BSA Flow Software Installation and User's Guide - CSI

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DESIGNERS* .NET LabVIEW® MATLAB® Microsoft Excel© (VBA) Visual Basic JavaScript VisualBasic Script Visual Studio C++ Visual Studio .NET/C# Borland Delphi© Windows Script Host : : *All ActiveX or .NET compliant development environments Dantec.BSA.Driver ACTIVEX BSAProcessorCtrl CONFIGURATION LAYER Connect, SetConfiguration... PROPERTIES LAYER SetBandwidth, SetMaxSamples, SetProperties... ACQISITION LAYER StartAcq, onAcqDone... DATA LAYER ReadNumSamples, ReadVelocityData... BSASysMonCtrl BSA F- and P-series Processor The driver option can be used in a wide range of development environments, from programming languages like Visual Basic, C++, and C# to script languages like Visual Basic Script, JavaScript and VBA, together with 4th and 5th generation languages like LabVIEW®, MATLAB® etc. All ActiveX or .NET compliant development environments are supported. 6-104 BSA Flow Software: Options and Add-ons
7. Reference guide 7.1 Theory of Laser Anemometry 7.1.1 Summary 7.1.2 Background The development of continuous wave gas lasers has made it possible to use the Doppler effect in an optical non-intrusive method for measuring the velocity of gases, liquids and solids. The method is called Laser Doppler Anemometry or LDA, and this document provides some background information on the technique. Laser anemometers are non-contact optical instruments for the investigation of fluid flow structures in gases and liquids. The instruments owe their existence to the invention of the gas laser in the early sixties. Some earlier attempts to measure fluid velocities by optical methods had been made, but it was not until the advent of laser light with its unique properties of spatial and temporal coherence that it became possible to design an efficient optical anemometer. From the very beginning Dantec has participated actively in this exciting development, and today Dantec offers the most comprehensive line of commercial laser anemometer equipment available. 7.1.3 Characteristics of laser anemometry Laser anemometers offer unique advantages in comparison with other fluid flow instrumentation: • Non-contact optical measurement. Laser anemometers probe the flow with focused laser beams and can sense the velocity without disturbing the flow in the measuring volume. The only necessary conditions are a transparent medium with a suitable concentration of tracer particles (or seeding) and optical access to the flow through windows, or via a submerged optical probe. In the latter case the submerged probe will of course to some extent disturb the flow, but since the measurement take place some distance away from the probe itself, this disturbance can normally be ignored. • No calibration - no drift. The laser anemometer has a unique intrinsic response to fluid velocity - absolute linearity. The measurement is based on the stability and linearity of optical electromagnetic waves, which for most practical purposes can be considered unaffected by other physical parameters such as temperature and pressure. • Well-defined directional response. The quantity measured by the laser Doppler method is the projection of the velocity vector on the measuring direction defined by the optical system (a true cosine response).The angular response is thus unambiguously defined. BSA Flow Software:Reference guide 7-1
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BSA Flow Software Version 4.10 Inst
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1. General 1.1 Table of Contents 1.
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5.5 Optical Calibrated LDA System p
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7.2.1 Basic principles of phase Dop
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1.2 Dantec Dynamics Licence Agreeme
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1.3 Laser safety All equipment usin
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2. Introduction Congratulations wit
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2.1.9 Analog Monitor Option 2.1.10
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2.3.4 Trouble shooting 2.3.5 On-lin
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3. Installation 3.1 General 3.1.1 P
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Directory structure CPU usage will
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3.2.2 Installation as administrator
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You have the possibility to define
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Click Next and select the add-ons y
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Peer-to-peer connection Processor s
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Click on the Download tab to get th
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The BSA processor will restart. Thi
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• If the Game controller needs to
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Figure 3-2 National Instruments Mea
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3.7 Third party traverse system To
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4. The user interface 4.1 Layout Me
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4. If the mouse pointer was in the
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4.3 Project explorer shortcuts to t
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Figure 4-5 Dialog for adding object
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Using Templates To make a Template,
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4.6 The tool bar Figure 4-6 the pro
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Save As... Figure 4-10 the File men
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Figure 4-11 Save As compressed proj
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Figure 4-14 the Properties - Summar
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Figure 4-18 The Select Position dia
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Options With the Options you get a
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When Enable error logging is checke
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The fourth format, Significant Digi
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The PDA Optical Configuration objec
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4.7.7 Help menu Figure 4-34 The Hel
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4.9 Message window • by clicking
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PM and Bragg cell connections Warni
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LDA and PDA transmitting optics The
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Click on OK. Note For fully opaque
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In the third step, the software con
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Lightweight Traverse with handbox C
