His has also published on Reynolds number effects in turbulent boundary layers and on the fluid mechanics of microdevices.

During the summers of 1993, 1994, and 1997, he was, respectively, a distinguished faculty fellow at Naval Undersea Warfare Center, Newport, Rhode Island, a visiting exceptional professor at Université de Poitiers, France, and a Gastwissenschaftler (guest scientist) at Forschungszentrum Rossendorf, Dresden, Germany.

[2][better source needed] An editorial in honor of Gal-el-Hak titled "Homage to a Legendary Dynamicist on His Seventy-Fifth Birthday" appeared in the July 2020 issue of the Journal of Fluids Engineering.

[5] In 1998, Gad-el-Hak was named the 14th American Society of Mechanical Engineers (ASME) Freeman Scholar.

[citation needed] Gad-el-Hak has also been awarded the ASME Medal for contributions to the discipline of fluids engineering, as well as a Certificate of Appreciation.