... to occur when the main-drop spacing was five to seven times the jet diameter ( 23 ). Rallison found that drops with a low viscosity achieved a stable shape and were only broken by a high flow rate fluid ( 24 ). On the numerical side, Lee found that the satellite drop volume depended on the wavelength-jet...

... Mixtures ,” Proc. R. Soc. London, Ser. A 0950-1207 , 444 ( 1922 ), pp. 573 – 581 . 10.1098/rspa.1994.0039 Harkins , W. D. , and Brown , F. E. , 1919 , “ The Determination of Surface Tension (Free Surface Energy), and the Weight of Falling Drops: The Surface Tension of Water...

... or is roughened. 27 11 2007 05 01 2009 27 03 2009 drops flexible manufacturing systems liquid metals rapid prototyping (industrial) surface roughness wetting droplet deposition droplet bouncing wetting surface roughness 3D printing flexible manufacturing system (FMS) rapid...

... Jet Technologies II , Springfield, VA, pp. 360 – 365 . Chang , S. , and Paul , P. , 2004 , “ Effect of Ink Drop Coalescence on Print Quality in Solid Ink Printing ,” IS&T’s NIP20: International Conference on Digital Printing Technologies , Salt Lake City, UT , Oct. 31, pp. 429...

... Sprays ,” Int. J. Heat Mass Transfer 0017-9310 10.1016/S0017-9310(98)00054-4 , 41 ( 20 ), pp. 3037 – 3054 . Stow , C. D. , and Hadfield , M. G. , 1980 , “ An Experimental Investigation of Fluid Flow Resulting From the Impact of a Water Drop with an Unyielding Dry Surface ,” Proc...

...Taik-Min Lee; Tae Goo Kang; Jeong Soon Yang; Jeongdai Jo; Kwang-Young Kim; Byung-Oh Choi; Dong-Soo Kim In this paper, we present the design, fabrication, and performance test of a gap adjustable molten metal drop-on-demand (DoD) inkjet system with a cone-shaped piston head, which can eject...

... presents an analytical model to estimate evaporation time for the impacting drops at surface temperatures above Leidenfrost, 300 – 450 ° C . It is based on the suspension of deformed droplet on a vapor cushion sustained by a continuous supply of water from the drying droplet. Model predictions...

.... , and Westerling , N. A. Y. , 1996 , “ The Heat Transfer From a Hot Wall to Impinging Water Drops in the Spheroidal State ,” Chem. Eng. Sci. 0009-2509 10.1016/0009-2509(66)85100-X , 21 , pp. 1047 – 1056 . Engel , O. G. , 1955 , “ Water Drop Collisions With Solid Surfaces ,” J. Res. Natl...

... cavity molten tin was forced out through the nozzle forming a jet whose tip detached to form a single droplet of 600 ± 20 μ m in diameter. Then, as nitrogen inside the cavity escaped through the vent on top of the droplet generator, gauge pressure inside the droplet generator dropped rapidly...

... of the parameters is demonstrated on examples of deposited droplets of nickel and tin-alloy wires. Experimental results on tin-alloy wire indicate that the problem of splashes on the substrate is still present, while those on nickel reveal an acceptable formation of droplets. drops liquid metals laser...

... Editor: Dong-Woo Cho. 10 March 2003 06 Feb 2004 07 09 2004 cutting turning (machining) drops fluid dynamics sprays condensation Cutting fluids are widely used to cool and lubricate, flush away chips, and inhibit corrosion during machining operations such as drilling...

... for publication in the JOURNAL OF MANUFACTURING SCIENCE AND ENGINEERING . Manuscript received Mar. 2003; Revised Feb. 2004. Associate Editor: Dong-Woo Cho 01 Mar 2003 01 Feb 2004 07 09 2004 cutting lubricants coolants fluid dynamics turning (machining) drops sprays Part 1...

... drops per second, impacting with an initial temperature of approximately 2573 K); however, attempts are not made to reproduce the precise shape and the contact angle between a typical droplet edge and the substrate. Comparison of results from these 3-D simulations to those from axisymmetric droplet...

... processes melting stress analysis thermomechanical treatment drops 1 Schematics of the shape deposition manufacturing (SDM) process and the microcasting deposition process used within SDM A problem in understanding residual stress build-up in SFF processes is its complexity. SFF processes...

... for publication in the JOURNAL OF MANUFACTURING SCIENCE AND ENGINEERING . Manuscript received March 1999; revised March 2000. Associate Editor: J. Lee. 01 March 1999 01 March 2000 arc welding drops mass transfer heat transfer A naturally physical oscillation frequency for a given...

... of aluminum oxide in the melt does not prohibit the removal of the splat boundaries. Mechanical analysis shows that fabrication with molten aluminum droplet deposition results in a 30 percent increase in ultimate tensile strength compared to the raw ingot stock. [S1087-1357(00)02402-3] aluminium drops...