Overview of Status of Analysis, Design, Fabrication, Tests, etc.
Gas Distribution Experiment will be performed tomorrow (April 12) due to technical difficulties and scheduling
Did CFD of flow distribution from various nozzle shapes
3D printing of prototypes of nozzles and manifolds was a failed experiment(too brittle, parts broke when removing them from the plate, wax supports gummed up small holes)
Meeting with Bob, machinist from CRMS, on Thursday or Friday to discuss machining with carbon fiber PEEK
Bought the material today (4/10), should arrive by 4/13
Accomplishments from Previous Week
CFD analysis on three nozzle designs
Rectangular-converging nozzle
Converging-diverging nozzle
Cylindrical-sidecut nozzle
3D printed various nozzle and manifold designs
Settled on rectangular nozzle exit likely being the best, and working on C-shaped manifolds to surround the sample with gas
Goals for Next Week (list names after each item). Use specific and measurable objectives.
Rework CAD to be machinable instead of 3D printable, have 2 designs that will be ready to be machined - Edwin
Meet with Bob from CRMS (and Tom Chalfant or Ian Richardson) to go over machining options with carbon fiber PEEK - Layton
Do gas distribution experiment on the existing nozzle options provided by sponsor (carbon fiber and stainless steel in various diameters) - Dylan
Re-run CFD with more accurate boundary values after getting data (exit pressure, flow rate, etc) from experimentation - Kuanren
Sponsor Comments from Last Meeting and Actions Taken to Address these Comments (indicate date of comments and if via email or in person)
Last meeting was 4/10 in person, everything here is from that meeting
Ordered 30% carbon reinforced PEEK after 3D printing failed
CFD looks good, but boundary values are very rough estimates, we can re-run CFD after getting more accurate values from experiment
Need more CAD designs and ideas
Instructor Comments from Last Meeting and Actions Taken to Address these Comments (indicate date of comments and if via email or in person)
From in person weekly meeting on 4/4
CFD will be difficult to do accurately at small scales - Meeting with Dr. Friend on 4/11 to discuss how to do more complicated CFD to hopefully improve our solution
Manufacturing will be difficult - 3D printing was a failure, meeting with Bob from CRMS on 4/12 to discuss machining
Comments from Other Students in the Class (indicate date of comments and if via email or in person)
N/A
Risks and Areas of Concern
Manufacturing of parts is difficult due to the small scale of our design, 3D printing is basically useless
Still have limited time with scope, it was under maintenance on 4/10 when we wanted to use it
Resources or Information Required but not Available
Boundary conditions and flow rate in the vacuum chamber
Schedule
Finally finish gas distribution experiment with basic nozzles
Refine C - shaped manifold design so it can be machined
Update Gantt chart.
Budget (list amount spent and amount remaining)
30% Carbon reinforced PEEK sheet, 5 in x 5 in, ⅓ in thick - $ 200
3D printing parts, HD3510 - $ 20 out of $100
$4800 out of $5000 left
Progress on Report and Webpage
Design proposal Presentation was done
Webpage was updated with new added presentation slide
Early parts of the report will be written by the end of this week