BSA Flow Software Installation and User's Guide - CSI

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The DualPDA principle Figure 7-27:Suppression of scattered light due to the slit aperture (slit effect). For flux measurements a well-defined cross-section through which particles are counted is required. In PDA the length dimension of this cross-section is fixed by placing slit apertures in front of the photo detectors. The projection of these slits onto the beam intersection volume is depicted in Figure 7-27 by a lighter shade of grey. For certain particle positions (trajectories) within the volume, certain components of the scattered light can be suppressed because they fall outside of the slit aperture. In particular, certain positions suppress refractively scattered light, leaving only reflectively scattered light to be detected. As with the trajectory effect, such signals will result in incorrect size measurements, since refractively scattered light was presupposed in the choice of β. It is interesting to note that the slit effect occurs also for small particles, i.e. small particles can appear as large particles, thus the potential error in the mass flux is equally high as with the trajectory effect. The DualPDA combines a conventional two-detector PDA and a planar twodetector PDA in one single optical receiving probe, as shown in Figure 2-22, and therefore requires at least a 2D transmitting optics. Four receiving The 57X80 DualPDA Probe thus contains four receiving apertures. The effective apertures size and the shape of the apertures is defined by an interchangeable aperture mask positioned directly in front of the segmented focussing lens. Together with the optical configuration of the transmitting system and the focal length of the DualPDA receiving lens, the mask determines the measurable size range. DualPDA concept The basic concept of the DualPDA is to make two independent size measurements, using for one the conventional PDA and for the other the planar PDA. Each system will yield the same result if only refractively scattered light is received at the photodetector and the particle is spherical. If however, reflectively scattered light dominates, due either to the slit effect or the trajectory effect, each system will yield a different size and they will no longer agree. This redundancy can therefore be used as a validation criteria to avoid the slit effect and the trajectory effect. 7-32 BSA Flow Software: Reference guide
Figure 7-28:The DualPDA as a combination of one two-detector conventional PDA (top left corner) and one planar PDA (top right corner) The response of the system is illustrated in Figure 7-29, computed for a certain optical configuration. Figure 7-29 shows the typical phase-diameter relationship for each of the conventional and planar systems. As can be seen from this figure, the conventional PDA (CPDA) has a much larger phase conversion factor, compared to the planar PDA (PPDA). Thus, the 2π ambiguity of the conventional PDA with two detectors is easily resolved by referring to the planar PDA. This is further illustrated in Figure 7-30. BSA Flow Software:Reference guide 7-33
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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
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Figure 6-51 Properties of the spect
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Blocking Using the FFT-approach to
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1,2 1,0 0,8 0,6 0,4 0,2 Weight fact
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Output from the Spectrum object The
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6.4.2 Advanced Spectrum object Load
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To evaluate the new algorithm, comp
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6.4.3 Correlation object Conclusion
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20 16 12 8 4 0 0.0 0.2 0.4 0.6 0.8
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Time The first column of the output
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The Protocol Figure 6-67: Generic t
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How to Use the Initialisation Strin
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Figure 6-69: Traverse File option i
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Properties Output from MATLAB engin
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Result window Script Hides and disp
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6.6.2 Calculation object from to
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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
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Page 295 and 296: 2. Select Parameter Input 3. The fo
Page 297 and 298: B. Select Advanced Curve fitting an
Page 299 and 300: 6.10 Mobile system Monitor option T
Page 301 and 302: 7. Reference guide 7.1 Theory of La
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: The trajectory effect The slit effe
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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Page 351 and 352: For both orientations of polarizati
Page 353 and 354: Figure 7-46. The effect of changing
Page 355 and 356: Table of characteristic angles Defi
Page 357 and 358: n rel ϕ c1 ϕ b0 ϕ c2 ϕ b2 ϕ r2
Page 365 and 366: Choice of wavelength Choice of mask
Page 367 and 368: Choice of wavelength and focal leng
Page 369 and 370: Choice of polarization Choice of sc
Page 371 and 372: Focal length Transmitter (FiberFlow
Page 373 and 374: Polarization ring Fixing screw Push
Page 375 and 376: Aperture plates The particle size r
Page 377 and 378: Tighten the cable securely at each
Page 379 and 380: Disconnect the receiving fiber V1 f
Page 381 and 382: 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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