156A Week 10
Overview of Status of Analysis, Design, Fabrication, Tests, etc.
Assembling prototype for testing, waiting on latches to arrive before testing can begin
FEA analyses of thermal expansion, stress heatmaps, and heating times
Accomplishments from Previous Week
Theoretically determined pressure drops across each channel and various linking configurations using Extended Bernoulli plus head loss
Laser cut and machined acrylic to be used for prototype testing
Goals for Next Week (list names after each item). Use specific and measurable objectives.
Finish experimental testing to determine loss coefficients, pressure drops, and pressure coupling effects
Sponsor Comments from Last Meeting and Actions Taken to Address these Comments (indicate date of comments and if via email or in person)
In Person: Evaluate necessity for using 1/2" acrylic, can we go thinner?
Performed FEA analysis of acrylic, polycarbonate, and polypropylene in 1/4", 3/8", and 1/2" thicknesses to determine heating times and stress analyses
In Person: Consider effects of thermal expansion
Performed FEA analysis of acrylic, polycarbonate, and polypropylene in 1/4", 3/8", and 1/2" thicknesses to determine expansion due to heating
Instructor Comments from Last Meeting and Actions Taken to Address these Comments (indicate date of comments and if via email or in person)
In Person: Need easy to digest figures
Creation of plots in MATLAB detailing relationship between loss coefficient of fittings and tubing length to achieve desired pressure drop between channels
In Person: Theoretically and experimentally determine pressure coupling effects
Used Extended Bernoulli plus head loss to theoretically determine pressure drops
Comments from Other Students in the Class (indicate date of comments and if via email or in person)
none
Risks and Areas of Concern
Concerned parts will arrive too late to begin testing and have data by finals week presentation
Resources or Information Required but not Available
none
Schedule
Need to finish prototype assembly and begin testing to determine pressure drops experientally
Update Gantt chart.
Budget (list amount spent and amount remaining)
$24.91 on male to push-to-connect fittings
$33.62 on hardware
$14.05 on o-rings
Progress on Report and Webpage
Weekly updates for 156a weeks 9/10, home page