Análise de Influência da Utilização de Propriedades Termodependentes na Simulação de Juntas Soldadas
A. A. S. B. Cruz , N. S. B. da Silva ,
 Universidade Federal de Pernambuco, Recife, PB, Brasil
Visando minimizar os cálculos envolvidos em simulações numéricas de juntas soldadas e diminuir a quantidade de informações necessárias, busca-se fazer simplificações que não tenham influências consideráveis nos resultados. Para o presente trabalho, analisou-se, através do COMSOL Multiphysics, o impacto das propriedades dos materiais dependentes da temperatura neste tipo de simulação. Para ...
A. Prasad , O. K. Sacks , R. C. Thiagarajan ,
 ATOA Scientific Technologies, Bengaluru, India
This paper deals with the numerical experiments for early prediction of muffler performance at the design stage. In this experiment a Reactive Muffler is developed and validated numerically compared to traditional built and test process.
M. Hussain , Ramanathan S. , R. C. Thiagarajan ,
 ATOA Scientific Technologies, Bengaluru, Karnataka, India
Casting product performance depends on material, flow, Process Temperature, Solidification, Shrinkage and residual stress. In a casting process, not all available resources are utilized effectively which results in low quality of casting, defects and metal wastage. Physics based modeling is increasingly used to optimize product performance, improve quality and reduce defects of casting products. ...
A. Pellegrini, A. Beucci, and F. Costa
ALTRAN Italia, Pisa, Italy
In this paper a methodology for calculating the infrared signature of complex objects is presented. The transient thermal analysis allows us to evaluate the temperature distribution on the investigated object, pointing out which parts tend to be warmer. These temperature values are handled in the post processing phase in order to evaluate the zero range radiance distribution and the radiance of ...
Dipartimento di Ingegneria Industriale, Università di Parma, Parma, Italy
Simulated Thermal Response Test (TRT) data are analyzed in order to evaluate the effect of the tridimensionality model’s feature in determining the proper value of the soil thermal conductivity and borehole thermal resistance. The 3D system’s simulation during the TRT is realized by adopting the finite element method. The comparison of the numerical results with the analytical ...
Heat Loss Evaluation of an Experimental Set-up for Predicting the Initial Stage of the Boiling Curve for Water at low Pressure
K. T. Witte, F. Dammel, L. Schnabel, and P. Stephan
Fraunhofer Institut Solare Energiesysteme - Department of Thermal Systems and Buildings, Freiburg, Germany
Technische Universität Darmstadt - Institute of Technical Thermodynamics, Darmstadt, Germany
In this paper heat losses and gains are assessed for a specific measuring set-up improving the validity of performance data to accurately predict the initial stage of a boiling curve. Simulation focus on achieving results predicting real measuring data of a plain surface structure. Therefore, the relevant components of the measuring set-up have been implemented in a 2-D axisymmetric model ...
Ingegneria Senza Frontiere, DESE, Università di Pisa, Pisa, Italy
In the Andean region of Southern Peru, poverty and climate are extreme: at 4000mt asl, insolation is among the highest in the world but the temperature varies more than 30 degrees between day and night. At the community of Livitaca (Cuzco), the association “Ingegneria Senza Frontiere” is working on a project of bioclimatic architecture. In this context, it is devised a low cost drainback solar ...
F. Maier, P. Oberdorfer, I. Kocabas, I. Ghergut, M. Sauter
Dpt. Applied Geology, Center of Geosciences, Georg-August-University, Göttingen, Germany
Petroleum and Natural Gas Engineering Department Batman, Batman University, Batman, Turkey
We compare the output of 2D single fracture models as well as analytical solutions of the problem. The temperature signal is evaluated with the heat transfer mode while the flow field is assumed to exhibit Darcy flow everywhere. The problem is time-dependent so we have to take into account a change in the boundary conditions from a Dirichlet to a Neumann condition which is activated at the time ...
IMI, Ramat Hasharon, Israel
This paper presents thermo-mechanical models for predicting the strength of polymer laminates loaded in tension or compression exposed to one-sided radiant heating by fire. The first part is the fire simulation where the FDS model is utilized. The FDS model generates a solution of several state variables, such as pressure, temperature, heat, velocity vector. In the second part, COMSOL heat ...
N. Bianco, R. Capuano, W.K.S. Chiu, S. Cunsolo, V. Naso, M. Oliviero
DETEC, Università degli Studi Federico II, Napoli, Italy
Department of Mechanical Engineering, University of Connecticut, Storrs, CT, USA
A conjugate conductive-convective-radiative discrete model useful for the study and the simulation of heat transfer in a ceramic or metallic foam is presented. A Generation-based Technique is used for the foam representation, using the Weaire-Phelan structure and heat transfer is studied using the COMSOL Multiphysics. The computational domain is made up by a single cell and a fictitious inlet ...