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Issue link: https://adp.epubxp.com/i/742392
www.ADandP.media within a proton exchange (or polymer electrolyte) membrane fuel cell (PEMFC). Up to now, Fluent capably modeled the catalyst layers around the membrane (gas diffusion layer, gas channel, collectors, and cooling channels), with the gas diffusion layer directly touching the catalyst layer. Now Fluent can model the anode and cathode micro porous layers (MPL) as separate layers (i.e., with different properties compared to the gas diffusion layers). Another enhancement to the PEM module involves water. Explains Sovani, "As the hydrogen and oxygen combine in the fuel cell, water is formed as a byproduct. Managing that water is important. That's one of the biggest challenges in fuel cell development." The PEM module now includes three new water management models: liquid water transport in porous media (a new equation for the porous media solves for capillary pressure equation in the membrane in the catalyst), liquid water transport in the gas channels (the result yields meaningful values to model pressure drop through the viscous resistance), and dissolved phase water transport in the membrane and catalyst assembly (a rigorous transport equation treats the dissolved water as a third phase in the membrane electrode assembly, MEA). EXPANDING SYSTEM SIMULATIONS Ansys Simplorer is an analysis tool for system-level simulations. The latest version includes native Modelica support, which enables Simplorer to import Modelica models, the Modelica standard library, and lightweight Modelica capabilities. This addition increases the functionality of system models within Simplorer. Think about simulating brake systems, which include hydrau- lics, pneumatics and electronics. That entire simulation can now be done in one place: Simplorer. The Simplorer power systems library also now includes additional basic elements, sources and transforms (converters, signal generators, frequency-dependent elements). ANOTHER VOTE FOR 26262 "Software has become a safety critical aspect in many systems, especially cars," says Sovani. "All this emergent software is potential for catastrophic failures. The automotive industry has organically grown to develop this software. They need a better process to develop this software in a safety critical way." Enter the Ansys Safety Critical Application Develop- ment Environment (SCADE) tools for designing the embedded software in the microprocessor-based devices and controllers scattered throughout today's vehicles. The suite encompasses requirements manage- ment, model-based design, simulation, verification, qual- ifiable/certified code generation, interoperability with In Fluent 17.0, the anode and cathode micro porous layers of proton exchange membrane fuel cells can be modeled separately from the gas diffusion layers. The result: more accurate simulations. Cooling Channel(s) Anode Collector Anode Gas Diffusion Layer (Electrode) Anode Micro Porous Layer (MPL) Anode Catalyst Layer (TPB) Cathode Catalyst Layer (TPB) Cathode Micro Porous Layer (MPL) Cathode Gas Diffusion Layer (Electrode) Cathode Collector Cooling Channel(s) e - Load Gas Channel (air) Gas Channel (H 2 ) Electrolyte Membrane H + H + 2H 2 4H + +4e - 0 2 +4H + +4e - 2H 2 0 31 AD&P; ∕ NOVEMBER 2016 CAE