Numerical Investigation of a Silicon Six-Wafer Microcombustor Under the Effect of Heat Loss Through the Outer Walls

2010 ◽  
Vol 132 (12) ◽  
Author(s):  
Lin Zhu ◽  
Tien-Chien Jen ◽  
Xiao-Ling Kong
Keyword(s):  
Heat Transfer ◽  
Fluid Dynamics ◽  
Numerical Simulation ◽  
Outer Wall ◽  
Analysis Method ◽  
Element Analysis ◽  
Transfer Condition ◽  
3D Finite Element ◽  
Finite Element Analysis Method ◽  
Computational Fluid Dynamics Cfd

In this paper, the influences of low heat transfer condition at the outer walls on the microcombustor are investigated due to the fact that a sufficiently small heat transfer coefficient at the outer wall incurs the upstream burning in the recirculation jacket, results in the high wall temperature, and hence possibly damages the microcombustor. Numerical simulation approaches focused on the microcombustor with the flame burning in the recirculation jacket. Combustion characteristics of the combustor were first analyzed based on 2D computational fluid dynamics (CFD), and then the most dangerous locations on the combustor were predicted by means of the 3D finite element analysis method. The study demonstrates the effectiveness of CFD and stress modeling for the design and improvement of the microcombustors.

Fairing Evaluation Based on Numerical Simulation

2012 ◽  
Author(s):  
Juan P. Pontaza ◽  
Mohan Kotikanyadanam ◽  
Piet Moeleker ◽  
Raghu G. Menon ◽  
Shankar Bhat
Keyword(s):  
Fluid Dynamics ◽  
Numerical Simulation ◽  
Current Speed ◽  
Full Scale ◽  
Attractive Alternative ◽  
Element Analysis ◽  
Vortex Induced Vibrations ◽  
Helical Strakes ◽  
Computational Fluid Dynamics Cfd ◽  
Viv Suppression

It is well established that strakes are effective at suppressing vortex-induced vibrations (VIV). Fairings are an attractive alternative to helical strakes, because they are a low drag VIV suppression solution. The paper presents an evaluation of a fairing design, based on numerical simulations — to be complemented at a later stage with current tank testing. This paper documents the computational fluid dynamics (CFD) and finite element analysis (FEA) of the evaluation: (1) 3-D CFD in the laboratory scale: 4.5 inch pipe, 3 ft/s current speed, (2) 3-D CFD in the full scale: 14 inch riser, 4 knots current speed, and (3) 3-D FEA of the full-scale fairing module latching mechanism, under service loads corresponding to 4 knots current speed. The analysis results show that the fairing design (1) is effective at suppressing VIV, (2) yields a low drag coefficient (0.52 at Re ∼ 106), and (3) its latching mechanism is adequate for use in calm sea states with 4 knots current speeds.

Car Progressive Stamping Molding Process Simulation and Process Optimization

2014 ◽  
Vol 971-973 ◽  
pp. 414-417
Author(s):  
Yao Guo Liu
Keyword(s):  
Numerical Simulation ◽  
Process Simulation ◽  
Analysis Method ◽  
Molding Process ◽  
Element Analysis ◽  
Sheet Metal Stamping ◽  
Molding Method ◽  
Finite Element Analysis Method ◽  
Simulation Techniques ◽  
Metal Stamping

Based on the beam outside the front car plate , for example, to use DYNAFORM software for finite element analysis method to start the process of drawing molding method, the research body stamping design and formability analysis. Numerical simulation techniques for forming sheet metal stamping simulation .

scholarly journals Modelling by Finite Element Analysis Method of Stress State Establishing for an Steel Alloy

2015 ◽  
Vol 3 ◽  
pp. 34
Author(s):  
Silviu Macuta ◽  
Mirel Istratescu
Keyword(s):  
Experimental Data ◽  
Numerical Simulation ◽  
Finite Element Analysis ◽  
Steel Alloy ◽  
Analysis Method ◽  
Pure Bending ◽  
Element Analysis ◽  
Bending Fatigue ◽  
Finite Element Analysis Method ◽  
Simulation Based

The paper presents some results about thetension state in samples subject to pure bending fatigue process. Numerical simulation based on finit elementmethod was used. The tension field induced by a verticaldeformation imposed at the sample ends was generatedon an original patented machine. The studies werecarried out on two steels currently used in pressurevessels industry. Experimental data are in good agreementwith the simulated ones.

