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  • VERIFI 2017 Video Compilation - Duration: 18 minutes.

    • 1 year ago
    • 163 views
    This is a compilation of 18 VERIFI videos that were shown in Argonne National Laboratory's booth at the 2017 SAE World Congress in Detroit. There is no audio. Descriptive text follows each video s...
  • High-Fidelity Turbulent Combustion Simulations - Duration: 54 seconds.

    • 2 years ago
    • 355 views
    High-fidelity turbulence models such as Large Eddy Simulations together with advanced combustion models are essential tools for predictive internal combustion engine simulation since they offer the...
  • Spray-Wall Interaction Modeling - Duration: 46 seconds.

    • 2 years ago
    • 235 views
    Current applications of spray-wall interaction involve sub-models based on empirical relations that are the results of experimental observations. This implies an extensive use of tunable parameters...
  • Simulating Gas Exchange Processes in SI Engines - Duration: 65 seconds.

    • 2 years ago
    • 366 views
    A source of cyclic variability in engines is due to the gas exchange processes occurring during intake and exhaust valve motions. The gas exchange processes can result in subtle differences in flow...
  • Plume-to-Plume Variations in Multi-hole Injector Simulations with Needle Transients - Duration: 73 seconds.

    • 2 years ago
    • 240 views
    In this video, researchers simulated the fuel flow inside the sac and orifice of a five-hole diesel fuel injector. This simulation accounts for both injector needle lift and needle off-axis motion ...
  • Optimizing Gasoline Compression Ignition Performance - Duration: 116 seconds.

    • 2 years ago
    • 261 views
    Gasoline compression ignition (GCI) is a low-temperature combustion mode, in which gasoline is combusted within a diesel engine purely through compression. Due to high levels of premixing and seque...
  • Nozzle Flow Simulations Accounting for Need Transients - Duration: 69 seconds.

    • 2 years ago
    • 161 views
    This video clip shows an x-ray visualization inside a single-hole diesel fuel injector nozzle. Video created by the Virtual Engine Research Institute and Fuels Initiative (VERIFI) at Argonne Nation...
  • Multi-hole Injector Simulations and Needle Transients - Duration: 87 seconds.

    • 2 years ago
    • 180 views
    This video shows the multi-dimensional flow inside the fuel injector sac and orifice of a five-hole diesel fuel injector, accounting for injector needle lift and wobbling. We believe that these are...
  • Modeling Heat Loss Piston Surfaces in Diesel Engines - Duration: 64 seconds.

    • 2 years ago
    • 938 views
    Predicting heat loss through solid surface in an engine cycle is essential in predicting the overall efficiency of the engine. It enables investigation of coating methodologies to reduce the heat l...
  • Fuel Dribble Phenomenon during End-of-Injection from a Multi-hole Injector - Duration: 41 seconds.

    • 2 years ago
    • 750 views
    The flow inside a modern fuel injector is extremely complicated and is characterized by fuel dribbles that are known to increase emissions during the end-of-injection. This video shows the first o...
  • Flow Inside the Orifice and Sac during the End-of-Injection Transients - Duration: 54 seconds.

    • 2 years ago
    • 112 views
    Modern combustion systems rely on multiple fuel injections to control the fuel-air mixing processes, but accurate end-of-injection behavior has not been predictable with tools available to date. Th...
  • Flash Boiling in GDI Systems - Duration: 47 seconds.

    • 2 years ago
    • 653 views
    Flash boiling is common in GDI systems. High-temperature fuel upon injected to sub-atmospheric chamber pressure (part-load), experiences superheated condition. The intensity of flashing increases w...
  • Dual Fuel Low-Temperature Combustion Engine - Duration: 89 seconds.

    • 2 years ago
    • 3,543 views
    Video showing full cycle operation of the Chrysler Dual Fuel engine. Gasoline is injected early during the compression strokes and forms a fairly homogeneous fuel-air mixture inside the combustion ...
  • Capturing Cyclic Variation in SI Engine Combustion - Duration: 55 seconds.

    • 2 years ago
    • 247 views
    Video showing two consecutive cycles out of 30 cycles from a high-fidelity simulation of combustion in a gasoline port-fuel-injection spark-ignited (SI) engine, created by the Virtual Engine Resear...
  • Compression Ignition Operation with Naptha Fuel - Duration: 59 seconds.

