1. Strip Stave FEA Results at BNL/Yale BNL: David Lynn, Marc-Andre Pleier, Anatoli Gordeev, Russ Burns, Ken Sexton Yale: Paul Tipton, Will Emmet, Tom Hurteau

2. Finite Element Analyses at BNL & Yale Thermo-fluid and structural analyses Thermo-fluid: Blue Ridge Numerics CFDesign, SolidWorks Flow Simulation (aka Floworks) Structural: Solidworks Simulation (Cosmos/M solver) Three objectives: Measure HFE-7100 and H 2 O flow rates vs. pressure drop in stainless steel tubing and verify with hand-calculations & FEA (CFDesign, Floworks); Develop FEA model to verify 350 mm stavelet thermal measurements (see Dave Lynn’s talk for further details); For stavelet09-1, measure deflection vs. force for 3-point bending (simply-supported both ends, load applied at center); develop FEA model to verify results

3. Finite Element Analyses at BNL & Yale Measuring H 2 O flow rates: Simple experiment with N2 gas bottle & regulator, tank, valve, graduated cylinder, stopwatch and summer student. Tank is ~half-filled with water, regulator is set, valve is opened and when water appears at open end of tube, time is started. Graduated cylinder is mostly filled and time is stopped. Volume divided by time interval is average flow rate. Both straight and double 90 o bend (as in stavelet) sections were evaluated.

4. Finite Element Analyses at BNL & Yale Measured H 2 O flow rates: Delta P (kPa/psi) Delta Volume (Liter) Delta Time (seconds) Volumetric Flow Rate (cc/sec) Average Velocity (m/sec) 137.9/20.00.4630.115.82.9 206.8/30.00.4019.420.63.8 275.8/40.00.4217.024.74.6 379.2/55.00.3512.428.25.2 Delta P (kPa/psi) Delta Volume (Liter) Delta Time (seconds) Volumetric Flow Rate (cc/sec) Average Velocity (m/sec) 137.9/20.00.3019.915.12.8 206.8/30.00.3518.518.93.5 275.8/40.00.3415.022.34.1 379.2/55.00.3512.827.35.1 Straight tubing -2 meters U-tube -2 meters

5. Finite Element Analyses at BNL & Yale Measured versus calculated (Floworks) flowrates:

6. Water Flow Testing Conclusions Slight decrease in flowrate due to bending of tubing-this is expected; Close agreement between Floworks and measured values; Biggest difference is between measured and FEA bent-tube values, as much as ~10% at lowest flow rates.

7. Finite Element Analyses at BNL & Yale 350 mm Stavelet Measured & Calculated Flowrate vs Pressure Drop (3M HFE-7100 coolant):

8. Thermo-Fluid Finite Element Analyses at BNL & Yale- Conclusions 350 mm Stavelet Measured & Calculated Flowrate vs Pressure Drop (3M HFE-7100 coolant); Close agreement between Floworks, measured and calculated values; Continuing problems with CFDesign: Flow rates consistantly lower for given pressure drops than other analyses A. Gordeev & M. Pleier in contact with Blue Ridge Numerics BRN ran the same problem and increased mesh density in fluid (HFE- 7100) volume, obtained similar result Further communication with BRN to no avail! Hand calculations were based on the following: ∆P=f*(L/D h )*(ρV 2 /2) Where: f is a function of the inverse of the Reynolds number (laminar flow-Nr 4000)

9. Finite Element Analyses at BNL & Yale 3-point Deflection Measured vs. FEA for Stavelet09-1 (1 st BNL/Yale) SolidWorks Simulation FEA Stavelet Deflection at 200 Gram Loading

10. Finite Element Analyses at BNL & Yale 3-point Deflection Measured vs. FEA for Stavelet09-1 (1 st BNL/Yale)