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Presented at the STAR Global Conference 2012 This presentation highlights the CFD results of a gas-liquid two-phase flow in a cyclone tank. The Eulerian multiphase approach using a k-epsilon turbulence model is used to simulate air bubbles dispersed in hydraulic oil. Hydraulic tanks are employed to evacuate air from the hydraulic oil. The advantage of pumping the oil through a cyclone inside the tank is that air is evacuated while, at the same time, the pressure drop is lower compared to a tank without cyclone. The performance of the cyclone is demonstrated by measuring the amount of air...
Presented at the STAR Global Conference 2012
Presented at the STAR Global Conference 2012 One of the major reasons for lower efficiency and higher unburned hydrocarbon and carbon monoxide emission for two stroke engine is short circuit losses that occur during the scavenging process. An attempt has been made in this study to understand and improve this phenomenon. A three dimensional transient CFD model is developed for a schnullar type 70 cc two stroke engine. The engine is installed in a small moped used for personal transport and load carrying. Three major processes, namely blow down (expansion), scavenging and compression have been...
Presented at the STAR Global Conference 2012
Presented at the STAR Global Conference 2012
The implementation of the revolutionary harmonic balance method for the solution of periodically repeating turbulent flows enables the study of unsteady effects in rotating machinery with computational time scales that are drastically reduced compared to traditional transient methodologies.

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