Half-cylinder

Fig. 5 Transduction efficiency of EMAT measured on half-cylinder...

Apparatus. Use the apparatus shown in Figs. 14.2(a) and (b). The generator cathode (isolated auxiliary electrode) consists of platinum foil (4 cm x 2.5 cm, bent into a half cylinder) and the generator anode (working electrode) is a rectangular platinum foil (4 cm x 2.5 cm). For potentiometric end point detection, use a platinum-foil electrode 1.25 cm x 1.25 cm (or a silver-rod electrode) in combination with an S.C.E. connected to the cell by a potassium chloride- or potassium nitrate-agar bridge. 

Apparatus. Use the apparatus of Section 14.7. The generator anode is of pure silver foil (3 cm x 3 cm) the cathode in the isolated compartment is a platinum foil (3 cm x 3 cm) bent into a half-cylinder. For the potentiometric end point detection, use a short length of silver wire as the indicator electrode the electrical connection to the saturated calomel reference electrode is made by means of an agar-potassium nitrate bridge. 

Annular flow, wavy interface (Henry, 1971) Under this condition the virtual mass of gas flowing over a wavy surface can be approximated by flow over a surface made of continuous rows of half-cylinders ... 

Fig. 6. Scanning electron photomicrograph of a PLGA 50 50 scaffold in the shape of a half-cylinder prepared by a melt molding method [35] using 35 wt% gelatin microspheres with diameters in the size range 300-500 pm. (Reproduced with permission from [35])...

Here we describe the results of a model calculation of the wave-induced pressure forces on a submerged half-cylinder, and compare the results with experimental data. The implications of the comparisons for both the validity of the model and the experimental procedure will be examined. Finally, the application of the model to other fluid flows and to combustion problems will be discussed. 

Figure 10. A comparison of numerical results with experiment and with linear theory for the magnitude of pressure variations over a half-cylinder owing to a...

Data for the experimental comparison was obtained through wave-tank experiments performed with a bottom-mounted half-cylinder so that pressure measurements could be compared directly to the numerical results (11). The obstacle was placed one-third of the tank length from a mechanical wavemaker and at the other end of the channel a sloping porous beach absorbed 95% or more of the incident wave energy. 

Figure 11. A comparison of numerical results with theory and experiment for instantaneous pressure distributions on a half-cylinder (ka — 2.5 and kh = 5) with...

The half-cylinder has k = 20 W/m °C and is exposed to the convection environment at 20°C. The lower surface is maintained at 300°C. Compute the temperatures for the nodes shown and the heat loss for steady state. 

The half-cylinder in Prob. 3-59 is initially uniform in temperature at 300°C and then suddenly exposed to the convection boundary while the bottom side is maintained at 300°C. Calculate the nodal temperatures for several time increments, and compute the heat loss in each period. Take a = 0.5 x 10-5 m2/s. 

The circular half-cylinder shown has a diameter of 60 cm and a square rod 20 by 20 cm placed along the geometric centerline. Both are surrounded by a large enclosure. Find F, . Fn. and F, in accordance with the nomenclature in the figure. 

The inside temperature of a half cylinder is maintained at 1000 K and is enclosed by a large room. The surface emissivity is 0.7. The diameter is SO cm and the length may be assumed to be very long. The back side of the cylinder is insulated. Calculate the heat loss per unit length if the room temperature is 300 K. 

Hunter [44] desenbed washcoated thin-walled metal half-cylinders, slightly tapered at one end and perforated to give a large number of projections over the outer surfaee, which were used in carbon dioxide methane reforming, Eq (15), with ruthenium as the catalytically active phase... 

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