Laura Bogstad

Day9 (15.02.2011)



Key words for this phase

  • Airflow
  • Orientation
  • Spatial composition
  • Material composition
  • Joints

Day8 (14.02.2011)

The work in this phase was based on a chosen strategy regarding the wind flows. I chose to work with a setup that would lead the wind around and not inside it. Creating a shelter from the wind was the first part of the strategy. I also tried to create an atmosphere of safety and comfort by working on the contrast between the atmosphere  in and outside of the setup.

By using the rushing wind as a sound effect, this becomes a way of creating a cold and harsh atmosphere, of the outside. Sheltered from this wind can increase ones the feeling of safety and comfort of being inside.This feel can be compared to listening to the rain under an inclined roof.

To create these sound effects the wind has to flow past an element creating vibrations. This effect is much like what happens when the wind is rushing pas your ears. The wind creates small turbulence that resonates in your ear as sound.

The setup as shown on the illustration on the side is made of elements placed much like the ears on one’s head. These elements blocks the wind and create turbulence as show in the detail illustration below (fig.2). The setups´ elements are repeated and have the same function. The orientation and amount of these are more complex as the wind flow can be caught (see fig.1 below) at any given direction, thus always being able to create those sound effects when the wind blows.

fig.1 fig.2

fig.3

The setup as shown above (fig.3), is made so that it can be wrapped completely by wind; from the top, the sides as well as from below. By surrounding itself completely by the wind it increases the sound effect inside the setup. This will give an experience of being in a protected structure that is itself completely exposed to the wind. The shape of the top and bottom elements could help increase this effect, in the same way as the side elements are increasing the wind sounds.

a) b)

 

Dowel joints(a) and box joints(b) could both be possible ways to joint the elements in the setup together. see link http://jawoodworking.com/joinery-techniques/

Day7 (10.02.2011)

 

Today the assignment was to use eight elements and with a goal in mind create a setup. These setups where to be tested in two different wind directions. My goal today was to create a shelter were people could take refuge and experience the wind flowing past at a high-speed but physically being isolated from the wind.

For a structure to be really isolated you normally use one surface that surrounds a whole structure. In these setups I also wanted to see what happens inside of the structure. Does the air get in through the elements?

1.Top view

wind from the right                wind from the left

2.Side view

wind from the right                wind from the left

1. For both setups the smoke is pushed to either side of the eight elements. Turbulence occurs as the gaps in the setup lets some air in between the elements. This turbulence is increased in the back as the wind passes the different elements. This turbulence is less heavy when the wind comes from the right side. This could be due to the shape of the frontal element being more triangular and pushing the wind more around the setup

2. From this perspective we can see that the smoke is pushed over and around either sides of the setup. Some of the air above the elements ducks down between the eight elements, how much is unclear. Turbulence starts on top of the elements and stays in the back. The airflow doesn’t really change, it’s fairly similar in both directions. It would be interesting to test this setup with a roof to see if that could keep the air.

This goal meant that I had to first find out if it was possible to have an entrance and have an isolated shelter if the wind is blowing  towards the opening. Could the wind somehow be redirected over the entrance and not reach the inside of the shelter?

3.Top view

wind from the right                   wind from the left

4.Side view                     wind from the right                wind from the left

3. For both setups the smoke is pushed to either side of the eight elements. Turbulence occurs   in the back as the wind passes the different elements. It is unclear if the air reaches the inside of the setups by going through the sides or the entrance. A plastic roof could have helped with registration of the results; to see was happening between the elements.

4. Here the smoke is pushed over the setup and to either side in both wind directions. This result shows that the opening does not necessarily let air into a setup if it has the right shape. The Turbulence that occurs in the back is unclear. A more smooth and homogeneous roof could possible decrease that turbulence.



Day 6 – Phase 2 / Composition (09.02.2011)

Key words for this phase

 

  • Airflow
  • Orientation
  • Spatial composition
  • Material composition
  • Joints

In this phase the setup is now composed of:

  • A homemade wind tunnel
  • Smoke machine
  • Camera
  • Black grid paper
  • Cardboard

Two setups are made on the basis of the work done in the previous phase. I choose to look at overlapping elements placed at different angles, in different orientation. The setups are tested in two different wind directions.

