D. Brian Spalding

TL;DR: In this paper, a new expression for the time-average reaction rate in a turbulent flame, whether of uniform or non-uniform fuel-air ratio, is presented, based on the idea of coherent gas "parcels", which are subjected to a stretching process while reaction and small-scale mixing take place.

TL;DR: In this article, it is shown that the mixing-length theory for shear flows can be used to simulate the sifting phenomenon in turbulent Couette flows, in which the heating of one of the walls and the presence of a gravitational field can cause sifting to become dominant.

TL;DR: In this article, a method is described for calculating the local average fuel-particle sizes when fuel andgas have different velocity components at all points. But the method is applied to a liquid-propellent rocket motor, for which, when the flow is one-dimensional, an exact solution of the equations exists. Good agreement with this solution is demonstrated by the numerical solutions based upon the new method.

TL;DR: In this article, a finite difference procedure for three-dimensional parabolic flows is used to predict the development of Taylor vortices in the flow between concentric rotating cylinders, resulting from the growth of small disturbances of a Couette flow.

TL;DR: A general finite-difference procedure is presented for the calculation of steady, two-dimensional ‘partially-parabolic’ flows, with special reference to turbine cascade problems, and can be characterised as an ‘iterative space-marching’ method.