Acoustic D oppler Solutions
Acoustic Doppler Current ProfilerAcoustic Doppler Current Profiler
Technology
Trevor Lykens, Tim Sisk, Chris Tomichek
December 20, 2005
Acoustic D oppler Solutions
Introduction to ADCP Technology
What is ADCP?What is ADCP? Acoustic Doppler Current Profiler Acoustic Doppler Current Profiler What does it measure?What does it measure? How does it measure?How does it measure?
Why use an ADCP?Why use an ADCP? Who uses ADCP’s?Who uses ADCP’s? How much does it cost?How much does it cost? Why did we use ADCP recently?Why did we use ADCP recently?
Acoustic D oppler Solutions
What is an ADCP?
AAcoustic coustic DDoppler oppler CCurrent urrent PProfilerrofiler
Works like the radar gun Works like the radar gun
Uses sound to make measurements …Uses sound to make measurements … SONAR (like RADAR in air)SONAR (like RADAR in air)
SOSOund und NANAvigation &vigation & RRanginganging
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What Does It Measure?
ADCPs measures 3F’sADCPs measures 3F’s1.1. How How ffast? … speed, velocityast? … speed, velocity2.2. HowHow ffar?… distance, range, depthar?… distance, range, depth3.3. HowHow ffull? … volumeull? … volume
WHILE MOVING!!!!WHILE MOVING!!!!
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ADCP
How Does It Measure?
Uses Beams to Measure Water in Motion
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Distance = 150 ft
Discharge / Velocity Measurement
0.2
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Acoustic D oppler Solutions
Moving Discharge / Velocity MeasurementMoving Discharge / Velocity Measurement Much faster than traditional means. Improves Much faster than traditional means. Improves
efficiency, saves money (one run <5 min)efficiency, saves money (one run <5 min) Highly accurate measurementsHighly accurate measurements Hundreds of readings made per passHundreds of readings made per pass
More measurements for peace of mind with More measurements for peace of mind with data qualitydata quality
Why Use an ADCP?
Acoustic D oppler Solutions
Who Uses ADCPs?
USGSUSGS Army Corps of Army Corps of
EngineersEngineers State/Federal AgenciesState/Federal Agencies UniversitiesUniversities Irrigation DistrictsIrrigation Districts Defense ContractorsDefense Contractors ConsultantsConsultants
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ADCPs…
Can measure quickly from bridges or pulley Can measure quickly from bridges or pulley systemsystem Avoids pitfalls of user in the waterAvoids pitfalls of user in the water
No Maintenance costNo Maintenance cost Save time and money in maintaining the Save time and money in maintaining the
instrumentinstrument Lower overall costLower overall cost
Save time and moneySave time and money
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Applications Measuring DischargeMeasuring Discharge Wave studiesWave studies Sediment Transport Sediment Transport
StudiesStudies Scour and erosion Scour and erosion
studiesstudies Bathymetry MappingBathymetry Mapping IFIM StudiesIFIM Studies
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How Much Does It Cost?(RDI Instruments ADCP Cost Table Through CT Vendor)
Rio Grande:Rio Grande: Used in larger rivers and streams Used in larger rivers and streams
(1.5 ft – 225 ft).(1.5 ft – 225 ft).Typically mounted on boatTypically mounted on boat
Stream Pro:Stream Pro: Used in small streams and brooks Used in small streams and brooks
(3 in – 6.5 ft)(3 in – 6.5 ft)Comes with custom mountComes with custom mount
Sentinel:Sentinel:Used in canals and larger rivers Used in canals and larger rivers (Distance Varies) (Distance Varies)
Permanently mounts on bottom or sidePermanently mounts on bottom or side
Purchase PricePurchase Price Rental Rental per weekper week
$23,000 $23,000 $960 $960
$15,000$15,000 $600 $600
$19,000$19,000 $750 $750
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Rio Grande 1200kHz
Measures from 1.5-ft. to 60-ft.
