This page describes the research and projects I am enjoyng at NUS Temasek Laboratories where I currently work and some other cooperative activties I maintain with the Gas Dynamics and Turbulence Laboratory (GDTL) of The Ohio State University. Click on the figures or the links below to access the corresponding pages.

A novel approach for enhancing jet mixing has been recently developed which exploits the strong flow instability developed in a convergent-divergent nozzle operated at off-design conditions. The method does not use mechanical devices to directly disturb the flow and introduces minimal thrust penalty (1-2%) with potential for even smaller or negligible losses with appropriate design or control of the nozzle shape. The technique can be used in single- or dual-stream jets. In dual-stream jets, where the outer (secondary) stream is the unstable flow, the method is called Mixing Enhancement using Secondary Parallel Injection (MESPI).
During my last year in UCI I worked on MESPI for enhancing liquid mixing with a secondary air stream. In my current position at NUS I am investigating the benefit of of MESPI in enhancing the mixing of the plume of high-bypass turbofan jet engines.

The acoustic resonance of a flow over a cavity occurs in different practical situations. In order to develop better techniques to reduce this annoying and sometime damaging phenomenon it is important to study and to understand its physics. To this aim I use a small subsonic wind tunnel and different acoustic and optical measurements to study what happens in the test section. These measurements will complement and complete other studies on cavity-flow and on the control of its resonant noise.