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57G15 Traverse interface Third part
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• right-click the Traverse Server
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4. This brings up the following dia
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To change a setting, click in the V
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Figure 4-39 System monitor in auto-
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14. You have now completed data acq
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4. Check the Show System Monitor wh
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. 8. LDA 1 properties are specific
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11. To monitor the Doppler signals,
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The axes will automatically rescale
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Click Acquire. If a complete new re
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Define the positions that you want
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Select the type of the files to ope
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5. Project explorer objects 5.1 Sta
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Browse to the file you wish to impo
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For each column, the data type must
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5.3.1 Output properties Figure 5-4
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Figure 5-7 The Custom… dialog und
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Figure 5-8 BSA F/P 30: processor pr
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Max. acquisition time: The maximum
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Normal user interface Advanced user
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Figure 5-11 The Bragg cell connecto
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LDA 1, 2, . properties: Range and g
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5.3.4 System monitor It frequently
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Scope: Burst spectrum display Recor
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Overlaid Graphs: used to show the b
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Uncheck the Use default bindings bo
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The calibration data are stored in
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5.6.1 PDA beam system The Beam syst
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Figure 5-24: Fringe direction setti
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5.6.4 Medium properties Medium name
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Software max. limit in mm.: Self ex
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The default address of the National
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Traverse coordinates of a datum poi
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5.7.8 Traverse Mesh generator If yo
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Regions Figure 5-39 Motion pattern,
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Warning Please observe strict secur
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5.9 Export Figure 5-40 Data-sources
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If multiple positions are exported
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5.9.3 Selected columns 5.9.4 Binary
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Data C Headers Programming Examples
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char filename[256] = {0}; strcpy(fi
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Range means that the filter will ap
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5.11.1 Data Properties Note that th
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Figure 5-54. Size histogram (left)
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Figure 5-57. Velocity distribution
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Figure 5-58 list output of 1D PDA d
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The next selection in the context m
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5.13.2 Objects under Merge object A
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N−1 Mean u ∑ ηiui = i= 0 N−1
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Cross-moments The property Cross-mo
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The calculation of ε fails if Umea
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Figure 5-71 General properties of t
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An alternative geometry of a 3D LDA
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Figure 5-75: FiberPDA phase plot. A
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5.16.3 Display properties The defau
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The output quantities of the diamet
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6. Options and Add-ons This chapter
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6.1 Advanced Graphics Add-on The ma
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Figure 6-2 The Tools-Options-Output
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Figure 6-5 Scale properties for 2D
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Property group ‘Display’ Also t
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6.1.3 2D Plot [m/s] 36 34 32 The 2D
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6.1.4 2D Histogram For off-line use
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Configuring the 2D Histogram The co
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Configuring the 3D Plot Figure 6-21
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Figure 6-23 “Interpolate bin” s
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Property group ‘Data’ Figure 6-
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Coordinate shown on Intercepts the
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LDA1-Mean [m/ s] -2,00 -3,00 -4,00
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Figure 6-32 Properties of the Vecto
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Figure 6-33 shows a velocity vector
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6.1.9 Exporting plots Copying a plo
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6.2 Synchronisation Option 6.2.1 In
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Pin Signal Pin Signal 1 Out 1 14 Gr
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6.2.5 Sync. Output Signals properti
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Outputs Figure 6-40 Differential sy
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Figure 6-42 Cyclic phenomena in the
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Cycle length The property Cycle len
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It allows to define the number of b