Most versatile unit
Mounts to a boat or Trimaran
Software very easy to use
Very Accurate
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Rio Grande 600kHz
Measures from 3.5-ft. to 225-ft.
Mounts to a boat or Trimaran
Software very easy to use
Very Accurate
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Rio/Stream-Pro In Action
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ADCP: Stream-Pro Permits more effective Permits more effective
measurement methods in measurement methods in shallower depths of 4 in – 6.5 ftshallower depths of 4 in – 6.5 ft
Measures currents from top to Measures currents from top to bottom at the same instant – 2 in bottom at the same instant – 2 in resolution or even finer resolution or even finer
Bottom-tracking capability allows Bottom-tracking capability allows moving across stream moving across stream continuouslycontinuously
Safer: avoids operator in the Safer: avoids operator in the water water
Convenient: Convenient: wireless linkwireless link permits permits flexible operation from shore, flexible operation from shore, bridge, & cableway bridge, & cableway
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WinRiver Software
Setup WizardSetup Wizard
DepthDepth
Boat SpeedBoat Speed
Water SpeedWater Speed
Bottom TypeBottom Type
No Need to Memorize CommandsNo Need to Memorize Commands
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WinRiver User Interface Screen
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Creates Reports
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Our Recent Application
ConEd – West Springfield Station in Mass.ConEd – West Springfield Station in Mass. 10 Transects across the Connecticut River10 Transects across the Connecticut River
BathymetryBathymetry VelocitiesVelocities Total flowTotal flow
Rented Rio-Grande 1200 kHz unitRented Rio-Grande 1200 kHz unit Fabricated mount for our boatFabricated mount for our boat Laptop data collectionLaptop data collection
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Why Did We Use ADCP Technology?
Client required by NPDES permit to perform a Client required by NPDES permit to perform a thermal plume study of discharge effects at West thermal plume study of discharge effects at West Springfield Station Springfield Station
Efficient means to gather bathymetric, velocity, and Efficient means to gather bathymetric, velocity, and therefore flow datatherefore flow data
Relatively inexpensive (see cost table)Relatively inexpensive (see cost table)
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West Springfield Transects
• WSS Intake• Unit 1&2 Discharge• Unit 3 Discharge• Mouth of Mill River • Sewage effluent Discharge• Mouth of Westfield River
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Study Results Performed 10 transects in the CT River in <4 hrs Performed 10 transects in the CT River in <4 hrs Calculated cumulative flow in river was within ~5% at Calculated cumulative flow in river was within ~5% at
all transectsall transects Very rainy day with pulsing inflowsVery rainy day with pulsing inflows
Collected data is being incorporated into Thermal Collected data is being incorporated into Thermal Plume hydraulic modeling (John Richardson @ Blue Plume hydraulic modeling (John Richardson @ Blue Hill Hydraulics)Hill Hydraulics) Output was simple text fileOutput was simple text file
Also can have ASCII output filesAlso can have ASCII output files Create own output reports or graphs with Create own output reports or graphs with
WinRiverWinRiver The ADCP was very User-FriendlyThe ADCP was very User-Friendly
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ADCP Summary
ADCP Technology is accepted by academia, state and ADCP Technology is accepted by academia, state and federal agencies, etc.federal agencies, etc.
Relatively inexpensive and produces quality dataRelatively inexpensive and produces quality data Multiple ADCP models make the technology very Multiple ADCP models make the technology very
versatile (Resolution, Depth, etc.)versatile (Resolution, Depth, etc.) Very user-friendly software and tech supportVery user-friendly software and tech support
RDI has 24/7 Telephone SupportRDI has 24/7 Telephone Support RDI University (take classes on line for free)RDI University (take classes on line for free)
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Questions?
For more info contact Chris Tomichek, For more info contact Chris Tomichek,
Tim Sisk, or Trevor LykensTim Sisk, or Trevor Lykens
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