First setup wind from the right

The smoke coming from the right is blown directly on the first wall and is almost symmetrically pushed to either side. The smoke runs along the elements on the left side trying most directly to reach the other side of the setup. The smoke closest to the elements gets a bit sucked in to the gaps between the walls slowing it down.

First setup wind from the left

In this setup the smoke is channeled more directly to the left as the walls set an angle guide the smoke left and back. For this registration it was difficult to see happened in the red demarcation as the smoke lines just seemed to stop into “a cloud”.

Second setup wind from the right

In this second setup the smoke goes symmetrically on either side of the wall setup. As shown on the diagram (the red demarcation)  there is some smoke that reaches the inside of the setup. However it is not clearly from the picture where exactly the smoke is coming in. This penetration can be due to the gabs between the walls or some movement that could only be registered with a picture from the side.

Second setup wind from the left

The smoke in this setup flows in the setup and there occurs some unclear turbulence (the red demarcation) as some of the smoke is pushed back and some is pushed through the openings in the back. The rest of the smoke flows past to the other side.

The key element of these two setups is the orientation of the single walls in the setups. This could be test more precisely I have a goal I needs to be reach. It would be also be interesting to test a more closed setup, to start using the walls to create an indoor space. The registration of these setups could have been made easier with a side view of the setup and maybe a film to flow the smoke streams.



Day 5 (08.02.2011)

PIN-UP Phase 1 / Elements and Dynamics

Above is a picture of the poster on this weeks work brought to the pin-up. The following comments are notes taken during the pin-up. These notes will be taken into consideration for the phases.

Key words for this phase

  • Airflow
  • Speed
  • Orientation
  • Arrangement

Understanding the context of the experiment

  • Look at air as a mass.
  • Everything has an influence on the experiments also the air outside of the box setup.
  • Use a small flag to check the wind direction
  • Try to minimize the outside effects by i.e. placing the walls in the center of the setup

What do the different elements of a setup do?

  • Use a shape that is known and is easy to understand to make it easier to understand the complex effects of the different elements (i.e. Lisa and Henry´s “how to make a man”)
  • If the wind does not reach an element it can be seen as an element creating a protected space.

Interesting effects

  • ventilation
  • Turbulence
  • Laminar wind flow

Diagrams and registration of results

  • Not the direction of the wind
  • Photoshop: show what is important to show
  • Make it fast to understand and read
  • Show the context
  • Make précis illustration that show all of what you want to right about

Day 4 (07.02.2011)

Here are todays experiments and observations

1. In this experiment the back wall does not have an influence on the setup. Therefore it acts in a similar way to in the second setup on the third day; the air is channelled through the centre. However the turbulence does not occur in the same way, this may be due to the difference in distance between the walls.

2. The air is channel through the centre again and is divided in tree directions in the back.

3. The air runs alongside the first wall placed across from the drier. The salt is then removed from the right side of the back wall (this asymmetry could be due to an error in the setup). And after that the air runs along the three back walls as the front wall barely acts as a wind breaker.

4. The air runs towards the centre and as well as to the opposite sides of either frontal walls. The air also reaches left side of the back wall but not the right this could be due to an error in the setup as the left side might have been more exposed to the wind.

In these different setups the walls have three different orientations; perpendicular, parallel and 45 degrees to the wind direction. The perpendicular walls have a back side that is more protected from the wind. The parallel wall divides the wind on either side. The 45 degree walls direct the wind and could be later be an interesting element to direct the wind a specific way maybe by also testing different angles.

Day 3 (04.02.2011)

Hairdryer experiment

Here different distances between the drier and the wall are tested. This will enable me to make more précis registration of the results in front of the wall like in day 1. (The distance from the wall to the edge of the setup is 16cm and remains unchanged during the experiments).

The distance chosen is 36 cm as the dryer cannot blow the salt completely away and the results around the wall are satisfying and easy to registers.

Today I have one more piece of card board which allows me to try some of the same setups as yesterday but with an extra dimension to it. These four experiments where then made into the diagrams below.

1. 2.

3. 4.

