Alex Read

CD-adapco · Business Development

A Computation Fluid Dynamic (CFD) analysis procedure is demonstrated for estimating the ringing loads on an offshore structure modeled as a simple vertical cylinder. The procedure is based on the Euler Overlay Method, where the computational domain of CFD solution is minimized to the immediate vicinity of the structure by overlaying Euler solution...

Computational Fluid Dynamic (CFD) studies of sunroof buffeting on production vehicles demonstrate accurate prediction of the main buffeting frequency and its harmonics. For production vehicles, none to date has illustrated the phenomenon of buffeting intensity maximization over a vehicle speed range, at a frequency related to the volume of the pass...

The flow through an HVAC blower fan, typical to the automotive industry, was solved using STAR-CD. Time varying pressure data was then exported to ACTRAN/TM where the CFD results were decomposed into acoustic duct modes, using a multiple plane matching method. These duct modes were then propagated to far field locations and compared with experiment...

SUMMARY This paper investigates the tonal noise radiated by a subsonic blower fan of an HVAC system. Numerical simulations have been performed and compared to measurements. The numerical simulation is based on the aero-acoustic analogy where the unsteady flow is first computed using STAR-CD and then passed to LMS SYSNOISE to compute the acoustic ra...