Entry for EPT 2024 Photo Competition. This is a simulation of the water surface topology under the disturbance of an array of surface penetrating dowels. The flow is going from left to right, and the disturbance sources are indicated by the yellow dots. The dowels are modelled as pressure disturbances on the surface. Prof. Simen Ellingsen derived the analytical equation for the surface topology. Photo: Leon Li/NTNU

A bidirectional airflow between two adjacent, non-isothermal rooms with a person standing in the doorway This video was created using the ParaView based on the simulation results from REEF3D code. Video: Elyas Larkermani/EPT

Monte Carlo simulation of discotic liquid crystals. The anchoring can be tuned at either substrate by varying the extent to which a particle is allowed to penetrate it. If the anchoring at the two substrates are very different, there is a linear variation from planar alignment at one substrate to homeotropic at the other. Video for the EPT 2022 Photo competition. Video by Candy Deck/NTNU

Reading distribution air meters of the ventilation system. Photo for EPT 2022 Photo competition. Photo : Khalid Hamid/NTNU

Photo for EPT 2022 Photo competition. Photo : Khalid Hamid/NTNU

Inspection and adjustment of mass flows during operation. Photo for EPT 2022 Photo competition. Photo : Khalid Hamid/NTNU

Inspecting discharge nozzle for tightness to prevent the leakage of the CO2 refrigerant. Photo for EPT 2022 Photo competition. Photo : Khalid Hamid/NTNU

Inspection and adjustment of mass flows during operation. Photo for EPT 2022 Photo competition. Photo : Khalid Hamid/NTNU

Photo for EPT 2022 Photo competition. Photo : Khalid Hamid/NTNU

Inspection and adjustment of mass flows during operation. Photo for EPT 2022 Photo competition. Photo : Khalid Hamid/NTNU

Observing and checking high-pressure side glass for refrigerant flow. Photo for EPT 2022 Photo competition. Photo : Khalid Hamid/NTNU

Observing and checking high-pressure side glass for refrigerant flow. Photo for EPT 2022 Photo competition. Photo : Khalid Hamid/NTNU

Monitoring and reading high-pressure values during operation. Photo for EPT 2022 Photo competition. Photo : Khalid Hamid/NTNU

In this presented work, we have used Direct numerical simulation of a bubbly and buoyant turbulent flow and showed the break-up and coalescence of bubbles due to the maintained turbulence. Vertical component of fluid velocity with contours of vof=0.5 representing the bubbles are shown in the depicted picture. Photo for the EPT 2022 Photo competition. Photo: Shahab Mirzareza/NTNU

”. This is high-speed synthetic Schlieren visualization of the transient dynamics of free-surface flow around a cylinder. Acknowledgement: we thank the Thermo-fluids group for their help in the lab. Video for EPT 2022 Photo competition. Video by Yi Hui Tee, Balamurugan Ganesan/NTNU

The image displays an active grid generating turbulent flow in a wind tunnel. Photo for EPT 2022 Photo competition. Photo: Yannick Jooss/NTNU

It’s a high-speed video with a framerate of 1000 fps, recorded with a Photron SA5 camera at the Waterpower Laboratory at NTNU. It shows the development of air bubbles in water within a 20 kHz ultrasonic field, and the representative filamentary bubble structures. Enjoy viewing science that seems somewhat unearthian. Video for EPT 2022 Photo competition. Video by W. Ludwig Kuhn/NTNU

Animation of isosurfaces of normalized, phase-averaged swirl strength. The isosurfaces are colored by the normalized vorticity about the x-axis. The animation shows all phases and can be looped. Fields are obtained experimentally using Shake-the-Box (4D Particle Tracking Velocimetry) and fine-scale grid reconstruction.Photo/Video for the EPT 2022 Photo competition. Photo/Video: Johannes Næsset Hillestad/NTNU

Plot of isosurfaces of normalized, phase-averaged swirl strength. The isosurfaces are colored by the normalized vorticity about the x-axis. Fields are obtained experimentally using Shake-the-Box (4D Particle Tracking Velocimetry) and fine-scale grid reconstruction.Photo/Video for the EPT 2022 Photo competition. Photo/Video: Johannes Næsset Hillestad/NTNU

Un-edited DSLR photograph of two actuator discs in the water channel. The discs are viewed head-on, the lens is focused on the downstream one. This allows us to see through the upstream one. Photo/Video for the EPT 2022 Photo competition. Photo/Video: Johannes Næsset Hillestad/NTNU

Plot of particle tracks in the wake of a model wind turbine. The tracks are colored by the normalized streamwise velocity. The tracks are obtained experimentally using Shake-the-Box (4D Particle Tracking Velocimetry). Photo/Video for the EPT 2022 Photo competition. Photo/Video: Johannes Næsset Hillestad/NTNU

Un-edited DSLR photograph of a model wind turbine in the water channel. The flow is illuminated and seeded, hence the visible particles. Photo/Video for the EPT 2022 Photo competition. Photo/Video: Johannes Næsset Hillestad/NTNU

Plot of isosurfaces of normalized, phase-averaged swirl strength. The isosurfaces are colored by the normalized vorticity about the x-axis. Fields are obtained experimentally using Shake-the-Box (4D Particle Tracking Velocimetry) and fine-scale grid reconstruction. Photo/Video for the EPT 2022 Photo competition. Photo/Video: Johannes Næsset Hillestad/NTNU

Un-edited DSLR photograph of two actuator discs in the water channel. Photo/Video for the EPT 2022 Photo competition. Photo/Video: Johannes Næsset Hillestad/NTNU

Getting good help from nice colleges as a master’s student at EPT. Photo/Video for the EPT 2022 Photo competition. Photo/Video by Astri Nore/NTNU