Labs

Each lab group does three out of seven possible experiments in a semester. The experiments involve different branches of Mechanical Engineering knowledge, so we try to assign the students for maximum exposure to heat transfer, dynamics, thermo, fluid mechanics, etc. The image galleries below illustrate some of the equipment used in each of the experiments. All images are courtesy of OCW.

Experiment 1: Proximity Heating of Silicon Wafer (PDF) (Image Gallery)

Experiment 2: Transfer Line Dynamics (PDF) (Image Gallery)

Experiment 3: Heat Exchanger Tube Vibrations (PDF) (Image Gallery)

Experiment 4: Pipe Clearing Fluid Transients (PDF) (Image Gallery)

Experiment 5: Irradiation Sample Transfer Line Snubbing Section Behavior (PDF) (Image Gallery)

Experiment 6: Peak Pressure in Nuclear Containment Vessel (PDF) (Image Gallery)

Experiment 7: Irrigation System Pressure Surge (PDF) (Image Gallery)

The complete laboratory manual, containing all seven experiments listed above plus syllabus, calendar, and tools information, is available here: (PDF)


Lab Equipment

Each 2.672 experiment is installed on its own bench. Lab #6 is frontmost in the picture.

Each 2.672 experiment is installed on its own bench. Lab #6 is frontmost in the picture.

Lab 1: Proximity Heating of Silicon Wafer

Lab 1 apparatus: hot plate heater with silicon wafer (right), connected to a temperature probe (left).

Lab 1 apparatus: hot plate heater with silicon wafer (right), connected to a temperature probe (left).

 Hot plate with silicon wafer in initial configuration (before heating).

Hot plate with silicon wafer in initial configuration (before heating).

Hot plate with silicon wafer lowered to heating position.

Hot plate with silicon wafer lowered to heating position.

Lab 2: Transfer Line Dynamics

Lab 2 apparatus (left to right): computer instrumentation and data capture, storage tank, transfer line system connected to lab's pressurized air supply.

Lab 2 apparatus (left to right): computer for instrumentation and data capture, storage tank, transfer line system connected to lab's pressurized air supply.

 Detail of transfer line valve configuration.

Detail of transfer line valve configuration.

Bringing pressurized air into the system.

Bringing pressurized air into the system.

Before starting, purge the system of any pressurized water or air.

Before starting, purge the system of any pressurized water or air.

First, Valve B is opened.

First, Valve B is opened.

Then Valve A is opened, bringing water into the line.

Then Valve A is opened, bringing water into the line.

 

 

Lab 3: Heat Exchanger Tube Vibrations

Lab 3 apparatus: bucket for ice water to adjust pipe temperature (upper left), test pipe welded within black outer pipe.

Lab 3 apparatus: bucket for ice water to adjust pipe temperature (upper left), test pipe welded within black outer pipe.

 Detail view of sensor to measure the inner pipe's resonant frequency.

Detail view of sensor to measure the inner pipe's resonant frequency.

Lab 4: Pipe Clearing Fluid Transients

Lab 4 apparatus: computer for instrumentation and data capture, air storage tank, pipe with bend that collects water.

Lab 4 apparatus: computer for instrumentation and data capture, air storage tank, pipe with bend that collects water.

 Detail view of solenoid valve and water entry.

Detail view of solenoid valve and water entry.

Force exterted on the pipe is measured by an LVDT supported as a cantilever.

Force exterted on the pipe is measured by an LVDT supported as a cantilever.

Water is poured into the pipe before opening the solenoid.

Water is poured into the pipe before opening the solenoid.

Lab 5: Irradiation Sample Transfer Line Snubbing Section Behavior

Lab 5 apparatus: vertical transfer line, computer for instrumentation and data capture.

Lab 5 apparatus: vertical transfer line, computer for instrumentation and data capture.

 Detail view of light sensors at bottom of transfer line.

Detail view of light sensors at bottom of transfer line.

Samples to be irradiated would be packaged in a cylinder like this.

Samples to be irradiated would be packaged in a cylinder like this.

Filling the cylinder with lead shot to simulate a sample's weight.

Filling the cylinder with lead shot to simulate a sample's weight.

Dropping the sample into the transfer line.

Dropping the sample into the transfer line.

 

 

 

Lab 6: Peak Pressure in Nuclear Containment Vessel

Lab 6 apparatus: black tank as reactor vessel, pipes with valves to simulate breaks in the reactor vessel, red tank as simulated containment vessel.

Lab 6 apparatus: black tank as reactor vessel, pipes with valves to simulate breaks in the reactor vessel, red tank as simulated containment vessel.

Lab 7: Irrigation System Pressure Surge

The system contains three pipes in parallel, with different lengths of plastic tubing coiled up in the middle. Each pipe has a selection and terminal valve.

Lab 7 apparatus (right to left): valves for selecting different pipes, water supply control panel, lengths of pipe, valve with pressure gauge port.

 The large black water supply valve is opening. One of the pipe valves is already open.

To begin the experiment, open the water supply valve (black). Select the desired pipe by opening its valve.

The pipe reads 4 m length, 25.4 mm ID.

Each pipe is labeled with its length and inner diameter.

Small buttons read H2O inlet, H2O drain, Air Vent. The big red button is unlabeled.

The water supply control panel starts water flowing, and allows the system to be filled and drained.

One of the three valves is being closed quickly.

The terminal valve is initially open, then closed quickly to create a pressure surge.