Philippe spalart biography template
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Philippe Spalart
The Relationship between DNS and RANS
DNS provides all the information on a flow, with limitations on geometry and Reynolds numbers. Datasets have been available since the ’s for homogeneous and free shear flows, as well as wall-bounded flows. The Reynolds number Re_tau in channel flow has risen from to 8, The impact of DNS on the most-used eddy-viscosity models, however, has been extremely small. The impact on Reynolds-stress models is also modest. There are substantial structural difficulties when trying to match RANS to DNS, including conflicts over whether the Reynolds stresses obey a law of the wall, and over whether the stresses are uniform in the log layer. Another factor is that all models accept cancellations of errors between terms. In recent work, DNS fields have been used to define an effective eddy viscosity, to provide a target for simple models. Examples are given, which led to limited success. Machine Learning may be a key to bridging DNS and RANS. The core problem is that data in itself does not create (good) ideas.
Short Biography
Philippe Spalart studied Mathematics and Engineering in Paris, and obtained an Aerospace PhD at Stanford/NASA-Ames in Still at Ames, he conducted extensive Direct Numerical Simulations of transitional and turb
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Philippe Spalart Named Director of Fluid Sciences at Flexcompute
News
23 Nov By Zongfu Yu
We are thrilled to welcome renowned aerospace engineer Dr. Philippe Spalart as a Director of Fluid Sciences at Flexcompute. With his years of extensive experience, there is no one more qualified to head our fluid sciences.
Every engineer in aerospace in the last thirty years has heard Philippe’s name, largely thanks to his invention of the SA (Spalart-Allmaras) model in , which has set a precedent across the aerospace community for advanced and accurate modeling with minimal complexity. Philippe’s contribution further extended much beyond aerospace engineering with the invention of Detached Eddy Simulation.
Philippe, The Spalart-Allmaras Model, and Detached Eddy Simulation
His love of engineering and aerospace started from a young age: he was interested in airplanes as a boy and later went on to finish his Bachelors in Engineering in France before emigrating to the United States with the intention of getting his Masters in Aerospace from Stanford. It wasn’t long before he was noticed and asked to complete his Ph.D. with the help of a scholarship from NASA. Needless to say, that was just the beginning of his career — both in aerospace engineering and in the United States.
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