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Foundations for Offshore Wind Towers. Marissa Blakley YES Prep Public Schools – Houston, Texas Dr. Giovanna Biscontin & Dr. Charles Aubeny Department of Civil Engineering. The Research Problem.

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foundations for offshore wind towers

Foundations for Offshore Wind Towers

Marissa Blakley

YES Prep Public Schools – Houston, Texas

Dr. Giovanna Biscontin & Dr. Charles Aubeny

Department of Civil Engineering

the research problem
The Research Problem
  • The strong lateral forces present at sea cause wind turbines to vibrate, or rock back and forth.
  • These vibrations cause the soil at the bottom of the ocean to weaken, creating a vertical angle between the pile and ocean floor.
  • If this angle exceeds 5o, the wind turbine stops producing energy.

Texas A&M University, Department of Civil Engineering

my research experience
My Research Experience
  • In order to measure the strength of the soil, the research team conducted T-bar and Mini Shear Vane tests using soil mined and shipped from Florida.
  • Teachers were responsible for mixing powdered clay and water to a predetermined water content of 55%, and determining the soil strength by running each of the tests.
  • Data was collected using the T-bar, Mini Shear Vane, Basic DAQ and Smart Motor Interface computer software.
  • The T-bar test recorded voltages and then multiplied by the calibration factor giving force, which is an indicator of soil strength.
  • The Mini Shear Vane test recorded voltages and multiplied by the calibration factor giving torque.
  • With these different methods of collecting data, we were able to improve our understanding of the soil mechanics in the ocean.
unit 5 sinusoidal functions
Unit 5- Sinusoidal Functions
  • Enduring Understandings
    • Using the Unit Circle and right triangle trigonometry, we can generate the graphs for the sinusoidal functions y = sin(x) and y = cos(x).
    • Sinusoidal functions can be used to model real world applications – the rise and fall of tides, pendulum motion, the movement of weights supported by springs, etc.
    • All previous transformations of functions can be applied to sinusoidal functions.
  • Essential Questions
    • How does understanding the unit circle, lead to the construction of the graphs of and ?
    • What types of real-world problems can be modeled and solved using trigonometry?
    • How are graphic representations of the trigonometric functions useful in understanding real-life phenomena?
key words
Key Words
  • Amplitude
  • Period
  • Midline
  • Periodic Function
  • Periodic Phenomena
  • Sinusoidal Function
  • Sinusoidal Regression
  • Geotechnical Engineering
  • Wind Turbine
  • Monopile
  • Blades
  • Low-g Accelerometer
  • Energy Diversification
day 1 quickwrite

ENGAGE.

Day 1 - Quickwrite

What is engineering to you? Based on your prior experiences, what do you think an engineer does?

day 1 class discussion

ENGAGE.

Day 1 – Class Discussion

What are the different kinds of engineering?

  • Aerospace
  • Agricultural
  • Biological
  • Biomedical
  • Chemical
  • Civil
  • Computer Science
  • Electrical
  • Engineering Technology
  • Industrial Distribution
  • Industrial & Systems
  • Mechanical
  • Nuclear
  • Petroleum
day 1 types of civil engineering

EXPLORE.

Day 1- Types of Civil Engineering
  • Coastal
  • Ocean
  • Construction
  • Environmental
  • Geotechnical
  • Materials
  • Structural
  • Transportation
  • Water Resources

http://en.wikipedia.org/wiki/Geotechnical_engineering

day 1 the wind turbine project

EXPLAIN.

Day 1- The Wind Turbine Project
  • The Task
    • In teams of four, design an offshore wind turbine with budget and specification guidelines that will perform under sea-like conditions.
day 1 the wind turbine project1

EXPLAIN.

Day 1- The Wind Turbine Project
  • The Model
    • Create a subsurface structure that will attach to a wind tower no larger than 18 vertical inches with attached blades.
day 1 the wind turbine project2

EXPLAIN.

Day 1- The Wind Turbine Project
  • The Budget
    • All models must be completed using the provided materials, and each group must remain at or under their project budget–60 Eddy bucks.
day 1 the wind turbine project3

EXPLAIN.

Day 1- The Wind Turbine Project
  • The Materials
    • Sheets of plastic
    • Wooden dowels
    • Popsicle sticks
    • Toothpicks
    • Pipe Cleaners
    • Glue Stick
    • Straws
    • Sheets of cardstock
    • Rubber bands
    • Pushpins
    • Large paper clips
    • Small paper clips
    • Brads
    • Sheets of foam
    • Paint sticks
    • Duct tape
    • Scissors

$6/sheet $2 each

$3 each $1 each

$2 each $0.50 each

$0.10 each $4 each

$2 each $2/sq. in.

$5 each $3each

$1 each $0.50/6 inch piece

$1 each

$2 each

$2/sheet

day 2 the engineering design process

ELABORATE.

Day 2- The Engineering Design Process

Mr. Tim Chinn, Texas A&M University

day 2 the wind turbine project1

ELABORATE.

Day 2- The Wind Turbine Project
  • The Tests
    • Each team’s model will be tested in two ways:
      • How much does the structure vibrate when put under wind conditions?
      • How much weight can be applied before each structure fails?

Vernier.com

day 2 improving designs

ELABORATE.

Day 2- Improving Designs
  • The majority of Day 2 will be spent in the design phase of the engineering design process.
  • Each team will be provided with a bucket full of the soil mixture (75% water content) to test their creations.
  • As they work on their models, teams will be allowed to simulate testing conditions & improve their designs.
day 3 testing data collection

EVALUATE.

Day 3- Testing & Data Collection

Test 1: How much does the structure vibrate when put under wind-like conditions?

Test 2: How much weight can be applied before each structure fails?

sample pre test post test questions
Sample Pre-Test & Post-Test Questions
  • Over the course of one day, a team of scientists has recorded the ground temperature, measured in oF, as a function of the time t, measured in hours since midnight. The scientists have agreed that this data is periodic and can be properly modeled using a sinusoidal function.

Based on this model, which of the following statements is true?

I. The maximum temperature in the desert occurs before 2:00 p.m.

II. Between midnight and 6:00 a.m., the temperature remains below 76oF

III. The temperature in the desert is decreasing between 3:00 a.m. and 4:00 a.m.

A. I only

D. II and III only.

B. II only

E. I, II and III

C. I and III only

special thanks
Special Thanks
  • Dr. Giovanna Biscontin
  • Dr. Charles Aubeny
  • Ryan Beemer
  • MadahuriMurali
  • Francisco Grajales
  • Michelle Bernhardt
  • Silvia Vital
  • E3 Team