PhD Candidate Marcel Ahrens at the new heat pump prototype. When it is mounted the room will be closed off during testing. Location: basement of Varmetekniske laboratorier in Kolbjørn Hejes v. 1B. Photos taken 7 June 2022, by Maren Agdestein.

PhD Candidate Marcel Ahrens at the new heat pump prototype. When it is mounted the room will be closed off during testing. Location: basement of Varmetekniske laboratorier in Kolbjørn Hejes v. 1B. Photos taken 7 June 2022, by Maren Agdestein.

PhD Candidate Marcel Ahrens at the new heat pump prototype. When it is mounted the room will be closed off during testing. Location: basement of Varmetekniske laboratorier in Kolbjørn Hejes v. 1B. Photos taken 7 June 2022, by Maren Agdestein.

PhD Candidate Marcel Ahrens at the new heat pump prototype. When it is mounted the room will be closed off during testing. Location: basement of Varmetekniske laboratorier in Kolbjørn Hejes v. 1B. Photos taken 7 June 2022, by Maren Agdestein.

PhD Candidate Marcel Ahrens at the new heat pump prototype. When it is mounted the room will be closed off during testing. Location: basement of Varmetekniske laboratorier in Kolbjørn Hejes v. 1B. Photos taken 7 June 2022, by Maren Agdestein.

PhD Candidate Marcel Ahrens at the new heat pump prototype. When it is mounted the room will be closed off during testing. Location: basement of Varmetekniske laboratorier in Kolbjørn Hejes v. 1B. Photos taken 7 June 2022, by Maren Agdestein.

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