CFD Code Validation in a World of Flawed Experimentalists

Our research group conducts fluid mechanics experiments that generate data to validate computational fluid dynamics (CFD) codes. Analysts use this data to check their simulations against the real world, i.e., nature. But is our data reliable? Much of it comes from exotic instruments lacking calibration certificates traceable to recognized standards. This should be unsettling since analysts' efforts are sometimes squandered on validation exercises compromised by poor experimental data. What can we do?

This talk begins with examples of measurement error in particle image velocimetry, which is widely used in experiments supporting CFD validation. Basic principles of the technique are explained along with issues that are not easily recognized by analysts, the end users of validation data. We then present recent data from the MAX fluid dynamics facility to make the case for an ideal validation experiment: challenging and interesting for analysts with findings that are resistant to the errors of fickle experimentalists.

June 9, 2015 at 10:00am

See also: MAX Fluid Dynamics Facility - NE website

Printable version of this abstract: CFD code validation in a world of flawed experimentalists.

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