BSA Flow Software Installation and User's Guide - CSI

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Figure 5-19 System monitor Scope section showing overlaid graphs for a poorly aligned optical system (left) and a well aligned system (right). The Scope zoom is 400% to the left, and 200% to the right. 5.4 Optical LDA System properties Figure 5-20. LDA optical properties The software supports up to three beam systems each representing a measured velocity component. Each beam system has a set of properties as shown. The beam systems should be associated with velocity channels in the processor. With BSA F/P processors, the default is that Beam system U1 is associated with velocity channel LDA1, etc. If you want a different relationship between optics and processor channels, start the Dantec Device Configuration (right-click in the BSA Application window or start it from the Windows Control Panel), and select the Bindings tab: 5-26 BSA Flow Software: Project explorer objects
Uncheck the Use default bindings box to change the bindings. The Beam System properties refer to the PM input, e.g. Beam System U1 refers to the optics properties of the optics and PM connected to PM input 1. Based on the parameters specified below, the software computes the measurement volume dimensions and the fringe spacing. These can be seen in the lower part of the BSA Application window, when Show - Show Optics is checked in the context menu (right-click in the lower part of the window). Note The software computes the effective beam spacing at the front lens as Beam Spacing multiplied by Expander Ratio. To get correct optical parameters, set the expander ratio to 1, and the beam spacing to the one at the front lens. In the Beam diameter field, enter the beam diameter at the front lens, i.e. the beam diameter before beam expander(s) multiplied with the total beam expansion. Wavelength The wavelength of the laser line used, in nm. The most common wavelengths used for LDA are: 476.5 nm: “violet” or dark blue line of an Argon-Ion laser 488 nm: blue line of an Argon-Ion laser 514.5 nm: green line of an Argon-Ion laser 532 nm: green line of a frequency doubled Nd:YAG laser 632.8 nm: red line of a Helium-Neon laser Focal length The focal length of the front lens of the transmitting optics. Used for calculation of the fringe spacing in and dimensions of the measurement volume. Beam diameter The diameter of the laser beam at the exit of the optics (before front lens and beam expander). Used for calculation of the dimensions of the measuring volume. Expander ratio It should be set to 1 if no beam expander is used. The beam diameter is multiplied by the expander ratio to find the resulting beam diameter at the exit of the beam expander or entry to the front lens. Used for calculation of the fringe spacing in and dimensions of the measurement volume. BSA Flow Software: Project explorer objects 5-27
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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
Page 83 and 84: 57G15 Traverse interface Third part
Page 85 and 86: • right-click the Traverse Server
Page 87 and 88: 4. This brings up the following dia
Page 89 and 90: To change a setting, click in the V
Page 91 and 92: Figure 4-39 System monitor in auto-
Page 93 and 94: 14. You have now completed data acq
Page 95 and 96: 4. Check the Show System Monitor wh
Page 97 and 98: . 8. LDA 1 properties are specific
Page 99 and 100: 11. To monitor the Doppler signals,
Page 101 and 102: The axes will automatically rescale
Page 103 and 104: Click Acquire. If a complete new re
Page 105 and 106: Define the positions that you want
Page 107 and 108: Select the type of the files to ope
Page 109 and 110: 5. Project explorer objects 5.1 Sta
Page 111 and 112: Browse to the file you wish to impo
Page 113 and 114: For each column, the data type must
Page 115 and 116: 5.3.1 Output properties Figure 5-4
Page 117 and 118: Figure 5-7 The Custom… dialog und
Page 119 and 120: Figure 5-8 BSA F/P 30: processor pr
Page 121 and 122: Max. acquisition time: The maximum
Page 123 and 124: Normal user interface Advanced user
Page 125 and 126: Figure 5-11 The Bragg cell connecto
Page 127 and 128: LDA 1, 2, . properties: Range and g
Page 129 and 130: 5.3.4 System monitor It frequently
Page 131 and 132: Scope: Burst spectrum display Recor
Page 133: Overlaid Graphs: used to show the b
Page 137 and 138: The calibration data are stored in
Page 139 and 140: 5.6.1 PDA beam system The Beam syst
Page 141 and 142: Figure 5-24: Fringe direction setti
Page 143 and 144: 5.6.4 Medium properties Medium name
Page 145 and 146: Software max. limit in mm.: Self ex
Page 147 and 148: The default address of the National
Page 149 and 150: Traverse coordinates of a datum poi
Page 151 and 152: 5.7.8 Traverse Mesh generator If yo
Page 153 and 154: Regions Figure 5-39 Motion pattern,
Page 155 and 156: Warning Please observe strict secur
Page 157 and 158: 5.9 Export Figure 5-40 Data-sources
Page 159 and 160: If multiple positions are exported
Page 161 and 162: 5.9.3 Selected columns 5.9.4 Binary
Page 163 and 164: Data C Headers Programming Examples
Page 165 and 166: char filename[256] = {0}; strcpy(fi
Page 167 and 168: Range means that the filter will ap
Page 169 and 170: 5.11.1 Data Properties Note that th
Page 171 and 172: Figure 5-54. Size histogram (left)
Page 173 and 174: Figure 5-57. Velocity distribution
Page 175 and 176: Figure 5-58 list output of 1D PDA d
Page 177 and 178: The next selection in the context m
Page 179 and 180: 5.13.2 Objects under Merge object A
Page 181 and 182: N−1 Mean u ∑ ηiui = i= 0 N−1
Page 183 and 184: 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
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max var. max of all arguments sum v
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6.7.3 Software set-up Once A/D-hard
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Figure 6-76 BSA F/P application win
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6.7.7 Analog input specifications J
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6.8.1 Installation 6.8.2 Hardware c
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Figure 6-85 BSA F/P application win
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6.9.1 Required hardware 6.9.2 Calib
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2. Select Parameter Input 3. The fo
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B. Select Advanced Curve fitting an
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6.10 Mobile system Monitor option T
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7. Reference guide 7.1 Theory of La
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Doppler effect d0 R(z) Figure 7-1 L
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es e2 e1 U Figure 7-3 Scattering of
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Measuring volume proportional to pa
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Laser fI Beam splitter As indicated
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7.1.6 Frequency shift • Reduce th
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As long as the particle velocity do
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7.1.7 Signals The primary result of
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7.1.8 Seeding Seeding as flow field
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150 90 180 0 180 0 180 0 210 120 24
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7.2 Theory of Phase Doppler Anemome
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D is the particle diameter. βi is
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For reflection (Equation 7-16) The
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Figure 7-21: The effect of changing
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This is the principle of the spheri
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The trajectory effect The slit effe
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Figure 7-28:The DualPDA as a combin
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Figure 7-31: Reflection and refract
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Characteristic scattering angles At
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⎛ ϕ ⎞ ϕ2 = 4arcsin⎜ ⎟ −
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Figure 7-36: The critical angle con
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Using side scatter (reflected light
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Mask Front Lens Eye-piece Spatial f
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Alignment of the eyepiece The focus
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This is often not necessary in 1D a
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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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