Photo of Mohammad Liravi EPT Studio 24 June 2024. Photo: Maren Agdestein/NTNU

Photo of Mohammad Liravi EPT Studio 24 June 2024. Photo: Maren Agdestein/NTNU

Photo of Mohammad Liravi EPT Studio 24 June 2024. Photo: Maren Agdestein/NTNU

Entry for EPT 2024 Photo Competition. Title: Blowing out a candle - Visualising heat waves with Schlieren photography Time series (left to right) showing blow out of a candle flame. Due to the difference in the refractive index of heated gas, the heat waves can be visualised by Schlieren photography. Light from a point source is aimed towards a spherical mirror which focuses the light back to a point, where a knife edge is placed to cut out undistorted light. In this way, any changes in the density caused by the candle, placed between the light and the mirror, appear as a sharp contrast (red/black) in the image due to refraction. Photo: Eirik Æsøy/NTNU

Photo for the EPT 2024 Photo Competition. The students of "TEP4285 Material Flow Analysis" were fortunate to visit Lerøy and learn about the development and issues related to aquaculture. Marte Vestvik, in front, is enjoying the excursion. Photo: Solveig Birgitte Jacobsen Aarak (student)

Entry for EPT 2024 Photo Competition. Skills and experience in teamwork were developed through practical sessions with the Expert in Teamwork village, "TKT4851 Innovation, Reuse, and CO2 Reduction in Construction and Infrastructure". From left to right, Solveig B. J. Aarak, Marthe Gremmertsen, Eline Klevjer, Alexander Grasto, and Alexander Søviknes engage in brainstorming and create a mind map together. Photo: student Juni Karlsen Tørnkvist/NTNU

Entry for EPT 2024 Photo Competition. The wake merging downstream of an acrylic disc with non-uniform blockage (right) and a wire disc (left) is investigated with hot-wire anemometry in the wind tunnel. Leon Li helped with the photo. Photo: Ingrid Johanne Neunaber/NTNU

Entry for EPT 2024 Photo Competition. Vortex shedding and Kármán vortex street in Nidelva. Photo: Reza Niroomand/NTNU

Entry for EPT 2024 Photo Competition. The FlameSheetTM combustor has the capability to operate with high hydrogen fuel blends due to a novel aerodynamically trapped vortex flame stabilization strategy and the corresponding increased flashback resistance due to its unique “U-bend” flow pattern, offering a carbon-free solution for the transition to pure hydrogen fueling. An optically-accessible laboratory-scale FlamesheetTM combustor has been developed to study the system dynamics during hydrogen operation. Photo: Qian Wang/NTNU

Entry for EPT 2024 Photo Competition. Light is the most beautiful way we see energy. This series of photos, taken during the aurora in Trondheim on March 23, 2024, focuses on this theme. I rushed to the NTNU campus and captured these photos in front of the EPT [Varmeteknisk] Building. Watching the aurora provides a rare opportunity to witness the beauty of Earth's celestial phenomena through the photons emitted when charged particles from the solar wind collide with the atmosphere - they are all about the energy. The first photo is named "Light Trails in Front of the Varmeteknisk Building"; The second photo is named "Energized Aurora's Touch on Classic NTNU"; The third photo is named "Vibrant Energy Flow of the Aurora: A View from EPT's Front Door".

Entry for EPT 2024 Photo Competition. Light is the most beautiful way we see energy. This series of photos, taken during the aurora in Trondheim on March 23, 2024, focuses on this theme. I rushed to the NTNU campus and captured these photos in front of the EPT Building. Watching the aurora provides a rare opportunity to witness the beauty of Earth's celestial phenomena through the photons emitted when charged particles from the solar wind collide with the atmosphere - they are all about the energy. The first photo is named "Light Trails in Front of the Varmeteknisk Building"; The second photo is named "Energized Aurora's Touch on Classic NTNU"; The third photo is named "Vibrant Energy Flow of the Aurora: A View from EPT's Front Door". Photo: Meng Jiang/NTNU

Entry for EPT 2024 Photo Competition. Video of the morning fog on the fjord at Trondheim harbour from NTNU viewpoint: we witness the beautiful interplay of saturated condensation and evaporation, showcasing the dynamic principles of psychrometrics. As the fog forms and dissipates, it visually represents the changes in moisture content and temperature, fundamental to understanding air-water vapor interactions. Photo: Azimil Gani Alam/NTNU

Entry for EPT 2024 Photo Competition. Erik is doing welding on some frame. Photo: Khalid Hamid/NTNU

Entry for EPT 2024 Photo Competition. In this video, the transient structures arising from the dynamic operation of the sliding door are simulated. The transmission of passive scalar concentration between the isolation room (blue color) and the anteroom (red color), connected via a sliding door in the middle of a partition wall, is visualized from a top view on a plane situated 1 meter above the floor. The motion of the door initiates complex airflow patterns that can result in the escape of potentially contaminated air. Photo: Elyas Larkermani/NTNU

