In the study, the thermal-hydraulic performance of the zigzag channels with circular cross-section was analyzed by Computational Fluid Dynamics (CFD). The standard K-Ꜫ turbulent scalable wall functions were used for modeling. The wall temperature was assumed constant 353 K and water was used as the working fluid. The zigzag serpentine channels with bend angles of 5 - 45° were studied for turbul...

In this study, a periodic zigzag channel with rectangular cross-section has been used in order to obtain a high-efficiency system for cooling a polymer electrolyte fuel cell. An appropriate function of fuel cells and enhancement of their lifetime require uniform temperature conditions of around 80°C. On the other hand, due to volume and weight constraints, a low-density compact heat exchanger i...

The existing flow channels like parallel and gird have been modified for better fuel distribution in order to boost the performance of direct methanol cell. main objective work is achieve minimized pressure drop channel, uniform methanol, reduced water accumulation, oxygen supply. A 3D mathematical model with serpentine channel simulated cell temperature 80 °C, 0.5 M concentration. study result...

*Correspondence: Peiwen Li , Department of Aerospace and Mechanical Engineering, The University of Arizona, 1130 North Mountain Avenue, Tucson, AZ 85721, USA e-mail: [email protected] In this study, a significant number of experimental tests to proton exchange membrane (PEM) fuel cells were conducted to investigate the effect of gas flow fields on fuel cell performance. Graphite plates w...

In this paper, we report the development of a simple inertial microfluidic device with a serpentine channel for efficiently separating blood cells from plasma. The working mechanism of this device relies on the two-sided secondary flow aided inertial focusing of particles in a serpentine channel. Specifically, blood cells were focused along two sides of the channel, while the blood plasma was c...

For a PEMFC to work better, adding baffles flow channel can improve reactant transfer. As result, the starts by developing 3-D numerical model for vanadium redox battery (VRFB) using COMSOL Multiphysic Simulation Software. By incorporating into serpentine channel, it is possible simulate changes in ion concentration and terminal voltage. The findings indicate that efficiency will be impacted ba...

The flow-field design based on under-rib convection plays an important role in enhancing the performance of polymer electrolyte membrane fuel cells (PEMFCs) because it ensures the uniform distribution of the reacting gas and the facilitation of water. This research focused on developing suitable configurations of the anode and cathode bipolar plates to enhance the fuel cell performance based on...

Computational fluid dynamics (CFD) simulations were performed for four 10 cm2 serpentine flow-fields with single channel, double channel, cyclic-single channel, and symmetric-single channel patterns to investigate the effect of flow-field design. High and low inlet humidity operating conditions were studied by calculating the distributions of overpotentials, current density distribution, and me...

In this paper, we propose a deadlock-free wormhole routing scheme called the Zigzag routing for the panMesh, which generalizes the mesh topology. Accordingly, we prove that only two virtual channels are needed for deadlock-freeness on every physical channel by using the Zigzag routing.