![]() ![]() The engine, sink_engine, is modeled as a simple sink consuming a constant flow rate of fuel. Pumps are positioned between the tanks to transfer fuel from the vent tank to the wing tank and from the wing tank to the center tank. In order to equilibrate the gases in each of the tanks, pipe8 and pipe9 are connected between the tanks and positioned so that they are at a height above the liquid level. The tanks are positioned such that the origin of the vent tank is higher than the origin of the wing tank which is higher than the origin of the center tank. The system contains three fuel tanks: vent tank, wing tank, and center tank. In Figure 1, the schematic shows the inerting study of the fuel system model. The Fuel-Air medium is composed of steam, oxygen, nitrogen, and JetA fuel. Inerting is done by feeding nitrogen-enriched air (NEA) to reduce the fraction of oxygen in the tanks, to avoid accidental combustion of the fuel. Modelon Impact, equipped with the industry-leading Fuel System Library, enables engineers to build models seamlessly with pre-built components like fuel tanks, pipes, pumps, and other assets that can be simulated and validated with confidence.Ī fuel system model consists of a set of fuel tanks within an aircraft wing. Building and validating inerting systems as part of the fuel system design is critical for safety – in order to reduce oxygen levels, or air volume above fuel, to prevent combustion. The challenge of building a fuel system model that can also perform additional thermal studies like fuel tank inerting and flammability requires engineering expertise. In modern-day aircraft, both commercial and military, fuel tanks are not just used to store fuel, but they also act as a thermal sink – dissipating the engine-generated heat. Aircraft Fuel Tank Inerting System Design ![]() ![]() Part 2 of this blog series, Aircraft Fuel Systems, focuses on the modeling and simulation of components in an aircraft fuel tank. ![]() This is enabled by Modelon’s Fuel System Library, available in Modelon Impact. This blog focuses on designing and simulating an aircraft fuel tank inerting system model – allowing engineers to reduce the risk of combustion and flammability. ![]()
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