# Applied mechanics and industrial technologies : selected, by Ford Lumban Gaol

By Ford Lumban Gaol

By Ford Lumban Gaol

Read or Download Applied mechanics and industrial technologies : selected, peer reviewed papers from the 2012 International Conference on Applied Mechanics and Manufacturing Technology (AMMT 2012), August 14-15, 2012, Jakarta, Indonesia PDF

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Additional resources for Applied mechanics and industrial technologies : selected, peer reviewed papers from the 2012 International Conference on Applied Mechanics and Manufacturing Technology (AMMT 2012), August 14-15, 2012, Jakarta, Indonesia

Example text

3: Variation of absolute (a) and relative compression work (b) for various injection ratios and compression ratios. Ford Lumban Gaol 27 consequently to greater driving force for droplet evaporation. As water injection ratio increases for a specified compression ratio, the relative compression work decreases, namely reduction of compression work due to water injection increases. 5% for water injection ratios of 1%, 2%, 3%, 4%, and 5%, respectively. The comparable results between this work and fully numerical results of [3] are in good agreement.

Fig. 3(a) shows transinet behaviours of the mass flux at the droplet surface with injection ratio as a parameter. The initial diameter of water droplets is 20 µm, while the initial temperature and humidity of the air in the duct is T1 = 35 ºC and RH1 = 20%, respectively. In the low fogging range (rf1 < 1), the mass flux decreases first with time. This is because humidity difference between droplet surface and ambient is a driving force for mass transfer and it decreases with time due to evaporation of liquid droplets.

Figure 2 – In-situ crankshafts grinding device – journal with ∅ 120 mm 42 Applied Mechanics and Industrial Technologies The renewable crankshaft bearing surface is abrasively processed by the flat surface of grinding stone. This kind of abrasive stone position is rather unusual for grinding operations. However, only in this manner it is possible to carry out crankshafts grinding in the very limited space of the engine housing. This is the main advantage of this elaborated equipment in comparison with other available grinding devices in the ship repair facilities.