Interfering with the airflow
Further, they plan on attaching a speaker to the wind tunnel, which will influence the pattern of the airflow, Dittmann explains.
That is because the air pressure from the speaker will have to move through the tubes and into the wind tunnel, thus interfering with the consistent airflow. Additionally, they will be able to adjust the volume and the frequency of the music with the control panel.
“We’re also adding a smoke machine so that you can actually see what the airflow looks like coming out when the volume is turned up or the frequency is changed,” she says.
The group is still not sure how the airflow will interact with the sound waves when a speaker is attached.
The smoke machine demonstrates what happens to the airflow as a speaker is attached to the wind tunnel. Photo: Noa Cecilie Sæther, OsloMet
“Maybe you get jet flow that’s stable for longer, or maybe it spreads out more. Maybe you destroy the entire jet flow. You don’t know unless you do complex math, or you build something like this.”
Focus on the process
“We set the meetings ourselves, and we decide how many hours we want to work. We also have two lectures a week and supporting courses,” says Hoekstra.
As well as a report, a presentation, and the project itself, the programme includes two supporting courses: “Project Planning and Management” and “Collaboration and Communication in English”. Additionally, the students have chosen to take Norwegian classes for an extra 7.5 ECTS credits.
“It’s nice not to have a gazillion other courses and just be able to focus on building something. Our exchange semester is definitely not a full-on vacation, but we still have time to do other things,” Hoekstra says.
Throughout the semester the group regularly gets feedback from their supervisor, Professor Ramis Örlü.
“Ramis has been a godsend, he’s been great. When we have needed guidance, he’s been there,” says van der Meulen.
Hoekstra adds that some students actually can do an EPS project as their bachelor’s thesis. Therefore, some groups might put in a few extra hours a week.
“What I like about the EPS project is that the focus is on the process, rather than the end result. Let’s say we build something that doesn’t work; if we can report on why it didn’t work, we won’t fail the class.”
The end project will have a control panel, speaker, and smoke machine attached. Photo: Noa Cecilie Sæther
Working together
Even though they all help each other when needed, the group usually spreads out the tasks between the members based on their studies and backgrounds.
Van der Meulen has mainly been working on the smoke modules, which are almost finished. Now, he is researching how to use the project in education and demonstrations.
Lind has mainly designed and cut the wooden component of the control panel and is currently 3D-printing the legs. He has also been ordering new parts online.
Dittmann is the only one with electronics in her studies. Therefore, she designed the circuit and made the first draft of the control panel. Now she plans on soldering all the switches together, which are currently duct taped.
Hoekstra studies computer science and has therefore done most of the programming.
“But it doesn’t mean I’m only programming. Then I would be on vacation for half the semester. Even though we do the tasks linked to our studies, we don’t exclusively do that,” Hoekstra points out.