Princeton University graduate students Giada Damen, Marcus Hultmark, Noam Lupu and Silviu Pufu have been named as co-winners of the Porter Ogden Jacobus Fellowship, Princeton’s top honor for graduate students. The fellowship supports the final year of study and is awarded to students whose work has exhibited the highest scholarly excellence.

The Jacobus Fellows will be honored at Alumni Day ceremonies Saturday, Feb. 26, at Jadwin Gymnasium

Hultmark, a doctoral student in the Department of Mechanical and Aerospace Engineering, first came to Princeton as a visiting student from the Chalmers University of Technology in Sweden, where he earned a master’s degree in thermo and fluid dynamics.

Hultmark’s dissertation focuses on turbulence in cases of a high Reynolds number — the ratio between inertial forces to viscous forces. High Reynolds numbers can be found in the flow of the Earth’s atmosphere and in the flow of aircraft, submarines and other vessels. In order to measure turbulence and to create circumstances with high Reynolds numbers, Hultmark and his collaborators have developed nanoscale velocity probes that have enabled turbulence measurement at higher Reynolds numbers than ever before. Hultmark also set a world record for the highest Reynolds number wake flow ever measured in a laboratory.

“I hope to make an important contribution to the basic understanding of turbulence and to the design of energy-efficient vehicles and improved climate- and weather-prediction methods,” Hultmark said.

Alexander Smits, Princeton’s Eugene Higgins Professor of Mechanical and Aerospace Engineering and Hultmark’s thesis adviser, noted that Hultmark has amassed a “remarkable record of achievement for a graduate student.” Smits added, “He is a superb experimentalist, but what makes him special is that he asks the right questions. … I am confident that Marcus has a remarkable future ahead of him as a scientist, engineer and teacher.”