scholarly journals Numerical simulation and experimental validation of solar greenhouse dryer using finite element analysis for different roof shapes

2021 ◽  
Vol 5 (1) ◽  
pp. 69-80
Author(s):  
Aditya Arvind Yadav ◽  
Pravin A. Prabhu ◽  
Jaydeep S. Bagi
Keyword(s):  
Numerical Simulation ◽  
Finite Element Analysis ◽  
Finite Element ◽  
Greenhouse Effect ◽  
Experimental Validation ◽  
Short Wave ◽  
Analysis Method ◽  
Element Analysis ◽  
Finite Element Analysis Method ◽  
Solar Greenhouse

The word greenhouse dryer is used for a building which is highly glazed with thermal conditioning for desired range and it is used for cultivating crops, plants, vegetables, etc. The actual working of a greenhouse is that the short-wave radiations falling on the greenhouse are absorbed by the outer glazing material thereby heating the interior area of greenhouse and providing ambient heat for plants, vegetables growth respectively. The heated space is retained within the enclosure of greenhouse. This phenomenon is called as greenhouse effect. The important role played during the greenhouse effect phenomenon are atmosphere, insulating roofs, walls, etc. The current study focuses on the numerical and experimental validation of Solar Greenhouse which is utilized for drying phenomenon. The numerical simulation is performed using Finite Element Analysis method. The various roof shapes have been incorporated to have emphasis on maximum solar gain to drying phenomenon.

Bolt Static Finite Element Numerical Simulation and Experimental Research

2014 ◽  
Vol 494-495 ◽  
pp. 373-376
Author(s):  
Zheng Yan Dong ◽  
Han Long Zhang
Keyword(s):  
Numerical Simulation ◽  
Finite Element Analysis ◽  
Finite Element ◽  
Static Strength ◽  
Analysis Method ◽  
Element Analysis ◽  
Static Test ◽  
Finite Element Analysis Method ◽  
The Finite Element Analysis ◽  
Finite Element Numerical Simulation

This study investigated the wind turbine blade root bolt static strength using the full scale static test, selected the root bolts of 1/4 bridge strain gauge using the finite element analysis method and the dynamic and static strain instrument. The data of the stress loading combined tension and bending bolt were obtained.

3D Finite Element Analysis of Single Span Special-Shape Arch Bridge with Diagonal Crossing Arch Rib and Curved Girder

2011 ◽  
Vol 63-64 ◽  
pp. 915-918
Author(s):  
Xia Peng ◽  
Xing Nai Wang ◽  
Xue Gui
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Analysis Method ◽  
Static Characteristics ◽  
Special Shape ◽  
Element Analysis ◽  
3D Finite Element ◽  
Arch Bridge ◽  
Curved Bridge ◽  
Finite Element Analysis Method

Yueniang bridge is curve, slope and slant single span special arch bridge with diagonal crossing arch rib and curved girder. A spatial finite element analysis method was used in this paper. Static characteristics and stability was analysis and discussed by means of modeling, discrete element and determination. Concrete measures for suspender of curved bridge were also advanced. It can provide a reference for design of similar bridge.

A Finite Element Analysis of the Thermo-Hydro-Mechanically Coupled Problem of a Cohesive Deposit Using a Thermo-Elasto-Viscoplastic Model

2007 ◽  
Vol 340-341 ◽  
pp. 1291-1296 ◽  
Author(s):  
Sayuri Kimoto ◽  
Fusao Oka ◽  
Young Seok Kim ◽  
Naoaki Takada ◽  
Yosuke Higo
Keyword(s):  
Numerical Simulation ◽  
Finite Element Analysis ◽  
Finite Element ◽  
Analysis Method ◽  
Volume Changes ◽  
Element Analysis ◽  
Viscoplastic Model ◽  
Finite Element Analysis Method ◽  
Coupled Problem ◽  
Thermal Consolidation

We propose a thermo-hydro-mechanically coupled finite element analysis method for clay with a thermo-elasto-viscoplastic model. The volume changes in soil particles and pore fluids are introduced into the analysis method. The instability of the problem is studied and a numerical simulation of the thermal consolidation is presented using the newly developed analysis method. It was confirmed that the analysis method can reproduce the thermal consolidation phenomenon well.

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