scholarly journals Discussion: “Local Mass Transfer From Circular Cylinders in Cross Flow” (Sogin, H. H., and Subramanian, V. S., 1961, ASME J. Heat Transfer, 83, pp. 483–491)

1961 ◽  
Vol 83 (4) ◽  
pp. 492-492
Author(s):  
R. A. Seban
1961 ◽  
Vol 83 (4) ◽  
pp. 483-491 ◽  
Author(s):  
H. H. Sogin ◽  
V. S. Subramanian

This is an investigation of the distribution of the local rate of mass transfer from 4.2-in-diam naphthalene cylinders to air at ordinary temperature and pressure, flowing normal to the axis. The air speeds are near and within the critical zone of the drag. The results in the laminar region are compared with approximate boundary-layer calculations of H. Schuh and of H. J. Merk and with corresponding heat and mass-transfer experimentation in the literature. It is shown that the calculations after Merk are reliable from the point of stagnation to the predicted point of separation.


1994 ◽  
Vol 116 (3) ◽  
pp. 552-560 ◽  
Author(s):  
V. Natarajan ◽  
M. K. Chyu

An experimental study of the local mass transfer over the entire surface of a wall-mounted cube is performed with a particular emphasis on the effects of flow angles-of-attack (0 deg ≤ α ≤ 45 deg). Invoking an analogy between heat transfer and mass transfer, the presently obtained mass transfer results can be transformed into their heat transfer counterparts. Reynolds number based on the cube height and mean free-stream velocity varies between 3.1 × 104 and 1.1 × 105. To substantiate the mass transfer results, streakline patterns are visualized on the cube surfaces as well as the endwall using the oil-graphite technique. Significantly different flow regimes and local mass transfer characteristics are identified as the angle-of-attack varies. The overall convective transport is dominated by three-dimensional flow separation that includes multiple horseshoe vortex systems and an arch-shaped vortex wrapping around the rear portion of the cube. In addition to the local study, power correlations between the surface-resolved mass transfer Sherwood number and the Reynolds number are presented for all α values studied. Mass transfer averaged over the entire cube is compared with that of its two-dimensional counterpart with crossflow around a tall prism.


1976 ◽  
Vol 42 (360) ◽  
pp. 2481-2491 ◽  
Author(s):  
Munehiko HIWADA ◽  
Kiyomi NIWA ◽  
Ikuo MABUCHI ◽  
Masaya TAKEUCHI

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