Hele-Shaw Experimental Group Lucas Lamb Andrea 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 -> > > 2000 g Cell spacing: > > 0.83 mm Newtonian -> Non-Newtonian, then process repeated

date trial number number of spacers width of spacers (mm)Mass (g) volume inside syringe (mL)time (s) Flow Rate (mL/min) 3/25/ *15.7 * 3/25/ *22.5 * 3/25/ *22.5 * 3/25/ *34.3 * 3/30/ *37.9 * 3/30/ *32.7 * 3/30/ *14.1 * 3/30/ *24 * 3/30/ *32.7 * 3/30/ *9 * 4/1/ *36 * 4/1/ *40 * 4/1/ *5.4 * 5/4/ /4/ /4/ Newtonian Trials

date trial number number of spacers width of spacers (mm )Mass (g) volume inside syringe (mL) time (s) * Flow Rate * (mL/min) 4/1/ /6/ /6/ /6/ /6/ /6/ /6/ /13/ /13/ /13/ /13/ /13/ /20/ /20/ /20/ 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