Entry for EPT 2024 Photo Competition. The wake merging downstream of an acrylic disc with non-uniform blockage (left) and a wire disc (right) is investigated with hot-wire anemometry in the wind tunnel. Leon Li helped with the photo. Photo: Ingrid Johanne Neunaber/NTNU

Entry for EPT 2024 Photo Competition. A look at wind induced waves on water surface from inside water illuminated by green laser. Photograph is a single image with no enhancements. Photo: Adharsh Shankaran/NTNU

Entry for EPT 2024 Photo Competition. Condensation of water vapor in the mineral wool insulation sample during cooling of the sample bottom. Larger droplets are distributed in the group close each other, as they grow at the expense of smaller droplets during condensation process. Daniela Damaceno, SINTEF Energy Reasearch, helped with the photo. Photo: Hristina Dragovic/NTNU

Entry for EPT 2024 Photo Competition. The ammonia/hydrogen/nitrogen flame in the long confinement (H=260mm) near lean blow-off at 40m/s has the oscillation phenomena, which looks like a beating heart. Photo: Tong Su/NTNU

Entry for EPT 2024 Photo Competition. In the course "TEP4220 - Environmental impact indicators for decision support" we had an interactive lecture where we collected scientific data by taking photos of species on campus with the app, "iNaturalist". The specie in the photo is an edible mushroom called "Matblekksopp" in Norwegian, "Lawyer's Wig" in English, and "Coprinus comatus" in Latin. Photo: Solveig Birgitte Jacobsen Aarak (student)

Entry for EPT 2024 Photo Competition. The FlameSheetTM combustor has the capability to operate with high hydrogen fuel blends due to a novel aerodynamically trapped vortex flame stabilization strategy and the corresponding increased flashback resistance due to its unique “U-bend” flow pattern, offering a carbon-free solution for the transition to pure hydrogen fueling. An optically-accessible laboratory-scale FlamesheetTM combustor has been developed to study the system dynamics during hydrogen operation. Photo: Qian Wang/NTNU

Entry for EPT 2024 Photo Competition. The FlameSheetTM combustor has the capability to operate with high hydrogen fuel blends due to a novel aerodynamically trapped vortex flame stabilization strategy and the corresponding increased flashback resistance due to its unique “U-bend” flow pattern, offering a carbon-free solution for the transition to pure hydrogen fueling. An optically-accessible laboratory-scale FlamesheetTM combustor has been developed to study the system dynamics during hydrogen operation. Photo: Qian Wang/NTNU

Entry for EPT 2024 Photo Competition. This captivating photograph captures the mesmerizing beauty of a wing-tip vortex, a flow phenomenon created by the pressure differences at the tips of aircraft wings and wind turbine blades. In collaboration with Onera, France, we explored the effects of inflow turbulence on these wingtip vortices from a finite NACA0012 wing, using NTNU's Large-Scale Wind Tunnel equipped with an active turbulence grid. This image was captured using smoke-flow visualization with laser illumination during the experimental campaign, highlighting the intricate dynamics of wingtip vortices. Photo: Srikar Yadala Venkata/NTNU

Entry for EPT 2024 Photo Competition. This video showcases the entrancing movement of a meandering tip vortex, with a high-power laser illuminating a cross-section of it. Tip vortices are fluid phenomenon created by the pressure differences at the tips of aircraft wings and wind turbine blades. While in ideal conditions, the vortex would gracefully weave and undulate through space, with the addition of turbulence, its path becomes chaotic and unpredictable. This captivating display reveals the complex interplay of aerodynamics and turbulence. Understanding this chaotic behavior is crucial for mitigating challenges in aeronautical engineering and wind energy applications, providing deeper insights into their impact on aircraft performance and wind turbine efficiency. Photo: Srikar Yadala Venkata/NTNU

Entry for EPT 2024 Photo Competition. Fluid Symphony: Harmonizing Laminar and Turbulent Forces Description: A harmonious collision of laminar and turbulent flow features is visualized in this photograph during an experimental campaign in NTNU’s Large Scale Wind Tunnel. Here, the orderly honeycomb structure in the freestream arising from laminar conditions contrasts with the graceful roll-up of a vortex at the tip of a NACA0012 wing due to turbulent flow phenomena. This juxtaposition offers a captivating glimpse into the dynamic dance between different flow regimes, providing a visual testament to the intricate complexities of fluid motion. Srikar Yadala Venkata/NTNU

Entry for EPT 2024 Photo Competition. Vortex shedding and Kármán vortex street in Nidelva. Video: Reza Niroomand/NTNU