P16371: Controlled Oscillating Meniscus Test Fixture
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Gate Reviews

Table of Contents

The Deliverable of P16371 MSD Team

It's expected that this MSD team designs and constructs a device that is capable of meeting the customer requirements as outlined in the problem definition. Specifically, this means that the device must create a stable liquid meniscus, oscillate the meniscus at a frequency of approximately 100 Hz, be capable of utilizing multiple different working fluids, be able to interface with the other subsystems, and it must be reliable. In order to fulfill the customer requirements, it's also expected that the MSD team designs a computer program that allows for adequate control of the device. Therefore, upon completion of MSD II the customer will receive a device that meets his requirements along with a program that is capable of supplying the necessary controls. It's the customer's desire that the device which is being designed and constructed by this MSD team will enable him to conduct his doctoral research.

A Great Video

Click here to watch a video of an oscillating meniscus.

Team Vision for Final Demo and Customer Handoff Phase

Anticipated Tasks

For the final demo and customer handoff phase, our team expected to accomplish the following tasks:

Accomplished Tasks

The following tasks were actually accomplished during the final demo and customer handoff phase:

Imagine RIT

Imagine RIT Project Description

Dancing Bubbles Used to Study Boiling Systems

Have you ever seen water dance to Taylor Swift? Or rock out to Crazy Train? Visit our exhibit to see what we’re talking about and have fun blowing some bubbles. Our amazing senior design team will ‘boil down’ our Multidisciplinary Senior Design project and leave you feeling ‘cool.’ Boiling systems, such as a boiling pot of water, are incredibly effective at removing vast amounts of heat from a surface. For example, bubbles dissipate heat from the bottom of the pot of boiling water via bubble nucleation. However, boiling is a complex and chaotic phenomenon, and the fundamental physics are not well understood. If a greater understanding of bubble nucleation can be acquired, then more efficient designs for applications such as jet engines, computer chips, and nuclear plants can be developed. For this reason, the RIT Thermal Analysis, Microfluidics, and Fuel Cell Laboratory has proposed a system that is capable of studying the basic fundamentals of boiling. Our Multidisciplinary Senior Design team was tasked with designing and fabricating a device that is capable of conducting such an investigation. In order to study boiling fundamentals, our device was required to create a stable liquid meniscus, control the liquid volume of the meniscus under varying heating scenarios, and oscillate the meniscus over a range of frequencies. It’s anticipated that our device can be utilized by the RIT Thermal Analysis, Microfluidics, and Fuel Cell Laboratory in order to gather a more robust comprehension of bubble nucleation and enhance heat dissipation in a broad range of applications.

A PDF of the Imagine RIT project description can be opened by clicking here.

Imagine RIT Poster

An editable version of the Imagine RIT poster can be opened via Microsoft PowerPoint by clicking here.

Image of the final Imagine RIT poster.

Image of the final Imagine RIT poster.

Imagine RIT Schedule

Time assignment Name
10:00am - 11:30am Joe
11:30am - 1:00pm Alyssa
1:00pm - 2:30pm Rob
2:30pm - 4:00pm Charles
4:00pm - 5:00pm Pruthvik

Performance vs. Requirements

Customer Requirements

Customer requirements.

Customer requirements.

An Excel Worksheet containing the customer requirements can be accessed by clicking here.

Engineering Requirements

Engineering requirements.

Engineering requirements.

An Excel Worksheet containing the engineering requirements can be accessed by clicking here.

Performance vs. Requirements - CRs

Customer requirements and performance.

Customer requirements and performance.

An Excel Workbook containing the performance vs requirements information shown above can be accessed by clicking here.

Performance vs. Requirements - ERs

Engineering requirements and performance.

Engineering requirements and performance.

An Excel Workbook containing the performance vs requirements information shown above can be accessed by clicking here.

PID Controls in LabVIEW

During the past three weeks, tremendous progress has been made with the PID control in LabVIEW. It is operational and functions as expected with the capacitance circuit. However, the PID still needs to be tuned. After speaking with an expert in the subject matter, it was learned that tuning a PID control such as the one used in our system is just a guess-and-check procedure. The images shown below are the updated LabVIEW block diagrams for the capacitance sensor and PID control.
LabVIEW block diagram.

LabVIEW block diagram.

LabVIEW block diagram.

LabVIEW block diagram.

System Operating Instructions

The instructions shown below are a draft of the operating instructions for the system. A finalized version, with much more detail, is currently in progress and will be completed shortly. Click here for the Microsoft Word document with the current instructions.
Current operating instructions. The finalized version is in progress.

Current operating instructions. The finalized version is in progress.

Gantt Chart

Over the past three weeks, only one deadline on the Gantt chart needed to be modified. The date for integrating and testing the LabVIEW PID controls has been extended to reflect the continuing improvements made to the PID controls.
Updated Gantt chart.

Updated Gantt chart.

ICNMM Paper

We are unable to publically share our paper, because it belongs to ASME. The paper is entitled "Design of an Experimental Setup to Investigate an Oscillating and Evaporating Meniscus Using a Feedback Control Loop."

Final Bill of Materials

In total, our team spent $1,290.67 out of our $5,000 budget. Therefore, there is plenty of remaining money in the budget for the customer to utilize for future improvements.
Item Price
2.5" round speaker from Jameco Electronics $6.09
6.5" round speaker from MCM Audio $33.68
6061 Aluminum round rods $249.37
Brake hose $15.97
Teflon PTFE 0.01" gasket material $17.76
Carbide turning inserts $33.75
Optics Focus Instruments lab stage $379.05
Arcus Technology stepper motor $305.00
Coating on aluminum speaker enclosure $250.00
TOTAL $1,290.67

Gate Review Materials

Item Link to document
Project readiness package Click here.
Team norms Click here.
Video Click here.
Imagine RIT poster Click here.
Performance vs. requirements Click here.
System operating instructions Click here.

Project Future Work

It's anticipated that the customer will continue to make future improvements to the system designed by the MSD team. Items for future work include the following:

Plans for Wrapping Up MSD II

In order to conclude MSD II, the following actions will be taken:

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