  
Fugang Dong ◽  
Huquan Guo ◽  
Bingxi Lu ◽  
Zhengwen He
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Maximum Stress ◽  
Natural Frequencies ◽  
Bionic Design ◽  
Analytic Hierarchy ◽  
Element Analysis ◽  
Maximum Deformation ◽  
Overall Stability ◽  
Biological Selection

The study obtains a methodology for the bionic design of the tower for wind turbines. To verify the rationality of the biological selection, the Analytic Hierarchy Procedure (AHP) is applied to calculate the similarity between the bamboo and the tower. Creatively, a bionic bamboo tower (BBT) is presented, which is equipped with four reinforcement ribs and five flanges. Further, finite element analysis is employed to comparatively investigate the performance of the BBT and the original tower (OT) in the static and dynamic. Through the investigation, it is suggested that the maximum deformation and maximum stress can be reduced by 5.93 and 13.75% of the BBT. Moreover, this approach results in 3% and 1.1% increase respectively in the First two natural frequencies and overall stability.

Accelerating the Product Development of a Commercial Vehicle Radiator using Finite Element Analysis

2017 ◽  
Vol 9 (1) ◽  
Author(s):  
P.R. Roy ◽  
V. Hariram ◽  
M. Subramanian
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Product Development ◽  
Commercial Vehicle ◽  
Cooling System ◽  
Experimental Testing ◽  
Engine Oil ◽  
Operating Pressure ◽  
Element Analysis ◽  
Engine Cooling

Emissions such as Nox and CO resulting from the combustion of the diesel engines in the commercial vehicles leads to environmental degradation and ozone layer depletion. Alarming environment trend forces the government institutions to develop and enforce strict emission laws for the next generation transportation vehicles. Stricter emission laws mean higher operating pressure, temperature, reduced weight, tight packaging space, engine downsizing etc. Engine cooling systems are the critical components in the managing the engine cooling requirement of the commercial vehicle. Generally engine cooling system includes radiator, charge air cooler, engine oil cooler etc. Product development of thermal management system using the traditional design process takes more time, resource and money. To solve the complex design problem, numerical technique such as finite element analysis is performed upfront in the product development of the radiator to evaluate the structure behaviour under mechanical loading. In this paper, internal static pressure analysis of a radiator is presented to showcase the benefits of using the finite element technique earlier in the product design phase. Pressure cycle life at a critical joint of the radiator is calculated using strain-life approach. Finite element analysis aids in visualization of the hot spots in the design, comparing different design options with less turnaround time. Experimental testing and prototypes can be reduced. Risk of a product being failed is greatly minimized by performing the numerical simulation.

scholarly journals Finite Element Analysis of System-Level Electronic Packages for Space Applications

2015 ◽  
Vol 2015 ◽  
pp. 1-9
Author(s):  
Adrien Lambert ◽  
Ahsan Mian ◽  
Justin Hogan ◽  
Todd Kaiser ◽  
Brock LaMeres
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Cooling System ◽  
System Level ◽  
Primary System ◽  
Electronic Systems ◽  
Element Analysis ◽  
Space Applications ◽  
Flight Operations ◽  
Radiation Sensor

Thermal analysis was required in order to aid in the design and testing of a radiation tolerant computing (RTC) system using a radiation sensor. During development of the system, different test beds were employed in order to characterize the radiation sensor and its supporting electronic systems. The most common preliminary tests are high altitude balloon tests which allow the sensor to experience cosmic radiation at high altitudes, consistent with space flight operations. In this study, finite element analysis (FEA) was used to evaluate primary system architecture, system support structures, and the flight payload in order to determine if the system would survive preliminary and future testing. ANSYS FEA software was used to create thermal models which accurately simulated convective cooling, system heat generation, and solar radiation loading on the exterior of the payload. The results of the models were then used to optimize payload PC board (PCB) design to ensure that the internal electronic systems would be within acceptable operating temperatures.

Numerical Characterization of a Jet Impingement Cooling System Using Coupled Heat Transfer Analysis

2015 ◽  
Author(s):  
E. Nadir Kaçar ◽  
L. Berrin Erbay
Keyword(s):  
Heat Transfer ◽  
Finite Element Analysis ◽  
Finite Element ◽  
Finite Volume ◽  
Cooling System ◽  
Jet Impingement ◽  
Element Analysis ◽  
Impingement Cooling ◽  
Single Row ◽  
Volume Analysis

In this study jet impingement cooling method is investigated with coupled analysis. Total cooling rate is observed for the specific jet impingement configuration using both finite volume and finite element methods. The specific configuration contains single row of jets of separate four rowed impingement cooling system. This single row is placed at the suction side of vane near trailing edge. For the observation, finite volume analysis is carried out via Fluent program. CFD model, which uses constant hot wall (target surface) temperature, is validated using the test case available in the literature. Constant wall temperature is 1250 K and hot gas of system is at 1500 K with 800 kPa. Moreover, conditions of cooling air are 500 K and 400 kPa. All conditions are determined to simulate specifications of a vane of middle class engine. The coupled solution is performed to calculate realistic heat transfer coefficient (htc) values. It involves concurrent execution of finite element analysis and finite volume analysis for aero-thermal optimization. Iterations are carried out via exchanging heat transfer coefficient values for finite element analysis and metal temperature values for finite volume analysis. At the end of three iterations, 8.1% decrease of htc values is obtained and optimum metal temperature values for the specified cooling configuration are calculated.

