Dudley Brian Spalding (9 January 1923 – 27 November 2016) was Professor of Heat Transfer and Head of the Computational Fluid Dynamics Unit at Imperial College, London.

From the outset commercial CFD services were provided to industrial and governmental clients based on the technology that had emerged from his research group at Imperial College in the late 1960s.

The first contracts undertaken by CHAM were conducted by members of the academic staff of the Heat Transfer Section of the Mechanical Engineering Department of Imperial College, London.

Subsequently, in the early 1970s, CHAM funds generated from contract work for industrial and governmental clients were used for the development of new families of computer programs, for three-dimensional phenomena as well as two-dimensional ones, and for time-dependent as well as steady flows.

At that time CHAM placed a general research contract with Imperial College to develop a complete array of computer programs for predicting all the major types of convective, heat-transfer and chemically-reactive processes which are likely to be encountered in engineering and the natural environment.

These programs were equipped with mathematical models for turbulence, radiation, chemical reaction and some two-phase effects, such as particle-size change.