Europeans seem to agree that computational fluid dynamics (CFD) is setting the pace for the evolution of wind tunnels—but not diminishing their role. The cryogenic European transonic wind tunnel (ETW) in Cologne, Germany, specializes in high Reynolds numbers, thus creating a highly realistic environment. There has been significant progress in CFD over the last two decades, Martin Wright, ETW’s manager of aerodynamics and testing, admits. “Twenty years ago in a wind tunnel, ...


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