scholarly journals Simulation of the cooling process between 16 and 19 fin liners of a sedan automobile

2020 ◽  
pp. 1-5
Author(s):  
Iván De Jesús Cerrito-Tovar ◽  
Oscar Enrique García-Duarte ◽  
Héctor Huerta-Gámez ◽  
Neftali Carolina Cerrito-González
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Cooling System ◽  
Cooling Time ◽  
Cooling Process ◽  
Element Analysis ◽  
Mechanical Element

In this paper a finite element analysis is carried out on the mechanical element called the piston liner; The main objective of the analysis is to know the advantages of increasing the number of fins in said mechanical element. For the piston to have greater durability and to function optimally, it is necessary to make certain adjustments to the cooling system, hence the fact of making modifications or improvements within the piston liner. Models of the piston liner were made, which were considered the most suitable to be subjected to simulations. Various simulations were carried out, which helped to conclude that the more fins there are, the better the piston performance. Basically, an analysis was made between the 16-fin liner and another analysis with the 19-fin liner, the results were as expected, the 19-fin liner gives us a more favorable cooling time for the piston

Probabilistic Finite Element Analysis of Cooled High-Pressure Turbine Blades—Part A: Holistic Description of Manufacturing Variability

2020 ◽  
Vol 142 (10) ◽  
Author(s):  
Lars Högner ◽  
Matthias Voigt ◽  
Ronald Mailach ◽  
Marcus Meyer ◽  
Ulf Gerstberger
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
High Pressure ◽  
Cooling System ◽  
Measurement Techniques ◽  
Turbine Blades ◽  
Parametric Models ◽  
High Pressure Turbine ◽  
Element Analysis ◽  
Cooling Passage

Abstract Modern high-pressure turbine (HPT) blade design stands out due to its high complexity comprising three-dimensional blade features, multipassage cooling system (MPCS), and film cooling to allow for progressive thermodynamic process parameters. During the last decade, probabilistic design approaches have become increasingly important in turbomachinery to incorporate uncertainties such as geometric variations caused by manufacturing scatter and deterioration. Within this scope, the first part of this two-part article introduces parametric models for cooled turbine blades that enable probabilistic finite element (FE) analysis taking geometric variability into account to aim at sensitivity and robustness evaluation. The statistical database is represented by a population of more than 400 blades whose external geometry is captured by optical measurement techniques and 34 blades that are digitized by computed tomography (CT) to record the internal geometry and the associated variability, respectively. Based on these data, parametric models for airfoil, profiled endwall (PEW), wedge surface (WSF), and MPCS are presented. The parametric airfoil model that is based on the traditional profile theory is briefly described. In this regard, a methodology is presented that enables to adapt this airfoil model to a given population of blades by means of Monte Carlo-based optimization. The endwall variability of hub and shroud are parametrized by radial offsets that are applied to the respective median endwall geometry. WSFs are analytically represented by planes. Variations of the MPCS are quantified based on the radial distribution of cooling passage centroids. Thus, an individual MPCS can be replicated by applying adapted displacement functions to the core passage centroids. For each feature that is considered within this study, the accuracy of the parametric model is discussed with respect to the variability that is present in the investigated blade population and the measurement uncertainty. Within the scope of the second part of this article, the parametric models are used for a comprehensive statistical analysis to reveal the parameter correlation structure and probability density functions (PDFs). This is required for the subsequent probabilistic finite element analysis involving real geometry effects.

Heat pipe cooling system of high-power three-level explosion-proof inverter based on the loss calculation and finite element analysis

2017 ◽  
Vol 31 (19-21) ◽  
pp. 1740005
Author(s):  
Yuan Li
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Heat Pipe ◽  
High Power ◽  
Cooling System ◽  
Engineering Application ◽  
Element Analysis ◽  
Cooling Systems ◽  
Critical Problems ◽  
Theory Calculation

The special using condition of high-power three-level explosion-proof inverter limits its cooling system within heat pipe and water-cooled cooling systems. How to calculate these two systems quantitatively to provide references for engineering application becomes one of the critical problems. In this paper, the principle of three-level explosion-proof was introduced first, and the power-loss generation theory was described and deduced into equations. Secondly, the heat pipe cooling system theory calculation was conducted based on the power losses of power devices, and the whole cooling system model was built by using finite element analysis. Finally, the temperature rise experiment was carried out on a 1 MW high-power three-level explosion-proof inverter, and the results proved the feasibility of this theory and its accuracy of analysis.

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