This report contains the 2001 Annual Progress Reports of the postdoctoral fellows and visiting scholars of the Center for Turbulence Research. In 2001 CTR sponsored 15 resident Postdoctoral Fellows, 7 Research Associates and 3 Senior Research Fellows, hosted 7 visiting scholars and many shorter-term visitors, and supported 6 doctoral students. Most of the doctoral students engaged in turbulence research at CTR are supported by the U.S Office of Naval Research or the Air Force Office of Scientific Research. CTR is closely associated with the Stanford multidepartmental Center for Integrated Turbulence Simulations (CITS), funded by the Department of Energy's Accelerated Strategic Computing Initiative (ASCI). The aim of the CITS program is to compute the complete flow through an aircraft gas turbine engine. The combustion chamber is the most critical region: it is typically of very complicated geometrical shape, and the fuel is introduced as a spray of droplets which must disperse and vaporize before burning. The first paper in this volume describes large-eddy simulation of the air flow in a real aircraft gas turbine combustor, and there are several papers relevant to the crucial problem of spray combustion.