    • 2 years ago
    • 176 views
    Video showing comparisons of a heavy-duty engine operated with a Naphtha fuel. The first is a comparison against standard ultra-low sulfur diesel (ULSD) under mixing-controlled combustion mode. The...
  • Video of Janardhan Kodavasal from the February 25, 2016 webinar "Applying High Performance Computing to Engine Design using Supercomputers" sponsored by Convergent Science Inc. and Argonne National Laboratory

    WEBINAR Applying High Performance Computing to Engine Design using Supercomputers - Duration: 52 minutes.

    • 2 years ago
    • 226 views
    Video from the February 25, 2016 Convergent Science/Argonne National Laboratory webinar “Applying High Performance Computing to Engine Design using Supercomputers,” featuring Janardhan Kodavasal of...
  • Gasoline Compression Ignition - Start of Injection Timing Sweep - Duration: 82 seconds.

    • 3 years ago
    • 1,935 views
    Start of Injection Timing Sweep
  • Gasoline Compression Ignition - Effect of Injection Timing - Duration: 82 seconds.

    • 3 years ago
    • 468 views
    Effect of Earlier Versus Later Injection Timing
  • Multi-hole Injector Simulations and Needle Transients - Duration: 68 seconds.

    • 4 years ago
    • 2,933 views
    This video shows the multi-dimensional flow inside the fuel injector sac and orifice of a five-hole diesel fuel injector, accounting for injector needle lift and wobbling. We believe that these are...
  • Plume-to-Plume Variations in Multi-hole Injector Simulations with Needle Transients - Duration: 53 seconds.

    • 4 years ago
    • 1,169 views
    In this video, we simulated the fuel flow inside the sac and orifice of a five-hole diesel fuel injector. This simulation accounts for both injector needle lift and needle off-axis motion or wobble...
  • Flow Inside the Orifice and Sac during the End-of-Injection Transients - Duration: 67 seconds.

    • 4 years ago
    • 207 views
    Modern combustion systems rely on multiple fuel injections to control the fuel-air mixing processes, but accurate end-of-injection behavior has not been predictable with tools available to date. Th...
  • Large Eddy Simulations for Predicting the Spray Stochastics Resulting in Cyclic Variability - Duration: 66 seconds.

    • 4 years ago
    • 418 views
    The random nature of fuel spray leads to significant cycle-to-cycle variations in engines. Advanced turbulence models such as Large Eddy Simulations offer the potential of capturing these cyclic va...
  • Highest-Fidelity Compression Ignition Engine Simulation for Grid Convergence - Duration: 70 seconds.

    • 4 years ago
    • 2,422 views
    This video shows what we believe is the largest diesel engine combustion simulation ever performed. The 50-million peak cell count simulation was performed on the high-performance computing cluster...
  • Dual-Fuel Low-Temperature Combustion Engine Simulation - Duration: 70 seconds.

    • 4 years ago
    • 6,825 views
    Dual-fuel combustion technologies have gained momentum in recent years because they offer the potential for high efficiencies combined with low emissions. However, questions remain about the condit...
  • Shock Waves in Combustion Chambers - Duration: 69 seconds.

    • 4 years ago
    • 1,609 views
    Shock waves have been reported in combustion chambers under low ambient temperature and density conditions. Although such conditions may not prevail in an actual combustion engine, since constant v...
  • Gasoline Compression Ignition Engine - Duration: 100 seconds.

    • 4 years ago
    • 4,695 views
    Gasoline Compression Ignition is a low-temperature combustion mode, in which gasoline is combusted within a diesel engine purely through compression. This video shows a portion of the Gasoline Comp...
  • Nozzle Flow Simulations Accounting for Needle Transients - Duration: 52 seconds.

    • 4 years ago
    • 430 views
    This video shows an x-ray visualization inside a single-hole diesel fuel injector nozzle.
  • High-Fidelity Turbulent Combustion Simulations - Duration: 74 seconds.

    • 4 years ago
    • 4,263 views
    Large Eddy Simulations of turbulence combined with advanced combustion models are essential tools for predictive internal combustion engine simulation, because they can capture cyclic variability. ...
  • Simulating Gas Exchange Processes in Spark Ignition Engines - Duration: 88 seconds.

    • 4 years ago
    • 1,928 views
    Gas exchange processes occurring during intake and exhaust valve motions are significant sources of cyclic variability in engines. These gas exchange processes can result in subtle differences in f...
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