PRESENTATIONS ME4331 Terry Simon THERMAL SCIENCE LABORATORY

1
PRESENTATIONSME4331 Terry SimonTHERMAL SCIENCE
LABORATORY
April 13, 2006
2

• OUTLINE
• INTRODUCTION
• PURPOSE OF YOUR PRESENTATION
• OBJECTIVES OF THE WORK TO BE
• PRESENTED
• MAIN OBSERVATIONS A SUMMARY
• DELIVERING YOUR MESSAGE
• OBJECTIVES
• PROCEDURE AND FACILITY
• RESULTS
• CONCLUSIONS
• SUMMARY AND RECOMMENDATIONS

3

• INTRODUCTION
• PURPOSE OF YOUR PRESENTATION
• Remember, you are only introducing at this point.
  This will be short, but important.
• Consider your audience. What are their
  interests? Target your presentation to them.
• OBJECTIVES OF THE WORK TO BE PRESENTED
• Remember, in the body you will discuss how you
  met the objectives, or you will comment on how
  continuation work might meet them.
• Relate the objectives to the audience. What will
  they want to learn?
• MAIN OBSERVATIONS A SUMMARY
• The essence of what you learned. A teaser to get
  them interested and attentive to listen for the
  details.

4

• DELIVERING YOUR MESSAGE
• OBJECTIVES
• PROCEDURE AND FACILITY
• Identify cases studied parameters varied.
• Show a picture or schematic (whichever is
• more clear to understand at a glance).
• Discuss measurement methods and instrumentation.
  Show a picture or a schematic (whichever is more
  clear) if needed.
• RESULTS
• Give the most important results, dont dilute
  with minor results.
• Give enough description that all understand how
  you arrived at these results.
• CONCLUSIONS
• What are these results telling?
• What conclusions can be drawn from them.?

5

• SUMMARY AND RECOMMENDATIONS
• Repeat the highlights of the presentation. Tell
  them what you just told them.
• Your objectives.
• How you approached the question.
• What was done
• What was concluded.
• Here is where your main results (only a few main
  ones) are clearly presented.
• There will undoubtedly be unfinished business or
  reflections on how the work may be extended.
  Address it here. This should not be a dominant
  part of this section a presentation of the most
  important results is the most important part.

6

• OTHER POINTS TO KEEP IN MIND
• Reference the work and contributions of others.
• Reduce the number of main points per slide to a
  few, no more than five or six. You may want to
  step through them.
• Stay within your allotted time. The audience
  will accept a presentation that is a bit too
  short, but is not very tolerant of one that is
  too long.
• Say, This is important to me and I want it to be
  important to you! by
• Looking at the audience.
• Speaking to the audience slowly, distinctly,
  with appropriate volume and with enthusiasm.
• Dressing appropriately.
• Avoiding slang and casual language.

7

• MORE POINTS TO KEEP IN MIND
• Move a bit. Dont be a statue, but dont be too
  busy either. Use hand gestures, but not
  excessively. Keep your hands out of your pockets
  and dont fiddle with whatever you may be
  holding.
• Use crib sheets if you must. Though, with
  practice, you should not need them except for
  some details you wish to be sure to get right.
• Decide ahead of time how you will note various
  points on the visuals rigid pointer, light
  pointer, mouse pointer, etc.
• Figure out ahead of time what questions may be
  asked, and prepare responses.

8

• AND, MOST IMPORTANTLY
• PRACTICE
• PRACTICE,
• PRACTICE

9

• Some example slides.

10
Stirling Engine Aerothermal Experiments
Time
DOE
Temperature
Unsteady temperature measurements within the
regenerator
Radial Location
Computation and visualization of unsteady flows
within the engine expansion space,
NASA
Bulk flow
11
High Temperature and Plasma Laboratory

• Selected Current Projects
• Arc plasma instabilities and plasma generator
  control
• plasma jet shear layer
  instability diagnostics and control
  - experimental
  investigation of fluid dynamic interaction
  between plasma jet, cold gas
• arc-anode attachment instability
• - effect of cold gas
  boundary layer
• - 3-D time dependent
  model of plasma fluid dynamics
• plasma cutting torch
  optimization - cathode erosion studies
• - nozzle design
  effectiveness through spectroscopy

12
Cutting Torch Cathode Erosion High Speed
Observation, 200 A arc in O2, Hf cathode
Nozzle with Sapphire Window
Lens System
High Speed Video Camera
13
Anode Boundary Layer Modeling
Temperature and velocity distributions and
Comparison with photo
14
Atmospheric Aerosol Research

• Instrumentation Development
• novel measurements
• commercialization
• Laboratory Research
• Atmospheric Research
• multidisciplinary field studies
• radiative transfer
• nucleation
• gas-to-particle formation

15
Engine and particle research in Center for
Diesel Research

• Real world and laboratory emission measurements
• Sensors
• Renewable fuels
• Fundamental studies

Microengine
16
Advanced Space Power Source Stirling Convertor
Regenerator Microfabrication
Concepts
Honeycomb
NASA Space Power Initiative
Lenticular
Involute Foil

• Goals
• Microfabricate new Stirling convertor regenerator
• Precisely defined geometrical features that can
  be refined to enhance radial heat transfer
  reduce axial heat transfer DP
• Improve the performance of the Stirling engine

• Technical Challenges
• Identify right concept fab technique
• Fabricate the regenerator with microfab
  techniques
• Address life reliability, in addition to
  performance

17
Dynamics Control of Low-Density Jets Low
density jets are inherently unstable, leading to
considerable mixing between the primary jet fluid
and surrounding ambient fluid. Control strategies
are being developed to exploit the stability
characteristics of these flows.
Shear Flow Control Laboratory
Combustion using JP-10 Jet Fuel Research is being
carried out to better understand the turbulent
flame characteristics in a backward-facing dump
combustor proposed for use in a scramjet engine.
Lean premixed-prevaporized JP-10 jet fuel is
introduced upstream of the step and burned
downstream of the step producing a bright blue
flame. In the absence of control the flame is
highly unstable, producing strong oscillations.
Counterflow is applied at the trailing edge of
the step to disrupt the periodic motion, leading
to a stable flame located in the lower portion of
the combustion chamber.
Schlieren Image
Schematic
PIV Image
Stable combustion using counterflow heat
release 100 kW
18
Polymer Heat Exchangers NSF, DOE-NREL
Goals
Develop heat exchangers for charge-air coolers
and radiators Develop collectors heat
exchangers for solar water heating
Woven Tubes
Shaped Tubes
Theoretical and experimental studies of unique
tubular geometries for enhanced heat transfer
19
Micro-channels Flow boiling forced convection
Transient temperature response of a micro-channel
plate