  1. The air forms small wind tunnels between the walls as it is channel from wall to wall.
  2. The air from the dryer is channel to the centre in the front of the setup. As the wind from the back and front joins each other the salt between gets blown away due to the air from the front being stronger.  Turbulence occurs on the back of both frontal walls.
  3. The air from the dryer is pushed to either side of the frontal wall. As the air leaves the wall at angle of ~45 degrees (as seen in previous experiments) it is received on the left side by a wall placed at an angle of almost 45 degrees. This channels the wind more strongly to the left side.
  4. Here the air is channelled to the left side as the frontal wall is placed 45 degrees across from the dryer. The wall on the left side helps the air backward. Some of the air does not get channelled between the two walls but goes directly left. Due to an unknown reason there is some wind reaching the back right wall as well.

From those experiments I chose to make additional experiments from the first setup. I took two variables; the overlapping value and the distance between the walls (as drawn in day2). This was to see how the wind would be directed in the different setups. The end results were measured after 25sec and then assembled in the table.

When you compare the results it is clear that with an overlapping value of 1cm and a distance of 1,5 cm between the walls, the wind channels itself the most. The front wall´s right side is less affected by the wind as it is too far from the dryers direct hit. The back wall does not directly participate in channelling the wind as the distance of 5,5cm between the walls is too great. As the middle wall is placed across from the dryer it for the most setups the most exposed to the wind. However as the overlapping value increased the middle wall is less exposed to the wind and the front wall over takes the direct wind from the dryer. The distance between the walls also decrease the channelling of the wind between the walls.

This channelling, controlling of the wind with several elements could later be used to compose texture of a larger and more complex facade. And I could pursue this by changing variables such as the origin of the wind and change in the angles of the different elements.

Day 2 (03.02.2011)

New day – New hairdryer and one more piece of cardboard

Due to a change in the setup, my results in today´s experiments were, as shown on the illustration below, hard to compare with yesterday´s work. The new hairdryer was more powerful thus blowing the salt between itself and the cardboard piece away. This made it hard to see in today´s result, what happened to the salt in front of the cardboard. By placing the hairdryer at a suitable distance to the cardboard piece, this error can be avoided tomorrow.

Yesterday

Today

 

These next illustrations show the four experiments of today (click to see the gif animations below).

Setup1 Setup2 Setup3 Setup4

Two pieces of cardboard were placed in the setup and as the salt was blown away it interacted with the pieces in different ways. The most interesting results were achieved with the second setup as the salt interacted with both pieces very distinctly. Future experiments could be investigating the changes in reaction, when two variable as shown on the illustration below are tested.

Day 1 – Phase 1 / Elements and Dynamics (02.02.2011)

Setup for this week’s experiments

    
  • Cardboard
  • Grid paper
  • Camera
  • Camera “tripod”
  • Salt
  • Hairdryer
  • First setup

    One small piece of cardboard is placed perpendicularly to the hairdryer.

    Then the hairdryer blows the salt against the cardboard and we see what happens.

    This is what I imagined would happen, before I had done the experiment.

    The salt would directly be pushed against the cardboard and the rest would go to the sides.

    This is what actually happened 🙂

    Cool diagram showing the time lapse.

    As shown on the illustrations above, the salt was blown symmetrically with an angle of ~45degres to each side. The air was pressed on the cardboard and had to escape on the sides. In conflict with what I had imagined, all the salt on the wind side of the cardboard had all been blown away. However some of the air had rebounded on the cardboard towards the hairdryer and this had made a pile of salt between the two objects. The symmetry is not perfect; the left side is more dominant due to possible errors in the setup.

    For part two to four, the experiments have been similar, but the cardboard has been moved in different ways giving very different results.

    Second setup

    The asymmetry in the diagram shows that the left side was more directly exposed to the hairdryer and the salt was blown with an angle of ~45degree from the side. The air on the right side however had a longer run along the cardboard and the salt was blown at smaller angle and at a shorter length.

    Third setup

    The cardboard piece was only 5mm thick, but was already working as a wind breaker pushing the air on the sides. In this experiment the right side was clearly more exposed to the drier, which moved the salt more dominantly backwards. This was again due to an error in the setup as the cardboard should have been directly across from the drier. The salt being blown backwards forms a line after leaving the board as the air from both sides is almost equal, thus not being able to blow the salt away.

    Fourth setup

    In the beginning the salt was blown symmetrically to either side. The left side was more exposed to the dryer, which blew the salt very dominantly away. The salt on the right side stopped blowing away after a few seconds.

    

     


     

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