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Note It is not possible to have 0 a
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Figure 6-47: Output data from the c
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performed prior to phase sorting yo
Page 249 and 250: Figure 6-51 Properties of the spect
Page 251 and 252: Blocking Using the FFT-approach to
Page 253 and 254: 1,2 1,0 0,8 0,6 0,4 0,2 Weight fact
Page 255 and 256: Output from the Spectrum object The
Page 257 and 258: 6.4.2 Advanced Spectrum object Load
Page 259 and 260: To evaluate the new algorithm, comp
Page 261 and 262: 6.4.3 Correlation object Conclusion
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Page 265 and 266: Time The first column of the output
Page 267 and 268: The Protocol Figure 6-67: Generic t
Page 269 and 270: How to Use the Initialisation Strin
Page 271 and 272: Figure 6-69: Traverse File option i
Page 273 and 274: Properties Output from MATLAB engin
Page 275 and 276: Result window Script Hides and disp
Page 277 and 278: 6.6.2 Calculation object from to
Page 279 and 280: Tip To combine calculated data and
Page 281 and 282: max var. max of all arguments sum v
Page 283 and 284: 6.7.3 Software set-up Once A/D-hard
Page 285 and 286: Figure 6-76 BSA F/P application win
Page 287 and 288: 6.7.7 Analog input specifications J
Page 289 and 290: 6.8.1 Installation 6.8.2 Hardware c
Page 291 and 292: Figure 6-85 BSA F/P application win
Page 293 and 294: 6.9.1 Required hardware 6.9.2 Calib
Page 295 and 296: 2. Select Parameter Input 3. The fo
Page 297 and 298: B. Select Advanced Curve fitting an
Page 299: 6.10 Mobile system Monitor option T
Page 303 and 304: Doppler effect d0 R(z) Figure 7-1 L
Page 305 and 306: es e2 e1 U Figure 7-3 Scattering of
Page 307 and 308: Measuring volume proportional to pa
Page 309 and 310: Laser fI Beam splitter As indicated
Page 311 and 312: 7.1.6 Frequency shift • Reduce th
Page 313 and 314: As long as the particle velocity do
Page 315 and 316: 7.1.7 Signals The primary result of
Page 317 and 318: 7.1.8 Seeding Seeding as flow field
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Page 321 and 322: 7.2 Theory of Phase Doppler Anemome
Page 323 and 324: D is the particle diameter. βi is
Page 325 and 326: For reflection (Equation 7-16) The
Page 327 and 328: Figure 7-21: The effect of changing
Page 329 and 330: This is the principle of the spheri
Page 331 and 332: The trajectory effect The slit effe
Page 333 and 334: Figure 7-28:The DualPDA as a combin
Page 335 and 336: Figure 7-31: Reflection and refract
Page 337 and 338: Characteristic scattering angles At
Page 339 and 340: ⎛ ϕ ⎞ ϕ2 = 4arcsin⎜ ⎟ −
Page 341 and 342: Figure 7-36: The critical angle con
Page 343 and 344: Using side scatter (reflected light
Page 345 and 346: Mask Front Lens Eye-piece Spatial f
Page 347 and 348: Alignment of the eyepiece The focus
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For both orientations of polarizati
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Figure 7-46. The effect of changing
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Table of characteristic angles Defi
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n rel ϕ c1 ϕ b0 ϕ c2 ϕ b2 ϕ r2
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Choice of wavelength Choice of mask
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Choice of wavelength and focal leng
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Choice of polarization Choice of sc
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Focal length Transmitter (FiberFlow
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Polarization ring Fixing screw Push
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Aperture plates The particle size r
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Tighten the cable securely at each
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Disconnect the receiving fiber V1 f
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Step by step procedure Phase-Dopple
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Lower half: The lower half of the b
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Recommended acceptance angles of th
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7.7.4 Air bubble in freon Character
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7.7.6 Bubble of air in diesel oil C
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7.7.8 Glass sphere in water Charact
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7.7.10 Latex sphere in water Charac
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Blocking increases calculation spee
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In this particular example we get:
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7.9 Moments (one-time statistics) 7
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1 = N Mean D mean ui (7-31) N ∑
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Software implementation Updating me
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u v 2 2 = = ∑ ∑ tU tV 2 2 − 2
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(histogram properties). ni is the n
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volume is calculated for the class
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D30 The volume mean diameter is cal
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Three further factors are however i
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d e ln 2 max 2 V do ∗ Vt = ( 7-48
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Diameter bins The number of diamete
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Trajectory dependent detection area
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Corrected particle Max d e ( Di ) C
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Integral time-scale τI Definition
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The mean values of u(t) and v(t) ar
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Low pass filtering & Step noise Obv
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fc ≡ t 1 2 ∆ If the true signal
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Estimator bias Estimator variance S
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-again S’(f) is used to distingui
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Zero padding Often the sampling per
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As an example the Hanning window is
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The Explorer window will now look s
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8.2.2 Peer-to-Peer Configuration Co
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. High Voltage or Figure 8-3: Calib
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Invalid particles in the corners Th
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Gaussain beam effect The following
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To check for connection, right-clic
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