Fun with Fluid mechanics
- Hvordan får man noget til at flyde? Synke?
- Hvordan blander man gas, så det brænder? Eksploderer?
- Hvorfor svinger det, når vand strømmer forbi en snor?
Rigtigt mange af de projekter jeg har arbejdet med gennem tiden, har haft fluid mekanik som omdrejningspunkt.
Med en luftfyldt tørdragt, kunne jeg bære en sovende danser på vandet. https://christian.liljedahl.dk/dry-suit-up/
Specific gravity af Christian. Jeg mindsker min massefylde ved at øge mit volumen.
Propane powered water cannon
An explosion of propane and air shoots a jet of water away. A clever non-return-valve setup fills the barrel with water. Fitted on a little raft to sail around with it.
Grill Your Darlings
Screaming kids burning toys with a voice controlled flamethrower. Not about destruction, but transformation of mass produced toys through the fire and energy of your screams. A microphone connected to an Arduino board sensing the magnitude of the scream - The Arduino activate a solenoid opening up the gas flow
Gas + Air = Fire
Experiments with mixing air and propane using the venturi effect - like a bunsen burner. This little guide should show you one way to make it work.
Pulse jet trombone
A pulse jet becomes an insane trombone with a slide to change the length of the exhaust pipe. First experiments with this was done by Tobias Lukassen and I at illutron, after I had been doing various experiments with getting propane to explode in different ways. I started out doing
Pulse jet Symphony
In 2016 the pulse jet trombones met composer Lars Kynde, and this resulted in a series of concerts with the pulsejets. First concert was in Fælledparken in Copenhagen as part of KLANG festival of 2016. We spent quite some time transforming the pulse jet trombones from an experimental piece of
Kraken - Havdans - The sinking ship
An old sailboat hidden at the bottom of the harbour. At a push of a button, the boat rises to the surface for a little while - Then disappear beneath the waves again. Later this project turned into a dance performance as a collaboration with Børnekulturstedet Karens Minde. * First version
Pump julen op
A Christmas Tree hidden under water. Pump it up to get it floating. 10. december 2013 I did this installation for Streetheart Street Art Christimas Calendar. The tree had a flotation chamber attached, that would be filled with air by the foot pump. And then slowly released again to make
Water Kites
Like flying kites in the sky - but done in a river or stream. Multiple lines make the water kites steerable.
I came up with this during a residency in Linz at the ship Eleonore. This is something that needs to be explored further in the future. Some sketches from
Play in the artificial creek
I made a small artificial creek for kids to play in. A pump pulling up water from the harbour and letting it flow down a canal made of wood. Kids in the city don’t have the possibility to experience the joy of playing in a stream of water. Open play
Strings singing in a stream
During my stay in Linz at “Eleonore” I played quite a bit with strings in the flowing water of Donau. Turned out these strings produced quite amazing sounds as they start to vibrate as the water flows past them.
I have explored the concept a bit since, but much more