Front view of the DSC cell array. 49
SODI facility and CSA astronaut Bob Thirsk, on-board ISS before installing DSC cell array inside that box. 57
(a) Interferometer moving bridge, (b) interferometer fixed bridge, and (c) assembled SODI-DSC experimental apparatus. 49
(a) Scheme of the interferometer moving bridge setup, (b) scheme of the interferometer fixed bridge setup, and (c) assembled SODI-DSC scheme of experimental setup.
Experimental cell and temperature controller sketch. 58
Separation versus time during thermodiffusion phase of DSC-Run7 and 12-THN.
Principle scheme of Fourier transform image processing technique to analyze optical digital interferometry of a ternary system: (a) and (b) Converted binary MR and MN lasers data to bitmap images, (c) and (e) cropped MR and MN reference images, respectively, (d) and (f) cropped current MR and MN images, respectively, (g)–(j) two-dimensional fast Fourier transform magnitude of image in parts (c), (d), (e), and (f), respectively, (k)–(n) inversed 2D fast Fourier transform magnitude of filtered image in parts (g), (h), (i), and (j), respectively, (o) and (p) subtracted MR and MN images from reference images, respectively, (q) and (r) unwrapped phase images, (s) and (t) refractive index profiles of MR and MN lasers, respectively, (u)–(w) concentration contours of C12, IBB and THN, respectively, (x) filter mask to filter out one of the non-zero peaks, (y) temperature contour.
Comparison between MATLAB and this study unwrap function, (a) unwrap using MATLAB's unwrap function, (b) unwrap method used in this study. 52
312 data points of refractive index versus time on MR laser.
Refractive index difference between hot and cold walls versus time during isothermal, thermal, and diffusion conditions.
Temperature difference between hot and cold sides during thermal time.
Temperature variation between hot and cold walls of (a) Run7 and (b) Run12.
Temperature distributions in the cavity at different times during thermal time, Run12 (a) after 1 s, (b) after 5 s, (c) after 41 s, and (d) after 133 s.
Phase and phase difference distributions in the cavity at different times, Run12 (a) phase after 1 min, (b) phase after 6 h, and (c) phase difference of first and last phase.
Separation between hot and cold sides during thermodiffusion time.
THN concentration variation between hot and cold walls at various times, (a) Run7 and (b) Run12.
IBB concentration variation between hot and cold walls at various times, (a) Run7 and (b) Run12.
THN concentration profiles in the cavity at different times during diffusion time, Run12 (a) after 30 min, (b) after 75 min, (c) after 3.5 h, and (d) after 6 h.
IBB concentration profiles in the cavity at different times during diffusion time, Run12 (a) after 30 min, (b) after 75 min, (c) after 3.5 h, and (d) after 6 h.
Transient experimental separations of Run12, associated with best fitted curve.
Chemical properties of three components of SODI-DSC test mixtures.
Optical properties of the THN-IBB-C12 mixture measured at T = 298 K. 58
SODI-DSC Runs7 and 12 experimental results with 10 K temperature gradient onboard ISS.
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