Dr. Chang serves as the Director General of Taiwan’s National Center for High Performance Computing (NCHC) starting from April, 2022. Prior, he was a senior research scientist with the Computational AeroSciences Branch, NASA Langley Research...

Dr. Chang serves as the Director General of Taiwan’s National Center for High Performance Computing (NCHC) starting from April, 2022. Prior, he was a senior research scientist with the Computational AeroSciences Branch, NASA Langley Research Center. As a computational fluid dynamics (CFD) researcher, Dr. Chang’s tenure at NASA has been focused on several pioneering research fronts related to boundary-layer transition, the space-time conservation element, solution element (CESE) algorithms for time-accurate, high-performance, unstructured-mesh computations of transitional/turbulent flows, counterflowing jet flow control, and machine-learning algorithms for transition/turbulent flow predictions. Dr. Chang contributed substantially in advancing boundary layer stability/transition research by his work on parabolized stability equations, secondary instability for crossflow dominated transition, oblique-mode breakdown in supersonic boundary layers, and supersonic mode instability under chemically nonequilibrium hypersonic flows. His work on the CESE method has paved the way to high-fidelity direct and large-eddy simulation of turbulence and shock interactions using unstructured meshes. He has been the technical lead and the chief numerical algorithm and software architect of several NASA engineering prediction and high-fidelity simulation software tools. The software Dr. Chang developed serves not only as the workhorse inhouse code of NASA but also a widely used design/engineering tool by the U.S. industries, government labs, and academia for laminar flow control design and general flow simulations, including pre- and post-flight analyses of several international hypersonic flight experiments.