M. J. Hancock, N. H. Elabbasi, M. C. Demirel
Veryst Engineering, LLC, Needham, MA, USA
The Pennsylvania State University, University Park, PA, USA
Pumping liquids at small scales is challenging because of the principle of reversibility: in a viscous regime, the flow streamlines through a fixed geometry are the same regardless of flow direction. Recently we developed a class of microfluidic pump designs based on tilted flexible structures that combines the concepts of cilia (flexible elastic elements) and rectifiers (e.g., Tesla pump). We ...
E. Robalinho, E. F. Cunha, M. Linardi
Universidade Nove de Julho - UNINOVE, São Paulo, SP, Brazil
IPEN/CNEN-SP, São Paulo, SP, Brazil
This computational implementation presents a new strategy of coupling two 3D models to satisfy the requirements of the comprehensive model of a unitary Proton Exchange Membrane fuel cell, including its internal geometries and constitutive materials, as well as distinct physical and chemical processes. Those different simultaneous processes required computational effort and the solution was the ...
E. Robalinho, E. Cekinski
IPEN/CNEN-SP, São Paulo, SP, Brazil; Universidade Nove de Julho - UNINOVE, São Paulo, SP, Brazil
Instituto Mauá de Tecnologia IMT, São Paulo, Brazil; IPT-SP, São Paulo, SP, Brazil
This paper presents the results of modeling of a microreactor with three inputs geometry (or crow's-feet), in relation to distributions of velocities and concentrations. The objective of this work is the study of this kind of geometry with relation to fluid dynamics behavior, improving the knowledge of microfluidics and microreactors projects. These numerical responses allow conclusions about the ...
Computational Study on Transition of Oil-Water Flow Morphology due to Sudden Contraction in Microfluidic Channel - new
J. Chaudhuri, S. Timung, T. K. Mandal, D. Bandyopadhyay
Indian Institute of Technology Guwahati, Guwahati, Assam, India
The flow morphology of two immiscible fluids in a microfluidic device finds numerous applications such as emulsification, synthesis of nanomaterials , lab-on-a-chip devices and biological analysis . It offers many advantages over the conventional macroscopic devices because of its availability for higher surface to volume ratio, ability to handle small volume of fluids, easier process ...
Simulation and Experimental Validation of Direct Heating of Dhruva Fuel Rod for β Heat Treatment - new
B. Patidar, A. P. Tiwari, V. Patidar, M. M. Hussain, K. K. Abdulla
Bhabha Atomic Research Centre, Mumbai, Maharashatra, India
β heat treatment of Uranium rods is carried out for randomization of oriented grains (called texture) developed during hot rolling or hot extrusion operation. During this process, Uranium rods undergo heating of up to 740 Deg C followed by water quenching. The objective of this work is to see the feasibility of direct heating technique for heat treatment application. At present, heat treatment ...
Modeling and Simulation of High Sensitivity CMOS Pressure Sensor Using Free Boundary Circular Diaphragm Embedded on Ring Channel Shaped MOSFET - new
S. Joy, T. Tom
Rajagiri School of Engineering and Technology, Kochi, Kerala, India
Sensors have diverse applications ranging from the medical field to space exploration. They convert physical parameters such as temperature, pressure, humidity etc. into an electrical output. The discovery of piezoresistivity property of silicon and germanium led to miniaturization of pressure sensors. Improvement in the sensitivity is the major factor to be considered while designing pressure ...
S. Kumar, and S. Panigrahi
 Agricultural and Food Engineering Department, Indian Institute of Technology Kharagpur, West Bengal, India
The novel concept of distributing the food super chilled (partially frozen) in order to prolong the shelf life has been suggested in the project. The temperature of the distribution chain is envisaged to be +5C. The suggested application has the following advantages: 1) Partial thawing of the product in the distribution chain makes it easier to handle. 2) The unhealthy and labour-demanding ...
N. C. Murmu, and D. K. Bhakta
 Tribology Division, Central Mechanical Engineering Research Institute, M. G. Avenue, Durgapur, West Bengal, India
Gas lubricated bearing has been developed for high accuracy in precision machines and equipments. Gas lubricated bearings are mainly two types: aerostatic bearings, which require a feed of pressurized gas for their operation, and aerodynamic bearings, which generate their own internal pressure differentials. The latter generate this pressure by the action of simultaneously shearing and squeezing ...
President and CEO, COMSOL
Svante Littmarck is the CEO of the COMSOL group. He co-founded COMSOL in 1986. He holds a M.Sc. in Applied Mathematics from the Royal Institute of Technology in Stockholm. In 2004 he received an honorary doctoral degree from the Royal Institute of Technology.
Bilotsky, Y., Gasik, M.
Laboratory of Materials Processing and Powder Metallurgy, HUT, Finland
The model for study of thermal mechanical behavior of multilayer thin films was developed. The stress-strain analysis was carried out in combination with thermal effects. The 2D thinfilm model has been solved by FEMLAB 3.1i. The middle layer was thermally loaded with Ohmic heating and other layer’s thicknesses were varied in time. All material data like elastic coefficients, thermal ...