I. Lupelli, P. Gaudio, A. Malizia, R. Quaranta
Department of Industrial Engineering, University of Rome “Tor Vergata”, Roma, Italy
In this contribution we present the results of the numerical modeling and performance optimization study of a diaphragm pump for drug infusion. The main objective is to develop a numerical model that replicates the pumping cycle (400ms) and also provides indications about the variation of pumping performance as consequence of the variation of the chamber-diaphragm system geometry, diaphragm ...
Dipartimento di Energetica “Sergio Stecco”, Università degli Studi di Firenze, Firenze, Italy
Energy performances and building energy quality can be achieved by high performance envelopes. In this paper the thermal performance of a naturally ventilated façade, applied to a traditional wall, widely used in existing buildings, was investigated by a transient simulation. A three dimensional model of the façade was investigated in Florence and Treviso (Italy). The simulation ...
P. Takhar, and S. Zhang
Texas Tech University, Lubbock, Texas, USA
Visualization Sciences Group Inc., Burlington Massachusetts, USA
This work demonstrated the importance and feasibility of experimental image to simulation workflow. The workflow is successfully applied to a food processing study, where multiphysics and multiscale modeling based on 3D experimental image reconstruction contributes to the preservation of corn, one of the major food sources for the world population.
Department of Mechanical Engineering, College of Engineering and Petroleum, Kuwait University, Safat, Kuwait
In this study, numerical simulations of mixing in turbulent flow, subject to a change in density, are performed. Attention is focused on the binary mixing between two streams of fluid in which a variable density step are formed due to a difference in the temperature. This binary mixing problem performed by assuming low Mach number flow. The results demonstrate the variable density effects and ...
J. Font-Capó, A. Nardi, M. Mendoza , E. Ruiz, S. Jordana, J. Molinero, P. Trinchero, J. Vargas
Amphos 21 Consulting, Barcelona, Spain
Amphos 21 Perú, Lima, Perú
Worley Parson/TWP, Lima, Perú
Some of the present metallic ores mines are located in areas formed by a heterogeneous fractured massif where groundwater flows preferentially through fractures. Underground mining in these zones can cause impacts in streams, lakes and change the natural water balance of the watersheds, leading to conflicts between traditional uses of water and the mining activity. Quantification of these ...
E. Salomatova, D. Trushnikov, V. Belenkiy, V. Tsaplin
Perm National Research Polytechnic University, Perm, Russia
In this paper describes an original method for indirect measurement of the vapor pressure and temperature in the keyhole in electron beam welding. This method is based on the determination of the concentration of chemical elements in the vapor above the welding zone. Taking into account these data model is built 2D diffusion processes with heat and mass transfer elements in the melt, which ...
N. N. V. Ramirez, L. M. Raymundo, J. O. Trierweiler
Federal University of Rio Grande do Sul, Porto Alegre, RS, Brazil
It is desired to design a photobioreactor for the production of voluminous samples of microalgae for lipid quantification. The reactor should provide good growing conditions even with periodic withdrawal of samples. It also should be compact for better use of laboratory space. Therefore, a photobioreactor with concentric tubes was modeled to verify the circulation of the culture medium. The ...
Numerical Calculation of Effective Density and Compressibility Tensors in Periodic Porous Media: A Multi-Scale Asymptotic Method
C. Lee, M. Leamy, and J. Nadler
School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, GA, USA
Georgia Tech Research Institute (GTRI), Georgia Institute of Technology
A major issue in predicting and controlling (via design) absorption properties of rigid porous media is the determination of the frequency-dependent effective density and compressibility tensors. Unlike previous research efforts which employ in-house and, oftentimes, multiple numerical procedures for determining these two essential tensors, we formulate their solution in terms of a set of ...
A. A. Roy, V. Bojarevics, and K. Pericleous
University of Greenwich
The aim of this article is to demonstrate the capability of the software for predicting free-surface motion and internal fluid flow in an electromagnetically levitated sample of liquid metal. Multiphysics solutions which demonstrate the usefulness of Comsol as a powerful MHD simulation tool have been generated to two industrial problems using the ALE moving-mesh module in combination with the ...
P. Lin, C. Chang, H. Huang, and B. Zheng
Mechanical and Aerospace Eng., Rutgers, The State University of New Jersey, Piscataway, NJ
FTR Systems (Shanghai) Inc., Shanghai, China
PolarOnyx, Inc., San Jose, CA
School of Mechatronics Eng., University of Electronic Science and Technology of China, Chengdu, China
The heat sink designs using impinging liquid jets, which form stagnation flows, feature uniform heat transfer coefficients, and provide thin thermal boundary layers, are studied to reduce the heat from GPUs. Three different designs using central, micro, and uniform-cross-section (UCS) central jets are studied and simulated in COMSOL. The efficiency factors, defined as the ratio of total ...