Hele-Shaw Experimental Group Lucas Lamb Andrea Roeser Chen Shu.

Hele-Shaw Experimental Group

Lucas LambAndrea Roeser

Chen Shu

Set Up

Pour Glycerol or PEO

Procedure:

Clamp the plastic plates

Note the wax paper background and ruler

Insert needle

Place mass onto syringe

Record the whole process

Our Set Up

Parameters Varied

Volume of injected water remains constant (1.2 mL)

Mass: 500 -> 1000 -> 1500 -> 2000 gCell spacing: 0.32 -> 0.52 -> 0.83 mm

Newtonian -> Non-Newtonian, then process repeated

datetrial

numbernumber

of spacers

width of spacers (mm) Mass (g)

volume inside syringe

(mL) time (s)Flow Rate (mL/min)

3/25/2015 1 3 0.32 500 1.2 4.6 * 15.7 *3/25/2015 2 3 0.32 1000 1.2 3.2 * 22.5 *3/25/2015 3 3 0.32 1500 1.2 3.2 * 22.5 *3/25/2015 4 3 0.32 2000 1.2 2.1 * 34.3 *3/30/2015 1 3 0.32 2000 1.2 1.9 * 37.9 *3/30/2015 2 3 0.32 2000 1.2 2.2 * 32.7 *3/30/2015 3 5 0.52 500 1.2 5.1 * 14.1 *3/30/2015 4 5 0.52 1000 1.2 3 * 24 *3/30/2015 5 5 0.52 1500 1.2 2.2 * 32.7 *3/30/2015 6 5 0.52 200 1.2 8 * 9 *4/1/2015 1 5 0.52 1500 1.2 2 * 36 *4/1/2015 2 5 0.52 2000 1.2 1.8 * 40 *4/1/2015 3 5 0.52 200 1.2 13.3 * 5.4 *

5/4/2015 1 8 0.83 500 1.2 5 14.4

5/4/2015 2 8 0.83 1000 1.2 2.4 30

5/4/2015 3 8 0.83 1500 1.2 1.7 42.4

Newtonian Trials

datetrial

numbernumber

of spacers

width of spacers (mm) Mass (g)

volume inside syringe

(mL) time (s) *Flow Rate *

(mL/min)4/1/2015 5 3 0.32 1000 1.2 2.4 304/6/2015 1 3 0.32 500 1.2 2.9 24.84/6/2015 2 3 0.32 250 1.2 6 124/6/2015 3 3 0.32 750 1.2 2.5 28.84/6/2015 4 3 0.32 125 1.2 14.8 4.94/6/2015 5 3 0.32 250 1.2 6.3 11.44/6/2015 6 5 0.52 500 1.2 3.5 20.6

4/13/2015 1 5 0.52 250 1.2 24.8 2.94/13/2015 2 5 0.52 125 1.2 18.4 3.94/13/2015 3 5 0.52 750 1.2 3.1 23.24/13/2015 4 5 0.52 250 1.2 7.4 9.74/13/2015 5 8 0.83 125 1.2 20.2 3.64/20/2015 1 8 0.83 250 1.2 10 7.24/20/2015 2 8 0.83 500 1.2 4.8 154/20/2015 3 8 0.83 750 1.2 2.8 25.7

Non-Newtonian Trials

Experimental [Trial and] Error• Placing mass on syringe – slides off

• Air bubbles – in syringe or in cell

• Glycerol or PEO clog needle

• Possible tilt to cell – water leaks to one side

• Clamping of syringe – unnecessary forces

• Flow rates! iPhone’s slow motion affected video timing

Analysis- Varied Mass

Newtonian Fluid (glycerol)Cell Spacing 0.52mm

Mass (L to R): 200g, 500g, 1000g, 1500g

Analysis- Varied Spacing

Newtonian Fluid (glycerol)Mass: 500 g

Cell Spacing (L to R): 0.32mm, 0.52mm, 0.83mm

Analysis- Varied Spacing

Newtonian Fluid (glycerol)Mass: 1000 g

Cell Spacing (L to R): 0.32mm, 0.52mm, 0.83mm

Analysis- Varied Mass

Non-Newtonian Fluid (PEO)Cell Spacing: 0.52mm

Mass (L to R): 125g, 250g, 500g, 750g

Analysis- Varied Spacing

Non-Newtonian Fluid (PEO)Mass: 500 g

Cell Spacing: 0.32mm (left), 0.52mm (middle), 0.83mm (right)

THE END

Thank you Michael Lam